An environment-friendly range hood based on dynamic soot separation technology

Abstract

The present invention discloses an environment-friendly range hood based on dynamic soot separation technology, belonging to the technical field of oil fume separation. It includes a housing, a motor, an impeller, a smoke exhaust mechanism, a dust removal mechanism, a sensor, and a controller. The impeller is rotatably installed in the housing and is driven by the motor. The smoke exhaust mechanism includes a filter screen and a connection assembly. The filter screen is coaxially and rotatably installed with the impeller through the connection assembly. The filter screen is a diamond mesh oil filter screen formed by the interweaving of multiple groups of curves. The dust removal mechanism includes a brush and an opening and closing mechanism. The opening and closing mechanism is arranged on the housing and is used to adjust the working angle of the brush. The sensor is used to detect the soot concentration around the range hood. The present invention realizes the soot separation of the range hood, effectively separates the dust in the oil fume, purifies the discharged gas, reduces the pollution of outdoor air, and reduces the accumulation speed of soot on the filter screen through the setting of the brush, thereby reducing the cleaning and maintenance costs of the range hood.

Description

Technical Field

[0001] The invention relates to the technical field of oil fume separation, and in particular to an environmentally friendly range hood based on dynamic smoke separation technology. Background Art

[0002] At present, in areas with poor living standards, many families use traditional fans as kitchen fume exhaust equipment. This fume exhaust equipment usually includes an electric fan and ventilation ducts. The fan has rotating blades that can generate airflow. When in use, the fan is turned on by power, the motor starts to rotate, and the fan blades rotate to generate airflow; during the cooking process, the fume rises with the hot air and spreads to every corner of the kitchen; the fan attracts the surrounding fume, heat and odor through the negative pressure generated; the fume is sucked into the fan and discharged from the kitchen through the connected ventilation duct, usually directly to the outside.

[0003] The existing kitchen range hood is shown in the Chinese application: Kitchen fan and range hood with application number: 202322938786.9, which includes a shell, a motor, a filter and a cleaning mechanism. The motor is arranged in the shell, the filter is arranged on the shell, and the filter is arranged on the air inlet side of the motor; the cleaning mechanism is arranged on the filter, and the cleaning mechanism is used to clean the filter; the cleaning mechanism is configured as follows: in a first state, the cleaning mechanism is connected to the rotating shaft of the motor, and the rotation of the motor drives the cleaning mechanism to rotate to clean the filter; in a second state, the cleaning mechanism is disconnected from the rotating shaft of the motor.

[0004] The prior art has the following defects: in the above-mentioned range hood, the filter can only simply intercept part of the oil droplets, and at the same time, it is necessary to keep the filter clean by a cleaning mechanism or manual cleaning; since the filter cannot separate smoke and dust, the oil smoke on the filter accumulates quickly, and the filter needs to be frequently cleaned or replaced, which increases the frequency and intensity of cleaning, and thus increases labor intensity and maintenance costs; in addition, long-term oil smoke accumulation may also cause damage to the motor and fan blades, leading to equipment failure and affecting use, so there is room for improvement. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides an environmentally friendly range hood based on dynamic smoke separation technology to solve the technical problems that existing range hoods cannot achieve smoke separation, smoke accumulates on the filter quickly, and the cost of cleaning and maintaining the range hood is high.

[0006] The present invention is achieved through the following technical solutions:

[0007] An environmentally friendly range hood based on dynamic smoke and dust separation technology comprises a shell, a motor, an impeller, a smoke exhaust mechanism, a dust removal mechanism, a sensor and a controller, wherein the impeller is rotatably installed in the shell and driven by the motor, the smoke exhaust mechanism comprises a filter and a connecting assembly, the filter is coaxially rotatably installed with the impeller through the connecting assembly, the filter is a diamond mesh oil filter formed by interweaving a plurality of groups of curves; the dust removal mechanism is used to remove dust adhered to the filter, the dust removal mechanism comprises a brush and an opening and closing mechanism, the opening and closing mechanism is arranged on the shell, the brush is arranged on the opening and closing mechanism, the opening and closing mechanism is used to adjust the working angle of the brush, the sensor is used to detect the smoke concentration around the range hood and feed back the detected data to the controller, the smoke exhaust mechanism and the dust removal mechanism are communicatively connected with the controller.

[0008] Preferably, the connecting assembly includes a mounting shaft and a first limiting member, the mounting shaft is coaxially fixed at the center position of the filter, the impeller is provided with a mounting ring, the mounting shaft is inserted into the mounting ring, and the two end surfaces of the mounting ring that are opposite to each other are respectively set as the first surface and the second surface, and the first limiting member is set on the mounting shaft for being tightly fixed to the first surface and the second surface.

[0009] Preferably, the first limit member includes a base, a guide shaft, a top seat, a first spring, an adjustment plate, a support shaft and a fastener, the base, the guide shaft and the top seat are coaxially arranged in sequence, the base is coaxially fixed with one end of the mounting shaft, the guide shaft is fixed to an end of the base away from the mounting shaft, a first guide hole is arranged in the top seat, the guide shaft is slidably installed in the first guide hole, a second guide hole is also arranged in the top seat, the first spring is arranged in the second guide hole and connected to the adjustment plate, the adjustment plate is coaxially arranged with the guide shaft, the adjustment plate is arranged outside the second guide hole, the cross-sectional diameter of the adjustment plate is larger than the cross-sectional diameter of the second guide hole, the support shaft is opened and closed at the circumference of the base, and is hinged to the end of the base away from the mounting shaft, the adjustment plate is used to adjust the opening and closing angle of the support shaft, the end of the support shaft close to the mounting shaft abuts against the first surface, a thread is arranged on the mounting shaft, and the fastener is threadedly matched with the mounting shaft and abutted and fixed against the second surface.

[0010] Preferably, the connecting assembly also includes a second limit member, the second limit member includes a limit block, a second spring and a sliding member, a sliding groove is provided on the mounting ring, the limit block is slidably installed in the sliding groove, a third guide hole is provided in the limit block, a circular hole penetrating the third guide hole is also provided on the limit block, a through hole corresponding to the circular hole is provided on the bottom surface of the sliding groove, the second spring is provided in the third guide hole, the second spring is connected to the sliding member, and the sliding member is slidably provided in the circular hole and the through hole.

[0011] Preferably, an oil collecting trough is also embedded in the shell, and the oil collecting trough can be detachably installed on the shell. The oil collecting trough is arranged opposite to the filter screen, and an oil pump is arranged at the bottom of the oil collecting trough. The oil pump is connected to an oil drain tank, and the oil pump is used to absorb the oil stains on the oil collecting trough and collect them in the oil drain tank.

[0012] Preferably, a dust collecting box is further provided in the shell, an air inlet on the dust collecting box is arranged opposite to the dust removal mechanism, and a fan is further provided in the dust collecting box.

[0013] Preferably, the opening and closing mechanism includes a first mounting plate, a first connecting member, a second mounting plate, a second connecting member and a fixing member, the first mounting plate is fixed to the shell, the first connecting member is integrally formed on the first mounting plate, the second mounting plate is hinged to the first mounting plate, the brush is fixed to the second mounting plate, the second connecting member is fixed to a side of the second mounting plate close to the first connecting member, a first notch is provided on the first connecting member, a second notch is provided on the second connecting member, the first notch and the second notch are arranged opposite to each other, the fixing member penetrates through and is slidably installed on the first notch and the second notch, and the operating angle of the brush is adjusted by adjusting the installation position of the fixing member on the first connecting member and the second connecting member.

[0014] Preferably, the fixing member includes a connecting seat, a first slide, a second slide, a third slide, a fourth slide and a holding portion, the first slide, the second slide, the third slide and the fourth slide are slidably installed on the connecting seat, the second slide and the third slide are used to be clamped and fixed with the first connecting member and the second connecting member, the end surfaces of the first slide and the second slide that are close to each other are provided with mutually meshing teeth, the end surfaces of the third slide and the fourth slide that are close to each other are provided with mutually meshing teeth, the holding portion is rotatably installed on one end of the connecting seat, the holding portion is provided with an eccentric wheel, and the eccentric wheel is tightly pressed against the fourth slide.

[0015] Preferably, the oil pump and the fan are communicatively connected to the controller, and the controller regulates the operating states of the oil pump and the fan according to the data measured by the sensor.

[0016] Preferably, the brush is magnetically adsorbed on the second mounting plate.

[0017] The beneficial effects of the present invention are:

[0018] 1. The filter adopts a diamond mesh structure formed by interweaving multiple groups of curves to improve the efficiency of collecting oil smoke. The centrifugal force generated by the coaxial rotation of the impeller and the filter separates the flowing oil droplets and larger particles from the airflow, so that more oil smoke is effectively removed. At the same time, the dust removal mechanism is set to achieve effective separation of smoke and dust, reduce the accumulation of smoke and dust on the filter, and the filter can be kept clean for a long period of time. At the same time, the smoke exhaust mechanism and dust removal mechanism are set to reduce the oil smoke pollution of the exhaust gas, achieve purification of the exhaust gas, and protect the environment. At the same time, since the smoke and dust are fully processed before entering the impeller, the amount of smoke and dust attached to the impeller is reduced, the load of the motor is reduced, the large suction operation of the impeller is guaranteed, and the operation efficiency of the range hood is improved;

[0019] 2. The first limiter is fixed against the first surface and the second surface to reduce the installation gap between the filter and the impeller, so that the filter is not easy to deviate during operation, thereby maintaining a stable rotation state, reducing the vibration caused by asymmetric or uneven force, and making the rotation of the filter more stable; the first limiter provides a reliable fixed connection between the filter and the impeller through the base, guide shaft, top seat and other structures, and at the same time simplifies the installation and disassembly process of the filter and the impeller; the second limiter can effectively limit the rotation range of the installation shaft through the design of the limit block and the spring, reduce the lateral displacement of the installation shaft during operation, make the structure between the impeller and the filter more stable, and reduce the possibility of fatigue damage to the filter;

[0020] 3. By adjusting the installation position of the fixing part on the first notch and the second notch, the user can flexibly adjust the working angle of the brush according to actual needs. Under different working conditions (such as high fume concentration and heavy dust accumulation), adjusting the angle of the brush can make it fit the filter more closely, enhance the cleaning effect and improve the cleaning efficiency. Through the design of the grip and the eccentric wheel, the user can conveniently manually adjust the tightness between each group of slides without disassembling the equipment or performing complicated operations. In addition, the setting of the tooth pattern increases the friction between the slides and improves the fastening effect of the fixing part.

[0021] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the background art, the following will describe the drawings required for use in the embodiments of the present invention or in the background art.

[0023] The drawings herein are incorporated into the specification and form a part of this specification. These drawings show embodiments in accordance with the present disclosure and, together with the specification, are used to illustrate the technical solutions disclosed by the present invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of the range hood of the present invention;

[0025] Figure 2 It is Figure 1 an enlarged view of location A in

[0026] Figure 3 It is Figure 1 an enlarged view of location B in

[0027] Figure 4 It is a vertical sectional view of the overall range hood of the present invention;

[0028] Figure 5 It is Figure 4 an enlarged view of location C in

[0029] Figure 6 It is Figure 4 an enlarged view of location D in

[0030] Figure 7 It is a horizontal sectional view of the overall range hood of the present invention;

[0031] Figure 8 It is Figure 7 an enlarged view of location E in

[0032] Legend: 1. Housing; 2. Impeller; 21. Mounting ring; 22. First surface; 23. Second surface; 24. Chute; 25. Through hole; 3. Smoke exhaust mechanism; 31. Filter screen; 32. Connection assembly; 321. Mounting shaft; 322. First limiting member; 3221. Base; 3222. Guide shaft; 3223. Top seat; 3224. First spring; 3225. Adjusting plate; 3226. Support shaft; 3227. Fastener; 3228. First guide hole; 3229. Second guide hole; 323. Second limiting member; 3231. Limiting block; 3232. Second spring; 3233. Sliding member; 3234. Third guide hole; 3235. Round hole; 4. Dust removal mechanism; 41. Brush; 42. Opening and closing mechanism; 421. First mounting plate; 422. First connecting member; 423. Second mounting plate; 424. Second connecting member; 425. Fixing member; 4251. Connection seat; 4252. First sliding piece; 4253. Second sliding piece; 4254. Third sliding piece; 4255. Fourth sliding piece; 4256. Holding part; 4257. Tooth pattern; 4258. Eccentric wheel; 426. First notch; 427. Second notch; 5. Sensor; 6. Controller; 7. Oil sump; 8. Oil pump; 9. Oil drain tank; 10. Dust collection box; 11. Fan. Detailed implementation manners

[0033] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0034] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower",

[0036] "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0041] See also Figure 1-Figure 8 , an environmentally friendly range hood based on dynamic smoke and dust separation technology, comprising a shell 1, a motor, an impeller 2, a smoke exhaust mechanism 3, a dust removal mechanism 4, a sensor 5 and a controller 6, the impeller 2 is rotatably installed in the shell 1, the impeller 2 is driven by the motor, the smoke exhaust mechanism 3 comprises a filter 31 and a connecting component 32, the filter 31 is coaxially rotatably installed with the impeller 2 through the connecting component 32, the filter 31 is a diamond mesh oil filter formed by interweaving a plurality of groups of curves; the dust removal mechanism 4 is used to remove dust adhered to the filter 31, the dust removal mechanism 4 comprises a brush 41 and an opening and closing mechanism 42, the opening and closing mechanism 42 is arranged on the shell 1, the brush 41 is arranged on the opening and closing mechanism 42, the opening and closing mechanism 42 is used to adjust the working angle of the brush 41, the sensor 5 is used to detect the smoke concentration around the range hood, and feed back the detected data to the controller 6, the smoke exhaust mechanism 3 and the dust removal mechanism 4 are communicatively connected with the controller 6.

[0042] The working principle of the range hood in this application is:

[0043] The impeller 2 of the range hood is driven by a motor to rotate, forming a strong suction force to introduce the oil fume airflow into the machine. The dust and oil fume mixture gas enters the housing 1 through the air inlet; when the oil fume passes through the filter screen 31, since the filter screen 31 is a diamond mesh oil filter screen formed by intertwining multiple groups of curves, the oil fume accumulates on the filter screen 31, and the geometric shape of the mesh holes causes the airflow to disperse when passing through the filter screen 31, achieving effective dust separation; the filter screen 31 rotates coaxially with the impeller 2, and the oil stains accumulated on the filter screen 31 are separated under the centrifugal force, a part of the dust is separated from the filter screen 31 along with the oil fume, and the remaining dust continues to accumulate on the filter screen 31; when the dust accumulates to a certain extent, the dust removal mechanism 4 comes into play. This mechanism includes a brush 41 and an opening and closing mechanism 42. The opening and closing mechanism 42 adjusts the working angle of the brush 41 to ensure that the brush 41 can clean the filter screen 31 comprehensively. When the brush 41 contacts the filter screen 31, it can effectively remove the accumulations on the filter screen 31 and reduce the possibility of blockage; through the sensor 5 installed on the device, the dust concentration in the surrounding environment is monitored in real time. The data collected by the sensor 5 is fed back to the controller 6, which can adjust the working state of the range hood according to these data, such as increasing the suction force or increasing the dust removal frequency, to ensure the best oil fume capture effect; since the controller 6 is connected to the exhaust mechanism 3 and the dust removal mechanism 4, it can automatically adjust the working mode of the device according to the dust concentration monitored by the sensor 5, optimize energy consumption, and improve efficiency.

[0044] The filter screen 31 adopts a diamond mesh structure formed by the interweaving of multiple groups of curves, which can greatly improve the capture efficiency of oil fumes. When the oil fumes pass through the filter screen 31, due to its special geometric shape, it can effectively change the airflow direction, enabling the oil fume particles to be physically isolated, thereby reducing the oil fume content in the airflow. To further improve the soot separation efficiency, the centrifugal force generated by the coaxial rotation of the impeller 2 and the filter screen 31 separates the flowing oil droplets and larger particulate matters from the airflow, enabling more oil fumes to be effectively removed, and these particulate matters will not stay on the filter screen 31 for a long time, reducing the incidence of blockage. At the same time, through the setting of the dust removal mechanism 4, the accumulation of soot on the filter screen 31 is reduced. Through the effective separation of soot, the accumulation speed of soot and oil stains on the filter screen 31 is significantly reduced, and it can remain clean for a long period, extending the service life of the filter screen 31 and reducing the cost caused by frequent replacement of the filter screen 31. The setting of the filter screen 31 and the dust removal mechanism 4 realizes the separation of soot, reducing the frequency at which users need to clean or replace the filter screen 31 regularly, reducing the maintenance burden of users in daily use, and enhancing the convenience of use. With less maintenance, the equipment can maintain higher efficiency and better performance, and users can enjoy efficient oil fume removal without much intervention until the next cleaning is required. In addition, through the setting of the exhaust mechanism 3 and the dust removal mechanism 4, the oil fume pollution of the discharged gas is reduced, the purification of the discharged gas is realized, and environmental protection is achieved. At the same time, since the soot is fully treated before entering the impeller 2, the adhesion amount of soot on the impeller 2 is reduced, the load of the motor is reduced, ensuring the high suction operation of the impeller 2 and improving the operation efficiency of the range hood.

[0045] Please refer to Figure 4 and Figure 5, when there is a gap at the fixed position between the impeller 2 and the filter screen 31, additional vibrations will be generated during rotation, which will not only affect the comfort of use, but may also cause early wear or damage to the equipment, and the noise is relatively large during use, affecting the user experience; based on this, in one embodiment, the connecting component 32 includes a mounting shaft 321 and a first limiting member 322. The mounting shaft 321 is coaxially fixed at the central position of the filter screen 31. An installation ring 21 is provided on the impeller 2. The mounting shaft 321 is inserted into the installation ring 21. Two end faces of the installation ring 21 facing away from each other are respectively set as a first face 22 and a second face 23. The first limiting member 322 is arranged on the mounting shaft 321 and is used to tightly fix with the first face 22 and the second face 23. The first limiting member 322 tightly fixes with the first face 22 and the second face 23, which helps to significantly reduce the installation gap between the filter screen 31 and the impeller 2, so that the filter screen 31 is not easily displaced during operation, thus maintaining a stable rotation state; the coaxial fixation allows the impeller 2 and the filter screen 31 to maintain the same rotation center during rotation, which can minimize the vibrations caused by asymmetric or uneven forces. The stabilizing effect of the first limiting member 322 helps to prevent additional vibrations caused by eccentricity and makes the rotation of the filter screen 31 smoother; by realizing the coaxial fixation of the filter screen 31 and the impeller 2, the first limiting member 322 ensures that they maintain the correct relative position under the condition of high-speed rotation, reducing the wear and damage of components; during operation, the coaxial fixation of the filter screen 31 and the impeller 2 reduces the noise caused by vibrations and asymmetric movements.

[0046] Please refer to Figure 4 and Figure 5, in order to achieve a stable connection between the filter screen 31 and the impeller 2, and at the same time facilitate the user to easily disassemble the filter screen 31 for cleaning or replacement. Based on this, in one embodiment, the first limiting member 322 includes a base 3221, a guiding shaft 3222, a top seat 3223, a first spring 3224, an adjusting plate 3225, a supporting shaft 3226 and a fastener 3227. The base 3221, the guiding shaft 3222 and the top seat 3223 are arranged coaxially in sequence. The base 3221 is coaxially fixed to one end of the mounting shaft 321. The guiding shaft 3222 is fixed to the end of the base 3221 away from the mounting shaft 321. A first guiding hole 3228 is provided in the top seat 3223, and the guiding shaft 3222 is slidably mounted in the first guiding hole 3228. A second guiding hole 3229 is also provided in the top seat 3223. The first spring 3224 is arranged in the second guiding hole 3229 and connected to the adjusting plate 3225. The adjusting plate 3225 is coaxially arranged with the guiding shaft 3222. The adjusting plate 3225 is arranged outside the second guiding hole 3229. The cross-sectional diameter of the adjusting plate 3225 is larger than the cross-sectional diameter of the second guiding hole 3229. The supporting shaft 3226 is arranged in an openable and closable manner on the circumference of the base 3221 and is hinged to the end of the base 3221 away from the mounting shaft 321. The adjusting plate 3225 is used to adjust the opening and closing angle of the supporting shaft 3226. One end of the supporting shaft 3226 close to the mounting shaft 321 abuts against the first surface 22. Threads are provided on the mounting shaft 321. The fastener 3227 is in threaded cooperation with the mounting shaft 321 and abuts against and is fixed to the second surface 23.

[0047] The working principle of the first limiting member 322 in this application is as follows:

[0048] When installing and fixing the filter screen 31 and the impeller 2, pass the base 3221 through the mounting ring 21. At this time, the supporting shaft 3226 is closely attached to the circumferential outer wall of the base 3221. When the supporting shaft 3226 completely passes through the mounting ring 21, pull the mounting shaft 321 back towards the mounting ring 21. At this time, the guiding shaft 3222 slides along the first guiding hole 3228, the first spring 3224 is compressed, the adjusting plate 3225 abuts against the top seat 3223 and causes the supporting shaft 3226 to spread along the hinged position. The supporting shaft 3226 abuts tightly against and is fixed to the first surface 22. Through the threaded cooperation between the fastener 3227 and the mounting shaft 321, the fastener 3227 abuts tightly against and is fixed to the second surface 23, realizing the tight fixation between the first limiting member 322 and the first surface 22 and the second surface 23 of the mounting ring 21.

[0049] The first limiting member 322 provides a reliable fixed connection between the filter screen 31 and the impeller 2 through structures such as the base 3221, the guide shaft 3222, and the top seat 3223, ensuring that the relative position between the impeller 2 and the filter screen 31 does not shift during the operation of the range hood, thereby maintaining effective oil extraction performance; the design of the first limiting member 322 makes the installation and disassembly process of the filter screen 31 and the impeller 2 simple. When it is necessary to clean or replace the filter screen 31, by loosening the fastener 3227 and adjusting the opening and closing angle of the support shaft 3226, the disassembly and installation can be easily carried out, which is very important for maintenance and can save time and labor costs; during operation, the range hood will generate vibration and impact, and the first limiting member 322 realizes the stable installation of the filter screen 31, which can not only protect the filter screen 31 and other components, but also reduce noise and improve the user experience.

[0050] Please refer to Figure 7 and Figure 8, in order to further restrict the lateral displacement of the mounting shaft 321 and ensure the stable installation of the mounting shaft 321. Based on this, in one embodiment, the connecting component 32 further includes a second limiting member 323. The second limiting member 323 includes a limiting block 3231, a second spring 3232, and a sliding member 3233. A chute 24 is provided on the mounting ring 21. The limiting block 3231 is slidably mounted in the chute 24. A third guiding hole 3234 is provided in the limiting block 3231. A round hole 3235 communicating with the third guiding hole 3234 is further provided on the limiting block 3231. A through hole 25 corresponding to the round hole 3235 is provided on the bottom surface of the chute 24. The second spring 3232 is disposed in the third guiding hole 3234. The second spring 3232 is connected to the sliding member 3233. The sliding member 3233 is slidably disposed in the round hole 3235 and the through hole 25. The second limiting member 323 is composed of the limiting block 3231, the second spring 3232, and the sliding member 3233. The limiting block 3231 is slidably mounted in the chute 24 on the mounting ring 21 and is associated through the second spring 3232 and the sliding member 3233. The second spring 3232 is located in the third guiding hole 3234 and is connected to the sliding member 3233. The sliding member 3233 then slidably passes through the round hole 3235 on the limiting block 3231 and the through hole 25 of the chute 24. Through the design of the limiting block 3231 and the spring, the second limiting member 323 can effectively limit the rotation range of the mounting shaft 321, reduce the lateral displacement of the mounting shaft 321 during operation, and make the structure between the impeller 2 and the filter screen 31 more stable; form a tight press fit between the filter screen 31 and the mounting shaft 321, enhance the friction force between them, and effectively improve the ability to transmit torque; due to the action of the limiting block 3231 and the sliding member 3233, any rotation of the mounting shaft 321 during operation will be firmly fixed, and the contact between the mounting shaft 321 and the mounting ring 21 greatly enhances the stability of the force application, so that it can withstand a greater working torque, reduce the load fluctuation caused by sudden changes in the dust concentration during the filtering and smoke exhaust processes, and reduce the possibility of fatigue damage of the filter screen 31.

[0051] Please refer to Figure 4 and Figure 6, Based on this, in one embodiment, an oil collecting tank 7 is also embedded on the housing 1. The oil collecting tank 7 is detachably installed on the housing 1. The oil collecting tank 7 is disposed opposite to the filter screen 31. A fuel pump 8 is provided at the bottom of the oil collecting tank 7. A drain tank 9 is connected to the fuel pump 8. The fuel pump 8 is used to adsorb and collect the oil stains on the oil collecting tank 7 into the drain tank 9. The oil collecting tank 7 is disposed opposite to the filter screen 31. When the filter screen 31 separates the oil stains by centrifugal force, it can efficiently collect the oil stains generated during the oil fume process. When the oil droplets in the oil fume pass through the filter screen 31, some of them will deposit into the oil collecting tank 7 to achieve the collection of the oil stains; the detachable design of the oil collecting tank 7 makes cleaning and maintenance simple. Users can regularly clean the oil collecting tank 7 to ensure its effectiveness and keep the range hood clean; the main function of the fuel pump 8 is to adsorb and transfer the oil stains collected in the oil collecting tank 7 to the drain tank 9, ensuring that the oil stains do not stay in the oil collecting tank 7 for too long, avoiding the problem of oil adhesion and difficult cleaning caused by too long time; the drain tank 9 is used to collect the oil stains transferred by the fuel pump 8.

[0052] Please refer to Figure 4 and Figure 6 , In order to avoid secondary dispersion of the soot and improve the dust removal effect, based on this, in one embodiment, a dust collecting box 10 is also provided inside the housing 1. The air inlet on the dust collecting box 10 is disposed opposite to the dust removing mechanism 4. A fan 11 is also provided inside the dust collecting box 10. The air inlet of the dust collecting box 10 is disposed opposite to the dust removing mechanism 4, which can efficiently capture the soot particles cleaned from the filter screen 31; it ensures that when the dust on the filter screen 31 is removed, the soot can be effectively collected in time to avoid secondary dispersion; the dust collecting box 10 can carry a large amount of soot, reducing its circulation inside the equipment, and can achieve good separation of the oil and soot, reducing the pollution to other components inside the equipment; the operation of the fan 11 not only attracts the soot and oil mist into the dust collecting box 10, but also enhances its sedimentation speed inside the dust collecting box 10, making smaller particles also effectively fall into the dust collecting box 10 to improve the dust removal effect.

[0053] Please refer to Figure 1 , Figure 2 and Figure 3, in order to effectively remove dust and oil stains on the filter screen 31 under different working conditions, based on this, in one embodiment, the opening and closing mechanism 42 includes a first mounting plate 421, a first connecting member 422, a second mounting plate 423, a second connecting member 424 and a fixing member 425. The first mounting plate 421 is fixed to the housing 1, the first connecting member 422 is integrally formed on the first mounting plate 421, the second mounting plate 423 is hinged to the first mounting plate 421, the brush 41 is fixed to the second mounting plate 423, the second connecting member 424 is fixed to a surface of the second mounting plate 423 close to the first connecting member 422, a first notch 426 is provided on the first connecting member 422, a second notch 427 is provided on the second connecting member 424, the first notch 426 and the second notch 427 are arranged opposite to each other, and the fixing member 425 is inserted through and slidably mounted in the first notch 426 and the second notch 427. By adjusting the mounting position of the fixing member 425 on the first connecting member 422 and the second connecting member 424, the working angle of the brush 41 is adjusted. By adjusting the mounting position of the fixing member 425 in the first notch 426 and the second notch 427, the user can flexibly adjust the working angle of the brush 41 according to actual needs, so that it can contact different angles and parts of the filter screen 31, effectively removing dust and oil stains on the filter screen 31; under different working conditions (such as high oil fume concentration and a large amount of dust accumulation), adjusting the angle of the brush 41 can make it more conform to the filter screen 31, enhancing the cleaning effect and improving the cleaning efficiency; adjusting the working angle of the brush 41 can avoid local excessive wear caused by a fixed angle. Through reasonable angle setting, it can be ensured that the brush 41 evenly contacts the filter screen 31, reducing the single-point pressure and prolonging the service life of the brush 41 and the filter screen 31; a suitable working angle can reduce the resistance of the brush 41 during operation, reduce the burden on the motor, and contribute to improving the operating efficiency of the overall range hood.

[0054] Please refer to Figure 1 , Figure 2 and Figure 3, in order to improve the fastening effect of the fastener 3227 and facilitate the user to adjust the angle of the brush 41. Based on this, in one embodiment, the fixing member 425 includes a connecting seat 4251, a first sliding piece 4252, a second sliding piece 4253, a third sliding piece 4254, a fourth sliding piece 4255 and a holding portion 4256. The first sliding piece 4252, the second sliding piece 4253, the third sliding piece 4254 and the fourth sliding piece 4255 are slidably mounted on the connecting seat 4251. The second sliding piece 4253 and the third sliding piece 4254 are used to clamp and fix the first connecting member 422 and the second connecting member 424. Tooth patterns 4257 that mesh with each other are provided on the end faces of the first sliding piece 4252 and the second sliding piece 4253 that are close to each other. Tooth patterns 4257 that mesh with each other are provided on the end faces of the third sliding piece 4254 and the fourth sliding piece 4255 that are close to each other. The holding portion 4256 is rotatably mounted at one end of the connecting seat 4251. An eccentric wheel 4258 is provided on the holding portion 4256, and the eccentric wheel 4258 abuts against the fourth sliding piece 4255. Through the relative movement of the sliding pieces, the fixing member 425 can achieve precise adjustment of the working angle of the brush 41. The user can rotate the holding portion 4256 and utilize the effect of the eccentric wheel 4258 to improve the flexibility of adjustment; the design of the fixing member 425 allows the user to set multiple working angles to meet different cleaning requirements and environments. Through the design of the holding portion 4256 and the eccentric wheel 4258, the user can conveniently manually adjust the tightness between each group of sliding pieces without disassembling the equipment or performing complex operations, providing the user with a convenient maintenance experience and reducing the time and energy consumption during equipment cleaning; in addition, the setting of the tooth patterns 4257 increases the friction force between the sliding pieces and improves the fastening effect of the fixing member 425.

[0055] In order to ensure the stable operation of the equipment and improve the reliability of the equipment. Based on this, in one embodiment, the oil pump 8 and the blower 11 are communicatively connected to the controller 6. The controller 6 regulates the operating states of the oil pump 8 and the blower 11 according to the data measured by the sensor 5. The sensor 5 is responsible for detecting the surrounding soot concentration and feeding it back to the controller 6 in real time. When the soot concentration increases, the controller 6 can automatically adjust the working states of the oil pump 8 and the blower 11, increasing the suction force or the delivery volume of the oil pump 8 to ensure efficient removal of soot. This feature ensures that the equipment can automatically adapt to different cooking situations and improves the working efficiency; through the data interaction with the sensor 5, the system can dynamically adjust the operation of the blower 11 and the oil pump 8. For example, when the soot concentration is low, the rotation speed of the blower 11 is reduced to reduce energy consumption. When stronger suction is required, the rotation speed of the blower 11 is quickly increased, thus saving energy to the greatest extent while ensuring the oil fume extraction effect; by monitoring the soot concentration in real time, the controller 6 can effectively prevent the blower 11 and the oil pump 8 from operating under unnecessary high loads, reducing equipment wear and extending the service life of the equipment. Reasonable control and adjustment ensure the stable operation of the equipment and improve the reliability of the equipment.

[0056] To facilitate the disassembly and replacement of the brush 41 by the user and improve the installation accuracy of the brush 41, based on this, in one embodiment, the brush 41 is magnetically adsorbed on the second mounting plate 423. The magnetic adsorption design enables the user to easily remove the brush 41 from the second mounting plate 423 when the brush 41 needs to be replaced or cleaned, without the need to use tools or disassemble complex structures. This convenience greatly saves time, improves the user experience, and reduces the trouble and complexity of operation; magnetic adsorption enables the user to intuitively perceive the position and state of the brush 41. The user only needs to align the new brush 41 with the installation position, and it can be safely and quickly adsorbed in place, reducing the risk of errors during the replacement process; during use, magnetic adsorption can maintain the stability of the brush 41, preventing the brush 41 from loosening or falling due to vibration, tilting, etc., and ensuring the safety and stability during the operation of the device.

[0057] The above is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form an equivalent embodiment with equivalent changes, but as long as the technical content of the present invention is not departed from, any brief modification, equivalent change, and modification made to the above embodiment according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An environmentally friendly range hood based on dynamic smoke separation technology, characterized in that: It includes a housing, a motor, an impeller, a smoke exhaust mechanism, a dust removal mechanism, a sensor and a controller. The impeller is rotatably installed in the housing and driven by the motor. The smoke exhaust mechanism includes a filter and a connecting assembly. The filter is coaxially rotatably installed with the impeller through the connecting assembly. The filter is a diamond mesh oil filter formed by interweaving multiple groups of curves. The dust removal mechanism is used to remove dust adhered to the filter. The dust removal mechanism includes a brush and an opening and closing mechanism. The opening and closing mechanism is arranged on the housing. The brush is arranged on the opening and closing mechanism. The opening and closing mechanism is used to adjust the working angle of the brush. The sensor is used to detect the smoke concentration around the range hood and feed back the detected data to the controller. The smoke exhaust mechanism and the dust removal mechanism are connected to the controller for communication. The connecting assembly includes a mounting shaft and a first stopper and a second stopper, the mounting shaft being coaxially fixed to the center position of the filter screen, a mounting ring being provided on the impeller, the mounting shaft being inserted into the mounting ring, and two end faces of the mounting ring which are opposite to each other are respectively provided as a first face and a second face, the first stopper is provided on the mounting shaft for being tightly fixed to the first face and the second face; the first stopper includes a base, a guide shaft, a top seat, a first spring, an adjustment plate, a support shaft and a fastener, the base, the guide shaft and the top seat being coaxially provided in sequence, the base being coaxially fixed to one end of the mounting shaft, the guide shaft being fixed to an end of the base away from the mounting shaft, and a A first guide hole, the guide shaft is slidably installed in the first guide hole, and a second guide hole is also provided in the top seat. The first spring is arranged in the second guide hole and is connected to the adjustment plate. The adjustment plate is coaxially arranged with the guide shaft, and the adjustment plate is arranged on the outside of the second guide hole. The cross-sectional diameter of the adjustment plate is larger than the cross-sectional diameter of the second guide hole. The support shaft is opened and closed on the circumference of the base and is hinged to one end of the base away from the mounting shaft. The adjustment plate is used to adjust the opening and closing angle of the support shaft. One end of the support shaft close to the mounting shaft abuts against the first surface. A thread is provided on the mounting shaft. The fastener cooperates with the mounting shaft thread and is fixed against the second surface.

2. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 1, characterized in that: The second limit member includes a limit block, a second spring and a sliding member. A sliding groove is provided on the mounting ring. The limit block is slidably installed in the sliding groove. A third guide hole is provided in the limit block. A circular hole penetrating the third guide hole is also provided on the limit block. A through hole corresponding to the circular hole is provided on the bottom surface of the sliding groove. The second spring is provided in the third guide hole. The second spring is connected to the sliding member. The sliding member is slidably provided in the circular hole and the through hole.

3. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 1, characterized in that: An oil collecting trough is also embedded in the shell, and the oil collecting trough can be detachably installed on the shell. The oil collecting trough is arranged opposite to the filter screen. An oil pump is arranged at the bottom of the oil collecting trough, and an oil drain tank is connected to the oil pump. The oil pump is used to absorb the oil stains on the oil collecting trough and collect them in the oil drain tank.

4. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 3 is characterized by: A dust collecting box is also arranged in the shell, an air inlet on the dust collecting box is arranged opposite to the dust removing mechanism, and a fan is also arranged in the dust collecting box.

5. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 1, characterized in that: The opening and closing mechanism includes a first mounting plate, a first connecting member, a second mounting plate, a second connecting member and a fixing member, the first mounting plate is fixed to the shell, the first connecting member is integrally formed on the first mounting plate, the second mounting plate is hinged to the first mounting plate, the brush is fixed to the second mounting plate, the second connecting member is fixed to a side of the second mounting plate close to the first connecting member, the first connecting member is provided with a first notch, the second connecting member is provided with a second notch, the first notch and the second notch are arranged opposite to each other, the fixing member penetrates through and is slidably installed in the first notch and the second notch, and the operating angle of the brush is adjusted by adjusting the installation position of the fixing member on the first connecting member and the second connecting member.

6. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 5, characterized in that: The fixing member includes a connecting seat, a first slide, a second slide, a third slide, a fourth slide and a holding portion, the first slide, the second slide, the third slide and the fourth slide are slidably installed on the connecting seat, the second slide and the third slide are used to be clamped and fixed with the first connecting member and the second connecting member, the end surfaces of the first slide and the second slide close to each other are provided with mutually meshing teeth, the end surfaces of the third slide and the fourth slide close to each other are provided with mutually meshing teeth, the holding portion is rotatably installed on one end of the connecting seat, the holding portion is provided with an eccentric wheel, and the eccentric wheel is tightly pressed against the fourth slide.

7. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 4, characterized in that: The oil pump and the fan are communicatively connected to the controller, and the controller regulates the operating states of the oil pump and the fan according to the data measured by the sensor.

8. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 5, characterized in that: The brush is magnetically adsorbed on the second mounting plate.

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