Environment-friendly range hood based on dynamic smoke dust separation technology

Abstract

The invention discloses an environment-friendly range hood based on a dynamic smoke dust separation technology, and belongs to the technical field of oil smoke separation. Comprising a shell, a motor, an impeller, a smoke exhaust mechanism, a dust removal mechanism, a sensor and a controller, the impeller is rotationally installed in the shell and driven by the motor, the smoke exhaust mechanism comprises a filter screen and a connecting assembly, the filter screen and the impeller are coaxially and rotationally installed through the connecting assembly, and the filter screen is a diamond mesh oil filter screen formed by interweaving multiple sets of curves; the dust removal mechanism comprises a brush and an opening and closing mechanism, the opening and closing mechanism is arranged on the shell and used for adjusting the working angle of the brush, and the sensor is used for detecting the smoke concentration around the range hood. The smoke and dust separation of the smoke exhaust ventilator is realized, dust in the smoke is effectively separated, the exhausted gas is purified, the pollution to outdoor air is reduced, the accumulation speed of the smoke and dust on the filter screen is reduced through the arrangement of the brush, and the cleaning and maintenance cost of the smoke exhaust ventilator is further reduced.

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: 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] Preferably, the brush is magnetically adsorbed on the second mounting plate.

[0016] The beneficial effects of the present invention are: 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; 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; 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.

[0017] 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

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings required for use in the embodiments of the present invention or the background technology will be described below.

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to illustrate the technical solutions disclosed in the present invention.

[0020] Figure 1 is a schematic diagram of the overall structure of the range hood of the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 for Figure 1 The enlarged view of point B in the middle; Figure 4 is an overall vertical cross-sectional view of the range hood of the present invention; Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 for Figure 4 The enlarged view of point D in the middle; Figure 7 is an overall horizontal cross-sectional view of the range hood of the present invention; Figure 8 for Figure 7 Enlarged view of point E in the middle.

[0021] Legend: 1. Shell; 2. Impeller; 21. Mounting ring; 22. First surface; 23. Second surface; 24. Slide; 25. Through hole; 3. Smoke exhaust mechanism; 31. Filter; 32. Connecting assembly; 321. Mounting shaft; 322. First stopper; 3221. Base; 3222. Guide shaft; 3223. Top seat; 3224. First spring; 3225. Adjustment plate; 3226. Support shaft; 3227. Fastener; 3228. First guide hole; 3229. Second guide hole; 323. Second stopper; 3231. Stop block; 3232. Second spring; 3233. Sliding member; 3234. Third guide hole Toward hole; 3235, round hole; 4, dust removal mechanism; 41, brush; 42, opening and closing mechanism; 421, first mounting plate; 422, first connecting piece; 423, second mounting plate; 424, second connecting piece; 425, fixing piece; 4251, connecting seat; 4252, first slide; 4253, second slide; 4254, third slide; 4255, fourth slide; 4256, gripping part; 4257, tooth pattern; 4258, eccentric wheel; 426, first notch; 427, second notch; 5, sensor; 6, controller; 7, oil collecting tank; 8, oil pump; 9, oil drain tank; 10, dust collecting box; 11, fan. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 only part of the embodiments of the present invention, not all of the embodiments. 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.

[0023] 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.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", The directions or positional relationships indicated by "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The working principle of the range hood in this application is: The impeller 2 of the range hood is driven to rotate by the motor, forming a strong suction force to introduce the oil smoke airflow into the interior of the machine. The smoke and oil smoke mixed gas enters the housing 1 through the air inlet; when the oil smoke passes through the filter 31, since the filter 31 is a diamond mesh oil filter formed by interweaving multiple groups of curves, the oil smoke accumulates on the filter 31, and the geometric shape of the mesh makes the airflow disperse when passing through the filter 31, thereby achieving effective separation of smoke and dust; the filter 31 rotates coaxially with the impeller 2, and the oil stains accumulated on the filter 31 are separated under the centrifugal force, and a part of the smoke and oil smoke are separated from the filter 31, and the remaining smoke continues to accumulate on the filter 31; when the smoke accumulates to a certain extent, the dust removal mechanism 4 comes into play, which includes a brush 41 and an opening and closing mechanism 42, and the opening and closing mechanism 42 adjusts the working angle of the brush 41, thereby ensuring that the brush 41 can fully clean the filter 31, and when the brush 41 contacts the filter 31, it can effectively remove the accumulation on the filter 31 and reduce the possibility of blockage; the smoke concentration in the surrounding environment is monitored in real time through the sensor 5 installed on the equipment. The data collected by the sensor 5 will be fed back to the controller 6, which can adjust the working state of the range hood based on the data, such as increasing the suction power or increasing the dust removal frequency to ensure the best oil fume capture effect; since the controller 6 is connected to the smoke exhaust mechanism 3 and the dust removal mechanism 4, the working mode of the equipment can be automatically adjusted according to the smoke concentration monitored by the sensor 5, thereby optimizing energy consumption and improving efficiency.

[0031] The filter 31 adopts a diamond mesh structure formed by interweaving multiple groups of curves, which can greatly improve the efficiency of collecting oil smoke. When the oil smoke passes through the filter 31, due to its special geometric shape, it can effectively change the direction of the airflow, so that the oil smoke particles can be physically isolated, thereby reducing the content of oil smoke in the airflow; in order to further improve the efficiency of smoke and dust separation, the centrifugal force generated by the coaxial rotation of the impeller 2 and the filter 31 separates the flowing oil droplets and larger particles from the airflow, so that more oil smoke is effectively removed, and these particles will not be retained on the filter 31 for a long time, reducing the incidence of blockage. At the same time, the dust removal mechanism 4 is set to reduce the accumulation of smoke on the filter 31. Through the effective separation of smoke, the accumulation speed of smoke and oil stains on the filter 31 is significantly reduced, and the filter can be kept clean for a long period of time, extending the service life of the filter 31. The cost caused by frequent replacement of the filter 31 is reduced; the setting of the filter 31 and the dust removal mechanism 4 realizes the separation of smoke and dust, and the frequency of users needing to regularly clean or replace the filter 31 is reduced, which reduces the maintenance burden of users in daily use and improves the convenience of use; with reduced maintenance, the equipment can maintain higher efficiency and better performance, and users can enjoy efficient oil fume removal without much intervention until the next time cleaning is needed; in addition, through the setting of the smoke exhaust mechanism 3 and the dust removal mechanism 4, the oil fume pollution of the exhaust gas is reduced, the exhaust gas is purified, and the environment is protected. At the same time, since the smoke is fully processed before entering the impeller 2, the amount of smoke attached to the impeller 2 is reduced, the load of the motor is reduced, the high suction operation of the impeller 2 is guaranteed, and the operation efficiency of the range hood is improved.

[0032] See also Figure 4 and Figure 5When there is a gap at the fixed position between the impeller 2 and the filter screen 31, additional vibration will be generated during the rotation process, which will not only affect the comfort of use, but also may cause early wear or damage to the equipment. There will be a lot of noise during use, which will affect the user experience. Based on this, in one embodiment, the connecting component 32 includes a mounting shaft 321 and a first limiter 322. The mounting shaft 321 is coaxially fixed to the center position of the filter screen 31. A mounting ring 21 is provided on the impeller 2. The mounting shaft 321 is inserted into the mounting ring 21. The two end surfaces of the mounting ring 21 that are opposite to each other are respectively set as the first surface 22 and the second surface 23. The first limiter 322 is set on the mounting shaft 321 for being tightly fixed to the first surface 22 and the second surface 23. The first limit member 322 is tightly fixed to the first surface 22 and the second surface 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 offset during operation, thereby maintaining a stable rotation state; the coaxial fixation allows the impeller 2 and the filter screen 31 to maintain a consistent rotation center during rotation, which can minimize the vibration caused by asymmetric or uneven force. The stabilizing effect of the first limit member 322 helps to prevent additional vibration caused by eccentricity, making the rotation of the filter screen 31 more stable; by achieving coaxial fixation of the filter screen 31 and the impeller 2, the first limit member 322 ensures that the two maintain the correct relative position under high-speed rotation, reducing wear and damage of components; during operation, the coaxial fixation of the filter screen 31 and the impeller 2 reduces noise caused by vibration and asymmetric movement.

[0033] See also Figure 4 and Figure 5In order to achieve a stable connection between the filter screen 31 and the impeller 2 and to facilitate the user to easily disassemble the filter screen 31 for cleaning or replacement, based on this, in one embodiment, the first limit member 322 includes a base 3221, a guide shaft 3222, a top seat 3223, a first spring 3224, an adjustment plate 3225, a support shaft 3226 and a fastener 3227. The base 3221, the guide shaft 3222 and the top seat 3223 are coaxially arranged in sequence, the base 3221 is coaxially fixed with one end of the mounting shaft 321, the guide shaft 3222 is fixed to the end of the base 3221 away from the mounting shaft 321, a first guide hole 3228 is arranged in the top seat 3223, the guide shaft 3222 is slidably installed in the first guide hole 3228, and a first spring 3224 is also arranged in the top seat 3223. Two guide holes 3229, the first spring 3224 is arranged in the second guide hole 3229 and is connected to the adjustment plate 3225, the adjustment plate 3225 is coaxially arranged with the guide shaft 3222, the adjustment plate 3225 is arranged on the outside of the second guide hole 3229, the cross-sectional diameter of the adjustment plate 3225 is larger than the cross-sectional diameter of the second guide hole 3229, the support shaft 3226 is opened and closed on the circumference of the base 3221, and is hinged to the end of the base 3221 away from the mounting shaft 321, the adjustment plate 3225 is used to adjust the opening and closing angle of the support shaft 3226, the end of the support shaft 3226 close to the mounting shaft 321 abuts against the first surface 22, the mounting shaft 321 is provided with a thread, the fastener 3227 is threadedly matched with the mounting shaft 321, and is abutted and fixed against the second surface 23.

[0034] The working principle of the first limiting member 322 in the present application is: When the filter screen 31 and the impeller 2 are installed and fixed, the base 3221 is passed through the mounting ring 21. At this time, the support shaft 3226 is close to the circumferential outer wall of the base 3221. After the support shaft 3226 completely passes through the mounting ring 21, the mounting shaft 321 is pulled back in the direction of the mounting ring 21. At this time, the guide shaft 3222 slides along the first guide hole 3228, the first spring 3224 is compressed, the adjustment plate 3225 abuts against the top seat 3223 and causes the support shaft 3226 to spread along the hinge position, and the support shaft 3226 is tightly fixed to the first surface 22. The fastener 3227 is threadedly matched with the mounting shaft 321, so that the fastener 3227 is tightly fixed to the second surface 23, thereby realizing the tight fixation between the first limit member 322 and the first surface 22 and the second surface 23 of the mounting ring 21.

[0035] The first limit member 322 provides a reliable fixed connection between the filter 31 and the impeller 2 through the base 3221, the guide shaft 3222, the top seat 3223 and other structures, ensuring that the relative position between the impeller 2 and the filter 31 will not be displaced when the range hood is working, thereby maintaining effective fume extraction performance; the design of the first limit member 322 makes the installation and disassembly process of the filter 31 and the impeller 2 simple. When the filter 31 needs to be cleaned or replaced, it can be easily disassembled and installed by loosening the fastener 3227 and adjusting the opening and closing angle of the support shaft 3226. This is very important for maintenance and can save time and labor costs. During operation, the range hood will generate vibration and impact. The first limit member 322 realizes the stable installation of the filter 31, which can not only protect the filter 31 and other components, but also reduce noise and enhance the user experience.

[0036] See also Figure 7 and Figure 8In order to further limit the lateral displacement of the installation shaft 321 and ensure the stable installation of the installation shaft 321, based on this, in one embodiment, the connecting assembly 32 also 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 sliding groove 24 is provided on the mounting ring 21, the limiting block 3231 is slidably installed in the sliding groove 24, a third guide hole 3234 is provided in the limiting block 3231, a circular hole 3235 penetrating the third guide hole 3234 is also provided on the limiting block 3231, a through hole 25 corresponding to the circular hole 3235 is provided on the bottom surface of the sliding groove 24, the second spring 3232 is provided in the third guide hole 3234, the second spring 3232 is connected to the sliding member 3233, and the sliding member 3233 is slidably provided in the circular hole 3235 and the through hole 25. The second limiting member 323 is composed of a limiting block 3231, a second spring 3232 and a sliding member 3233. The limiting block 3231 is slidably installed in the slide groove 24 on the mounting ring 21, and is associated with the sliding member 3233 through the second spring 3232. The second spring 3232 is located in the third guide hole 3234 and is connected to the sliding member 3233. The sliding member 3233 slides through the circular hole 3235 on the limiting block 3231 and the through hole 25 of the slide groove 24. The second limiting member 323 can effectively limit the rotation range of the mounting shaft 321 through the design of the limiting block 3231 and the spring, thereby reducing the rotation range of the mounting shaft 321 during operation. The lateral displacement during the process makes the structure between the impeller 2 and the filter 31 more stable; a tight press fit is formed between the filter 31 and the mounting shaft 321, which enhances the friction between them and effectively improves the ability to transmit torque; due to the action of the limit 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, so that it can withstand a larger working torque, reduce the load fluctuation caused by the sudden change of smoke concentration during the filtering and exhausting process, and reduce the possibility of fatigue damage to the filter 31.

[0037] See also Figure 4 and Figure 6Based on this, in one embodiment, an oil collecting tank 7 is also embedded in the shell 1, and the oil collecting tank 7 can be detachably installed on the shell 1. The oil collecting tank 7 is arranged opposite to the filter screen 31. An oil pump 8 is arranged at the bottom of the oil collecting tank 7, and the oil pump 8 is connected to an oil drain tank 9. The oil pump 8 is used to absorb the oil stains on the oil collecting tank 7 and collect them in the oil drain tank 9. The oil collecting tank 7 is arranged opposite to the filter 31. When the filter 31 separates the oil stains through centrifugal action, it can efficiently collect the oil stains generated in the oil fume process. When the oil droplets in the oil fume pass through the filter 31, part of them will be deposited in the oil collecting tank 7 to collect the oil stains; the detachable design of the oil collecting tank 7 makes cleaning and maintenance simple. The user can clean the oil collecting tank 7 regularly to ensure its effectiveness and keep the range hood clean; the main function of the oil pump 8 is to absorb the oil stains collected in the oil collecting tank 7 and transfer them to the oil drain tank 9, ensuring that the oil stains will not stay in the oil collecting tank 7 for too long, avoiding the problem of oil adhesion and difficulty in cleaning due to too long time; the oil drain tank 9 is used to collect the oil stains transferred by the oil pump 8.

[0038] See also Figure 4 and Figure 6 In order to prevent the secondary dispersion of smoke and dust and improve the dust removal effect, based on this, in one embodiment, a dust box 10 is further provided in the housing 1, and the air inlet on the dust box 10 is arranged opposite to the dust removal mechanism 4, and a fan 11 is also arranged in the dust box 10. The air inlet of the dust box 10 is arranged opposite to the dust removal mechanism 4, which can effectively capture the smoke particles cleaned from the filter 31; it ensures that when the dust on the filter 31 is removed, the smoke can be effectively collected in time to avoid secondary dispersion; the dust box 10 can carry a large amount of smoke and dust, reduce its circulation inside the device, and can achieve a good separation of grease and smoke and dust, reducing the pollution of other parts inside the device; the work of the fan 11 not only attracts smoke and oil mist into the dust box 10, but also enhances its sedimentation speed in the dust box 10, so that smaller particles can also effectively fall into the dust box 10, improving the dust removal effect.

[0039] See also Figure 1 , Figure 2 and Figure 3In order to effectively remove dust and oil 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, and the first connecting member 424 is fixed to the housing 1. The second connecting member 424 is fixed to a side of the second mounting plate 423 close to the first connecting member 422. The first connecting member 422 is provided with a first slot 426, and the second connecting member 424 is provided with a second slot 427. The first slot 426 and the second slot 427 are arranged opposite to each other. The fixing member 425 penetrates and is slidably installed in the first slot 426 and the second slot 427. The operating angle of the brush 41 can be adjusted by adjusting the installation position of the fixing member 425 on the first connecting member 422 and the second connecting member 424. By adjusting the installation position of the fixing member 425 on the first slot 426 and the second slot 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 31, and effectively remove dust and oil stains on the filter 31; under different working conditions (such as high smoke concentration and heavy dust accumulation), adjusting the angle of the brush 41 can make it fit the filter 31 more closely, enhance the cleaning effect, and improve the cleaning efficiency; the adjustment of the working angle of the brush 41 can avoid local excessive wear caused by the fixed angle. Through reasonable angle setting, it can ensure that the brush 41 contacts the filter 31 evenly, reduce single-point pressure, and extend the service life of the brush 41 and the filter 31; the appropriate working angle can reduce the resistance of the brush 41 during operation, reduce the burden on the motor, and help improve the overall operating efficiency of the range hood.

[0040] See also Figure 1 , Figure 2 and Figure 3In 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 slide 4252, a second slide 4253, a third slide 4254, a fourth slide 4255 and a gripping portion 4256, the first slide 4252, the second slide 4253, the third slide 4254 and the fourth slide 4255 are slidably installed on the connecting seat 4251, and the second slide 4253 and the third slide 4254 are slidably installed on the connecting seat 4251. 254 is used to be clamped and fixed with the first connecting member 422 and the second connecting member 424, the end surfaces of the first slide 4252 and the second slide 4253 that are close to each other are provided with mutually meshing teeth 4257, the end surfaces of the third slide 4254 and the fourth slide 4255 that are close to each other are provided with mutually meshing teeth 4257, the holding portion 4256 is rotatably installed on one end of the connecting seat 4251, and the holding portion 4256 is provided with an eccentric wheel 4258, and the eccentric wheel 4258 is tightly pressed against the fourth slide 4255. The fixing part 425 can realize precise adjustment of the working angle of the brush 41 through the relative movement of the sliding piece, and the user can improve the flexibility of adjustment by rotating the grip part 4256 and utilizing the function of the eccentric wheel 4258; the design of the fixing part 425 allows the user to set multiple working angles to cope with different cleaning needs and environments, and through the design of the grip part 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 complicated operations, thereby providing the user with a convenient maintenance experience and reducing the time and energy consumption when cleaning the equipment; in addition, the setting of the tooth pattern 4257 increases the friction between the sliding pieces and improves the tightening effect of the fixing part 425.

[0041] 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 fan 11 are connected to the controller 6 for communication, and the controller 6 adjusts the operating state of the oil pump 8 and the fan 11 according to the data measured by the sensor 5. The sensor 5 is responsible for detecting the surrounding smoke concentration and feeding back to the controller 6 in real time. When the smoke concentration increases, the controller 6 can automatically adjust the working state of the oil pump 8 and the fan 11, increase the suction force or the delivery volume of the oil pump 8, and ensure efficient removal of smoke. This feature ensures that the equipment can automatically adapt to different cooking conditions and improve work efficiency; through data interaction with the sensor 5, the system can dynamically adjust the operation of the fan 11 and the oil pump 8, for example, reduce the speed of the fan 11 when the smoke concentration is low, and reduce energy consumption. When a stronger suction force is needed, the speed of the fan 11 is quickly increased, thereby ensuring the effect of extracting smoke and saving energy to the greatest extent; by real-time monitoring of the smoke concentration, the controller 6 can effectively prevent the fan 11 and the oil pump 8 from running under unnecessary high loads, reducing equipment wear and extending the service life of the equipment. Reasonable control and regulation ensure the stable operation of the equipment and improve the reliability of the equipment.

[0042] In order to facilitate the user to disassemble and replace the brush 41 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 allows 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 using tools or disassembling complex structures. This convenience greatly saves time, improves user experience, and reduces the trouble and complexity of operation; magnetic adsorption allows users to intuitively perceive the position and status 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, avoid the brush 41 from loosening or falling due to vibration, tilt, etc., and ensure the safety and stability of the equipment during operation.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still 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 shell, a motor, an impeller, a smoke exhaust mechanism, a dust removal mechanism, a sensor and a controller. The impeller is rotatably installed in the shell and driven by the motor. The smoke exhaust mechanism includes a filter and a connecting component. The filter is coaxially rotatably installed with the impeller through the connecting component. 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 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.

2. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 1, characterized in that: 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 screen, 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 which 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 with the first surface and the second surface.

3. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 2 is characterized in that: 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 is 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.

4. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 3 is characterized by: The connecting assembly also includes a second limit member, which includes a limit block, a second spring and a sliding member. A sliding groove is provided on the mounting ring, and the limit block is slidably installed in the sliding groove. A third guide hole is provided in the limit block, and a circular hole that passes through 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, and 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.

5. 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.

6. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 5, characterized in that: 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.

7. 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.

8. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 7, 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.

9. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 6, 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.

10. The environmentally friendly range hood based on dynamic smoke separation technology according to claim 7, characterized in that: The brush is magnetically adsorbed on the second mounting plate.

Images