Plant fragrance diffusing device

Abstract

The invention provides a plant fragrance diffuser, and belongs to the field of smart home. The problems that a traditional fragrance management system is harmful to the human body and the air supply angle and distance are limited are solved. The device comprises a crushing assembly which is provided with an inlet end and an outlet end and is used for crushing plants, inputting aromatic compounds into an aroma activation assembly and completing self-cleaning; the aroma activation assembly is used for heating and activating the aromatic compound and enabling the aromatic compound to flow through the heating area under the wrapping of the protective airflow and to be output in an accelerated manner at the Venturi effect nozzle; a plurality of fifth nozzles adjustable in direction are arranged on the end face of one side of the fragrance diffusing assembly, a gas diffusing part used for filtering and discharging gas is arranged on the peripheral side of the fragrance diffusing assembly, and the fragrance diffusing assembly is used for controlling the fifth nozzles to act after detecting the position of the human body and reversely blowing gas to the target side, and the activated aromatic compound is blown out from the target side through the gas diffusing part under the reverse acting force. The perfume is mainly used for releasing plant fragrance.

Description

Technical Field

[0001] This invention belongs to the field of smart home, and in particular relates to a plant fragrance diffuser. Background Technology

[0002] As people's demands for indoor environmental quality continue to rise, odor management has become a standard feature in both commercial and residential settings. Current technologies generally employ a "liquid fragrance source + ultrasonic / compression atomization" approach: fragrances, essential oils, or functional liquid fragrances are broken into micron-sized droplets by high-frequency vibration or pressure nozzles, and then rapidly diffused through an independent fan or air conditioning return vent. While this approach is simple in structure and fast-acting, it has revealed the following common problems during long-term operation: The atomized fragrance carriers are mainly VOCs and PM2.5 droplets, with excessively high initial concentrations, resulting in a noticeably "aggressive" olfactory experience. In places like offices, hospitals, and educational institutions where fragrance is needed for more than 8 hours continuously, users are prone to eye, nose, and throat irritation, headaches, and allergy symptoms. Furthermore, aldehydes and benzene compounds in some fragrances pose a potential risk of chronic toxicity after accumulation in enclosed spaces. Liquid fragrance sources are mostly chemically compounded, lacking the "top-middle-base note" progression characteristic of natural plant-based slow-release fragrances, resulting in a monotonous and fatigue-inducing scent. They also fail to produce accompanying effects such as negative ions and plant bactericides, falling far short of the concepts of "forest bathing" and "natural fragrance."

[0003] After the aroma enters the space with the air conditioning, its flow direction is limited by the swing angle of the traditional louvered grille, resulting in only a fixed cone or fan-shaped jet. This is particularly problematic for spaces with a ceiling height > 3.5m and an area > 100m². 2 In a large open space, the concentration of fragrance is unevenly distributed in the area where people are active. The concentration is too high near the air vents and below the olfactory threshold in the far areas. This needs to be compensated by increasing the initial spray volume, which further exacerbates the health risks. Summary of the Invention

[0004] In view of this, the present invention aims to propose a plant aroma diffuser to solve the problems of traditional aroma management systems being harmful to the human body and having limited air delivery angle and distance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a plant aroma diffuser, comprising: The crushing component, equipped with an inlet and an outlet, is used to crush plants, introduce aromatic compounds into the aroma activation component, and complete self-cleaning. The aroma activation component has its aroma-carrying gas inlet connected to the outlet of the pulverizing component. It is used to heat and activate aromatic compounds and make the aromatic compounds flow through the heating area under the protection of the gas flow and accelerate the output through the Venturi effect nozzle. The aroma dispersing component is connected to a Venturi effect nozzle. Several directionally adjustable fifth nozzles are provided on one end face. A gas dispersing section for filtering and discharging gas is provided on the periphery. A monitoring module is also provided to detect the position of a human body and control the operation of several of the fifth nozzles to blow air in the opposite direction to the target side. The activated aromatic compounds are blown out from the target side through the gas dispersing section by the reverse force.

[0006] Furthermore, the pulverizing assembly includes a pulverizing chamber, a double-layer cutting section disposed within the pulverizing chamber, a plurality of first nozzles disposed at the top of the pulverizing chamber for spraying cleaning agent, a sterilization unit disposed on the peripheral wall of the pulverizing chamber, a piezoelectric ceramic transducer, and a detection module, wherein the double-layer cutting section is provided with at least two relatively rotatable blades, and the blades rotate in opposite directions when the detection module detects an abnormality.

[0007] Furthermore, a filter assembly and a waste recycling section are provided at the bottom of the crushing chamber. The waste is filtered by the filter assembly and then recycled in the waste recycling section.

[0008] Furthermore, the double-layer cutting section is provided in two parts, which are arranged coaxially and spaced apart vertically within the crushing chamber.

[0009] Furthermore, the detection module includes an infrared spectral sensor, a 3D structured light module, a camera matrix, an infrared laser sensor, and an acoustic sensor, wherein the acoustic sensor is used to collect sound signals during the crushing process.

[0010] Furthermore, the aroma activation component also includes a housing, a conventional gas inlet, a non-contact heating component, a dust removal component, and a third nozzle. One end of the housing is an aroma-carrying gas inlet, and the other end is a Venturi effect nozzle. A conventional gas inlet is provided in the middle, and a non-contact heating component and a dust removal component are also provided in the middle for non-contact heating of the aroma-carrying gas. The third nozzle is used to form an air curtain that surrounds the aroma-carrying gas flowing in the middle.

[0011] Furthermore, the aroma activation component also includes a first concentration sensor for detecting aroma concentration.

[0012] Furthermore, a protective air curtain is formed on the outer wall of the gas emanating section.

[0013] Furthermore, the aroma dispersing component has a gas inlet connected to a Venturi effect nozzle on the inner ring of the opposite end face of the fifth nozzle, and an outlet with an electrostatic dust collection screen on the outer ring. A second ultraviolet sterilization lamp array is arranged around the aroma dispersing component.

[0014] Furthermore, the aroma dispersing component is also provided with a mechanical stripping layer arranged directly opposite the gas inlet, which is used to strip impurities from the gas as it passes through.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This diffuser uses plant-based raw materials for pulverization, producing a natural fragrance that differs from traditional fragrance ingredients. Long-term use will not burden the human body. At the same time, the pulverization process, combined with self-cleaning, can keep the gas clean for a long time without producing secondary pollution. This diffuser uses a non-contact heating method when heating and activating aromatic compounds. This method avoids the charring of aroma molecules or the destruction of chemical structure due to local overheating. When activating aromatic compounds by heating, this diffuser uses a protective airflow to prevent activated aroma molecules from condensing or adsorbing when they come into contact with the relatively cool chamber walls during thermal convection and Brownian motion, which would lead to aroma loss and distortion of component ratios. It effectively reduces the heat conduction of the core aroma airflow to the wall surface, and its flow direction also generates an inward micro-pressure difference, pushing the active aroma molecules away from the wall surface and confining them to float and diffuse in the high-temperature area in the middle of the cavity, ensuring full activation. This diffuser abandons the traditional unidirectional fan blades and simple swing structure, and adopts a gas pressurization and directional pushing method, which has a wide air delivery range, is flexible and has low noise. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the structure of the pulverizing component described in this invention; Figure 2 This is a schematic diagram of the aroma activation component described in this invention; Figure 3 This is a schematic diagram of the aroma dispersing component described in this invention.

[0017] Filter assembly 1; Waste recycling section 2; Weight sensor 3; Cutting tool 4; First double-layer cutting section 5; Second double-layer cutting section 6; Infrared spectral sensor 7; 3D structured light module 8; Camera matrix 9; Infrared laser sensor 10; First nozzle 11; Double-layer reverse rotating shaft 12; First ultraviolet sterilization lamp array 13; Piezoelectric ceramic transducer 14; Purification tank 15; Venturi effect nozzle 16; Outer shell 17; Conventional gas inlet 18; Second nozzle 19; First non-contact infrared matrix 20 First concentration sensor 21; Aroma-carrying airflow inlet 22; First electrostatic adsorption layer 23; Second electrostatic adsorption layer 24; Third nozzle 25; Pneumatic thermal suspension field 26; Second non-contact infrared matrix 27; Gas dispersion section 28; Scraping mesh 29; Protective air curtain 30; Infrared temperature sensor 31; Fifth nozzle 32; Third electrostatic adsorption layer 33; Second ultraviolet sterilization lamp array 34; Mechanical peeling layer 35; Gas inlet 36; Outlet with electrostatic dust collection mesh 37; Second concentration sensor 38. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0019] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this invention are defined based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Referring to the accompanying drawings, this embodiment describes a plant aroma diffuser, which mainly includes a pulverizing component, an aroma activating component, and an aroma dispersing component connected in sequence.

[0022] The crushing assembly, serving as the starting point, is used to crush plant materials. Specifically, it includes a filter assembly 1, a waste recovery unit 2, a weight sensor 3, a blade 4, a first double-layer cutting unit 5, a second double-layer cutting unit 6, an infrared spectral sensor 7, a 3D structured light module 8, a camera matrix 9, an infrared laser sensor 10, a first nozzle 11, a double-layer reverse rotating shaft 12, a first ultraviolet sterilization lamp array 13, and a piezoelectric ceramic transducer 14. The crushing assembly is equipped with a first outer shell, specifically a closed cylindrical shape. The raw material inlet can be positioned on the upper or lower side wall as needed for adding raw materials. To ensure the crushing process is not affected by external factors, a matching door is provided at the inlet for sealing; the sealing method can be reasonably set according to actual needs. Inside the first outer shell, the first double-layer cutting unit 5 and the second double-layer cutting unit 6 are arranged vertically at intervals. Depending on the amount of material added, the first double-layer cutting unit 5 can operate independently, or the first double-layer cutting unit 5 and the second double-layer cutting unit 6 can operate synchronously. Both the first double-layer cutting section 5 and the second double-layer cutting section 6 are equipped with double-layer blades 4. The double-layer blades are connected by a double-layer reverse rotating shaft 12. The double-layer reverse rotating shaft 12 can rotate in the same direction and at the same speed, or rotate in opposite directions. The corresponding driving method and transmission structure can be reasonably set according to actual needs. In conjunction with this operation mode, a matching acoustic sensor is installed in the first housing to collect the acoustic signal inside the first housing. The acoustic signal is compared with the acoustic signal of normal crushing. When an abnormal signal is detected, the double-layer blades 4 are controlled to rotate in the reverse direction to expel foreign objects, preventing structural damage to the blades 4 and thus improving the reliability of operation. The determination of whether the first double-layer cutting section 5 operates alone or the first double-layer cutting section 5 and the second double-layer cutting section 6 operate in conjunction is made by a weight sensor 3 installed at the bottom.

[0023] The bottom of the first outer shell is provided with a filter assembly 1 and a waste recycling section 2. Specifically, the filter assembly 1 is a filter screen, and the waste recycling section 2 is a box located below the filter screen. It is connected to the first outer shell by a pull-out method. The box is pulled out periodically to empty the waste and prevent the generation of odors. Of course, the waste recycling section 2 can also be set as a collection container with one-way opening and arranged separately from the first outer shell to prevent backflow of odors.

[0024] To ensure the cleanliness of the output gas, a first ultraviolet sterilization lamp array 13 is installed on the inner wall of the first housing to sterilize the gas as needed. At the top of the first housing, a first nozzle array 11 is arranged in a circular pattern. Depending on the nature of the residual material, different combinations of media are selectively sprayed: for dry powder residue, a high-speed pulsed airflow is used for purging; for sugar or oil residue, a slightly heated, biodegradable, environmentally friendly cleaning solution is sprayed first, which effectively dissolves sugar and oil. A piezoelectric ceramic transducer 14 can be integrated in a suitable location, such as on the tool base of the first double-layer cutting section 5 and the second double-layer cutting section 6, or on the inner wall of the first housing. After the cleaning solution is filled, the piezoelectric ceramic transducer 14 is activated. The piezoelectric ceramic transducer integrated into the tool base and cavity wall generates high-frequency vibration, inducing a dense cavitation effect in the cleaning solution. This generates countless tiny bubbles that violently burst on the tool surface and in all gaps, producing powerful local impact and shear forces that completely remove tiny residues that are difficult to see with the naked eye. This process, combined with the slow forward and reverse rotation of the blades, ensures no blind spots in cleaning. The cleaning fluid and stripped contaminants are rapidly drawn in by the negative pressure device in the waste recovery section 2 at the bottom of the chamber. After the solid residue is separated by the filter assembly 1, the cleaning fluid is recycled to the purification storage tank 15. After ultraviolet sterilization and filtration, it can be used again. Existing technology can be used to handle the suction of the cleaning agent and the storage and disinfection of the cleaning fluid in conjunction with the negative pressure device in the purification storage tank 15. Alternatively, the purification storage tank 15 can be removed without affecting the entire processing flow. Finally, the system initiates a gentle PTC heating and drying program, blowing clean hot air at 50-60℃ into the chamber to ensure that the blades 4 and the chamber are completely dry in a short time, eliminating the environment for microbial growth. The air is also blown in through the first nozzle 11 at the top. The water consumption, power consumption, and key hygiene indicators of the entire crushing and cleaning process are displayed on the user interface, completing a complete, hygienic, and intelligent closed-loop process from identification and crushing to self-cleaning. Multiple first nozzles 11 are provided, which can be connected to different raw material bins as needed.

[0025] The aroma activation component mainly includes a Venturi effect nozzle 16, a housing 17, a conventional gas inlet 18, a second nozzle 19, a first non-contact infrared matrix 20, a first concentration sensor 21, an aroma-carrying gas inlet 22, a first electrostatic adsorption layer 23, a second electrostatic adsorption layer 24, a third nozzle 25, a pneumatic thermal suspension field 26, and a second non-contact infrared matrix 27. The aroma activation component is provided with a second housing, which is provided with a through air duct. The inlet end of the air duct is set as the aroma-carrying gas inlet 22, which is connected to the gas outlet end of the first housing through a power component such as an air pump. The other end of the air duct is set as the Venturi effect nozzle 16, which is used to accelerate the output of the gas. The middle position of the air duct is set as the heating zone. The first electrostatic adsorption layer 23 and the second electrostatic adsorption layer 24 are arranged oppositely on the upper and lower sides of the heating zone, which are used to adsorb impurities, dust, etc. contained in the gas when energized, and separate them from the gas. Simultaneously, a first non-contact infrared matrix 20 and a second non-contact infrared matrix 27 are positioned vertically relative to each other, forming an aerodynamic thermal suspension field 26 between them. Unlike traditional heating wires or heating plates, the first and second non-contact infrared matrices 20 and 27 are matrices composed of dozens of independently temperature-controlled micro far-infrared emitting units. These emitting units have high emissivity at a specific wavelength, where far-infrared rays can be efficiently absorbed by water molecules and most organic matter, converting them into internal energy, but their heating efficiency for the air itself is very low. Based on the material characteristics, the system selectively activates emitting units in different areas and operates in a pulsed manner. This allows the aroma molecules and water molecules in the fragrance-carrying air to be directly and uniformly excited by far-infrared rays during the airflow, causing the temperature to rise gradually to the preset optimal evaporation temperature range. Meanwhile, the temperature of the chamber wall itself remains significantly lower than that of traditional contact heating, fundamentally avoiding the charring or chemical structure damage of aroma molecules caused by localized overheating.

[0026] Along the axial direction of the air duct, an annular slit, also known as the third nozzle 25, is set at the aroma-carrying airflow inlet 22. From this nozzle, a precisely temperature-controlled inert protective air curtain, nearly identical in temperature to the core area, is continuously blown out. This slowly flowing, warm air curtain forms a dynamic, heat-insulating barrier between the hot core airflow and the cold metal wall. It effectively reduces heat conduction from the core aroma airflow to the wall, and its flow direction also generates an inward micro-pressure difference, pushing the active aroma molecules away from the wall and confining them to float and diffuse in the high-temperature central region of the air duct, ensuring full activation.

[0027] Finally, the aroma, heated by the air duct, is emitted through the Venturi effect nozzle 16. The nozzle's contraction-expansion structure not only accelerates the airflow, but the resulting localized low-pressure zone also draws in a small amount of unheated air rich in fresh aroma molecules from the conventional gas inlet 18 at the top of the second outer shell for mixing. This allows for precise fine-tuning of temperature and concentration, ensuring a rich and layered aroma with a suitable temperature, completely avoiding the dryness or burnt smell associated with traditional heating methods. The entire heating process is monitored in real-time by a high-precision thermocouple array and infrared temperature sensor 31 in a closed loop. A PID control algorithm dynamically adjusts the power of the far-infrared emitting unit and the temperature of the protective air curtain, keeping temperature fluctuations in the core aroma region within ±0.5℃. By learning the optimal thermal excitation curves of different plant materials, the system continuously optimizes the heating strategy, ensuring that each aroma release is a vivid interpretation of the plant's essence.

[0028] The aroma dispersing assembly includes a gas dispersing section 28, a scraping mesh 29, a protective air curtain 30, an infrared temperature sensor 31, a fifth nozzle 32, a third electrostatic adsorption layer 33, a second ultraviolet sterilization lamp array 34, a mechanical stripping layer 35, a gas inlet 36, an outlet with an electrostatic dust collection mesh 37, and a concentration sensor 38. The gas dispersing section 28 is specifically a ring-shaped dense mesh with a frame in the middle supporting the top and bottom walls. Gaps are provided at the edges of the top and bottom walls to form the protective air curtain 30, allowing the protective air curtain 30 to wrap around the outer layer of the gas dispersing section 28 during aroma dispersing operation. The top wall has an array of fifth nozzles 32, and the inner ring of the bottom wall has a gas inlet 36 connected to a Venturi effect nozzle 16. The connection method can be reasonably configured according to actual needs, for example, through a flexible hose. The outer ring of the bottom wall is equipped with an electrostatic dust collection mesh outlet 37, which can adsorb dust stripped from the gas. To ensure that the dust in the gas can be stripped, a mechanical stripping layer 35, which is adapted to the shape and size of the gas inlet 36, is fixed at a certain distance directly opposite the gas inlet 36. Specifically, the mechanical stripping layer 35 is annular with some protrusions on its surface, so that a separation angle is generated when the gas flows through the mechanical stripping layer 35, thereby ultimately causing the dust to be adsorbed by the electrostatic dust collection mesh outlet 37. The mechanical stripping layer 35 can be fixed to the scraping mesh 29 by a bracket, or it can be supported on the bottom wall of the second shell and detachably connected by bolts for easy subsequent maintenance.

[0029] To extend the service life of the gas dispersing section 28, a rotating shaft is coaxially arranged inside the aroma dispersing component. The shaft is connected to the drive motor via a transmission device. The shaft is connected to the scraping screen 29 via a rod, so that when the shaft rotates, it can drive the scraping screen 29 to move relative to the gas dispersing section 28. Since the scraping screen 29 is in contact with the gas dispersing section 28, the dust accumulated on the gas dispersing section 28 can be scraped off and then captured by the electrostatic dust collection screen outlet 37.

[0030] During operation, after the user places the plant material into the crushing assembly, the inlet door of the crushing assembly closes to form a sealed space, and the system immediately starts. Weight sensor 3 first records the initial mass, while camera matrix 9 and 3D structured light module 8 simultaneously scan the material to obtain its dimensions, estimated hardness, and initial moisture content range. At the same time, infrared spectroscopy sensor 7 rapidly scans and accurately analyzes the real-time moisture content and the proportions of structural components such as lignin and cellulose. The central processing unit integrates this data and compares it with the built-in material crushing characteristic database to intelligently determine the material type and generate a corresponding crushing prescription. This prescription details the crushing strategy, including blade type selection, optimal rotation speed curve, crushing duration, and whether pre-freezing treatment is required.

[0031] The pulverization process takes place within a completely sealed pulverization chamber, with its core being dynamic adaptation to pulverization and process contamination control. First, according to the formula, the double-layer cutting section starts at a preset speed and direction. For dry materials, high-speed interlaced shearing is used to instantly crush them into uniform powder; for wet, soft materials, a combination of low-speed crushing and intermittent cutting is employed to avoid sap splashing and blade sticking. Throughout the process, miniature, high-sensitivity acoustic sensors installed within the chamber monitor the frequency and amplitude of the pulverization sound in real time, comparing it with a preset healthy pulverization sound signature model. If abnormal noise is detected, or if the torque sensor detects a sudden increase in resistance, the system will stop within milliseconds and reverse blade 4 to expel foreign matter, preventing damage to the blade head. More importantly, to prevent plant residues and sap from accumulating and breeding bacteria within the complex geometry of the blade assembly and shaft gaps, the system employs a dry-wet separation and anti-sticking design. The surface of the blade 4 is treated with a special superhydrophobic and oleophobic nano-coating. At the same time, when crushing high-sugar or high-oil materials, the system will precisely spray a very small amount of edible anti-adhesion powder from the first nozzle 11 to form a temporary protective layer on the blade surface, making it difficult for debris to adhere.

[0032] After the pulverization operation is completed, the system immediately and seamlessly enters a self-cleaning cycle, which is crucial for ensuring long-term hygiene and cleanliness. The cleaning program is intelligently generated based on the type of material just processed and the pulverization time. First, multiple first nozzles 11 located at the top of the pulverization chamber selectively spray different combinations of media according to the nature of the material residue: for dry powder residue, a high-speed pulsed airflow is used for purging; for sugar or oil residue, a slightly heated, biodegradable, environmentally friendly cleaning fluid is sprayed first, which can effectively dissolve sugar and oil. Subsequently, the piezoelectric ceramic transducer 14 is activated. The piezoelectric ceramic transducer 14, integrated into the cutter base and the wall of the pulverization chamber, generates high-frequency vibration, inducing a dense cavitation effect in the cleaning fluid, generating countless tiny bubbles that violently burst on the blade surface and in all gaps, generating powerful local impact and shearing forces to completely remove tiny residues that are difficult to see with the naked eye. This process, combined with the low-speed forward and reverse rotation of the cutter 4, ensures no cleaning dead corners. The cleaning fluid and stripped contaminants are rapidly drawn in by the negative pressure device of the filter assembly 1 at the bottom of the chamber. After the solid residue is separated by the filter assembly 1, the cleaning fluid is recycled to the purification storage tank, where it is sterilized and filtered by ultraviolet light before being reused. Finally, the system initiates a gentle PTC heating and drying program, blowing clean hot air at 50-60°C into the chamber to ensure that the blades 4 and the chamber are completely dry in a short time, eliminating the environment for microbial growth. The water and power consumption, as well as key hygiene indicators, of the entire pulverizing and cleaning process are displayed on the user interface, completing a complete, hygienic, and intelligent closed-loop process from identification and pulverization to self-cleaning.

[0033] The aroma activation component is key to stimulating and regulating aroma. Its design aims to gently accelerate the volatilization and diffusion of aromatic molecules through a precise and uniform thermal field without damaging their molecular structure. The operational steps demonstrate a sophisticated application of thermodynamics and fluid dynamics. When the aroma-carrying air containing plant extracts is delivered from the pulverizing chamber to the aroma activation component, the heating program intelligently activates based on the essential oil components and activity index obtained from the material spectral analysis of information collected by the infrared laser sensor 10. The system first employs a "non-contact infrared matrix preheating" strategy. The top and bottom of the aroma activation component are not traditional heating wires or heating plates. The first non-contact infrared matrix 20 and the second non-contact infrared matrix 27 are both matrices composed of dozens of independently temperature-controlled micro far-infrared emitting units. These emitting units have high emissivity at a specific wavelength, which far-infrared rays can be efficiently absorbed by water molecules and most organic matter, converting them into internal energy, but their heating efficiency for the air itself is very low. Based on the material characteristics, the system selectively activates the emission units in different areas and operates in a pulse mode. As the fragrance-carrying air flows, the aroma molecules and water molecules in it are directly and uniformly excited by far-infrared rays, and the temperature rises slowly to the preset optimal volatilization temperature range. Meanwhile, the temperature of the chamber wall itself is significantly lower than that of traditional contact heating, which fundamentally avoids the charring of aroma molecules or the destruction of chemical structure caused by local overheating.

[0034] To prevent activated aroma molecules from condensing and adsorbing due to contact with the relatively cool chamber walls during thermal convection and Brownian motion, which would lead to aroma loss and distortion of component ratios, the system incorporates an innovative pneumatic thermal suspension field technology. A finely crafted annular slit, the third nozzle 25, is designed on the side wall of the cylindrical cavity of the aroma activation component. From this slit, a precisely temperature-controlled inert protective air curtain, nearly identical to the core area temperature, is continuously blown out. Alternatively, conventional air can be used, selected appropriately based on actual conditions, ensuring no adverse effects on human health. This slowly flowing, warm air curtain forms a dynamic, thermally insulating barrier between the hot core airflow and the cold metal wall. It effectively reduces heat conduction from the core aroma airflow to the wall, and its flow direction also generates an inward micro-pressure difference, pushing the active aroma molecules away from the wall and confining them to float and diffuse in the central high-temperature region of the cavity. This maximizes the uniformity of heating and the residence time in the high-temperature zone, thereby achieving full activation.

[0035] Finally, the aroma, perfectly heated by the aroma activation component, enters the gas inlet 36 through a Venturi effect nozzle 16. The contraction-expansion structure of the Venturi effect nozzle 16 not only accelerates the airflow, but the resulting localized low-pressure zone also draws in a small amount of unheated air rich in fresh aroma molecules from the top of the activation chamber for mixing. This allows for precise fine-tuning of temperature and concentration, ensuring a rich and appropriately warm aroma release, completely avoiding the dryness or burnt smell associated with traditional heating methods. Active gas replenishment can also be achieved through a second nozzle 19. The entire heating process is monitored in real-time by a high-precision thermocouple array and an infrared temperature sensor 31 in a closed loop. A PID control algorithm dynamically adjusts the power of the far-infrared emitting unit and the temperature of the protective gas curtain, keeping temperature fluctuations in the core aroma region within ±0.5℃. The system continuously optimizes the heating strategy by learning the optimal thermal excitation curves of different plant materials, ensuring that each aroma release is the most faithful and vivid interpretation of the plant essence. Concentration monitoring is accomplished through a first concentration sensor 21.

[0036] The core mission of the aroma diffusion component is to efficiently, uniformly, and cleanly diffuse the volatile aromatic compounds released after pulverization into the target space. Its operation is a continuous process that integrates fluid dynamics innovation and intelligent environmental perception. When the raw materials in the pulverization chamber are ready, the main control system activates the aroma delivery engine based on the type of raw materials and the desired aroma intensity. This engine abandons the traditional unidirectional fan blades and simple oscillation structure, and adopts a composite air delivery system based on the Coanda effect and active airflow guidance. More importantly, the system is equipped with a multi-dimensional dynamic diffusion module. Above the main Coanda airflow channel, i.e., gas inlet 36, is a ring of independently controllable micro piezoelectric ceramic airflow nozzles, namely the fifth nozzles 32. The central processor dynamically adjusts the opening and closing and spray angle of these fifth nozzles 32 based on real-time environmental sensor data. For example, when activity is detected on the left side of the room, the system can instruct the fifth nozzle 32 array on the left to pulse out a fine airflow at a specific frequency, which will laterally "impact" and deflect the direction of the main coanda airflow, causing it to deflect to the left at a certain angle, thus achieving silent intelligent directional air delivery without mechanical oscillation.

[0037] To ensure a pure and odorless aroma after long-term operation, the system's self-cleaning and duct health management functions are crucial. The gas inlet 36 employs a dual cleaning design combining electrostatic adsorption and mechanical stripping. A washable primary filter at the gas inlet 36 intercepts large dust particles, followed by a metal dust collection screen with a high-voltage electrostatic generator. Fine dust and hair in the air are efficiently ionized and adsorbed as they pass through. The gas dispersing section 28 is equipped with a scraping mesh 29. At preset operating intervals, the system initiates a self-cleaning program. During this time, the scraping mesh 29 slowly moves along the inner wall of the gas dispersing section 28, physically scraping away the very small amount of dust and oily substances adhering to the inner wall and collecting them in the dust collection box. Simultaneously, the third electrostatic adsorption layer 33 automatically de-energizes, and the adsorbed dust falls off under gravity into the designated dust collection box. The location and fixing method of the dust collection box can be reasonably set according to actual conditions. The entire duct can also be sterilized by irradiation with a built-in second ultraviolet sterilization lamp array 34 during specific maintenance cycles. The system algorithm comprehensively records information such as the cumulative operating time of the equipment, environmental dust sensor data, and fan power change rate. Using a machine learning model, it predicts the cleanliness decay curve of the air duct and issues precise maintenance reminders in advance via the user interface. This transforms passive maintenance into predictable proactive intervention, ensuring the air duct remains in a healthy state of low resistance and high cleanliness, guaranteeing the freshness of the blown air from the source. The concentration data collected by the second concentration sensor 38 is used in conjunction with the sensor to control the airflow speed and the mixing ratio of aroma and air, achieving a more suitable aroma concentration control effect. The infrared temperature sensor 31 collects the outlet air temperature, thereby adjusting the heating level within the aroma activation component based on room temperature and target temperature.

[0038] The sensors, controllers, control algorithms, their connection methods, and control logic mentioned above can be reasonably configured based on existing technologies and will not be elaborated further.

[0039] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A plant aroma diffuser, characterized in that, include: The crushing component, equipped with an inlet and an outlet, is used to crush plants, introduce aromatic compounds into the aroma activation component, and complete self-cleaning. The aroma activation component has an aroma-carrying gas inlet (22) connected to the outlet of the pulverizing component. It is used to heat and activate the aromatic compound and make the aromatic compound flow through the heating area under the protection of the gas flow and accelerate the output in the Venturi effect nozzle (16). The aroma dispersing component is connected to the Venturi effect nozzle (16). Several directional adjustable fifth nozzles (32) are provided on one end face. A gas dispersing section (28) for filtering and discharging gas is provided on the periphery. A monitoring module is also provided to detect the position of the human body and control the operation of several fifth nozzles (32) to blow air in the opposite direction to the target side. The activated aromatic compound is blown out from the target side through the gas dispersing section (28) by the reverse force.

2. The plant aroma diffuser according to claim 1, characterized in that: The pulverizing assembly includes a pulverizing chamber, a double-layer cutting section disposed within the pulverizing chamber, a plurality of first nozzles (11) disposed at the top of the pulverizing chamber for spraying cleaning agent, a sterilization unit disposed on the periphery of the pulverizing chamber, a piezoelectric ceramic transducer (14), and a detection module. The double-layer cutting section is provided with at least two relatively rotatable cutting tools (4), and the cutting tools (4) rotate in opposite directions when the detection module detects an abnormality.

3. A plant aroma diffuser according to claim 2, characterized in that: The bottom of the crushing chamber is provided with a filter assembly (1) and a waste recycling section (2). The waste is filtered by the filter assembly (1) and then recycled in the waste recycling section (2).

4. A plant aroma diffuser according to claim 2, characterized in that: The double-layer cutting section is provided in two parts, which are arranged coaxially and spaced apart vertically within the crushing chamber.

5. A plant aroma diffuser according to claim 2, characterized in that: The detection module includes an infrared spectral sensor (7), a 3D structured light module (8), a camera matrix (9), an infrared laser sensor (10), and an acoustic sensor, wherein the acoustic sensor is used to collect sound signals during crushing.

6. A plant aroma diffuser according to any one of claims 1-5, characterized in that: The aroma activation component also includes a housing (17), a conventional gas inlet (18), a non-contact heating component, a dust removal component, and a third nozzle (25). One end of the housing (17) is an aroma-carrying gas inlet (22), and the other end is a Venturi effect nozzle (16). A conventional gas inlet (18) is provided in the middle. A non-contact heating component and a dust removal component for non-contact heating of the aroma-carrying gas are also provided in the middle. The third nozzle (25) is used to form an air curtain to wrap around the aroma-carrying gas flowing in the middle.

7. A plant aroma diffuser according to claim 6, characterized in that: The aroma activation component also includes a first concentration sensor (21) for detecting aroma concentration.

8. A plant aroma diffuser according to claim 1, 2, 3, 4, 5 or 7, characterized in that: A protective air curtain (30) is formed on the outer wall of the gas radiating part (28).

9. A plant aroma diffuser according to claim 8, characterized in that: The aroma dispersing component has a gas inlet (36) connected to the Venturi effect nozzle (16) on the inner ring of the opposite end face of the fifth nozzle (32), and an outlet (37) with an electrostatic dust collection net on the outer ring. A second ultraviolet sterilization lamp array (34) is provided around the aroma dispersing component.

10. A plant aroma diffuser according to claim 9, characterized in that: The aroma dispersing component is also provided with a mechanical stripping layer (35) arranged opposite to the gas inlet (36) to strip impurities from the gas as it passes through.

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