An aromatherapy machine

Abstract

The utility model relates to air purification and smell regulation technical field especially, a kind of aromatherapy machine, including shell back cover, the shell back cover top front side is equipped with air inlet, the shell back cover position on the side of air inlet is equipped with incense outlet. By setting multiple fragrance pop components, and combining fragrance identification PCBA, fragrance identification PCBA, control PCBA and stepper motor, inner drum setting, utilize fragrance identification PCBA and fragrance identification PCBA automatic identification current installation fragrance pop type information, then through control PCBA according to instruction or preset program to send accurate rotation angle instruction to stepper motor, drive inner drum rotation to accurately select and switch fragrance type, satisfy to the actual demand of the diversification of fragrance type, fragrance type independent controllable, incense efficient stable, to realize the independent release between different fragrance type, effectively avoid aroma cross mixing, improve use experience.

Description

Technical Field

[0001] This utility model relates to the field of air purification and odor control technology, and in particular to an aroma diffuser. Background Technology

[0002] As people's living standards continue to improve, automobiles, as an important means of transportation in modern life, are widely used in daily travel. In scenarios involving long-distance driving or multiple passengers, the interior space of a car is relatively enclosed, and air circulation is limited, which easily leads to the accumulation of odors, moisture, and harmful volatile organic compounds, resulting in a decline in air quality. This not only affects the comfort of drivers and passengers but may also have adverse effects on their health. To improve the air quality inside cars, a variety of air purification and odor control products have emerged in the market. Among them, aromatherapy devices are favored by consumers because they combine the functions of purifying the air, enhancing the atmosphere, and soothing emotions.

[0003] Patent CN220046605U discloses an aromatherapy diffuser installation structure. This device uses a self-locking switch to automatically lock and eject the aromatherapy diffuser. When the diffuser is inserted into the receiving slot, the fixing post on the diffuser is pressed into the self-locking switch to form a locking structure. When the diffuser needs to be removed, pressing it again unlocks it and ejects it automatically, achieving convenient assembly and disassembly of the diffuser. Although the device has multiple aromatherapy diffuser cavities, it lacks an independent fragrance diffusion component and effective airflow guidance and control, resulting in slow fragrance diffusion and limited coverage, making it difficult to meet the need for rapid effect. Furthermore, different fragrances are prone to mixing, affecting the purity and distinctiveness of the aroma. In addition, since there is no fragrance selection mechanism, it is impossible to achieve independent release or switching between different fragrances, limiting the user's personalized experience.

[0004] Therefore, there is an urgent need to provide an aroma diffuser with independent control over multiple fragrance types to meet users' actual needs for diverse fragrance types, independent controllable fragrance types, and efficient and stable fragrance diffusion. Utility Model Content

[0005] In order to overcome the shortcomings of existing car fragrance diffusers, such as the lack of independent fragrance control components, inability to switch between different fragrances leading to fragrance mixing, and low fragrance diffusion efficiency, this utility model provides a fragrance diffuser with independent control of multiple fragrance types, meeting users' actual needs for diverse fragrance types, independent control of fragrance types, and efficient and stable fragrance diffusion.

[0006] To address the aforementioned problems, this utility model adopts the following technical solution: an aroma diffuser includes a rear cover, an air inlet on the front top of the rear cover, and a fragrance outlet on the rear cover side of the air inlet. A front cover is fitted onto the top of the rear cover. A lower cover for the fragrance chamber is embedded in the top of the front cover. The right side of the lower cover is hinged to the front cover via a pivot. An upper cover for the fragrance chamber is fitted onto the top of the lower cover. Multiple lower covers for fragrance cartridges are embedded in the bottom of the lower cover. Each lower cover contains a ceramic fragrance emitter. An upper cover for fragrance cartridges is fitted onto the bottom of each lower cover. A fragrance recognition PCBA is installed at the bottom of each upper cover. A fragrance recognition PCBA is installed at the bottom of the front cover. The fragrance recognition PCBA is connected to... Multiple fragrance recognition PCBAs are electrically connected. A blower is installed inside the front cover of the housing, and the blower's air outlet is connected to the fragrance outlet. The blower's air inlet is connected to an air duct bracket, and an air duct cover is provided on the air duct bracket. A roller bracket is provided inside the front cover of the housing. The top of the roller bracket has multiple ventilation ducts corresponding to the three fragrance cartridge lower covers, and the bottom of the roller bracket has multiple first air inlet slots. An inner roller is rotatably arranged inside the roller bracket. The surface of the inner roller has multiple second air inlet slots and multiple ventilation slots. A stepper motor is installed on the left side of the roller bracket, and the output shaft of the stepper motor is connected to the inner roller. A control PCBA is provided at the bottom of the front cover of the housing. The control PCBA is electrically connected to the fragrance recognition PCBA and the stepper motor.

[0007] Optionally, when the output shaft of the stepper motor drives the inner roller to rotate, the ventilation slot is connected to the corresponding ventilation duct, and the ventilation slot is connected to the air inlet of the blower.

[0008] Optionally, multiple magnets are embedded in the top of the lower cover of the fragrance chamber, and an iron sheet is embedded in the top of the lower cover of each fragrance cartridge.

[0009] Optionally, each of the fragrance cartridges has a fragrance cartridge EVA at the bottom of its top cover.

[0010] Optionally, a slider is slidably provided on the top left side of the front cover of the outer shell, and a wedge-shaped limiting block is fixedly connected to one end of the slider near the lower cover of the spice compartment. A limiting groove matching the wedge-shaped limiting block is opened at the corresponding position of the lower cover of the spice compartment. An elastic element connects the slider and the front cover of the outer shell.

[0011] Optionally, a negative ion generator is installed inside the rear cover of the outer shell, and a negative ion emitter is connected to the negative ion generator via a wire. The negative ion emitter is located inside the fragrance outlet.

[0012] Optionally, the control PCBA is provided with a 3-pin wiring harness interface on its side.

[0013] Compared with the prior art, the present invention has the following technical effects: 1. By setting multiple fragrance cartridge components and combining fragrance recognition PCBA, fragrance recognition PCBA, control PCBA, stepper motor, and inner roller, the fragrance recognition PCBA automatically identifies the type information of the currently installed fragrance cartridge. Then, the control PCBA sends a precise rotation angle command to the stepper motor according to the instruction or preset program, driving the inner roller to rotate to accurately select and switch fragrances. This meets the actual needs for diverse fragrance types, independent control of fragrances, and efficient and stable fragrance dispersion, thereby realizing the independent release of different fragrances, effectively avoiding cross-mixing of fragrances, and improving the user experience.

[0014] 2. By setting a locking assembly consisting of a slider, a wedge-shaped limiting block and an elastic element, the wedge-shaped limiting block is engaged in the limiting groove on the lower cover of the spice compartment under the action of the elastic element, forming a mechanical lock to prevent the lower cover of the spice compartment from being accidentally opened due to vibration or accidental contact. Afterwards, it can be unlocked simply by pushing the slider, which is easy to operate and safe and reliable.

[0015] 3. By setting a negative ion generator inside the back cover of the outer shell and electrically connecting it to the negative ion release device near the fragrance outlet, negative oxygen ions can be released while emitting fragrance, effectively adsorbing harmful particulate matter such as dust and bacteria in the air, and realizing the air purification function. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the rear cover and front cover of the outer shell of this utility model.

[0018] Figure 3 This is a three-dimensional structural cross-sectional view of the spice compartment cover, magnet, and rotating shaft of this utility model.

[0019] Figure 4 This is an exploded view of the spice compartment upper cover, spice compartment lower cover, and magnet of this utility model.

[0020] Figure 5 This is a three-dimensional cross-sectional view of the fragrance cartridge cover, iron sheet, and ceramic fragrance generator of this utility model.

[0021] Figure 6 This is an exploded view of the iron sheet, ceramic fragrance generator, and fragrance cartridge cover of this utility model.

[0022] Figure 7 This is a three-dimensional structural cross-sectional view of the negative ion generator, negative ion emitter, and blower of this utility model.

[0023] Figure 8 This is a three-dimensional structural cross-sectional view of the roller support, inner roller, and stepper motor of this utility model.

[0024] Figure 9 This is an exploded view of the blower, duct support, and inner roller of this utility model.

[0025] Figure 10 This is a three-dimensional cross-sectional view of the front cover, air duct support, and control PCBA of this utility model.

[0026] Explanation of reference numerals in the attached diagram: 1: Rear cover of outer shell; 101: Air inlet; 102: Fragrance outlet; 2: Front cover of outer shell; 3: Upper cover of fragrance chamber; 4: Lower cover of fragrance chamber; 5: Magnet; 6: Rotating shaft; 7: Slider; 8: Wedge-shaped limiting block; 801: Limiting groove; 9: Elastic element; 10: Lower cover of fragrance cartridge; 11: Iron sheet; 12: Ceramic fragrance emitter; 13: Upper cover of fragrance cartridge; 14: Fragrance recognition PCBA; 1401: Fragrance recognition. PCBA, 15: Fragrance cartridge EVA, 16: Negative ion generator, 17: Negative ion emitter, 18: Blower, 19: Air duct bracket, 1901: Air duct cover, 20: Roller bracket, 2001: Ventilation duct, 2002: First air inlet slot, 21: Inner roller, 2101: Second air inlet slot, 2102: Ventilation slot, 22: Stepper motor, 23: Control PCBA, 24: 3PIN wire harness interface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: Please refer to Figures 1-10An aroma diffuser includes a rear cover 1 with an air inlet 101 on the front top of the rear cover 1 for introducing external air. An aroma outlet 102 is located on the side of the rear cover 1 near the air inlet 101 to expel treated scented air into the environment. A front cover 2 is snapped onto the top of the rear cover 1. A lower cover 4 for the fragrance chamber is embedded in the top of the front cover 2. The right side of the lower cover 4 is hinged to the front cover 2 via a pivot 6 for easy opening and replacement of the fragrance. Three magnets 5 are embedded in the top of the lower cover 4, evenly spaced horizontally. A top cover 3 for the fragrance chamber is snapped onto the top of the lower cover 4. The bottom of the lower cover 4 is embedded... The device features three fragrance cartridge bottom covers 10 evenly spaced horizontally. Each fragrance cartridge bottom cover 10 has an embedded iron plate 11 at its top. The fragrance cartridge is quickly locked and removed by a magnet 5 attracting the iron plate 11, facilitating fragrance replacement. Each fragrance cartridge bottom cover 10 contains a ceramic fragrance emitter 12, a porous material with high adsorption capacity that adsorbs and slowly releases fragrance substances, achieving stable fragrance diffusion under airflow. Each fragrance cartridge bottom cover 10 has a fragrance cartridge top cover 13 that engages with it. Each fragrance cartridge top cover 13 has a fragrance type recognition PCBA 14 installed at its bottom, which stores the fragrance type corresponding to the fragrance cartridge. The fragrance information, such as fragrance name and concentration, is stored in the front cover 2 of the outer shell. A fragrance recognition PCBA 1401 is installed at the bottom of the front cover 2. The fragrance recognition PCBA 1401 is electrically connected to three fragrance recognition PCBAs 14. The fragrance recognition PCBA 1401 is responsible for reading the information provided by the fragrance recognition PCBAs 14 on each fragrance cartridge. A blower 18 is installed inside the front cover 2. The air outlet of the blower 18 is connected to the fragrance outlet 102. An air duct bracket 19 is connected to the air inlet of the blower 18. An air duct cover 1901 is installed on the air duct bracket 19. A roller bracket 20 is installed inside the front cover 2. The top of the roller bracket 20 has an opening that connects to the bottom cover of the three fragrance cartridges. The roller support 20 has three corresponding ventilation ducts 2001, and two first air inlet slots 2002 arranged symmetrically at the bottom to guide external air into the roller support 20. Each fragrance cartridge cover 13 has a fragrance cartridge EVA 15 at its bottom, made of elastic material, to ensure a tight seal between the fragrance cartridge and the ventilation ducts 2001 on the roller support 20, preventing fragrance leakage or the entry of external impurities. An inner roller 21 is rotatably mounted inside the roller support 20. The surface of the inner roller 21 has two second air inlet slots 2101 arranged symmetrically at the top and bottom, and two parallel ventilation slots 2102. External air enters through the air inlet 101.The air enters the inner roller 21 through the first air inlet slot 2002 and the second air inlet slot 2101. A stepper motor 22 is installed on the left side of the roller bracket 20. The output shaft of the stepper motor 22 is connected to the inner roller 21. When the output shaft of the stepper motor 22 drives the inner roller 21 to rotate, the inner roller 21 is rotated to 90 degrees, 180 degrees, 270 degrees, etc. by controlling the stepper motor 22, thereby switching the air inlet slot 2102 to the air duct 2001 in three different positions, so that the air inlet slot 2102 is connected to the corresponding air duct 2001, realizing independent fragrance control for three fragrance types. A control PCBA is provided at the bottom of the front cover 2 of the outer shell. 23. The control PCBA 23 is electrically connected to the fragrance recognition PCBA 1401 and the stepper motor 22, realizing integrated control of fragrance recognition and fragrance switching functions. The control PCBA 23 can automatically control the fragrance recognition PCBA 1401 to read fragrance cartridge information according to user operation commands or preset programs, and drive the stepper motor 22 to rotate to a specified angle, thereby achieving precise alignment and independent fragrance diffusion of the corresponding fragrance. The control PCBA 23 has a 3-pin wiring harness interface 24 on its side for external power supply or communication with other control systems. This interface supports stable power input and data transmission, ensuring the stability and expandability of the device operation.

[0029] When the aroma diffuser is running, the user can select the desired fragrance through the vehicle system. At this time, the fragrance recognition PCBA1401 reads the fragrance recognition information from all currently installed fragrance cartridges, confirms the name, status, and availability of each fragrance, and controls PCBA23 to send a rotation command to the stepper motor 22 according to the user's selection. This drives the inner roller 21 to rotate to a set angle, aligning the ventilation slot 2102 with the ventilation duct 2001 below the target fragrance cartridge. Simultaneously, external air enters the device through the air inlet 101, passes through the first air inlet slot 2002 and the second air inlet slot 2101, and enters the inner roller 21. The air then flows through the ventilation slot 2102 into the corresponding ventilation duct 2001 and into the designated fragrance cartridge. The airflow passes through the ceramic fragrance generator 12, carrying fragrance molecules into the air inlet of the blower 18. The blower 18 delivers the fragrant air through the air outlet to the fragrance outlet 102, ultimately diffusing it into the vehicle's interior environment.

[0030] Example 2: Based on Example 1, please refer to... Figure 3 and Figure 4 The front cover 2 of the outer shell is slidably provided with a slider 7 on the top left side. A wedge-shaped limiting block 8 is fixed to one end of the slider 7 near the lower cover 4 of the spice compartment. The lower cover 4 of the spice compartment is provided with a limiting groove 801 that matches the wedge-shaped limiting block 8 at the corresponding position. An elastic element 9 is connected between the slider 7 and the front cover 2 of the outer shell.

[0031] In the initial state, under the action of the elastic element 9, the wedge-shaped limiting block 8 is engaged in the limiting groove 801 on the fragrance compartment lower cover 4, forming a mechanical lock, thereby limiting and fixing the fragrance compartment lower cover 4 and preventing it from being accidentally opened due to vibration or accidental contact. When the user needs to open the fragrance compartment lower cover 4, he only needs to push the slider 7 outward to overcome the elastic force of the elastic element 9, so that the wedge-shaped limiting block 8 can be disengaged from the limiting groove 801, and the locking state can be released. At this time, the fragrance compartment lower cover 4 can be opened by rotating upward through the pivot 6, which is convenient for replacing the fragrance cartridge.

[0032] Please see Figure 5 The back cover 1 of the outer shell is equipped with a negative ion generator 16. The negative ion generator 16 is an electronic device that ionizes oxygen molecules in the air through a high voltage electric field or corona discharge to generate a large number of negative oxygen ions. The negative ion generator 16 is connected to a negative ion release device 17 through a wire. The negative ion release device 17 is set in the fragrance outlet 102 and is used to release the generated negative ions into the external environment along with the fragrance air.

[0033] Under the action of the blower 18, the air with fragrance after being treated by the fragrance bomb is discharged from the fragrance outlet 102. At the same time, the negative ion emitter 17 also releases the generated negative ions into the air. These negative ions can adsorb harmful particles such as dust, bacteria, and viruses in the air and cause them to settle, thereby achieving the air purification effect and further improving the user experience.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An aroma diffuser, comprising a rear cover (1) of an outer shell, wherein an air inlet (101) is provided on the front side of the top of the rear cover (1), and an aroma outlet (102) is provided on the side of the air inlet (101) at the position of the rear cover (1). A front cover (2) of the outer shell is engaged with the top of the rear cover (1). A fragrance chamber lower cover (4) is embedded in the top of the front cover (2). The right side of the fragrance chamber lower cover (4) is hinged to the front cover (2) of the outer shell via a pivot (6). A fragrance chamber upper cover (3) of the fragrance chamber lower cover (4) is engaged with the top of the fragrance chamber lower cover (4). Multiple fragrance cartridge lower covers (10) are embedded in the bottom of the fragrance chamber lower cover (4). Each fragrance cartridge lower cover (10) contains a ceramic fragrance emitter (12). A fragrance cartridge upper cover (13) of each fragrance cartridge lower cover (10) is engaged with the bottom of the fragrance cartridge lower cover (10). The aroma diffuser is characterized by: Each fragrance cartridge has a fragrance recognition PCBA (14) installed at the bottom of its top cover (13), and a fragrance recognition PCBA (1401) installed at the bottom of its front cover (2). The fragrance recognition PCBA (1401) is electrically connected to multiple fragrance recognition PCBAs (14). A blower (18) is installed inside the front cover (2). The air outlet of the blower (18) is connected to the fragrance outlet (102). The air inlet of the blower (18) is connected to a duct support (19). A duct cover (1901) is provided on the duct support (19). A roller support (20) is provided inside the front cover (2). The top of the roller support (20) has an opening for connecting with the fragrance cartridge. The pop-up cover (10) has multiple ventilation ducts (2001) corresponding to it, and the bottom of the roller bracket (20) has multiple first air inlet slots (2002). The roller bracket (20) has an inner roller (21) rotatably installed inside. The surface of the inner roller (21) has multiple second air inlet slots (2101) and multiple ventilation slots (2102). A stepper motor (22) is installed on the left side of the roller bracket (20). The output shaft of the stepper motor (22) is connected to the inner roller (21). The bottom of the front cover (2) of the outer shell has a control PCBA (23). The control PCBA (23) is electrically connected to the fragrance recognition PCBA (1401) and the stepper motor (22).

2. The aroma diffuser according to claim 1, characterized in that: When the output shaft of the stepper motor (22) drives the inner roller (21) to rotate, the ventilation groove (2102) is connected to the corresponding ventilation duct (2001), and the ventilation groove (2102) is connected to the air inlet of the blower (18).

3. The aroma diffuser according to claim 2, characterized in that: The top of the fragrance chamber cover (4) is provided with multiple magnets (5), and the top of each fragrance cartridge cover (10) is provided with an iron sheet (11).

4. An aroma diffuser according to claim 3, characterized in that: Each of the fragrance cartridges has a fragrance cartridge EVA (15) at the bottom of its top cover (13).

5. An aroma diffuser according to claim 4, characterized in that: A slider (7) is slidably provided on the top left side of the front cover (2) of the outer shell. A wedge-shaped limiting block (8) is fixed to one end of the slider (7) near the lower cover (4) of the spice chamber. A limiting groove (801) matching the wedge-shaped limiting block (8) is opened at the corresponding position of the lower cover (4) of the spice chamber. An elastic element (9) is connected between the slider (7) and the front cover (2) of the outer shell.

6. An aroma diffuser according to claim 5, characterized in that: The back cover (1) of the outer shell is equipped with a negative ion generator (16), and a negative ion emitter (17) is connected to the negative ion generator (16) by a wire. The negative ion emitter (17) is located inside the fragrance outlet (102).

7. An aroma diffuser according to claim 6, characterized in that: The control PCBA (23) has a 3PIN wire harness interface (24) on its side.

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