Aroma diffuser

Abstract

The utility model discloses an aromatherapy machine which comprises an upper shell, a lower shell, an upper cover and a lower cover, and the upper shell is provided with an air outlet and a baffle; the lower shell is connected with the upper shell, the lower shell is provided with an air inlet duct and an air outlet duct, the air outlet duct is arranged corresponding to the air outlet, the lower shell is provided with a surrounding plate, the surrounding plate is located on the periphery of the air outlet duct, and the surrounding plate is provided with a communication port; the fan is located in the lower shell, and the fan is used for sucking external air from the air inlet duct and exhausting the external air from the air outlet duct; a communication opening is formed in the upper shell, a fragrance cavity is formed between the upper shell and the lower shell, aromatherapy cotton is arranged in the fragrance cavity and used for adsorbing essential oil, and the fragrance cavity can communicate with the air outlet channel through the communication opening; the baffle can move relative to the surrounding plate so as to close or open the communication opening. A user can choose to lock or disperse the incense according to use requirements, and excessive loss of consumables is avoided.

Description

Technical Field

[0001] This utility model relates to the field of aromatherapy products technology, and in particular to an aromatherapy diffuser. Background Technology

[0002] From the perspective of the overall size of the olfactory market, my country's perfume and fragrance industry is expected to maintain a relatively high growth rate, and the demand for portable aroma diffusers is also increasing. However, the portable aroma diffusers currently on the market cannot actively turn the fragrance diffusion system on and off during daily use, which leads to the waste of fragrance pads and increases the frequency of users replacing consumables, resulting in a significant reduction in the experience. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an aroma diffuser that solves the problem of waste of consumables caused by the inability of existing aroma diffusers to actively select whether to diffuse or lock in fragrance.

[0004] The technical solution of this utility model is: an aroma diffuser, comprising:

[0005] The upper housing is provided with an air outlet and a baffle.

[0006] The lower housing is connected to the upper housing. The lower housing is provided with an air inlet duct and an air outlet duct. The air outlet duct is correspondingly provided with an air outlet. The lower housing is provided with a surrounding plate located on the outer periphery of the air outlet duct. The surrounding plate is provided with a connecting opening.

[0007] A fan, located inside the lower housing, is used to draw in outside air from the air inlet and discharge it from the air outlet.

[0008] A fragrance chamber is provided between the upper shell and the lower shell, and a fragrance cotton is provided in the fragrance chamber to absorb essential oils. The fragrance chamber can be connected to the air outlet through the connecting port.

[0009] The baffle is movable relative to the enclosure to close or open the connection.

[0010] Furthermore, the upper housing is rotatably connected to the lower housing, and the rotation of the upper housing causes the baffle to close or open the communication port.

[0011] Furthermore, the enclosure is provided with a plurality of communication openings at intervals, and the baffle is provided with a plurality of blocking parts at intervals. The blocking parts are used to close the communication openings, and the distance between two adjacent blocking parts is the same as the distance between two adjacent communication openings.

[0012] Furthermore, the lower housing has an assembly boss on its top, the upper housing is rotatably connected to the assembly boss, the boss has a positioning notch, and the upper housing has a foolproof part located inside the positioning notch.

[0013] Furthermore, the lower housing has an assembly boss at its top, and the upper housing is rotatably connected to the assembly boss. The assembly boss has a first positioning part and a second positioning part, and the upper housing has a limiting part. The limiting part can be connected to one of the first positioning part and the second positioning part to achieve positioning. When the limiting part is connected to the first positioning part, the baffle opens the communication port. When the limiting part is connected to the second positioning part, the baffle closes the communication port.

[0014] Furthermore, the first positioning part and the second positioning part are protruding ribs, and the limiting part is a groove; or, the first positioning part and the second positioning part are grooves, and the limiting part is a protruding rib.

[0015] Furthermore, the aroma diffuser also includes an air duct cover, which is rotatably connected to the lower housing and detachably connected to the upper housing. Rotation of the upper housing can drive the air duct cover to rotate, thereby closing the air outlet duct.

[0016] Furthermore, the duct cover is provided with a third positioning part, and the lower housing is provided with a fourth positioning part. When the duct cover rotates and drives the third positioning part to align with the fourth positioning part, the duct cover closes the air outlet duct.

[0017] Furthermore, one of the third positioning part and the fourth positioning part is a groove, and the other is a rib.

[0018] Furthermore, the upper housing is provided with a first snap-fit ​​portion, and the air duct cover is provided with a second snap-fit ​​portion, and the first snap-fit ​​portion and the second snap-fit ​​portion snap-fit ​​each other.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] The aroma diffuser of this invention controls whether the fragrance chamber is connected to the air outlet by moving the baffle relative to the surrounding plate to close or open the connecting port. Users can choose to lock in the fragrance or diffuse the fragrance according to their needs, thus avoiding excessive consumption of consumables. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the aroma diffuser of this utility model.

[0022] Figure 2 This is an exploded view of the aroma diffuser of this utility model.

[0023] Figure 3 This is a schematic diagram of the bottom of the aroma diffuser of this utility model.

[0024] Figure 4 This is a schematic diagram of the assembly of the lower shell, the air duct cover, and the aromatherapy cotton of this utility model.

[0025] Figure 5 This is a schematic diagram of the inner surface of the upper shell of this utility model.

[0026] Figure 6 This is a schematic diagram of the structure of the air duct cover of this utility model.

[0027] Figure 7 This is a schematic diagram of the structure of the inner surface of the first shell of the lower shell of this utility model.

[0028] Figure 8 This is a schematic diagram showing the connection between the air duct cover and the lower shell of this utility model.

[0029] Figure 9 This is a schematic diagram of the operation of the aroma diffuser of this utility model.

[0030] Figure 10 This is a schematic diagram of the aromatherapy diffuser of this utility model in its fragrance-locking state.

[0031] Figure 11 This is a schematic diagram of the aroma diffuser of this utility model in its fragrance dispersal state.

[0032] Upper housing 1, air outlet 11, baffle 12, shielding part 121, foolproof part 13, limiting part 14, indicator mark 15, first snap-fit ​​part 16, lower housing 2, air inlet duct 21, air outlet duct 22, surrounding plate 23, connecting port 231, mounting boss 24, positioning notch 241, first positioning part 242, second positioning part 243, shaft cylinder 25, fourth positioning part 251, through groove 26, first housing 27, second housing 28, base 29, first positioning mark 201, second positioning mark 202, locking mark 203, fan 3, fragrance chamber 4, aromatherapy cotton 5, air duct cover 6, third positioning part 61, hook part 62, second snap-fit ​​part 63, cover plate 64. Detailed Implementation

[0033] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0035] Currently available portable aroma diffusers cannot actively turn the fragrance diffusion system on and off during daily use, resulting in wasted fragrance pads, increased frequency of replacement, and a significantly diminished user experience. To address these issues, this application provides an aroma diffuser that solves the problem of existing diffusers' inability to actively lock in fragrance.

[0036] In some embodiments, such as Figures 1-5 As shown, an aroma diffuser is provided, comprising:

[0037] Upper housing 1, the upper housing 1 is provided with an air outlet 11, the upper housing 1 is provided with a baffle 12;

[0038] The lower housing 2 is connected to the upper housing 1. The lower housing 2 is provided with an air inlet duct 21 and an air outlet duct 22. The air outlet duct 22 is correspondingly provided with the air outlet 11. The lower housing 2 is provided with a surrounding plate 23. The surrounding plate 23 is located on the outer periphery of the air outlet duct 22. The surrounding plate 23 is provided with a connecting opening 231.

[0039] Fan 3, located inside the lower housing 2, is used to draw in outside air from the air inlet duct 21 and discharge it from the air outlet duct 22;

[0040] A fragrance chamber 4 is provided between the upper housing 1 and the lower housing 2. A fragrance cotton 5 is provided in the fragrance chamber 4. The fragrance cotton 5 is used to absorb essential oils. The fragrance chamber 4 can be connected to the air outlet 22 through the connecting port 231.

[0041] The baffle 12 is movable relative to the enclosure 23 to close or open the communication port 231.

[0042] like Figures 9-11 As shown, the user controls whether the fragrance chamber 4 is connected to the air outlet 22 by operating the baffle 12 to close or open the connecting port 231, thus controlling whether the aroma diffuser diffuses or locks in the fragrance. When the baffle 12 does not cover the connecting port 231, the fan 3 draws in outside air from the air inlet 21 and discharges it from the air outlet 22. Under the action of negative pressure, the essential oil in the aroma diffuser cotton 5 evaporates and enters the air outlet 22 through the connecting port 231, and finally exits through the air outlet 11. When the aroma diffuser does not need to diffuse the fragrance, the baffle 12 is operated to cover and close the connecting port 231, thereby isolating the fragrance chamber 4 from the air outlet 22, locking in the fragrance, and preventing excessive loss caused by continuous evaporation of essential oil.

[0043] In some embodiments, such as Figures 9-11 As shown, the upper shell 1 and the lower shell 2 are rotatably connected. The rotation of the upper shell 1 causes the baffle 12 to close or open the connecting port 231. By rotating the upper shell 1 and the lower shell 2, the baffle 12 is integrally formed with the upper shell 1. The rotation of the upper shell 1 causes the baffle 12 to move, and the baffle 12 rotates to close and block the connecting port 231, isolating the fragrance chamber 4 from the air outlet 22 to lock in the fragrance. Alternatively, the baffle 12 rotates to open the connecting port 231, connecting the fragrance chamber 4 to the air outlet 22 to diffuse the fragrance. The structure is simple and the operation is convenient.

[0044] In some embodiments, the baffle 12 is movably connected to the upper housing 1. The upper housing 1 is provided with a sliding groove, and the baffle 12 can slide in the sliding groove. By sliding the baffle 12, the communication port 231 can be closed or opened. The baffle 12 can slide to the left to close the communication port 231, or slide to the right to open the communication port 231. The fragrance can be locked or dispersed by sliding the baffle 12, which is convenient to operate.

[0045] In some embodiments, the baffle 12 is movably connected to the upper housing 1 and can move towards the lower housing 2. The user can press the baffle 12 to close the communication port 231 and lock the fragrance. When the fragrance needs to be released, the baffle 12 is lifted and locked so that the fragrance chamber 4 is connected to the air outlet 22.

[0046] In some embodiments, such as Figures 4-5As shown, the enclosure 23 is provided with a plurality of connecting openings 231 at intervals, and the baffle 12 is provided with a plurality of blocking parts 121 at intervals. The blocking parts 121 are used to close the connecting openings 231, and the distance between two adjacent blocking parts 121 is the same as the distance between two adjacent connecting openings 231. By providing a plurality of connecting openings 231, the essential oils volatilized in the fragrance chamber 4 can enter the air outlet duct 22 through the plurality of connecting openings 231, thereby accelerating the diffusion of fragrance.

[0047] In some embodiments, such as Figures 4-5 As shown, the enclosure 23 is arranged to surround the air outlet 22, and multiple serrations are distributed at intervals along the circumference of the enclosure 23. A connecting opening 231 is formed between two adjacent serrations. The baffle 12 is arranged with multiple blocking parts 121 around it. The multiple blocking parts 121 are serrated and can complement the connecting opening 231 to close the connecting opening 231. When the baffle 12 rotates, the multiple blocking parts 121 can simultaneously block the multiple connecting openings 231 to lock the fragrance. When the baffle 12 rotates to the point where the multiple blocking parts 121 are aligned with the multiple serrations, the multiple connecting openings 231 open, so that the fragrance chamber 4 is connected to the air outlet 22 to achieve fragrance dissipation.

[0048] In some embodiments, such as Figures 4-5 As shown, the lower housing 2 has a mounting boss 24 on its top, and the upper housing 1 is rotatably connected to the mounting boss 24. The boss has a positioning notch 241, and the upper housing 1 has a foolproof part 13 located within the positioning notch 241. The positioning notch 241 and the foolproof part 13 are provided to allow the user to identify the assembly direction of the upper housing 1 and the lower housing 2, preventing the user from assembling them backwards.

[0049] In some embodiments, the upper housing 1 is rotatably connected to the mounting boss 24. This can be achieved by the inner wall of the upper housing 1 contacting and engaging with the outer wall of the mounting boss 24. The width of the positioning notch 241 gradually decreases along the circumferential direction. This allows the anti-misalignment part 13 to be inserted into the positioning notch 241. As the upper housing 1 rotates, it drives the anti-misalignment part 13 to rotate. Since the width of the positioning notch 241 gradually decreases, the anti-misalignment part 13 becomes increasingly tightly contacted with the wall surface at the positioning notch 241, thereby achieving the fixation of the upper housing 1 and the lower housing 2.

[0050] In some embodiments, the wall thickness on one side of the mounting boss 24 is thinner than the wall thickness on the other sides to form a positioning notch 241.

[0051] In some embodiments, such as Figures 4-5As shown, the lower housing 2 has a mounting boss 24 on its top, and the upper housing 1 is rotatably connected to the mounting boss 24. The mounting boss 24 has a first positioning part 242 and a second positioning part 243. The upper housing 1 has a limiting part 14, which can be connected to one of the first positioning part 242 and the second positioning part 243 to achieve positioning. When the limiting part 14 is connected to the first positioning part 242, the baffle 12 opens the communication port 231. When the limiting part 14 is connected to the second positioning part 243, the baffle 12 closes the communication port 231. By setting the first positioning part 242 and the second positioning part 243 to cooperate with the limiting part 14 respectively, the fragrance dispersing position or the fragrance locking position is maintained.

[0052] In some embodiments, such as Figures 4-5 As shown, the first positioning part 242 and the second positioning part 243 are protruding ribs, and the limiting part 14 is a groove. The protruding ribs and the groove are interlocked to lock the fragrance dispersing position or the fragrance locking position.

[0053] In some embodiments, the first positioning part 242 and the second positioning part 243 are grooves, and the limiting part 14 is a rib.

[0054] In some embodiments, such as Figure 4 As shown, the air outlet 22 is located at the center of the mounting boss 24, and the surrounding plate 23 is arranged around the air outlet 22. The mounting boss 24 has an annular groove along the circumference of the surrounding plate 23, and the aromatherapy cotton 5 is placed in the annular groove. With this arrangement, the essential oil volatilized in the aromatherapy cotton 5 can enter the air outlet 22 from the circumference, thereby improving the fragrance diffusion efficiency.

[0055] In some embodiments, such as Figure 1 and Figure 4 As shown, the upper housing 1 is provided with an indicator mark 15, and the lower housing 2 is provided with a first positioning mark 201 and a second positioning mark 202. When the first positioning part 242 is connected to the limiting part 14, the indicator mark 15 is aligned with the first positioning mark 201. When the second positioning part 243 is connected to the limiting part 14, the indicator mark 15 is aligned with the second positioning mark 202. The first positioning mark 201 and the second positioning mark 202 can be positioning points, positioning stickers, positioning patterns, or positioning text. For example, the lower housing 2 is marked with the words "fragrance diffuser" corresponding to the position of the first positioning part 242, and the position of the second positioning part 243 is marked with the words "fragrance locker". When the indicator mark 15 is aligned with the first positioning mark 201 or the second positioning mark 202, the current state can be identified to facilitate user identification and selection.

[0056] In some embodiments, such as Figures 6-8As shown, the aroma diffuser also includes an air duct cover 6, which is rotatably connected to the lower housing 2. The upper housing 1 is detachably connected to the air duct cover 6. Rotation of the upper housing 1 can drive the air duct cover 6 to rotate, thereby closing the air outlet duct 22. By setting the air duct cover 6, the air outlet duct 22 can be sealed. When the essential oil in the aromatherapy cotton 5 evaporates and needs to be added, sealing the air outlet duct 22 can prevent essential oil from entering the aroma diffuser through the air outlet duct 22, thus avoiding damage to the internal electronic components of the aroma diffuser.

[0057] In some embodiments, such as Figures 6-8 As shown, the duct cover 6 is provided with a third positioning part 61, and the lower housing 2 is provided with a fourth positioning part 251. When the duct cover 6 rotates, causing the third positioning part 61 to connect with the fourth positioning part 251, the duct cover 6 closes the air outlet duct 22. The position of the duct cover 6 is locked by providing the third positioning part 61 and the fourth positioning part 251, thereby locking the closed position of the air outlet duct 22.

[0058] In some embodiments, such as Figures 6-8 As shown, one of the third positioning part 61 and the fourth positioning part 251 is a groove, and the other is a rib. The groove and the rib are interlocked to keep the air duct cover 6 in the closed position of the air outlet 22, making it difficult to move. Here, the groove and the rib are interlocked, but the rib can be disengaged from the groove under a certain external force, without affecting the normal opening of the air outlet 22.

[0059] In some embodiments, such as Figures 6-8 As shown, the air duct cover 6 is provided with a hook portion 62, and the lower housing 2 is provided with a shaft cylinder 25 at the air outlet 22. The hook portion 62 can be engaged with the shaft cylinder 25 and can rotate relative to the shaft cylinder 25. The third positioning portion 61 is a groove provided on the hook portion 62, and the fourth positioning portion 251 is a protruding rib provided on the shaft cylinder 25. The hook portion 62 is provided to facilitate the assembly of the air duct cover 6 and the lower housing 2. The rotation of the air duct cover 6 drives the hook portion 62 to rotate. When the groove on the hook portion 62 rotates to engage with the protruding rib on the shaft cylinder 25, the position of the air duct cover 6 is locked, and the air duct cover 6 closes the air outlet 22. When the air duct cover 6 closes the air outlet 22, the upper housing 1 can be opened to add essential oil.

[0060] In some embodiments, such as Figures 6-8 As shown, the lower housing 2 radiates outwards from the position of the shaft cylinder 25 as a circumferential direction, forming multiple through slots 26 that serve as air outlet ducts 22. These through slots 26 are not interconnected. The air duct cover plate 6 is provided with multiple cover plates 64 corresponding to the multiple through slots 26, with open spaces between adjacent cover plates 64. Figures 10-11As shown, during the rotation of the duct cover 6, multiple cover plates 64 can cover multiple through slots 26 to achieve the closure of the air outlet 22 by the duct cover 6; when the cutout on the duct cover 6 is aligned with the multiple through slots 26, the air outlet 22 is opened.

[0061] In some embodiments, such as Figure 1 and Figure 4 As shown, the upper housing 1 is provided with an indicator mark 15, and the lower housing 2 is provided with a locking mark 203. When the third positioning part 61 is connected to the fourth positioning part 251, the indicator mark 15 and the locking mark 203 are aligned. The locking mark 203 can be a positioning point, a positioning sticker, a positioning pattern, or positioning text. For example, the lower housing 2 is marked with the words "lock air" at the position corresponding to the fourth positioning part 251. When the indicator mark 15 and the locking mark 203 are aligned, the air outlet duct 22 is closed, making it convenient for the user to identify and select. When the upper housing 1 and the lower housing 2 are initially assembled, the indicator mark 15 and the locking mark 203 are aligned.

[0062] In some embodiments, the locking mark 203 and the second positioning mark 202 are located at the same position. When the air outlet 22 is closed, the baffle 12 isolates the fragrance chamber 4 from the air outlet 22. That is, the second positioning mark 202 and the locking mark 203 are the same mark.

[0063] In some embodiments, such as Figure 4 and Figure 5 As shown, the upper housing 1 is provided with a first snap-fit ​​part 16, and the air duct cover 6 is provided with a second snap-fit ​​part 63. The first snap-fit ​​part 16 and the second snap-fit ​​part 63 are snapped together to enable the upper housing 1 to rotate, thereby driving the air duct cover 6 to rotate.

[0064] In some embodiments, such as Figure 4 and Figure 5 As shown, the first snap-fit ​​part 16 is a slot, and the second snap-fit ​​part 63 is an insert plate. The insert plate can be inserted into the slot to achieve the snap-fit ​​between the upper housing 1 and the air duct cover 6, so that the upper housing 1 rotates and drives the air duct cover 6 to rotate.

[0065] In some embodiments, such as Figure 2 , Figure 3 and Figure 10 As shown, the lower housing 2 includes a first housing 27, a second housing 28, and a base 29. The first housing 27 and the second housing 28 are assembled and connected. The first housing 27 is provided with an air outlet 22, and the second housing 28 is provided with an air inlet 21. The fan 3 is located in the space enclosed by the first housing 27 and the second housing 28. The base 29 is detachably connected to the second housing 28. The base 29 can raise the second housing 28 to prevent the air inlet 21 from being blocked.

[0066] In some embodiments, such as Figure 2As shown, a control switch is provided on the outer surface of the lower housing 2, and a battery assembly and a control circuit board are provided inside the lower housing 2. The control switch and the battery assembly are electrically connected to the control circuit board, and the fan 3 is electrically connected to the control circuit board. The user can select the start / stop and air volume of the fan 3 through the control switch.

[0067] In the aroma diffuser of this application, when the upper housing 1 and lower housing 2 are in their initial assembly position, the indicator mark 15 is aligned with the locking mark 203, and the air outlet 22 is closed by the air outlet cover 6. When the upper housing 1 is rotated, the indicator mark 15 moves with the upper housing 1, and the upper housing 1 simultaneously drives the air outlet cover 6 to rotate, thereby opening the air outlet 22. When the upper housing 1 moves to the point where the indicator mark 15 is aligned with the first positioning mark 201, the air outlet cover 6 opens the air outlet 22, and at the same time, the baffle 12 opens the connecting port 231, realizing the connection between the fragrance chamber 4 and the air outlet 22. When the indicator mark 15 is aligned with the second positioning mark 202, the baffle 12 closes the connecting port 231, isolating the fragrance chamber 4 from the air outlet 22. The aroma diffuser of this application can accurately lock in and diffuse fragrance. At the same time, when adding essential oil by opening the upper housing 1, the air outlet 22 can be closed to prevent essential oil from entering the aroma diffuser from the air outlet 22 and causing damage to the internal electronic components of the aroma diffuser.

[0068] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An aroma diffuser, characterized in that, include: The upper housing is provided with an air outlet and a baffle. The lower housing is connected to the upper housing. The lower housing is provided with an air inlet duct and an air outlet duct. The air outlet duct is correspondingly provided with an air outlet. The lower housing is provided with a surrounding plate located on the outer periphery of the air outlet duct. The surrounding plate is provided with a connecting opening. A fan, located inside the lower housing, is used to draw in outside air from the air inlet and discharge it from the air outlet. A fragrance chamber is provided between the upper shell and the lower shell, and a fragrance cotton is provided in the fragrance chamber to absorb essential oils. The fragrance chamber can be connected to the air outlet through the connecting port. The baffle is movable relative to the enclosure to close or open the connection.

2. The aroma diffuser according to claim 1, characterized in that, The upper housing is rotatably connected to the lower housing, and the rotation of the upper housing causes the baffle to close or open the communication port.

3. The aroma diffuser according to claim 2, characterized in that, The enclosure is provided with a plurality of communication openings at intervals, and the baffle is provided with a plurality of blocking parts at intervals. The blocking parts are used to close the communication openings, and the distance between two adjacent blocking parts is the same as the distance between two adjacent communication openings.

4. The aroma diffuser according to claim 2, characterized in that, The lower housing has an assembly boss on its top, and the upper housing is rotatably connected to the assembly boss. The boss has a positioning notch, and the upper housing has a foolproof part located inside the positioning notch.

5. The aroma diffuser according to claim 2, characterized in that, The lower housing has an assembly boss on its top, and the upper housing is rotatably connected to the assembly boss. The assembly boss has a first positioning part and a second positioning part, and the upper housing has a limiting part. The limiting part can be connected to one of the first positioning part and the second positioning part to achieve positioning. When the limiting part is connected to the first positioning part, the baffle opens the communication port. When the limiting part is connected to the second positioning part, the baffle closes the communication port.

6. The aroma diffuser according to claim 5, characterized in that, The first positioning part and the second positioning part are protruding ribs, and the limiting part is a groove; or, the first positioning part and the second positioning part are grooves, and the limiting part is a protruding rib.

7. The aroma diffuser according to claim 2, characterized in that, It also includes a duct cover plate, which is rotatably connected to the lower housing and detachably connected to the upper housing. Rotation of the upper housing can drive the duct cover plate to rotate, so that the duct cover plate closes the air outlet duct.

8. The aroma diffuser according to claim 7, characterized in that, The duct cover is provided with a third positioning part, and the lower housing is provided with a fourth positioning part. When the duct cover rotates and drives the third positioning part to align with the fourth positioning part, the duct cover closes the air outlet duct.

9. The aroma diffuser according to claim 8, characterized in that, Of the third positioning part and the fourth positioning part, one is a groove and the other is a rib.

10. The aroma diffuser according to claim 7, characterized in that, The upper housing is provided with a first snap-fit ​​part, and the air duct cover is provided with a second snap-fit ​​part, and the first snap-fit ​​part and the second snap-fit ​​part are snapped together.

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