Novel rotor and fragrance machine

Abstract

The utility model discloses a novel rotor and a fragrance machine. The novel rotor and fragrance machine comprises a shell, a rotor, a rotary drum, an air duct, a fan, a fragrance bomb, a PCBA (Printed Circuit Board Assembly) and a control module, the rotor is rotatably sleeved in the rotating hole of the rotating drum, the rotor is connected with an output shaft of the driving motor, the rotor is provided with a rotor air inlet and at least one rotor incense outlet, and the rotating drum is provided with a rotating drum air outlet and a rotating drum incense inlet; the rotary drum is provided with rotary holes corresponding to the number of the rotors, the rotary drum is provided with rotary drum air outlets and rotary drum incense inlets which correspond to the number of the air ducts and are communicated with the rotary holes, the rotary drum is provided with an incense mixing cavity, and the incense mixing cavity is provided with a mixed incense outlet; the air duct is provided with an air duct air inlet corresponding to the rotary drum air outlet and an air duct fragrance outlet corresponding to the rotary drum fragrance inlet, the air duct is further provided with a fragrance cavity communicated with the air duct air inlet and the air duct fragrance outlet, and the fragrance bomb is installed in the fragrance cavity; and the fragrance bomb, the rotor, the fan and the control module are respectively connected with the PCBA. According to the utility model, different fragrances can be switched or the fragrance output quantity of different fragrance bullets can be controlled through the rotor.

Description

Technical Field

[0001] This utility model relates to the technical field of fragrance devices, and in particular to a novel rotor and fragrance machine. Background Technology

[0002] As people's demands for quality of life increase, they also have various needs for the quality of their living spaces. Among these, fragrance devices, which can release different fragrances into the air using fragrance sources, improve the spatial environment of users and create a comfortable atmosphere, are highly favored.

[0003] Common fragrance diffusers are mostly installed in cars or indoors to improve the interior environment. Different users have different preferences for fragrance scents. However, existing fragrance diffusers offer only one scent and cannot meet users' needs for a variety of fragrances. When a different scent is needed, the fragrance source must be changed. Furthermore, most existing fragrance diffusers can only provide the scent of a single fragrance source and cannot blend multiple fragrance sources to create a new scent, thus failing to meet users' needs for a variety of fragrances.

[0004] In view of this, this utility model is developed by deeply conceiving and actively researching, improving and testing the design of existing fragrance devices to address the many shortcomings and inconveniences caused by the imperfections in their structural design. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a novel rotor for fragrance diffusers.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A novel rotor is rotatably fitted inside the rotating hole of a rotating cylinder. The rotor is connected to the output shaft of a drive motor. The rotor has at least two rotor air inlets and at least two rotor fragrance outlets. The outer side of the rotating cylinder is provided with rotating holes and rotating cylinder air outlets corresponding to the number of rotor air inlets and rotating cylinder fragrance inlets corresponding to the number of rotor fragrance outlets.

[0008] Furthermore, the drive motor is fixedly mounted on the rotating drum. The rotor has a hollow upper and lower layer. The center of the upper layer extends upward to form a motor connector. The top of the motor connector is provided with a non-circular drive hole for the output shaft of the drive motor to be inserted and fitted. The air inlet of the rotor is located on the upper layer, and the fragrance outlet of the rotor is located on the lower layer.

[0009] Another objective of this invention is to overcome the shortcomings of the prior art and provide a fragrance diffuser that can achieve multiple fragrances by mixing fragrances on a small number of basic fragrance types.

[0010] To achieve the above objectives, the solution of this utility model is:

[0011] A fragrance diffuser using the novel rotor includes a housing, at least two rotors, a rotating cylinder, at least one air duct, a fan, at least one fragrance cartridge, a PCBA, and a control module.

[0012] The outer casing has an air inlet and a fragrance outlet connected to a fan. Each rotor is connected to a drive motor, and the rotor's air inlet is connected to the outer casing's air inlet. The rotating cylinder has a number of rotating holes corresponding to the number of rotors. The outer side of the rotating cylinder corresponding to the number of rotating holes has a number of air ducts connected to the rotating holes' air outlets and fragrance inlets. The bottom of the rotating cylinder has a fragrance mixing chamber connected to the bottom of each rotating hole, and the fragrance mixing chamber has a fragrance mixing outlet for connecting to the fan. The air ducts are located on the outer side of the rotating cylinder, and the air ducts have air duct inlets corresponding to the rotating cylinder's air outlets and air duct fragrance outlets corresponding to the rotating cylinder's fragrance inlets. The air ducts also have fragrance chambers connecting the air duct inlets and air duct fragrance outlets, and the fragrance cartridges are installed inside the fragrance chambers. The fragrance cartridges, rotors, fans, and control modules are respectively connected to the PCBA.

[0013] Furthermore, the upper rotor air inlet and the lower rotor fragrance outlet are correspondingly arranged, with two of each. The two opposite sides of the rotating drum are respectively provided with a rotating drum air outlet and a rotating drum fragrance inlet, with the rotating drum air outlet and rotating drum fragrance inlet on the same side arranged vertically in correspondence. The purpose of this invention is to overcome the shortcomings of the prior art and provide a fragrance diffuser capable of switching or mixing multiple fragrances.

[0014] A fragrance diffuser using the novel rotor includes a housing, at least one rotor, a rotating cylinder, at least one air duct, a fan, at least one fragrance cartridge, a PCBA, and a control module.

[0015] The outer casing has an air inlet and a fragrance outlet connected to a fan. The rotor's air inlet connects to the outer casing's air inlet. The rotating cylinder has a number of rotating holes corresponding to the rotor's number. The outer side of each rotating hole has a number of air ducts corresponding to the number of rotating holes, connecting the rotating cylinder's air outlet and fragrance inlet. The bottom of the rotating cylinder has a fragrance mixing chamber connecting to the bottom of each rotating hole, and the fragrance mixing chamber has a fragrance mixing outlet for connecting to the fan. The air ducts are located on the outer side of the rotating cylinder, and each air duct has an air duct inlet corresponding to the rotating cylinder's air outlet and an air duct fragrance outlet corresponding to the rotating cylinder's fragrance inlet. The air duct also has a fragrance chamber connecting the air duct inlet and the air duct fragrance outlet. The fragrance cartridge is installed inside the fragrance chamber. The fragrance cartridge, rotor, fan, and control module are respectively connected to the PCBA.

[0016] Furthermore, the outer shell is provided with at least one fragrance cartridge opening for inserting a fragrance cartridge, and the fragrance chamber of the air duct corresponds to the fragrance cartridge opening of the outer shell.

[0017] Furthermore, the air duct includes a first air duct and a second air duct, which are respectively arranged on two opposite sides of the rotating cylinder. The air inlet and air outlet of the first air duct are respectively arranged with the air outlet and air inlet of the rotating cylinder on one side of the rotating cylinder, and the air inlet and air outlet of the second air duct are respectively arranged with the air outlet and air inlet of the rotating cylinder on the other side of the rotating cylinder.

[0018] Furthermore, the rotating cylinder is provided with a plurality of rotating holes at intervals, and a rotor is provided in each rotating hole. The rotating cylinder is provided with a first air duct and a second air duct on two opposite sides corresponding to the plurality of rotating holes. The first air duct and the second air duct are respectively provided with fragrance chambers corresponding to the number of rotors. Each fragrance chamber is respectively provided with an air duct inlet and an air duct outlet.

[0019] Furthermore, the outer casing includes a housing and a rear cover, the PCBA is disposed at the bottom of the housing, and the fan is installed inside the rear cover.

[0020] Furthermore, the bottom of the rotating cylinder is provided with a cavity cover, and the cavity cover and the rotating cylinder form the aroma mixing cavity.

[0021] Furthermore, the cavity cover is provided with a connector with the aroma mixing outlet, the PCBA is located below the cavity cover, the PCBA is provided with a through hole corresponding to the connector, the connector is connected to the fan frame, and the fan is installed on the fan frame.

[0022] With the above structure, this fragrance diffuser controls the rotor rotation via a drive motor, thereby controlling whether and how closely the rotor's air inlet and outlet are connected, thus controlling the airflow and consequently whether and how much fragrance is dispensed. When a rotor has two or more air inlets, the rotation angle of the rotor can be controlled to select fragrances and mix multiple fragrances through a mixing chamber, with the final output being a blended scent. When the outlet of the rotating drum is completely offset from the rotor's air inlet, the fragrance corresponding to that outlet will not be dispensed. The degree of offset between the rotor's air inlet and the outlet controls the amount of fragrance dispensed. This invention achieves control over fragrance selection and the amount of fragrance dispensed through the coordination of the rotor, rotating drum, and air duct. The air duct can hold a variety of different fragrances. Each rotor can control one, two, or even more fragrances. By controlling the amount of fragrance emitted by different fragrance cartridges through multiple rotors, different scents can be produced. Different scents will be produced when multiple fragrances are mixed in different proportions. Users can adjust the amount of fragrance emitted by the corresponding fragrance cartridges according to their own preferences, thereby increasing, decreasing, or even turning off the scent of one or more fragrances, thus creating a variety of scents. Attached Figure Description

[0023] Figure 1 This is an exploded perspective view of a preferred embodiment of the fragrance diffuser of this utility model.

[0024] Figure 2 This is a combined appearance diagram of a preferred embodiment of the fragrance diffuser of this utility model.

[0025] Figure 3 This is a schematic diagram of the rotor structure of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the rotating drum of this utility model.

[0027] Figure 5 This is a schematic diagram of the rotating drum of the utility model from another direction.

[0028] Figure 6 This is a side view of the rotating drum of this utility model.

[0029] Figure 7 for Figure 6 AA sectional view.

[0030] Figure 8 This is a top view of the rotating cylinder of this utility model.

[0031] Figure 9 for Figure 8 BB cross-sectional view.

[0032] Figure 10 This is a top view of the fragrance diffuser of this utility model.

[0033] Figure 11 This is a side view of the fragrance diffuser of this utility model.

[0034] Figure 12 for Figure 10 CC section view.

[0035] Figure 13 for Figure 10 DD sectional view.

[0036] Figure 14 for Figure 11 EE sectional view.

[0037] Label Explanation:

[0038] 1. Outer shell; 11. Air inlet of the outer shell; 12. Fragrance outlet of the outer shell; 13. Fragrance cartridge outlet; 14. Outer shell; 15. Back cover; 2. Rotor; 21. Air inlet of the rotor; 22. Fragrance outlet of the rotor; 23. Motor connector; 24. Drive hole; 3. Rotary drum; 31. Rotary hole; 32. Air outlet of the rotary drum; 33. Fragrance inlet of the rotary drum; 34. Fragrance mixing chamber; 35. Fragrance mixing outlet; 36. Chamber cover; 37. Connector; 4. Air duct; 41. Air inlet of the air duct; 42. Fragrance outlet of the air duct; 43. Fragrance chamber; 5. Fan; 51. Fan frame; 6. Fragrance cartridge; 7. PCBA; 71. Through hole; 8. Drive motor; 81. Output shaft. Detailed Implementation

[0039] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0040] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] like Figures 1 to 14 As shown, this utility model discloses a fragrance diffuser, which includes a housing 1, at least one rotor 2, a rotating cylinder 3, at least one air duct 4, a fan 5, at least one fragrance cartridge 6, a PCBA 7, and a control module. The rotor 2 is rotatably fitted inside the rotating cylinder 3, the air duct 4 is disposed on the side of the rotating cylinder 3, the fan 5 is disposed inside the housing 1, and the fragrance cartridge 6 is detachably disposed on the air duct 4. The fragrance cartridge 6, rotor 2, fan 5, and control module are respectively connected to the PCBA 7.

[0042] The outer casing 1 has an air inlet 11 and a fragrance outlet 12 connected to the fan 5. The outer casing 1 also has at least one fragrance outlet 13 for inserting fragrance cartridges 6. The rotor 2 is connected to the output shaft 81 of the drive motor 8. The rotor 2 has at least one rotor air inlet 21 connected to the air inlet 11 and at least one rotor fragrance outlet 22 connected to the rotating cylinder 3. The rotating cylinder 3 has rotating holes 31 corresponding to the number of rotors 2. The outer side of each rotating hole 31 of the rotating cylinder 3 has a corresponding number of air ducts 4 connected to the rotating hole. The rotating cylinder 31 has an air outlet 32 ​​and an air inlet 33. The bottom of the rotating cylinder 3 is provided with a fragrance mixing chamber 34 that connects to the bottom of each rotating hole 31. The fragrance mixing chamber 34 is provided with a fragrance mixing outlet 35 for connecting to the ventilation fan 5. The air duct 4 is located on the outside of the rotating cylinder 3. The air duct 4 is provided with an air duct inlet 41 corresponding to the air outlet 32 ​​and an air duct outlet 42 corresponding to the air inlet 33. The air duct 4 is also equipped with a fragrance chamber 43 that connects the air duct inlet 41 and the air duct outlet 42. The fragrance cartridge 6 is installed in the fragrance chamber 43.

[0043] This invention relates to a fragrance diffuser. A drive motor 8 controls the rotation of a rotor 2, thereby controlling whether and how closely the rotor air inlet 21 and the rotating drum air outlet 32 ​​are connected. This controls the airflow, and consequently, whether and how much fragrance is dispensed. When a rotor 2 has two or more sets of rotor air inlets 21, fragrance selection can be achieved by controlling the rotation angle of the rotor 2. For example, when two or more sets of rotor air inlets 21 are connected to two or more sets of rotating drum air outlets 32, multiple corresponding fragrances can be dispensed simultaneously. These fragrances are then mixed in a mixing chamber 34, and finally, the blower 5 outputs the blended scent. When the rotating drum air outlet 32 ​​is completely offset from the rotor air inlet 21, the corresponding fragrance will not be dispensed. The degree of offset between the rotor air inlet 21 and the rotating drum air outlet 32 ​​controls the amount of fragrance dispensed. This invention achieves fragrance selection and fragrance quantity control through the cooperation of the rotor 2, the rotating drum 3, and the air duct 4. The air duct 4 can hold various fragrances. Each rotor 2 can control one, two, or even more fragrances. By controlling the amount of fragrance emitted by different fragrance cartridges 6 through one or more rotors 2, different scents can be produced. Different fragrances can be mixed in different proportions to create different aromas. Users can adjust the amount of fragrance emitted by the corresponding fragrance cartridge 6 according to their preferences through the rotor 2, thereby increasing, decreasing, or even turning off the scent of one or more fragrances, thus providing users with a variety of fragrance options. The control module is connected to the PCBA7, allowing the PCBA7 to control the rotation angle of the rotor 2 according to the instructions of the control module, thereby adjusting the amount of fragrance emitted by each fragrance cartridge 6.

[0044] The drive motor 8 is fixedly mounted on the top of the rotating drum 3. The rotor 2 has a hollow upper and lower layer. The center of the upper layer extends upward to form a motor connecting seat 23. The top of the motor connecting seat 23 is provided with a non-circular drive hole 24 for the output shaft 81 of the drive motor 8 to be inserted and cooperated. The rotor air inlet 21 is located on the upper layer, and the rotor fragrance outlet 22 is located on the lower layer.

[0045] In this embodiment, the upper rotor air inlet 21 and the lower rotor fragrance outlet 22 are respectively provided, and there are two of each. The two opposite sides of the rotating cylinder 3 are respectively provided with rotating cylinder air outlet 32 ​​and rotating cylinder fragrance inlet 33. The rotating cylinder air outlet 32 ​​and rotating cylinder fragrance inlet 33 on the same side are arranged vertically. The air duct 4 includes a first air duct 4A and a second air duct 4B. The first air duct 4A and the second air duct 4B are respectively provided on the two opposite sides of the rotating cylinder 3. The air duct air inlet 41 and the air duct fragrance outlet 42 of the first air duct 4A are respectively provided with the rotating cylinder air outlet 32 ​​and rotating cylinder fragrance inlet 33 on one side of the rotating cylinder 3. The air duct air inlet 41 and the air duct fragrance outlet 42 of the second air duct 4B are respectively provided with the rotating cylinder air outlet 32 ​​and rotating cylinder fragrance inlet 33 on the other side of the rotating cylinder 3. The output shaft 81 of the drive motor 8 rotates, which drives the rotor 2 to rotate, causing the two rotor air inlets 21 and the two rotor fragrance outlets 22 on the rotor 2 to block or connect the rotating drum air outlet 32 ​​and the rotating drum fragrance inlet 33, so that one rotor 2 can simultaneously control whether the two fragrance cartridges 6 in the first air duct 4A and the second air duct 4B emit fragrance, and the amount of fragrance emitted.

[0046] In this embodiment, the rotating cylinder 3 is provided with three rotating holes 31. The rotating cylinder 3 is provided with air ducts 4 with three fragrance chambers 43 on two opposite sides corresponding to the three rotating holes 31. Each fragrance chamber 43 is provided with an air inlet 41 and an air outlet 42, so that the present invention can hold six fragrance cartridges 6 at the same time and control the six fragrance cartridges through three rotors 2.

[0047] In this embodiment, the outer shell 1 includes a shell 14 and a rear cover 15. The PCBA7 is located at the bottom of the shell 14. The shell 14 and the rear cover 15 are set as separate structures, which facilitates the installation of the rotor 2, the drum 3, the air duct 4, the fan 5 and the PCBA7.

[0048] In this embodiment, the bottom of the rotating drum 3 is provided with a cavity cover 36, and the cavity cover 36 and the rotating drum 3 form the aroma mixing cavity 34. The cavity cover 36 is provided with a connector 37 with the aroma mixing outlet 35. The PCBA7 is located below the cavity cover 36. The PCBA7 is provided with a through hole 71 corresponding to the connector 37. The connector 37 is connected to the fan frame 51, and the fan 5 is installed on the fan frame 51.

[0049] The working process of this fragrance diffuser is as follows: Fragrance cartridge 6 is inserted from the fragrance cartridge port 13 of the housing 14 into the fragrance chamber 43 of the air duct 4. After the user selects the desired fragrance (either a single fragrance or a mixed fragrance) through the control module, the drive motor 8 on each rotor 2 controls the rotor 2 to rotate according to the selected fragrance, causing the corresponding fragrance channel to open or close. The fan 5 runs, and external air enters the rotor inlet 21 of the rotor 2 from the housing air inlet 11 of the housing 1. The air enters through the rotor air inlet 21 and the rotary drum air outlet 32, then through the air duct air inlet 41 into the fragrance chamber 43, where the outside air combines with the fragrance cartridge 6 to form fragrance. The fragrance then flows from the air duct air outlet 42 into the rotary drum fragrance inlet 33 and the rotor fragrance outlet 22 in sequence. If multiple rotor air inlets 21 are connected to multiple rotary drum air outlets 32, the fragrance flowing out from multiple rotor fragrance outlets 22 will mix in the fragrance mixing chamber 34 before entering the fan 5, which will then deliver the selected fragrance to the outside of the outer casing 1. If the user selects only a single fragrance, the fragrance mixing chamber 34 will only contain that single fragrance, allowing the user to blow out the desired scent. The user can increase or decrease one or more fragrances according to their preferences via the control module. The PCBA7 controls the rotation angle of the rotor 2 according to the instructions of the control module, adjusting the connection between the rotor 2 and the rotary drum air outlet 32, as well as the degree of connection, to adjust the fragrance output of the corresponding fragrance cartridge 6.

[0050] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A novel rotor, characterized in that: The rotor (2) is rotatably fitted inside the rotating hole (31) of the rotating cylinder (3). The rotor (2) is connected to the output shaft (81) of the drive motor (8). The rotor (2) has at least two rotor air inlets (21) and at least two rotor fragrance outlets (22). The outer side of the rotating cylinder (3) is provided with rotating holes (31) and rotating cylinder air outlets (32) corresponding to the number of rotor air inlets (21) and rotating cylinder fragrance inlets (33) corresponding to the number of rotor fragrance outlets (22).

2. The novel rotor as described in claim 1, characterized in that: The drive motor (8) is fixedly mounted on the rotating drum (3). The rotor (2) has a hollow upper and lower layer. The center of the upper layer extends upward to form a motor connector (23). The top of the motor connector (23) is provided with a non-circular drive hole (24) for the output shaft (81) of the drive motor (8) to be inserted and fitted. The rotor air inlet (21) is located on the upper layer, and the rotor fragrance outlet (22) is located on the lower layer.

3. A fragrance diffuser using the novel rotor as described in claim 1 or 2, characterized in that: Includes a housing (1), at least two rotors (2), a rotating drum (3), at least one air duct (4), a fan (5), at least one fragrance cartridge (6), a PCBA (7), and a control module; The outer shell (1) is provided with an air inlet (11) and an air outlet (12) for connecting to a fan (5); each rotor (2) is connected to a drive motor (8), the rotor air inlet (21) of the rotor (2) is connected to the air inlet (11) of the outer shell (1), the rotating cylinder (3) is provided with a number of rotating holes (31) corresponding to the number of rotors (2), the outer side of the rotating cylinder (3) is provided with a number of air ducts (4) corresponding to the number of rotating holes (31) and a rotating cylinder air outlet (32) and a rotating cylinder air inlet (33) connected to the rotating holes (31), and the bottom of the rotating cylinder (3) is provided with a mixing channel connected to the bottom of each rotating hole (31). The fragrance chamber (34) is provided with a fragrance mixing outlet (35) for connecting to the ventilation fan (5); the air duct (4) is located on the outside of the rotating cylinder (3), the air duct (4) is provided with an air duct inlet (41) corresponding to the rotating cylinder air outlet (32) and an air duct outlet (42) corresponding to the rotating cylinder fragrance inlet (33), the air duct (4) is also provided with a fragrance chamber (43) connecting the air duct inlet (41) and the air duct outlet (42), the fragrance cartridge (6) is installed in the fragrance chamber (43); the fragrance cartridge (6), rotor (2), fan (5) and control module are respectively connected to PCBA (7).

4. A fragrance diffuser as described in claim 3, characterized in that: The rotor (2) has an upper rotor air inlet (21) and a lower rotor fragrance outlet (22) respectively, and there are two of them. The two opposite sides of the rotating drum (3) are respectively provided with a rotating drum air outlet (32) and a rotating drum fragrance inlet (33). The rotating drum air outlet (32) and the rotating drum fragrance inlet (33) on the same side are arranged vertically in correspondence.

5. A fragrance diffuser as described in claim 3, characterized in that: The outer shell (1) is also provided with at least one fragrance cartridge opening (13) for inserting fragrance cartridges (6), and the fragrance cavity (43) of the air duct (4) corresponds to the fragrance cartridge opening (13) of the outer shell (1).

6. A fragrance diffuser as described in claim 3, characterized in that: The air duct (4) includes a first air duct (4A) and a second air duct (4B). The first air duct (4A) and the second air duct (4B) are respectively arranged on two opposite sides of the rotating cylinder (3). The air duct inlet (41) and air duct outlet (42) of the first air duct (4A) are respectively arranged with the rotating cylinder outlet (32) and rotating cylinder inlet (33) on one side of the rotating cylinder (3). The air duct inlet (41) and air duct outlet (42) of the second air duct (4B) are respectively arranged with the rotating cylinder outlet (32) and rotating cylinder inlet (33) on the other side of the rotating cylinder (3).

7. A fragrance diffuser as described in claim 6, characterized in that: The rotating cylinder (3) is provided with a plurality of rotating holes (31) spaced apart. A rotor (2) is provided in each rotating hole (31). The rotating cylinder (3) is provided with a first air duct (4A) and a second air duct (4B) on two opposite sides corresponding to the plurality of rotating holes (31). The first air duct (4A) and the second air duct (4B) are respectively provided with fragrance chambers (43) corresponding to the number of rotors (2). Each fragrance chamber (43) is respectively provided with an air duct inlet (41) and an air duct outlet (42).

8. A fragrance diffuser as described in claim 3, characterized in that: The outer casing (1) includes a housing (14) and a rear cover (15), the PCBA (7) is disposed at the bottom of the housing (14), and the fan (5) is installed inside the rear cover (15).

9. A fragrance diffuser as described in claim 3, characterized in that: The bottom of the rotating cylinder (3) is provided with a cavity cover (36), and the cavity cover (36) and the rotating cylinder (3) form the aroma mixing cavity (34).

10. A fragrance diffuser as described in claim 9, characterized in that: The cavity cover (36) is provided with a connector (37) with the aroma mixing outlet (35). The PCBA (7) is located below the cavity cover (36). The PCBA (7) is provided with a through hole (71) corresponding to the connector (37). The connector (37) is connected to the fan frame (51). The fan (5) is installed on the fan frame (51).

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