A vehicle-mounted aromatherapy

Abstract

This invention provides a car air freshener, comprising: an atomizing device adapted to convert fragrance liquid into fragrance smoke; a housing including a visible first cavity and an inlet and an outlet adapted to communicate with the first cavity; a fan device adapted to provide airflow, including a motor and fan blades driven by the motor; and a flow-dividing device including a fan cavity adapted to house the fan blades and a first flow channel and a second flow channel extending from the fan cavity. A portion of the airflow is guided by the first flow channel to the atomizing device to form a first airflow carrying fragrance smoke, while the remaining airflow is guided by the second flow channel to the first cavity to form a second airflow. The second airflow is adapted to guide and / or agitate the first airflow to promote its diffusion within the first cavity. This invention, through the second airflow generated by the second flow channel, continuously and actively guides and / or agitates the first airflow carrying fragrance smoke introduced by the first flow channel, significantly improving the uniformity of smoke distribution and cavity filling.

Description

Technical Field

[0001] This utility model belongs to the field of aromatherapy technology, and in particular relates to a car air freshener. Background Technology

[0002] Car air fresheners, commonly used to enhance the comfort of the driving environment, primarily function to convert fragrance liquid into diffused aromatherapy smoke. Existing technologies typically employ a single airflow channel design: a fan generates airflow that passes through an atomizing device, carrying the aromatherapy smoke directly into a visible cavity and exiting through a mist outlet. While this single airflow path achieves basic smoke delivery, it has significant drawbacks: the aromatherapy smoke, once inside the cavity, relies mainly on natural diffusion or unidirectional airflow, tending to accumulate locally at the top of the cavity or near the mist outlet. This makes it difficult to create a uniform, diffused smoke effect throughout the entire visible cavity, reducing visual appeal and the uniformity of fragrance distribution. The mixing of smoke with the air inside the cavity relies mainly on passive diffusion, lacking an active disturbance mechanism. This results in slow, rigid smoke flow within the cavity, and the smoke is prone to interruptions or condensation due to minor changes in temperature or airflow. To improve diffusion, existing technologies often require increasing the atomization volume or fan power, which not only increases energy consumption and accelerates the consumption of fragrance liquid but may also lead to excessively high smoke concentrations within the cavity or even dripping. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a car air freshener that can effectively promote the rapid, uniform diffusion and full mixing of aromatherapy smoke in the visible cavity, while taking into account both energy efficiency and visual effect. This solves the problem that existing car air fresheners, which only have a first flow channel, result in uneven diffusion of aromatherapy smoke and low diffusion efficiency in the shell, thus meeting the needs of users.

[0004] To achieve the above objectives, this utility model provides a car air freshener, including...

[0005] Atomizing device suitable for converting aromatherapy liquid into aromatherapy smoke.

[0006] The housing includes a visible first cavity and a mist inlet and a mist outlet adapted to communicate with the first cavity.

[0007] A fan unit, adapted to provide airflow, including a motor and fan blades driven by said motor, provides continuous and stable airflow power for the entire in-car air freshener.

[0008] The airflow distribution device includes a fan cavity adapted to house the fan blades and a first flow channel and a second flow channel extending from the fan cavity. A portion of the airflow is guided through the first flow channel to the atomizing device to form a first airflow carrying aromatherapy smoke, while the remaining airflow is guided through the second flow channel to the first cavity to form a second airflow. The second airflow is adapted to guide and / or agitate the first airflow to promote its diffusion within the first cavity. An inlet is used to introduce the first airflow carrying aromatherapy smoke, and an outlet discharges the diffused aromatherapy smoke into the vehicle interior.

[0009] Preferably, the housing includes a first housing, a second housing, and a base. The first housing covers the second housing and encloses it to form the first cavity. The base and the second housing enclose to form a mounting cavity. The motor is mounted in the mounting cavity. The base includes a base body and a mating housing, and the two enclose to form the diversion device.

[0010] Preferably, the first and second flow channels remain open simultaneously and continuously to prevent uneven diffusion of aromatherapy smoke due to instability or low velocity of any one airflow, thus ensuring the continuity and stability of smoke delivery and auxiliary diffusion. The velocity of the second airflow is not lower than that of the first airflow, enabling it to effectively guide and agitate the first airflow.

[0011] Preferably, the first flow channel includes a first air inlet suitable for connecting to the fan cavity and a first air outlet suitable for connecting to the atomizing device; the second flow channel includes a second air inlet suitable for connecting to the fan cavity and a second air outlet suitable for connecting to the first cavity; wherein, the flow area of ​​the second air inlet is 25% to 50% of the flow area of ​​the first air inlet, thus reasonably distributing the airflow into the first and second flow channels. This ensures that the second airflow has sufficient power to guide and agitate the first airflow, while the airflow is not too large, which would affect the first airflow's ability to carry aromatherapy smoke, thus guaranteeing the coordinated cooperation of the two airflows during the diffusion of aromatherapy smoke.

[0012] Preferably, at least one of the base body and the mating housing is provided with a baffle, the baffle is disposed at the connection between the second flow channel and the fan cavity, and the baffle is used to limit the flow area of ​​the second air inlet.

[0013] Preferably, the cross-sectional area of ​​the first flow channel is larger than that of the second flow channel, which helps to increase the flow velocity of the second airflow and enhance its ability to guide and disturb the first airflow.

[0014] Preferably, at least one of the base body and the mating shell is provided with a flow guiding slope, which forms the sidewall of the second flow channel, so that the second flow channel gradually contracts from the second air inlet toward the second air outlet, thereby accelerating the airflow and making the flow of the second airflow smoother and more stable.

[0015] Preferably, the second housing is truncated cone-shaped, including a converging end, a gradually expanding end, and a conical peripheral wall. The generatrix of the conical peripheral wall is an inwardly convex arc line. The second housing includes an outlet air passage suitable for communicating with the second flow channel. The outlet air passage is disposed near the outer periphery of the gradually expanding end. The outlet air passage includes an inlet section, an outlet section, and an arc-shaped connecting section suitable for connecting the inlet section and the outlet section, wherein:

[0016] The air intake section extends along the central axis of the second housing;

[0017] The direction of the air outlet section is parallel to the tangent direction of the gradually expanding end, or the direction of the air outlet section is tangent to the inner surface of the peripheral wall of the first cavity. The output direction of the air outlet section is a single fixed direction, so that the second airflow is thrown into the first cavity in a rotating manner to form a vortex or rotating airflow field, which greatly enhances the disturbance effect, makes the smoke present a more dynamic and graceful shape, avoids stagnation or flow interruption, and improves the visual aesthetics.

[0018] Preferably, the first housing has a guide crown at its top, with the central area of ​​the guide crown at least partially aligned with the mist inlet. The wall of the guide crown extending from its central area to the periphery is a convex curved surface. The guide crown is suitable for guiding the first airflow carrying aromatherapy smoke to form a waterfall effect that diffuses outwards, preventing the aromatherapy smoke from accumulating near the mist inlet. The vertical projection area of ​​the airflow outlet on the horizontal plane does not overlap with the vertical projection area of ​​the guide crown on the horizontal plane. This projection misalignment design allows for a layered layout of functional structures within a limited space. The guide crown guides the initial state of the smoke, while the second airflow assists in the subsequent diffusion. This design allows the second airflow to focus on disturbing the smoke in the lower part of the first cavity, preventing high-speed airflow from disrupting the precise smoke shape formed at the crown and improving visual appeal.

[0019] Preferably, the second housing is formed with a core cavity suitable for housing the atomizing device.

[0020] Preferably, the atomizing device includes an atomizing heating tube disposed in its center, the atomizing heating tube having a hollow structure and defining an outlet air duct, the outlet air duct being adapted to connect the inlet air vent and the first outlet air vent.

[0021] Preferably, the mist outlets are evenly distributed circumferentially on the top of the first housing, allowing the aromatherapy smoke to be evenly discharged into the vehicle interior from multiple directions. The mist outlets are located on the periphery of the guide crown. The housing also includes a guide cover plate disposed above the first housing. The guide cover plate covers the mist outlets and, together with the mist outlet, forms a slit-like mist outlet gap, which accelerates and guides the discharge of aromatherapy smoke, preventing direct spraying, and also helps prevent dust and other impurities from entering the housing.

[0022] Preferably, the motor is positioned above the fan cavity, which includes an air inlet adapted to connect to the mounting cavity, ensuring that the motor receives sufficient air during operation and aiding in motor heat dissipation.

[0023] Preferably, the mounting cavity is provided with a battery suitable for powering the motor and the atomizing device, and a control circuit board suitable for controlling the motor and the atomizing device to open and close. The base body is also provided with a charging interface and a control button electrically connected to the control circuit board.

[0024] Preferably, the bottom of the base body is covered with an anti-slip pad, which improves the stability of the car air freshener.

[0025] The beneficial effects of this utility model are:

[0026] 1. The second airflow generated by the second flow channel continuously and actively guides and / or disturbs the first airflow carrying aromatherapy smoke introduced by the first flow channel, forming a strong mixing effect in the visualized first cavity, preventing local accumulation, significantly improving the uniformity of smoke distribution and cavity filling, avoiding uneven fragrance concentration in the car, and the uniformly diffused smoke and dynamic shape greatly enhance the aesthetic value of the visualized cavity.

[0027] Meanwhile, more efficient diffusion means that while achieving the same sensory effect, the amount of atomization or motor power can be appropriately reduced, thereby saving aromatherapy liquid and electricity and extending the usage time.

[0028] Second, the design optimization of the second flow channel (such as the cross section of the flow area of ​​the second air inlet and the setting of the guide slope to form a gradually narrowing flow channel) increases the flow velocity of the second airflow, enabling it to produce a stronger disturbance effect with a smaller flow rate, achieving "small airflow, big effect" and reducing overall energy consumption. Attached Figure Description

[0029] Figure 1 is a structural schematic diagram of a car air freshener provided by this utility model.

[0030] Figure 2 is a schematic diagram of an explosion of a car air freshener provided by this utility model.

[0031] Figure 3 is a structural schematic diagram of a car air freshener provided by this utility model.

[0032] Figure 4 is a schematic diagram of the structure of the mating shell provided by this utility model.

[0033] Figure 5 is an exploded view of the base provided by this utility model.

[0034] Figure 6 is a schematic diagram of the structure of the second housing provided by this utility model.

[0035] Figure 7 is a perspective view of the second housing provided by this utility model from another angle.

[0036] In the diagram: 11. Guide cover; 12. First housing; 121. Guide crown; 122. Mist outlet; 13. Second housing; 131. Core cavity; 1321. Air inlet section; 1322. Air outlet section; 1323. Arc-shaped connecting section; 14. Base; 141. Base body; 142. Matching housing; 1421. Baffle; 1422. Air inlet; 15. First cavity; 16. Mist inlet; 17. Mist outlet gap; 18. 19. Anti-slip mat; 2. Mounting cavity; 2. Atomizing device; 21. Atomizing heating element; 22. Fog outlet duct; 3. Fan device; 31. Motor; 32. Fan blade; 41. Fan cavity; 42. First flow channel; 421. First air inlet; 422. First air outlet; 43. Second flow channel; 431. Second air inlet; 432. Second air outlet; 51. Battery; 52. Control circuit board; 53. Charging interface; 54. Control switch. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0039] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] like Figure 1-7A car air freshener includes a housing 1, an atomizing device 2, a fan device 3, and a flow divider. The housing includes a guide cover 11, a first housing 12, a second housing 13, and a base 14 arranged sequentially from top to bottom. The first housing 12 covers the second housing 13 and encloses it to form a visible first cavity 15 adapted to connect the inlet 16 and outlet 122 of the first cavity 15. The second housing 13 forms a core cavity 131 adapted to accommodate the atomizing device 2. The base 14 includes a base body 141, a mating housing 142, and a flow divider formed by the two. The bottom of the base body 141 is covered with an anti-slip pad 18 to improve the stability of the car air freshener. The atomizing device 2 is adapted to convert the fragrance liquid into fragrance smoke. The fan device 3 is adapted to provide airflow, providing continuous and stable airflow power for the entire car air freshener, including a motor 31 and fan blades 32 driven by the motor 31. The base 14 and the second housing 13 enclose a mounting cavity 19. The mounting cavity 19 houses a motor 31, a battery 51 suitable for powering the motor 31 and the atomizing device 2, and a control circuit board 52 suitable for controlling the opening and closing of the motor 31 and the atomizing device 2. The base body 141 also has a charging interface 53 and a control button 54 electrically connected to the control circuit board 52. The diversion device includes a fan cavity 41 suitable for housing the fan blades 32 and a first flow channel 42 and a second flow channel 43 extending from the fan cavity 41. The motor 31 is positioned above the fan cavity 41, which includes an air inlet 1422 suitable for connecting to the mounting cavity, ensuring sufficient airflow for the motor 31 during operation and aiding in heat dissipation. Part of the airflow is guided through the first flow channel 42 to the atomizing device 2 to form a first airflow carrying aromatherapy smoke, while the remaining airflow is guided through the second flow channel 43 to the first cavity 15 to form a second airflow. The second airflow is suitable for guiding and / or agitating the first airflow to promote its diffusion within the first cavity 15. The mist inlet 16 introduces the first airflow carrying aromatherapy smoke, while the mist outlet 122 discharges the diffused aromatherapy smoke into the vehicle interior. The first flow channel 42 and the second flow channel 43 remain open simultaneously and continuously to prevent uneven aromatherapy smoke diffusion due to instability or low velocity of any one flow, ensuring the continuity and stability of smoke delivery and auxiliary diffusion. The velocity of the second airflow is not lower than that of the first airflow, enabling it to effectively guide and agitate the first airflow.

[0041] In this embodiment, the first flow channel 42 includes a first air inlet 421 adapted to connect to the ventilation chamber 41 and a first air outlet 422 adapted to connect to the atomizing device 2. The second flow channel 43 includes a second air inlet 431 adapted to connect to the ventilation chamber 41 and a second air outlet 432 adapted to connect to the first cavity 15. The atomizing device 2 includes an atomizing heating tube 21 disposed in its center. The atomizing heating tube 21 has a hollow structure and defines an outlet air duct 22, which is adapted to connect the inlet 16 and the first air outlet 422. A baffle 1421 is provided in the housing 142. The baffle 1421 is located at the connection between the second flow channel 43 and the fan cavity 41. The baffle 1421 is used to limit the flow area of ​​the second air inlet 431. At least one of the base body 141 and the housing 142 is provided with a baffle 1421. The baffle 1421 is located at the connection between the second flow channel 43 and the fan cavity 41. The baffle 1421 is used to limit the flow area of ​​the second air inlet 431. The flow area of ​​the second air inlet 431 is 35% of the flow area of ​​the first air inlet 421. The air flow rate entering the first flow channel 42 and the second flow channel 43 is reasonably distributed so that the second air flow has sufficient power to guide and disturb the first air flow, while the first air flow will not be affected by the excessive air flow rate, thus ensuring the coordinated cooperation of the two air flows during the diffusion of the aromatherapy smoke.

[0042] In some other embodiments, the cross-sectional area of ​​the first flow channel 42 is larger than that of the second flow channel 43, which helps to increase the flow velocity of the second airflow and enhance its ability to guide and disturb the first airflow. Specifically, at least one of the base body 141 and the mating housing 142 is provided with a guide slope, which forms the sidewall of the second flow channel 43, so that the second flow channel 43 gradually contracts from the second air inlet 431 toward the second air outlet 432, accelerating the airflow while making the flow of the second airflow smoother and more stable.

[0043] In this embodiment, the second housing 13 is truncated cone-shaped, including a converging end, a gradually expanding end, and a conical peripheral wall. The generatrix of the conical peripheral wall is an inwardly convex arc line. The second housing 13 includes an outlet air passage suitable for connecting the second flow channel 43. The outlet air passage is located near the outer periphery of the gradually expanding end. The outlet air passage includes an inlet section 1321, an outlet section 1322, and an arc-shaped connecting section 1323 suitable for connecting the inlet section 1321 and the outlet section 1322. The inlet section 1321 extends along the central axis of the second housing 13. The outlet section 1322 extends in a direction parallel to the tangent direction of the gradually expanding end. The output direction of the outlet section 1322 is a single fixed direction, so that the second airflow is thrown into the first cavity 15 in a rotating manner, forming a vortex or rotating airflow field, which greatly enhances the disturbance effect, makes the smoke present a more dynamic and elegant shape, avoids stagnation or flow interruption, and improves the visual aesthetics.

[0044] In this embodiment, the top of the first housing 12 is provided with a guide crown 121. The central region of the guide crown 121 is at least partially opposite to the mist inlet 16. The wall surface of the guide crown 121 extending from its central region to the periphery is a convex curved surface. The guide crown 121 is suitable for guiding the first airflow carrying aromatherapy smoke to form a waterfall effect that diffuses in all directions, preventing the aromatherapy smoke from accumulating near the mist inlet 16. The vertical projection area of ​​the air outlet channel on the horizontal plane does not overlap with the vertical projection area of ​​the guide crown 121 on the horizontal plane. The projection misalignment design allows for a layered layout of functional structures within a limited space. The guide crown 121 guides the initial state of the smoke, and the second airflow assists in the later diffusion. This design allows the second airflow to focus on disturbing the smoke in the lower part of the first cavity 15, preventing high-speed airflow from destroying the precise smoke shape formed at the crown and improving visual appeal.

[0045] In this embodiment, the mist outlets 122 are evenly distributed around the top of the first housing 12, allowing the aromatherapy smoke to be evenly discharged into the vehicle interior from multiple directions. The mist outlets 122 are located around the guide crown 121. The housing 1 also includes a guide cover 11 disposed above the first housing 12. The guide cover 11 covers the mist outlets 122 and forms a slit-shaped mist outlet gap 17 with the mist outlet edge, which accelerates and guides the discharge of aromatherapy smoke, preventing direct spraying, and also helps prevent dust and other impurities from entering the interior of the housing 1.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A car air freshener, characterized in that, include Atomizing device suitable for converting aromatherapy liquid into aromatherapy smoke. The housing includes a visible first cavity and an inlet and an outlet adapted to communicate with the first cavity. The housing includes a first housing, a second housing, and a base. The first housing covers and encloses the second housing to form the first cavity. The base and the second housing enclose to form an installation cavity. The base includes a base body, a mating housing, and a diversion device formed by the two enclosing each other. A fan assembly adapted to provide airflow includes a motor and fan blades driven by the motor, the motor being mounted in the mounting cavity. The diversion device includes a fan cavity adapted to house the fan blades and a first flow channel and a second flow channel extending from the fan cavity. Part of the airflow is guided through the first flow channel to the atomizing device to form a first airflow carrying aromatherapy smoke, and the remaining airflow is guided through the second flow channel to the first cavity to form a second airflow. The first flow channel and the second flow channel are simultaneously and continuously kept open. The flow velocity of the second airflow is not lower than the flow velocity of the first airflow. The second airflow is adapted to guide and / or agitate the first airflow to promote its diffusion within the first cavity.

2. The car air freshener according to claim 1, characterized in that, The first flow channel includes a first air inlet adapted to connect to the fan cavity and a first air outlet adapted to connect to the atomizing device; the second flow channel includes a second air inlet adapted to connect to the fan cavity and a second air outlet adapted to connect to the first cavity, wherein: The flow area of ​​the second air inlet is 25% to 50% of the flow area of ​​the first air inlet.

3. A car air freshener according to claim 2, characterized in that, At least one of the base body and the mating housing is provided with a baffle, which is disposed at the connection between the second flow channel and the fan cavity, and the baffle is used to limit the flow area of ​​the second air inlet.

4. A car air freshener according to any one of claims 1-3, characterized in that, The cross-sectional area of ​​the first flow channel is larger than that of the second flow channel.

5. A car air freshener according to claim 4, characterized in that, At least one of the base body and the mating shell is provided with a flow guiding slope, which forms the sidewall of the second flow channel, so that the second flow channel gradually contracts from the second air inlet toward the second air outlet.

6. A car air freshener according to claim 1, characterized in that, The second housing is truncated cone-shaped, including a converging end, a gradually expanding end, and a conical peripheral wall. The generatrix of the conical peripheral wall is an inwardly convex arc line. The second housing includes an outlet air passage suitable for communicating with the second flow channel. The outlet air passage is disposed near the outer periphery of the gradually expanding end. The outlet air passage includes an inlet section, an outlet section, and an arc-shaped connecting section suitable for connecting the inlet section and the outlet section, wherein: The air intake section extends along the central axis of the second housing; The direction of the air outlet section is parallel to the tangent direction of the expanding end, or the direction of the air outlet section is tangent to the inner surface of the peripheral wall of the first cavity. The output direction of the air outlet section is a single fixed direction, so that the second airflow is thrown into the first cavity in a rotating manner.

7. A car air freshener according to claim 6, characterized in that, The first housing is provided with a guide crown at the top. The central area of ​​the guide crown is at least partially opposite to the mist inlet. The wall surface of the guide crown extending from its central area to the periphery is a convex curved surface. The vertical projection area of ​​the air outlet channel on the horizontal plane does not overlap with the vertical projection area of ​​the guide crown on the horizontal plane.

8. A car air freshener according to claim 2, characterized in that, The second housing is formed with a core cavity suitable for housing the atomizing device; The atomizing device includes an atomizing heating tube disposed in its center. The atomizing heating tube has a hollow structure and defines a mist outlet duct. The mist outlet duct is adapted to connect the mist inlet and the first air outlet.

9. A car air freshener according to claim 1, characterized in that, At least one of the following conditions must be met: The mist outlets are evenly distributed around the top of the first housing, and the mist outlets are located on the periphery of the guide crown; the housing also includes a flow guide cover plate located above the first housing, the flow guide cover plate being adapted to cover the mist outlets and to form a slit-shaped mist outlet gap with the mist outlet edge; The motor is disposed above the fan cavity, and the fan cavity includes an air inlet adapted to communicate with the mounting cavity; The mounting cavity is provided with a battery suitable for powering the motor and the atomizing device, and a control circuit board suitable for controlling the motor and the atomizing device to open and close. The base body is also provided with a charging interface and a control button electrically connected to the control circuit board. The bottom of the base body is covered with an anti-slip pad.

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