Fragrance diffusion equipment

Abstract

The utility model provides a fragrance diffusion equipment, including atomizing head, liquid storage bottle, air pump, atomizing head and liquid storage bottle connection, atomizing head includes atomizing head body, atomizing core, pipette and liquid collection tank, atomizing head body and liquid storage bottle connection, atomizing core and atomizing head body connection, liquid collection tank is connected with the liquid collection tank, the liquid collection tank is connected with the liquid storage bottle, and the liquid collection tank is connected with the liquid collection tank. One end of the pipette is connected with the atomizing core, the other end of the pipette is inserted into the liquid storage bottle, and the air pump is communicated with the atomizing core; the liquid collecting groove is connected to the bottom end of the atomizing head body, the atomizing core is enclosed between the atomizing head body and the liquid collecting groove, the atomizing core and the liquid collecting groove extend into a bottle opening of a liquid storage bottle, and a liquid return hole is further formed in the liquid collecting groove. The liquid collecting groove is formed, the atomizing core is enclosed between the atomizing head body and the liquid collecting groove, and the liquid collecting groove extends into the bottle opening of the liquid storage bottle and then is connected with the atomizing head body, so that after the liquid storage bottle topples over, a large amount of liquid in the bottle can be prevented from flowing out, and loss caused by large amount of liquid leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization devices, in particular to a fragrance diffusion device. Background Art

[0002] With the continuous improvement of living standards and the constant pursuit of quality of life, in order to improve the air environment, people mostly use the method of spraying fresheners such as perfume or essential oils indoors to improve the air quality, so as to eliminate odors, keep the air fresh, and sterilize. However, this method requires frequent spraying of fresheners into the air to maintain the fragrance, which is more troublesome to use. In addition, since the sprayed freshener particles are large and can float in a small range, this method is inefficient and wastes a lot of money. Based on this, people have invented fragrance diffusion equipment, which uses the negative pressure principle to atomize fresheners such as perfume or essential oils at the atomizer, and discharges the mist from the outlet to diffuse the fragrance into the air to improve the air quality.

[0003] Since the atomization channel of most existing aromatherapy diffusers is connected from the mist outlet to the essential oil bottle, if the aromatherapy diffuser is accidentally tipped over, the oil in the essential oil bottle will leak out through the atomization channel in large quantities. The large amount of leakage will not only cause waste, but also cause the oil to enter the electronic control components of the aromatherapy diffuser and corrode the circuit board or damage the air pump, causing damage to the equipment. In severe cases, it may even cause a fire due to a short circuit. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a fragrance diffusion device to solve the problem of large amounts of liquid leakage after the fragrance diffusion device accidentally tipped over.

[0005] In order to solve the above technical problems, the technical solution used in this utility model is:

[0006] The utility model discloses a fragrance diffusion device, comprising an atomizing head, a liquid storage bottle, and an air pump. The atomizing head is connected to the liquid storage bottle, and comprises an atomizing head body, an atomizing core, a liquid pipette, and a liquid collecting tank. The atomizing head body is connected to the liquid storage bottle, and the atomizing core is connected to the atomizing head body. One end of the liquid pipette is connected to the atomizing core, and the other end is inserted into the liquid storage bottle. The air pump is connected to the atomizing core and is used to provide airflow to the atomizing core to atomize the liquid sucked into the atomizing core through the liquid pipette.

[0007] The liquid collecting tank is connected to the bottom end of the atomizer head body, enclosing the atomizer core between the atomizer head body and the liquid collecting tank. The atomizer core and the liquid collecting tank extend into the bottle mouth of the liquid storage bottle. The liquid collecting tank is also provided with a liquid return hole connected to the liquid storage bottle.

[0008] Preferably, the liquid return hole is formed by the gap formed between the bottom end of the atomizing core and the liquid collecting tank after passing through the liquid collecting tank;

[0009] And / or, the liquid collecting tank is provided with a conducting hole connected to the liquid storage bottle, and the conducting hole is higher than the inner bottom of the liquid collecting tank.

[0010] Further preferably, the bottom end of the atomizer core passes through the liquid collecting tank and then extends into the liquid storage bottle, and one end of the liquid pipe is connected to the bottom end of the atomizer core, and the other end is inserted into the liquid storage bottle.

[0011] Further preferably, the radial length of the gap ranges from 0.20 mm to 0.40 mm.

[0012] And / or, the side wall of the liquid collecting tank is provided with a first columnar wall recessed inwardly, a first top plate is provided on the top side of the first columnar wall, and the first top plate is provided with the conducting hole;

[0013] And / or, the diameter of the via hole ranges from 0.5 to 1.0 mm.

[0014] Further preferably, the liquid collecting tank is detachably connected to the atomizing head body, and the top edge of the liquid collecting tank is tightly fitted with the atomizing head body.

[0015] Further preferably, the side wall of the liquid collecting tank is provided with a second cylindrical wall recessed inwardly, and the top side of the second cylindrical wall is provided with a second top plate. The liquid collecting tank is fixedly connected to the atomizing head body by a bolt that passes through the second top plate and is inserted into the atomizing head body, and the top edge of the liquid collecting tank is tightly fitted with the atomizing head body.

[0016] Preferably, an atomizing chamber is provided in the atomizing head body, and a first atomizing cover is provided in the atomizing chamber. The first atomizing cover divides the atomizing chamber into an upper cavity and a lower cavity that are interconnected. The atomizing core and the liquid collecting tank are both located in the lower cavity.

[0017] Further preferably, a second atomizing cover is further provided in the lower cavity, and first atomizing channels are circumferentially spaced apart on the first atomizing cover, the first atomizing channels connecting the upper cavity and the lower cavity, the second atomizing cover is located between the first atomizing cover and the atomizing core, and a second atomizing channel communicating with the lower cavity is formed between the second atomizing cover and the first atomizing cover.

[0018] More preferably, the atomizer head body is provided with a gas channel communicating with the atomizer core, the gas channel is located below the second atomizer cover, and a support portion is provided at the bottom of the second atomizer cover, and the support portion abuts against the top side of the gas channel.

[0019] More preferably, the second atomizing cover comprises a cover plate protruding toward the first atomizing cover, the cover plate is provided with a vertical enclosure along its circumference, and a backflow gap is provided between the outer side of the enclosure and the first atomizing cover;

[0020] The first atomizing cover is provided with a plurality of pressure blocks at intervals along the circumferential edge of the top side of the enclosure, and the pressure blocks cooperate with the support portion to vertically fix the second atomizing cover; and / or, the enclosure is provided with a positioning groove, and the first atomizing cover is provided with a positioning plate, and the positioning plate is inserted into the positioning groove to circumferentially fix the second atomizing cover.

[0021] Compared with the prior art, the beneficial effects of the fragrance diffusion device described in this utility model are mainly reflected in:

[0022] The utility model provides the liquid collecting tank, encloses the atomizing core between the atomizing head body and the liquid collecting tank, and extends the liquid collecting tank into the bottle mouth of the liquid storage bottle and then connects with the atomizing head body. The bottle mouth of the liquid storage bottle can be blocked to the maximum extent without affecting the patency of the atomizing channel of the fragrance diffusion device, thereby preventing the sudden outflow of a large amount of liquid in the bottle when the fragrance diffusion device falls over, buying time for the user to discover the tipping situation in time, avoiding the loss of a large amount of leakage, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other purposes, features and advantages of the present invention will become more apparent through a more detailed description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the accompanying drawings, and the drawings are not intentionally scaled to actual size. The emphasis is on illustrating the subject matter of the present invention.

[0024] Figure 1 A three-dimensional diagram of a partial structure of a fragrance diffusion device provided in an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 The internal structure of the three-dimensional Figure 1 ;

[0026] Figure 3 for Figure 1 The internal structure of the three-dimensional Figure 2 ;

[0027] Figure 4 A three-dimensional structural diagram of the liquid collecting tank provided in an embodiment of the present utility model;

[0028] Figure 5 A three-dimensional structural diagram of the second atomizing cover provided in an embodiment of the present utility model;

[0029] Description of the drawings: atomizer head 1, liquid collecting tank 2, liquid storage bottle 3, atomizer core 4, liquid return hole 5, guide hole 6, first columnar wall 7, second columnar wall 8, first top plate 9, second top plate 10, first atomizer cover 11, pressing block 110, positioning plate 111, upper cavity 12, lower cavity 13, second atomizer cover 14, cover plate 140, surrounding plate 141, positioning groove 142, support part 143, first atomizer channel 15, second atomizer channel 16, gas channel 17, mist outlet 18, atomizer head body 19, and liquid pipette 20. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments cited do not limit the present invention. In this embodiment, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention.

[0031] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be an intermediate element. The terms "mounted," "one end," "the other end," and similar expressions used in this utility model are for illustrative purposes only.

[0032] This embodiment provides a fragrance diffusion device, such as Figure 1 and Figure 2 As shown, it includes an atomizer head 1, a liquid storage bottle 3, and an air pump (not shown in the figure). The atomizer head 1 is connected to the liquid storage bottle 3. The atomizer head 1 includes an atomizer head body 19, an atomizer core 4, a liquid suction pipe 20 and a liquid collecting tank 2. The atomizer head body 19 is connected to the liquid storage bottle 3, the atomizer core 4 is connected to the atomizer head body 19, one end of the liquid suction pipe 20 is connected to the atomizer core 4, and the other end is inserted into the liquid storage bottle 3. The air pump is communicated with the atomizer core 4 for providing airflow to the atomizer core 4 to atomize the liquid sucked into the atomizer core 4 through the liquid suction pipe 20; the liquid collecting tank 2 is connected to the bottom end of the atomizer head body 19, enclosing the atomizer core 4 between the atomizer head body 19 and the liquid collecting tank 2, the atomizer core 4 and the liquid collecting tank 2 extend into the bottle mouth of the liquid storage bottle 3, and the liquid collecting tank 2 is also provided with a liquid return hole connected to the liquid storage bottle 3.

[0033] The utility model provides a liquid collecting tank 2 to enclose the atomizing core 4 between the atomizing head body 19 and the liquid collecting tank 2, and the liquid collecting tank 2 is extended into the bottle mouth of the liquid storage bottle 3 and then connected to the atomizing head body 19. The bottle mouth of the liquid storage bottle 3 can be blocked to the maximum extent without affecting the patency of the atomizing channel of the fragrance diffusion device, thereby preventing the sudden outflow of a large amount of liquid in the bottle when the fragrance diffusion device is tipped over, buying time for the user to discover the tipping situation in time, avoiding the loss of a large amount of leakage, and improving the user experience.

[0034] In a preferred embodiment, the liquid return hole 5 is formed by the gap between the bottom end of the atomizer core 4 and the liquid collection tank 2 after it passes through the liquid collection tank 2. It should be noted that this gap can be continuous or intermittent. The liquid return hole 5 is used to return the oil that falls back due to oversized atomized particles during the atomization operation of the aroma diffuser to the liquid storage bottle 3 through the liquid return hole 5.

[0035] In a further preferred embodiment, in order to prevent the oil in the bottle from continuously flowing out from the liquid return hole 5 after the liquid storage bottle 3 is tilted, the diameter of the liquid return hole 5 is set to a certain value or value range with the help of the liquid return hole 5 provided on the liquid collecting tank 2 and connected to the liquid storage bottle 3. Because when the diameter of the liquid return hole 5 is small to a certain extent, the liquid channel and the gas channel 17 cannot coexist in the liquid return hole 5. At the same time, the essential oil itself has a certain viscosity. The oil is easy to form a certain surface tension in the liquid return hole 5, and thus the liquid in the liquid storage bottle 3 cannot continuously flow out from the liquid return hole 5 after the liquid storage bottle 3 is tilted, thereby avoiding the problem of continuous oil leakage and further reducing leakage losses.

[0036] It should be noted that, when the liquid storage bottle 3 is tilted when the device is not turned on, the liquid in the liquid storage bottle 3 will flood the return hole 5, and the liquid may flow out for a short time. However, after the liquid flows out a little, a pressure difference will be generated at both ends of the return hole 5, that is, inside and outside the liquid storage bottle 3. After a certain pressure difference is generated inside and outside the liquid storage bottle 3, the liquid in the bottle cannot flow out continuously; and when the liquid storage bottle 3 is tilted during the atomization operation of the device, since the atomizing head 1 continuously sprays liquid through the negative pressure principle, the inside of the liquid storage bottle 3 will become a continuous negative pressure chamber, which will prevent the liquid in the liquid storage bottle 3 from continuously flowing out from the return hole 5, and naturally leakage is impossible.

[0037] Specifically, the bottom end of the atomizing core 4 passes through the liquid collecting tank 2 and then extends into the liquid storage bottle 3 , and one end of the liquid suction tube 20 is connected to the bottom end of the atomizing core 4 , and the other end is inserted into the liquid storage bottle 3 .

[0038] In a preferred embodiment, in order to ensure that the liquid storage bottle 3 is not easily leaked when tilted, and to allow the liquid collected in the liquid collection tank 2 to flow back into the liquid storage bottle 3 during normal atomization operation of the device (i.e., when the liquid storage bottle 3 is in an upright state), the radial length of the liquid return hole 5 ranges from 0.20 mm to 0.40 mm, preferably 0.30 mm, that is, the unilateral radial clearance between the outer periphery of the atomizer core 4 and the bottom plate of the liquid collection tank 2 is 0.30 mm. It can be understood that when this value is reduced from 0.30 mm, the problem of tilting and leakage will be less likely to occur, or the time of maintaining non-continuous leakage will be longer, but at the same time, the smoothness of the liquid return flow in the liquid collection tank 2 during normal atomization operation will be reduced. Similarly, when this value is increased from 0.30 mm, the problem of tilting and leakage will be relatively more likely to occur, or the time of maintaining non-continuous leakage will be shortened, but at the same time, the smoothness of the liquid return flow in the liquid collection tank 2 during normal atomization operation will be improved.

[0039] In another preferred embodiment, Figure 2 and Figure 4 As shown, the liquid collecting tank 2 is provided with a conducting hole 6 which is in communication with the liquid storage bottle 3, and the conducting hole 6 is higher than the inner bottom of the liquid collecting tank 2. In this embodiment, by providing the conducting hole 6, another channel is provided for the internal and external communication of the liquid storage bottle 3 in addition to the atomizing core 4 and the liquid return hole 5, which can promote the balance of air pressure inside and outside the liquid storage bottle 3, and promote the liquid in the liquid collecting tank 2 to smoothly flow back into the liquid storage bottle 3 from the liquid return hole 5, thereby ensuring the reflux speed at the liquid return hole 5. The conducting hole 6 is provided higher than the inner bottom of the liquid collecting tank 2 to prevent the conducting hole 6 from being submerged by the liquid collected at the inner bottom of the liquid collecting tank 2 during the atomization operation of the device. It should be noted that the distance that the conducting hole 6 is higher than the inner bottom of the liquid collecting tank 2 can be comprehensively determined by the atomization amount of the device, the size of the atomized particles and the single atomization operation time; under the same other device structures and test conditions, when the device of this embodiment is tilted during the non-operating period, the duration for maintaining no leakage is shortened to a certain extent compared to the case where the conducting hole 6 is not provided. The sizes of the conducting hole 6 and the liquid return hole 5 can be adjusted and determined accordingly according to the specific requirements for the duration for maintaining no leakage.

[0040] Therefore, in a further preferred embodiment, in order to ensure the function of preventing leakage when the device is tilted when not in operation when the conducting hole 6 is provided, the diameter of the conducting hole 6 is preferably in the range of 0.5 to 1.0 mm. The present embodiment can take into account the reflux speed at the liquid return hole 5 and the function of dumping that is not easy to leak. In the present embodiment, it has been tested that the liquid storage bottle 3 can be tilted horizontally (tilting angle is 90 °) for 10 minutes without oil leakage, and tilted vertically (tilting angle is 180 °) for 2 minutes without oil leakage. It should be noted that when the liquid storage bottle 3 is tilted during the atomization operation of the device, since the atomizing head 1 continuously sprays liquid through the negative pressure principle, the inside of the liquid storage bottle 3 will be turned into a continuous negative pressure chamber, so that the liquid in the liquid storage bottle 3 can not continuously flow out from the conduction hole 6, so the leakage function is basically not affected. During the atomization operation of the device normally (i.e., the liquid storage bottle 3 is in an upright state), if atomized particles fall into the conduction hole 6 and block the conduction hole 6, the liquid in the conduction hole 6 will quickly flow back into the liquid storage bottle 3 due to the reason that the negative pressure chamber is maintained inside the liquid storage bottle 3, and the conduction hole 6 is quickly restored to smooth flow.

[0041] For example, in a specific embodiment, Figure 4 As shown, the side wall of the liquid collecting tank 2 is provided with a first cylindrical wall 7 that is recessed inward, and the top side of the first cylindrical wall 7 is provided with a first top plate 9, and the first top plate 9 is provided with a conducting hole 6. In this way, on the one hand, the side wall of the liquid collecting tank 2 is used as the surrounding wall of the hole, which can save materials and facilitate one-piece injection molding, while also ensuring the stability of the conducting hole 6 structure.

[0042] In a preferred embodiment, the liquid collecting tank 2 and the atomizing head body 19 adopt a detachable connection method such as a bolt connection, which facilitates the structural design and installation of the atomizing head body 19, and the top edge of the liquid collecting tank 2 is tightly matched with the atomizing head body 19 to prevent the liquid in the liquid storage bottle 3 from leaking out from this connection. Furthermore, the side wall of the liquid collecting tank 2 is provided with a second cylindrical wall 8 that is recessed inward, and the top side of the second cylindrical wall 8 is provided with a second top plate 10. The liquid collecting tank 2 is fixedly connected to the atomizing head body 19 by bolts that pass through the second top plate 10 and then insert into the atomizing head body 19, and the top edge of the liquid collecting tank 2 is tightly matched with the atomizing head body 19. In this way, during installation, it is only necessary to make the liquid channel structure of the atomizing core 4 pass through the preset through hole on the bottom of the liquid collecting tank 2, and align the bolt holes on the second top plate 10 with the corresponding bolt holes of the atomizing head body 19. The installation of the liquid collecting tank 2 and the atomizing head body 19 can be completed by inserting and tightening the bolts, which is convenient and fast.

[0043] In a further preferred embodiment, Figure 2As shown, an atomizing chamber is provided within the atomizing head body 19, and a first atomizing cover 11 is provided within the atomizing chamber. The first atomizing cover 11 divides the atomizing chamber into an upper chamber 12 and a lower chamber 13 that are interconnected. The atomizing core 4 and the liquid collecting tank 2 are both located within the lower chamber 13. The first atomizing cover 11 is a conventional arrangement in the art, and its functions in reducing noise, reducing atomized particles at the mist outlet 18, and promoting the backflow of larger atomized particles will not be elaborated here.

[0044] Furthermore, a second atomizing cover 14 is provided in the lower cavity 13, and a first atomizing channel 15 is provided at intervals in the circumference of the first atomizing cover 11. The first atomizing channel 15 connects the upper cavity 12 and the lower cavity 13. The second atomizing cover 14 is located between the first atomizing cover 11 and the atomizing core 4, and a second atomizing channel 16 connected to the lower cavity 13 is formed between the second atomizing cover 14 and the first atomizing cover 11. In this embodiment, by providing the second atomizing cover 14, the atomized particles can be prompted to enter the first atomizing channel 15 and then continue to float out toward the mist outlet 18, thereby preventing a large amount of atomized particles from directly floating onto the first atomizing cover 11 and adhering to the first atomizing cover 11 and flowing back, thereby increasing the atomization amount; and the second atomizing channel 16 allows larger atomized particles that float into the cavity between the first atomizing cover 11 and the second atomizing cover 14 to flow back.

[0045] Furthermore, the atomizer head body 19 is provided with a gas channel 17 connected to the atomizer core 4. The gas channel 17 is located below the second atomizer cover 14. A support portion 143 is provided at the bottom of the second atomizer cover 14. In this embodiment, the support portion 143 is a vertical support plate, which abuts against the top side of the gas channel 17. The second atomizer cover 14 is fixed by the abutment between the support plate and the gas channel 17.

[0046] In a specific embodiment, Figure 5 As shown, the second atomizing cover 14 includes a cover plate 140 protruding toward the first atomizing cover 11 to facilitate the backflow of atomized particles. The cover plate 140 is provided with a vertical enclosure 141 along its periphery. A backflow gap is provided between the outer side of the enclosure 141 and the first atomizing cover 11. The backflow gap is a component of the second atomizing channel 16.

[0047] like Figure 3 As shown, the first atomizing cover 11 is provided with a plurality of pressing blocks 110 at intervals along the top circumference of the enclosing plate 141. The pressing blocks 110 cooperate with the supporting portion 143 to vertically fix the second atomizing cover 14 so that the second atomizing cover 14 does not move up and down.

[0048] The surrounding plate 141 is provided with a positioning groove 142 , and the first atomizing cover 11 is provided with a positioning plate 111 . The positioning plate 111 is inserted into the positioning groove 142 to fix the second atomizing cover 14 circumferentially so that the second atomizing cover 14 does not rotate.

[0049] In this specification, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0051] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A fragrance diffusion device comprising an atomizing head, a liquid storage bottle, and an air pump, wherein the atomizing head is connected to the liquid storage bottle, and characterized in that: The atomizer head includes an atomizer head body, an atomizer core, a liquid pipette, and a liquid collecting tank. The atomizer head body is connected to the liquid storage bottle, the atomizer core is connected to the atomizer head body, one end of the liquid pipette is connected to the atomizer core, and the other end is inserted into the liquid storage bottle. The air pump is connected to the atomizer core and is used to provide airflow to the atomizer core to atomize the liquid sucked into the atomizer core through the liquid pipette. The liquid collecting tank is connected to the bottom end of the atomizer head body, enclosing the atomizer core between the atomizer head body and the liquid collecting tank. The atomizer core and the liquid collecting tank extend into the bottle mouth of the liquid storage bottle. The liquid collecting tank is also provided with a liquid return hole connected to the liquid storage bottle.

2. The aroma diffusion device according to claim 1, characterized in that: The liquid return hole is formed by the gap between the bottom end of the atomizing core and the liquid collecting tank after passing through the liquid collecting tank; And / or, the liquid collecting tank is provided with a conducting hole connected to the liquid storage bottle, and the conducting hole is higher than the inner bottom of the liquid collecting tank.

3. A fragrance diffusion device according to claim 1 or 2, characterized in that: The bottom end of the atomizing core passes through the liquid collecting tank and then extends into the liquid storage bottle, and one end of the liquid suction tube is communicated with the bottom end of the atomizing core, and the other end is inserted into the liquid storage bottle.

4. The aroma diffusion device according to claim 2, characterized in that: The radial length of the gap ranges from 0.20 mm to 0.40 mm; And / or, the side wall of the liquid collecting tank is provided with a first columnar wall recessed inwardly, a first top plate is provided on the top side of the first columnar wall, and the first top plate is provided with the conducting hole; And / or, the diameter of the via hole ranges from 0.5 to 1.0 mm.

5. The aroma diffusion device according to claim 1, characterized in that: The liquid collecting tank is detachably connected to the atomizing head body, and the top edge of the liquid collecting tank is tightly matched with the atomizing head body.

6. The aroma diffusion device according to claim 5, characterized in that: The side wall of the liquid collecting tank is provided with a second cylindrical wall recessed inwardly, and the top side of the second cylindrical wall is provided with a second top plate. The liquid collecting tank is fixedly connected to the atomizing head body by a bolt that passes through the second top plate and is inserted into the atomizing head body, and the top edge of the liquid collecting tank is tightly fitted with the atomizing head body.

7. A fragrance diffusion device according to any one of claims 1 to 6, characterized in that: An atomizing chamber is provided in the atomizing head body, and a first atomizing cover is provided in the atomizing chamber. The first atomizing cover divides the atomizing chamber into an upper cavity and a lower cavity that are interconnected. The atomizing core and the liquid collecting tank are both located in the lower cavity.

8. The aroma diffusion device according to claim 7, characterized in that: A second atomizing cover is further provided in the lower cavity, and first atomizing channels are provided at circumferential intervals on the first atomizing cover, the first atomizing channels connecting the upper cavity and the lower cavity, the second atomizing cover is located between the first atomizing cover and the atomizing core, and a second atomizing channel communicating with the lower cavity is formed between the second atomizing cover and the first atomizing cover.

9. The aroma diffusion device according to claim 8, characterized in that: The atomizing head body is provided with a gas channel communicating with the atomizing core. The gas channel is located below the second atomizing cover. A supporting portion is provided at the bottom of the second atomizing cover. The supporting portion abuts against the top side of the gas channel.

10. The aroma diffusion device according to claim 9, characterized in that: The second atomizing cover includes a cover plate protruding toward the first atomizing cover, the cover plate is provided with a vertical enclosure along its circumference, and a backflow gap is provided between the outer side of the enclosure and the first atomizing cover; The first atomizing cover is provided with a plurality of pressure blocks at intervals along the circumferential edge of the top side of the enclosure, and the pressure blocks cooperate with the support portion to vertically fix the second atomizing cover; and / or, the enclosure is provided with a positioning groove, and the first atomizing cover is provided with a positioning plate, and the positioning plate is inserted into the positioning groove to circumferentially fix the second atomizing cover.

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