Fragrance diffusion equipment

Abstract

The utility model provides a fragrance diffusion equipment, the fragrance diffusion equipment includes the casing and set up essential oil bottle, atomizer, first conduit and air pump in the casing, in the essential oil bottle is provided with second conduit, the second conduit vertically set up in the bottom of essential oil bottle, essential oil bottle and air pump up and down set up, and the second conduit is provided with second conduit vertically set up in the bottom of essential oil bottle. The two ends of the first guide pipe are communicated with the air pump and the bottom opening of the second guide pipe respectively, the atomizer is arranged in the essential oil bottle, and the atomizer is arranged on the top opening of the second guide pipe. According to the fragrance diffusion equipment, the essential oil bottle and the air pump are arranged up and down, and the air pump and the second guide pipe at the bottom of the essential oil bottle are directly connected through the first guide pipe, so that the internal layout is greatly simplified, the arrangement of internal complex pipelines is reduced, and a more compact volume design is realized; and the high requirements of consumers on the portability and the aesthetic property of the product are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of fragrance, and particularly relates to a fragrance diffusion device. Background Art

[0002] Aroma diffusers, a beautiful and practical household item, primarily create a pleasant, fragrant atmosphere by releasing essential oil molecules into the air. The natural ingredients in essential oils not only offer health benefits such as mood regulation, stress relief, and improved sleep quality, but they also effectively purify the air, improving indoor environmental quality.

[0003] Currently, aromatherapy diffusers typically have their essential oil bottles and air pumps positioned one above the other. This requires the air pump to be connected to a specific connector on the essential oil bottle via an extended air tube to achieve effective atomization and diffusion of the essential oil. However, since the bottle opening is often located at the top of the diffuser, this layout requires the air tube to be long enough to bypass the diffuser's internal structure and ultimately reach the essential oil bottle connector at the top. This excessively long air tube poses significant technical challenges in the manufacture and application of aromatherapy diffusers.

[0004] First, the complex air pipe layout increases the probability of malfunction. Over time, the air pipe may become bent, aged, or clogged, leading to poor airflow and affecting the proper functioning of the entire diffuser. Furthermore, excessively long or improperly arranged air pipes can lead to leaks and blockages. Once a blockage or contamination occurs, it is often difficult for the user to clean it themselves. This not only shortens the product's lifespan but can also cause bacterial growth due to residual essential oils, impacting the user's health.

[0005] Secondly, the placement of the long air tube places higher demands on the internal structural design of the diffuser. The air tube's routing must be rationally planned within the limited space to ensure smooth gas transmission while avoiding interference with other components. This undoubtedly increases the complexity and difficulty of the design. Furthermore, to accommodate the longer air tube, the diffuser's outer shell often needs to be increased in size, which not only increases material consumption but also makes the product heavier.

[0006] Furthermore, from a production cost perspective, complex structures mean higher manufacturing costs and longer production cycles. In a highly competitive market, cost control is crucial for business survival and development. Therefore, how to reduce production costs through optimized structural design while ensuring product quality and performance is a key consideration for companies. Utility Model Content

[0007] The primary purpose of the present invention is to solve at least one of the above problems and provide a fragrance diffusion device.

[0008] In order to meet one of the purposes of the present utility model, a fragrance diffusion device is provided, comprising a housing and an essential oil bottle, an atomizer, a first conduit and an air pump arranged in the housing, wherein a second conduit is provided in the essential oil bottle, the second conduit is vertically arranged at the bottom of the essential oil bottle, the essential oil bottle and the air pump are arranged above each other, the two ends of the first conduit are respectively connected to the bottom openings of the air pump and the second conduit, the atomizer is arranged in the essential oil bottle, and the atomizer is arranged on the top opening of the second conduit.

[0009] Furthermore, a duckbill valve is provided in the first conduit, and the duckbill valve is arranged toward the second conduit.

[0010] Specifically, the first conduit and the duckbill valve are both made of soft rubber material, and the first conduit and the duckbill valve are integrally formed.

[0011] Furthermore, the atomizer includes an atomizing core and a liquid suction tube. The atomizing core is located on the top opening of the second conduit, and the atomizing core is communicated with the liquid suction tube.

[0012] Furthermore, the atomizer core includes a first joint and a second joint, an air outlet channel is formed in the first joint, the top opening is connected to the air outlet channel, and the top opening is covered with a waterproof and breathable membrane. A liquid outlet channel is formed in the second joint, one end of the liquid pipette is inserted into the liquid outlet channel, and the liquid outlet channel is arranged approximately perpendicular to the air outlet channel.

[0013] Specifically, a first nozzle is formed at the end of the air outlet channel away from the second conduit, and the diameter of the first nozzle is smaller than the diameter of the air outlet channel; a second nozzle is formed at the end of the liquid outlet channel away from the pipette, and the diameter of the second nozzle is smaller than the diameter of the liquid outlet channel, and the diameter of the first nozzle is smaller than the diameter of the second nozzle.

[0014] In one embodiment, the second conduit is integrally formed with the essential oil bottle.

[0015] In one embodiment, a flange is further provided in the housing, the essential oil bottle and the air pump are respectively arranged on the upper and lower sides of the flange, a third conduit is formed in the flange, and both ends of the third conduit are respectively inserted into the second conduit and the first conduit.

[0016] Specifically, the first pipe section of the third conduit is inserted into the second conduit, a plurality of sealing grooves are formed on the outer wall of the first pipe section, and sealing rings are installed in the sealing grooves, and the sealing rings are tightly fitted with the inner wall of the second conduit.

[0017] In one embodiment, a mist distributor is further provided in the shell, and the shell includes a main shell and a top cover. An opening is provided on the top of the main shell, and the top cover covers the opening. A mist outlet hole is provided on the top cover, and the air outlet channel is opposite to the mist outlet hole. The mist distributor is arranged between the air outlet channel and the mist outlet hole.

[0018] Compared with the existing technology, the present invention has many advantages, including but not limited to:

[0019] First, by placing the essential oil bottle and air pump vertically, and directly connecting the air pump to a second conduit at the bottom of the essential oil bottle via a first conduit, the aroma diffuser of this utility model greatly simplifies the internal layout and reduces the complexity of the internal piping. This not only effectively frees up internal space, but also enables a more compact design while maintaining or even improving functionality, thus meeting consumers' high demands for product portability and aesthetics.

[0020] Secondly, since the atomizer is set inside the essential oil bottle, the aromatherapy device does not need to be equipped with complex pipelines to guide the essential oil into the atomizer, reducing the risk of failure due to bending, aging or blockage of internal pipelines. It is also convenient for users to clean and maintain it, because the simplified flow path of the atomizer and essential oil makes cleaning easier, thereby extending the service life of the product.

[0021] Furthermore, from the perspective of the assembly process, building the atomizer into the essential oil bottle means that the two can be assembled directly as a whole during the manufacturing process. There is no need to install complex components such as the atomizer separately, nor is there any need to worry about whether the connection between these components is tight or there is a risk of leakage. This greatly simplifies the assembly process, improves production efficiency, and also reduces the failure rate caused by improper assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a three-dimensional schematic diagram of a fragrance diffusion device according to a typical embodiment of the present invention.

[0024] Figure 2 This is a schematic structural diagram of a fragrance diffusion device (main housing not shown) according to a typical embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the assembly of the essential oil bottle and the atomizer of the aroma diffusion device in a typical embodiment of the present invention.

[0026] Figure 4 This is a schematic structural diagram of the first conduit of the fragrance diffusion device in a typical embodiment of the present invention.

[0027] Figure 5 This is a schematic structural diagram of the mist distribution component of the fragrance diffusion device in a typical embodiment of the present utility model.

[0028] Figure 6 This is a schematic structural diagram of the flange of the aroma diffusion device in a typical embodiment of the present invention.

[0029] Figure 7 This is a schematic cross-sectional view of a fragrance diffusion device according to a typical embodiment of the present invention.

[0030] Figure 8 for Figure 7 Magnified view of part A.

[0031] Figure 9 for Figure 7 Magnified view of part B. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0034] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0035] The utility model provides a fragrance diffusing device. The essential oil bottle and the air pump of the fragrance diffusing device are arranged up and down, so as to save the installation space of the fragrance diffusing device and facilitate the miniaturization of the fragrance diffusing device.

[0036] In a typical embodiment of the present invention, Figure 1 、 Figure 2 and Figure 3 The aroma diffusion device 100 includes a housing 110, an essential oil bottle 120, an atomizer 130, a first conduit 140, an air pump 150 and a control unit (not shown). The essential oil bottle 120, the atomizer 130, the first conduit 140, the air pump 150 and the control unit are arranged in the housing 110, and the control unit is electrically connected to the air pump 150.

[0037] The essential oil bottle 120 is used to contain liquid, such as water or essential oil. In this embodiment, the essential oil bottle 120 is used to contain essential oil as an example to describe the present invention, but this should not be understood as limiting the present invention.

[0038] Combine Figure 3 The essential oil bottle 120 is provided with a second conduit 121, which is vertically arranged on the bottom wall 122 of the essential oil bottle 120. Figure 7 One of the openings of the second conduit 121 is opened on the bottom wall 122 of the essential oil bottle 120, and the opening is called the bottom opening 1211; Figure 9 The other opening of the second conduit 121 is called a top opening 1212, and the top opening 1212 is disposed toward the bottle mouth 123 of the essential oil bottle 120. The atomizer 130 is disposed within the essential oil bottle 120 and above the top opening 1212. In this embodiment, it is recommended that the essential oil bottle 120 and the second conduit 121 be integrally formed to facilitate the manufacture of the essential oil bottle 120 and the second conduit 121 and reduce production costs.

[0039] Combine Figure 2 and Figure 7The essential oil bottle 120 and the air pump 150 are arranged one above the other, that is, the essential oil bottle 120 is arranged above the air pump 150. The two ends of the first conduit 140 are connected to the air outlet 151 of the air pump 150 and the bottom opening 1211 of the second conduit 121, respectively, so that the air pump 150 is connected to the second conduit 121 through the first conduit 140.

[0040] Combine Figure 3 The atomizer 130 includes an atomizing core 131 and a liquid pipette 132. The atomizing core 131 is arranged on the top opening 1212 of the second guide tube 121. One end of the liquid pipette 132 is connected to the atomizing core 131, and the other end of the liquid pipette 132 extends to the bottom of the essential oil bottle 120, so that the liquid pipette 132 can absorb the essential oil contained in the essential oil bottle 120 into the atomizing core 131.

[0041] In this embodiment, the atomizing core 131 and the liquid pipette 132 are both installed in the essential oil bottle 120, so that the aroma diffusion device 100 does not need to free up installation space outside the essential oil bottle to arrange the atomizing core and the liquid pipette as in traditional aroma diffusion devices. It can be understood that the atomizing core 131 and the liquid pipette 132 of the present invention are arranged in the essential oil bottle 120, which saves the installation space of the aroma diffusion device 100, facilitates the miniaturization of the aroma diffusion device 100, and facilitates the arrangement of the atomizing core 131 and the liquid pipette 132, reduces the difficulty of installing the atomizing core 131 and the liquid pipette 132, and reduces the production cost of the aroma diffusion device 100.

[0042] When the aroma diffuser 100 is working, the control unit drives the air pump 150 to work, and the air pump 150 generates an airflow, which is blown to the atomizer core 131 in sequence through the air outlet 151 of the air pump 150, the first conduit 140, and the second conduit 121. The atomizer core 131 forms a negative pressure under the action of the airflow, and the essential oil is sucked from the bottom of the essential oil bottle 120 through the pipette 132 using the siphon principle. When the essential oil is sucked into the atomizer core 131, the high-pressure airflow output by the air pump 150 hits the essential oil, and the essential oil is broken into tiny essential oil particles under the action of the high-pressure airflow. These tiny essential oil particles then diffuse outward through the bottle mouth 123 of the essential oil bottle 120 and the mist outlet 113 of the housing 110, and further diffuse into the space where the aroma diffuser 100 is located through air circulation.

[0043] In this embodiment, combined with Figure 4 and Figure 8A duckbill valve 141 is also provided in the first conduit 140. The duckbill valve 141 is arranged toward the second conduit 121. It can be understood that the duckbill valve 141 is a one-way valve that conducts in a one-way direction toward the second conduit 121. Because the duckbill valve 141 is arranged toward the second conduit 121, the airflow output by the air pump 150 can open the duckbill valve 141, allowing the airflow to flow into the second conduit 121 through the duckbill valve 141. When liquid or gas flows from the second conduit 121 toward the air pump 150, the duckbill valve 141 is in a tightly closed state, preventing the liquid or gas from flowing from the duckbill valve 141 to the air pump 150. In this embodiment, the duckbill valve 141 is integrally formed with the first conduit 140, and the first conduit 140 and the duckbill valve 141 are made of a soft rubber material, such as a rubber material or a polymer material.

[0044] It is understood that if essential oil accidentally flows into the first conduit 140 through the second conduit 121, the duckbill valve 141 provided in the first conduit 140 will prevent the essential oil from flowing toward the air pump 150, thereby preventing the essential oil from damaging the air pump 150. Furthermore, when the air pump 150 is operating, the airflow output by the air pump 150 can blow the essential oil flowing to the duckbill valve 141 out of the first conduit 140 and the second conduit 121, atomizing the essential oil flowing to the duckbill valve 141. In other words, the essential oil in the duckbill valve 141 is cleared, allowing the aromatherapy device 100 to operate properly.

[0045] In this embodiment, combined with Figure 9 The atomizing core 131 includes a first connector 133 and a second connector 134, which are interconnected. An air outlet channel 135 is formed in the first connector 133. The first connector 133 is located above the top opening 1212 of the second conduit 121, allowing the air outlet channel 135 to communicate with the second conduit 121 through the top opening 1212. A liquid outlet channel 136 is formed in the second connector 134. The liquid outlet channel 136 communicates with the liquid pipette 132, allowing the liquid pipette 132 to draw essential oil from the bottom of the essential oil bottle 120 into the liquid outlet channel 136.

[0046] In one embodiment, combined Figure 9 The top opening 1212 of the second conduit 121 is covered with a waterproof breathable membrane 124, so that even if the essential oil sucked out from the liquid outlet channel 136 drips onto the top opening 1212, it cannot enter the second conduit 121 due to the protective effect of the waterproof breathable membrane 124, thereby preventing the essential oil from clogging the second conduit 121 and the first conduit 140 and damaging the air pump 150.

[0047] In a typical embodiment of the present invention, the air outlet channel 135 is disposed vertically, and the liquid outlet channel 136 is disposed approximately transversely relative to the air outlet channel 135. In other words, the air outlet channel 135 and the liquid outlet channel 136 are disposed approximately perpendicularly. When the gas output by the air pump 150 flows out through the air outlet channel 135, it also draws out the gas in the liquid outlet channel 136, causing the essential oil at the bottom of the essential oil bottle 120 to be drawn into the liquid pipe 132, that is, the essential oil is back-drawn into the liquid outlet channel 136. The essential oil then flows out through the liquid outlet channel 136, while the airflow from the air outlet channel 135 simultaneously breaks up the essential oil into essential oil particles, thereby forming essential oil mist. The essential oil mist is then discharged from the aroma diffuser 100 through the bottle mouth 123 of the essential oil bottle 120 and the mist outlet 113 of the housing 110, thereby diffusing the essential oil mist and improving the external air.

[0048] In a further embodiment, a nozzle (referred to as a first nozzle 1351) is formed at the end of the air outlet channel 135 away from the second conduit 121. The diameter of the first nozzle 1351 is smaller than that of the air outlet channel 135. The first nozzle 1351 can pressurize the airflow flowing into the first nozzle 1351 to increase the flow rate of the airflow, thereby facilitating the airflow to break up the essential oil ejected from the liquid outlet channel 136, forming an essential oil mist. In this embodiment, it is recommended that the diameter of the first nozzle 1351 be less than 1 / 4 of the diameter of the air outlet channel 135, but this should not be construed as a limitation of the present invention.

[0049] A nozzle (referred to as a second nozzle 1361) is formed at the end of the liquid outlet channel 136, distal from the liquid pipe 132. The diameter of the second nozzle 1361 is smaller than that of the liquid outlet channel 136. This second nozzle 1361 pre-accelerates the essential oil, allowing the airflow from the first nozzle 1351 to break up the essential oil, forming an essential oil mist. In this embodiment, it is recommended that the diameter of the second nozzle 1361 be less than one-quarter the diameter of the liquid outlet channel 136, but this should not be construed as a limitation of the present invention.

[0050] In one embodiment, the caliber of the first nozzle 1351 is smaller than that of the second nozzle 1361 to enhance the pressure and flow rate of the airflow output through the first nozzle 1351, so that the airflow output by the first nozzle 1351 can further crush the essential oil output by the second nozzle 1361, greatly promoting further crushing of the essential oil, thereby further refining the essential oil mist.

[0051] In one embodiment, combined Figure 6A flange 160 is further provided in the housing 110. The flange 160 is arranged between the essential oil bottle 120 and the air pump 150. A third conduit is provided in the flange 160. The third conduit passes through the flange 160. The third conduit is divided into a first pipe section 1611 and a second pipe section 1612 by the flange 160. The first pipe section 1611 is inserted into the second conduit 121, and the second pipe section 1612 is inserted into the first conduit 140, so that the first conduit 140 and the second conduit 121 are connected through the third conduit.

[0052] In a further embodiment, in combination Figure 6 and Figure 7 The outer wall of the first tube section 1611 is formed with a plurality of sealing grooves 162, each of which is provided with a sealing ring 163. When the first tube section 1611 is inserted into the second conduit 121, the sealing ring 163 forms a tight fit or interference fit with the inner wall of the second conduit 121, preventing air leakage at the joint between the first tube section 1611 and the second conduit 121, thereby improving the airtightness of the aroma diffuser 100. Furthermore, when the essential oil bottle 120 drives the second conduit 121 to rotate relative to the flange 160, the sealing ring 163 reduces friction between the first tube section 1611 and the second conduit 121, preventing cracking between the first tube section 1611 and the second conduit 121, and protecting the second conduit 121 and the first tube section 1611.

[0053] In a typical embodiment of the present invention, Figure 1 and Figure 7 The housing 110 includes a main housing 111 and a top cover 112. The main housing 111 is a columnar structure with an opening at the top. The top cover 112 covers the opening of the main housing 111 to form the housing 110. The top cover 112 defines a mist outlet 113. The essential oil mist atomized by the atomizing core 131 flows out of the bottle opening 123 of the essential oil bottle 120 and then out of the aroma diffuser 100 through the mist outlet 113 in the top cover 112.

[0054] In one embodiment, combined Figure 7 and Figure 9 , the air outlet channel 135 of the atomizing core 131 is directly opposite to the mist outlet hole 113. Figure 5 and Figure 7A mist separator 170 is further provided in the housing 110. The mist separator 170 is hung upside down on the top cover 112 and is arranged between the air outlet channel 135 and the mist outlet hole 113, so that the essential oil mist cannot flow directly to the mist outlet hole 113. The essential oil mist needs to bypass the side of the mist separator 170 to increase the flow path of the essential oil mist in the fragrance diffusion device 100, reduce the flow rate of the essential oil mist, reduce noise, and improve the user experience.

[0055] In this embodiment, combined with Figure 5 The mist separator 170 includes a mist separator plate 171. The area of the mist separator plate 171 is smaller than the area of the bottle mouth 123 of the essential oil bottle 120. The mist separator plate 171 is disposed at the bottle mouth 123 of the essential oil bottle 120. When the essential oil mist flows to the mouth of the essential oil bottle 120, the essential oil mist cannot flow directly to the mist outlet 113 due to the obstruction of the mist separator plate 171. Instead, the essential oil mist needs to flow around the side of the mist separator plate 171, thereby increasing the flow path of the essential oil mist in the aroma diffuser 100, reducing the flow rate of the essential oil mist, reducing noise, and improving the user experience.

[0056] In one embodiment, the housing 110 further includes a power source, such as a battery, for powering the aroma diffuser 100. Specifically, the battery is electrically connected to the control unit. Alternatively, the aroma diffuser 100 is electrically connected to an external power source via a cable, and the external power source is used to power the aroma diffuser 100.

[0057] In summary, the essential oil bottle and the air pump of the aroma diffusion device of the present invention are arranged vertically, and the atomizer is arranged in the essential oil bottle, so that the various components of the aroma diffusion device can be reasonably arranged, which facilitates the miniaturization of the aroma diffusion device.

[0058] The above description is merely a preferred embodiment of the present invention and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the present invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the above-mentioned utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) other technical features with similar functions in the present invention.

[0059] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

Claims

1. A fragrance diffusion device, characterized in that: The invention comprises a shell, an essential oil bottle arranged in the shell, an atomizer, a first conduit and an air pump. The essential oil bottle is provided with a second conduit, the second conduit is vertically arranged at the bottom of the essential oil bottle, the essential oil bottle and the air pump are arranged up and down, the two ends of the first conduit are respectively connected to the air pump and the bottom opening of the second conduit, the atomizer is arranged in the essential oil bottle, and the atomizer is arranged on the top opening of the second conduit.

2. The aroma diffusion device according to claim 1, wherein A duckbill valve is provided in the first conduit, and the duckbill valve is arranged toward the second conduit.

3. The aroma diffusion device according to claim 2, wherein: The first conduit and the duckbill valve are both made of soft rubber material, and the first conduit and the duckbill valve are integrally formed.

4. The aroma diffusion device according to claim 1, wherein The atomizer includes an atomizing core and a liquid suction tube. The atomizing core is located on the top opening of the second conduit, and the atomizing core is communicated with the liquid suction tube.

5. The aroma diffusion device according to claim 4, characterized in that The atomizer core includes a first joint and a second joint. An air outlet channel is formed in the first joint. The top opening is connected to the air outlet channel. The top opening is covered with a waterproof and breathable membrane. A liquid outlet channel is formed in the second joint. One end of the liquid pipette is inserted into the liquid outlet channel. The liquid outlet channel and the air outlet channel are arranged approximately perpendicular to each other.

6. The aroma diffusion device according to claim 5, characterized in that A first nozzle is formed at one end of the air outlet channel away from the second conduit, and the caliber of the first nozzle is smaller than the caliber of the air outlet channel; a second nozzle is formed at one end of the liquid outlet channel away from the pipette, and the caliber of the second nozzle is smaller than the caliber of the liquid outlet channel, and the caliber of the first nozzle is smaller than the caliber of the second nozzle.

7. The aroma diffusion device according to claim 1, wherein: The second conduit is integrally formed with the essential oil bottle.

8. The aroma diffusion device according to claim 1, wherein A flange is further provided in the shell, and the essential oil bottle and the air pump are respectively arranged on the upper and lower sides of the flange. A third conduit is formed in the flange, and both ends of the third conduit are respectively inserted into the second conduit and the first conduit.

9. The aroma diffusion device according to claim 8, characterized in that The first pipe section of the third pipe is inserted into the second pipe. A plurality of sealing grooves are formed on the outer wall of the first pipe section. Sealing rings are installed in the sealing grooves. The sealing rings are tightly fitted with the inner wall of the second pipe.

10. The aroma diffusion device according to claim 5, wherein: A mist distributor is further provided in the shell, and the shell includes a main shell and a top cover. An opening is provided on the top of the main shell, and the top cover covers the opening. A mist outlet hole is provided on the top cover, and the air outlet channel is opposite to the mist outlet hole. The mist distributor is arranged between the air outlet channel and the mist outlet hole.

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