A pure essential oil atomizing device

Abstract

The present application relates to the technical field of atomizer, and discloses a pure essential oil atomization device, which comprises a shell, a piezoelectric fan and an atomization assembly. A partition plate is arranged in the shell, and the shell is divided into an air duct and a mounting cavity by the partition plate. An air inlet and an air outlet which are communicated with the air duct are arranged on the shell at intervals, and a mist outlet is arranged on the partition plate and communicated with the mounting cavity and the air duct. The piezoelectric fan is connected with the shell and arranged at the air inlet, and the air outlet end of the piezoelectric fan faces the inside of the air duct. The atomization assembly is arranged in the mounting cavity and located at the mist outlet. The piezoelectric fan is arranged to drive air to flow in the air duct, so that higher air pressure can be generated, and the required installation space of the piezoelectric fan is smaller, thereby reducing the volume of the pure essential oil atomization device. Moreover, the piezoelectric fan is arranged at the air inlet, so that the mist will not pass through the piezoelectric fan, thereby avoiding that the mist is condensed on the piezoelectric fan after long-term use, and ensuring the air pressure of the air flow output by the piezoelectric fan.

Description

Technical Field

[0001] This invention relates to the field of atomizer technology, and in particular to a pure essential oil atomizing device. Background Technology

[0002] Essential oil atomizing devices use high-frequency vibration to atomize plant essential oils into micron-sized mist, which is then dispersed into the air to relieve user stress, improve air quality, and help alleviate user symptoms. They have advantages such as safe use, controllable ingredient release, and portability.

[0003] To achieve diffusion of essential oil mist, existing essential oil atomizing devices typically use a turbine fan to blow out the generated mist. For example, Chinese patent application CN223525286U discloses an aromatherapy essential oil fumigation device, including a base chamber, a detachable connecting chamber movably connected to the upper end of the base chamber, and an upper chamber movably connected to the end of the connecting chamber away from the base chamber. An atomizer is fixedly installed inside the connecting chamber, and a guide fan is fixedly connected inside the upper chamber. A ring of ventilation inlets is formed on the outer wall of the upper chamber. Through the action of the guide fan, the essential oil is fully atomized by the atomizer, and the gas is driven by the guide fan to flow towards the steam outlet. However, the existing solution has the following problems: Firstly, the integration is low. The turbine fan usually occupies a large amount of space inside the atomizing device, resulting in an overly large overall structure of the atomizing device.

[0004] Secondly, existing solutions typically place the turbine fan in the mist diffusion path, making it easy for mist to condense and adhere to the fan. Furthermore, there are usually structures downstream of the turbine fan (such as the outer wall of the upper chamber mentioned above) that obstruct airflow. While the turbine fan has adequate airflow in free space, its air pressure is insufficient in a confined space. If resistance exists in the airflow duct, the air pressure will significantly decrease, causing the mist to be unable to be completely expelled, resulting in some condensation and reduced essential oil utilization. This also leads to internal contamination of the atomizing device. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the structural design of essential oil atomizing devices in the prior art is inadequate, resulting in excessive size and severe attenuation of internal air pressure.

[0006] To solve the above-mentioned technical problems, the present invention provides a pure essential oil atomizing device, comprising: The housing has a partition inside, which divides the housing into an air duct and an installation cavity. The housing has an air inlet and an air outlet that communicate with the air duct. The partition has a mist outlet that communicates with the installation cavity and the air duct. A piezoelectric fan is connected to the housing and located at the air inlet, with the air outlet of the piezoelectric fan facing into the air duct. The atomizing component is disposed within the mounting cavity and located at the mist outlet.

[0007] According to one embodiment of the present invention, the device further includes a circuit board. The partition is spaced apart from the inner wall of the housing on the side near the air inlet, forming a connecting channel between the partition and the inner wall of the housing. The connecting channel communicates the mounting cavity and the air duct. The circuit board is disposed within the mounting cavity, and at least a portion of the piezoelectric fan is located within the connecting channel. The atomizing component and the piezoelectric fan are respectively connected to the circuit board.

[0008] According to one embodiment of the present invention, a heat sink is further included. The heat sink is disposed in the connection channel. The heat sink has a contact portion and a heat dissipation portion. The contact portion is located in the mounting cavity and contacts the circuit board. The heat dissipation portion is located in the air duct so that the air blown by the piezoelectric fan passes through the surface of the heat dissipation portion.

[0009] According to one embodiment of the present invention, the heat dissipation part is plate-shaped and has at least one ventilation hole.

[0010] According to one embodiment of the present invention, the heat dissipation part is provided with at least one heat dissipation fin.

[0011] According to one embodiment of the present invention, the air outlet end is provided with at least one air outlet hole, the heat dissipation part is disposed opposite to the air outlet end, and at least one ventilation hole is opposite to at least one air outlet hole.

[0012] According to one embodiment of the present invention, the piezoelectric fan includes a mounting shell, a piezoelectric element, and a vibrating diaphragm. The mounting shell is connected to the housing. One end of the mounting shell is provided with an air inlet, and the other end is open. The vibrating diaphragm is disposed inside the mounting shell and connected to the mounting shell. The piezoelectric element is disposed on the vibrating diaphragm. The heat dissipation part blocks the open end of the mounting shell to form the wall of the piezoelectric fan.

[0013] According to one embodiment of the present invention, the air duct extends along the outer periphery of the mounting cavity, and the air duct has at least one bending region between the air inlet and the air outlet. In the direction from the air inlet to the air outlet, the bending region extends along an arc away from the sidewall of the mounting cavity.

[0014] According to one embodiment of the present invention, the housing includes a base and a cover, the base is provided with a groove, the cover is connected to the base and the cover blocks the opening of the groove, the air inlet is provided on the cover and the air outlet is provided on the base.

[0015] According to one embodiment of the present invention, the partition is disposed between the bottom wall of the groove and the cover, and divides the groove into a first space and a second space, wherein the first space is connected to the air outlet and the second space is connected to the opening of the groove; The partition has a protruding post on the side facing the opening of the groove. The protruding post has a central channel that passes through the partition along the axial direction of the protruding post and connects to the first space. The central channel and the first space constitute the air duct.

[0016] The pure essential oil atomizing device of this invention, by using a piezoelectric fan to drive airflow within an air duct, generates higher air pressure, enabling the generated mist to be blown out completely and efficiently, preventing stagnation within the air duct. Furthermore, the piezoelectric fan requires less installation space, thus reducing the size of the pure essential oil atomizing device. In addition, placing the atomizing component within the mounting cavity and providing a separate air duct reduces resistance along the airflow path, ensuring air pressure and improving the mist diffusion effect. Moreover, by placing the piezoelectric fan at the air inlet, the mist does not pass through the piezoelectric fan during its generation and exit from the pure essential oil atomizing device, preventing mist condensation on the piezoelectric fan after prolonged use, thereby ensuring the air pressure of the airflow output by the piezoelectric fan. Attached Figure Description

[0017] Figure 1 This is an exploded view of a portion of the structure of the pure essential oil atomizing device provided in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the cover and the piezoelectric fan provided in an embodiment of the present invention.

[0019] Figure 3 This is one of the cross-sectional views of a portion of the structure of the pure essential oil atomizing device provided in an embodiment of the present invention.

[0020] Figure 4 This is a second cross-sectional view of a portion of the structure of the pure essential oil atomizing device provided in an embodiment of the present invention, in which the atomizing components are not shown.

[0021] Figure 5 This is a schematic diagram of the heat dissipation unit provided in an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram showing the positions of the heat dissipation unit and the piezoelectric fan provided in an embodiment of the present invention.

[0023] Figure 7 This is one of the schematic diagrams of the operation of a piezoelectric fan provided in the embodiments of the present invention.

[0024] Figure 8 This is the second schematic diagram of the operation of the piezoelectric fan provided in the embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the internal structure of the housing provided in an embodiment of the present invention.

[0026] Figure 10 This is the third schematic diagram of the operation of the piezoelectric fan provided in the embodiment of the present invention.

[0027] Figure label: 110. Housing; 111. Air duct; 112. Curved surface; 113. Mounting cavity; 114. Air inlet; 115. Air outlet; 116. Partition; 1161. Mist outlet; 1162. Protruding post; 1163. Fixing rib; 1164. Fixing groove; 1165. Intermediate channel; 117. Base; 118. Cover; 119. Connecting channel; 120. Piezoelectric fan; 121. Mounting housing; 122. Piezoelectric element; 123. Vibrating diaphragm; 124. Air outlet; 125. Air inlet; 126. Jet chamber; 127. Transition channel; 128. Air inlet channel; 130. Atomizing component; 131. Atomizing plate; 132. Oil-wicking cotton; 140. Circuit board; 141. Heating element; 150. Heat sink; 151. Contact part; 152. Heat sink; 1521. First sub-board; 1522. Second sub-board; 153. Ventilation hole; 154. Heat sink fin. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In the description of the embodiments of the present invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] like Figure 1 and Figure 3 As shown in the figure, an embodiment of the present invention provides a pure essential oil atomizing device, which can be used for atomizing pure essential oils without the addition of water dilution. The pure essential oil atomizing device includes a housing 110, a piezoelectric fan 120, and an atomizing component 130.

[0033] Specifically, the housing 110 has a partition 116 that divides the housing 110 into an air duct 111 and a mounting cavity 113. The housing 110 has an air inlet 114 and an air outlet 115 that communicate with the air duct 111. The partition 116 has a mist outlet 1161 that communicates with the mounting cavity 113 and the air duct 111, and the mist outlet 1161 is positioned close to the air outlet 115. A piezoelectric fan 120 is connected to the housing 110 and located at the air inlet 114, with its outlet facing into the air duct 111. The atomizing assembly 130 is located within the mounting cavity 113 and at the mist outlet 1161.

[0034] The housing 110 has an internal cavity, within which a partition 116 is located. The partition 116 divides the cavity into an air duct 111 and a mounting cavity 113. The air duct 111 is connected to the air inlet 114 and air outlet 115 on the housing 110, respectively, so that the air inlet 114, air duct 111, and air outlet 115 constitute the air path within the pure essential oil atomizing device. The air inlet 114 and air outlet 115 are spaced apart to reduce mutual airflow interference at the air inlet 114 and air outlet 115. There may be one air inlet 114, or two or more. The atomizing component 130 atomizes essential oils into micron-sized mist. A mist outlet 1161 is provided on the partition 116, connecting the mounting cavity 113 and the air duct 111. When airflow passes through the air duct 111, a negative pressure is created within the air duct 111, causing the mist to enter the air duct 111 from the mist outlet 1161, and then diffuse out from the air outlet 115. Positioning the mist outlet 1161 close to the air outlet 115 reduces the time the mist spends within the air duct 111, thus preventing condensation within the air duct 111.

[0035] A piezoelectric fan 120 is positioned at the air inlet 114, with its outlet facing into the air duct 111. The piezoelectric fan 120 drives air from the air inlet 114 into the air duct 111, causing the mist to diffuse through the air duct 111 and the air outlet 115. By placing the atomizing component 130 within the mounting cavity 113 and providing a separate air duct 111, resistance in the airflow path is reduced, ensuring air pressure and thus improving the mist diffusion effect. Furthermore, by positioning the mist outlet 1161 close to the air outlet 115 and placing the piezoelectric fan 120 at the air inlet 114, the mist does not pass through the piezoelectric fan 120 during its generation and exit from the pure essential oil atomizing device. This prevents mist condensation on the piezoelectric fan 120, ensuring sufficient air pressure for the airflow output by the piezoelectric fan 120.

[0036] The mist outlet 1161 can be funnel-shaped, with the larger diameter end located on the inner wall of the air duct 111 to facilitate the flow of mist into the air duct 111. The piezoelectric fan 120 drives air into the air duct 111 through the air inlet 114, creating an airflow. When the airflow passes through the mist outlet 1161, a negative pressure is created at the outlet 1161, thereby drawing out the mist generated by the atomizing component 130 and blowing it towards the air outlet 115. Natural diffusion of the mist is not required; it is passively transported to the air outlet 115, avoiding the time the mist remains inside the pure essential oil atomizing device and preventing condensation and accumulation. Because a partition 116 separates the air outlet duct 111 from the mounting cavity 113, airflow is prevented from directly passing through the atomizing component 130, thus avoiding interference with the atomization process and ensuring the mist output effect of the pure essential oil atomizing device.

[0037] Furthermore, compared to existing technologies that use turbine fans to diffuse the mist, this application uses a piezoelectric fan 120 to drive airflow. The thickness of the piezoelectric fan 120 can be between 3mm and 10mm, requiring less installation space and thus reducing the size of the pure essential oil atomizing device. Moreover, the piezoelectric fan 120 has no electromagnetic motor, featuring high static pressure and low noise. Its operating noise can be reduced to between 20 dBA and 35 dBA, with a start-stop response time of less than 10 ms, eliminating electromagnetic and mechanical noise at the source and improving the user experience. This ensures the air pressure within the air duct 111, allowing the generated mist to be completely and efficiently blown out, preventing stagnation inside the air duct 111.

[0038] like Figure 3 and Figure 4As shown, according to some embodiments of the present invention, the air duct 111 extends along the outer periphery of the mounting cavity 113. The air duct 111 has at least one bending region between the air inlet 114 and the air outlet 115. In the direction from the air inlet 114 to the air outlet 115, the side wall away from the mounting cavity 113 of the bending region extends along an arc and forms an arc surface 112, so that the inner wall of the side of the air duct 111 away from the mounting cavity 113 transitions smoothly to reduce wind pressure loss.

[0039] According to some embodiments of the present invention, the pure essential oil atomizing device further includes a circuit board 140, and a partition 116 is spaced apart from the inner wall of the housing 110 on the side near the air inlet 114, so that a connecting channel 119 is formed between the partition 116 and the inner wall of the housing 110. The connecting channel 119 connects the mounting cavity 113 and the air duct 111. The circuit board 140 is disposed in the mounting cavity 113. The atomizing component 130 and the piezoelectric fan 120 are respectively connected to the circuit board 140. At least a portion of the piezoelectric fan 120 is located in the connecting channel to be connected to the circuit board 140.

[0040] The drive circuits for both the atomizing component 130 and the piezoelectric fan 120 are integrated onto the circuit board 140. The coordinated control of the atomizing component and the piezoelectric fan 120 allows for synchronous start-stop and multi-mode switching, achieving internal linkage protection and improving the reliability and user experience of the pure essential oil atomizing device. The circuit board 140 drives the atomizing component 130 and the piezoelectric fan 120 to atomize the essential oil and create airflow within the air duct 111. By integrating the drive circuits for the atomizing component 130 and the piezoelectric fan 120 onto the circuit board 140 and placing the circuit board 140 within the mounting cavity 113 and the connecting channel 119, the integration level of the pure essential oil atomizing device is improved, and its size is reduced.

[0041] like Figure 3 and Figure 4As shown in the figure, the arrows indicate the direction of airflow. According to some embodiments of the present invention, the pure essential oil atomizing device further includes a heat sink 150, which is disposed within the connecting channel. The heat sink 150 has a contact portion 151 and a heat dissipation portion 152. The contact portion 151 is located within the mounting cavity 113 and contacts the circuit board 140. The heat dissipation portion 152 is located within the air duct 111, allowing the airflow from the piezoelectric fan 120 to pass over the surface through which the heat dissipation portion 152 passes. Specifically, the contact portion 151 can be plate-shaped, and the heat sink 150 is in contact with the heating element 141 on the circuit board 140 to dissipate the heat generated by the heating element 141. The heat dissipation portion 152 is disposed within the air duct 111 to carry away the heat from the heat sink 150 through the airflow generated by the piezoelectric fan 120. The piezoelectric fan 120 not only drives airflow within the air duct 111 to blow out the mist from the air outlet 115, but also improves the heat dissipation efficiency of the circuit board 140. The heat sink 152 can be positioned opposite to the air outlet of the piezoelectric fan 120, or the heat sink 152 can form part of the air outlet of the piezoelectric fan 120, so that the air blown out by the piezoelectric fan 120 can immediately contact the heat sink 152, ensuring that the airflow through the heat sink 152 has the maximum air volume and the minimum air pressure loss, thereby improving heat dissipation efficiency. The heat sink 150 can be made of aluminum alloy, or the heat sink 150 can be made of copper alloy.

[0042] According to some embodiments of the present invention, the heat dissipation part 152 is plate-shaped and has at least one ventilation hole 153. This increases the contact area between the heat dissipation part 152 and the airflow, improving heat dissipation efficiency. Furthermore, the ventilation hole 153 reduces resistance to airflow. The cross-section of the ventilation hole 153 along its axial direction can be rectangular, trapezoidal, or honeycomb-shaped to increase the surface area of ​​the inner wall of the ventilation hole 153 and improve heat exchange efficiency. Figure 5 As shown in the figure, the arrows indicate the direction of airflow. In some embodiments, the heat dissipation unit 152 includes a first sub-plate 1521 and a second sub-plate 1522. The second sub-plate 1522 is connected to one side of the first sub-plate 1521, and the second sub-plate 1522 is not parallel to the first sub-plate 1521. The surface of the first sub-plate 1521 faces the air outlet of the piezoelectric fan 120. Further, the second sub-plate 1522 and the first sub-plate 1521 can be arranged perpendicular to each other. The first sub-plate 1521 and the second sub-plate 1522 are respectively provided with ventilation holes 153, wherein the number of ventilation holes 153 on the first sub-plate 1521 is greater than or equal to the number of air outlet holes 124 of the piezoelectric fan 120.

[0043] like Figure 6As shown in the figure, the arrows indicate the direction of airflow. In some embodiments, the heat dissipation part 152 is provided with at least one heat dissipation rib 154 to increase the surface area of ​​the heat dissipation part 152 and improve the heat dissipation efficiency. Specifically, the heat dissipation part 152 is plate-shaped and extends along the direction of airflow in the air duct 111. The plate surface of the heat dissipation part 152 is parallel to the direction of airflow. One side of the plate surface of the heat dissipation part 152 is provided with heat dissipation ribs 154. There can be multiple heat dissipation ribs 154, which are distributed in a matrix.

[0044] According to some embodiments of the present invention, a piezoelectric fan 120 includes a mounting shell 121, a piezoelectric element 122, and a vibrating diaphragm 123. The mounting shell 121 is connected to a housing 110, for example, by fasteners such as screws. The mounting shell 121 has a hollow structure, with one end forming an air inlet and having an air inlet hole 125; the other end forming an air outlet and being open. A heat dissipation section 152 blocks the open end of the mounting shell 121, forming the wall of the piezoelectric fan 120 and separating the interior of the mounting shell 121 from the exterior. By blocking the mounting shell 121 of the piezoelectric fan 120 with the heat dissipation section 152, the heat dissipation section 152 forms part of the air outlet of the piezoelectric fan 120. The airflow generated by the piezoelectric fan 120 immediately contacts the heat dissipation section 152 and carries away heat, reducing wind resistance and improving the utilization rate of the airflow generated by the piezoelectric fan 120.

[0045] A vibrating diaphragm 123 is disposed within and connected to the mounting housing 121. A piezoelectric element 122 is disposed on the vibrating diaphragm 123 and connected to the circuit board 140. The piezoelectric element 122 can vibrate at high speed under a specific frequency AC drive signal, thereby causing the diaphragm to periodically bend and deform, driving air to enter the mounting housing 121 through the air inlet 125 and flow out through the ventilation hole 153 on the heat dissipation section 152. Further, as... Figure 7 and Figure 8 As shown, the diaphragm 123 is connected to the mounting housing 121, dividing the interior of the mounting housing 121 into a transition channel 127 and an air intake channel 128. The diaphragm 123 has a through hole connecting the transition channel 127 and the air intake channel 128. The transition channel 127 communicates with the air intake port 125, and the air intake channel 128 communicates with the ventilation hole 153 on the heat dissipation section 152. A jet cavity 126 is formed between the piezoelectric element 122 and the diaphragm 123, and the diaphragm 123 has at least one connecting hole connecting the jet cavity 126 and the air intake channel 128. During operation, the piezoelectric element 122 vibrates at high speed under the drive of an AC drive signal, such as... Figure 7As shown in the figure, the arrows indicate the direction of gas flow. When the piezoelectric element 122 bends upward, the area on the vibrating diaphragm 123 corresponding to the jet cavity 126 simultaneously bends downward. The volume of the jet cavity 126 increases, the pressure decreases, and external gas enters the transition channel 127 from the air inlet 125, and then enters the jet cavity 126 through the air inlet and the connecting hole. Figure 8 As shown in the figure, the arrows indicate the direction of gas flow. When the piezoelectric element 122 bends downward, the area on the vibrating diaphragm 123 corresponding to the jet cavity 126 bends upward at the same time. The volume of the jet cavity 126 decreases and the pressure increases. The gas in the jet cavity 126 is ejected from the jet hole to form a jet and is discharged from the ventilation hole 153.

[0046] like Figure 10 As shown, according to some embodiments of the present invention, the piezoelectric fan 120 has at least one air outlet 124 at its air outlet end, and the heat dissipation part 152 is disposed opposite to the air outlet end, with at least one ventilation hole 153 opposite to the at least one air outlet 124. Specifically, the heat dissipation part 152 is disposed independently of the piezoelectric fan 120. The piezoelectric fan 120 includes a mounting shell 121, which is a hollow structure. One end of the mounting shell 121 forms an air inlet end and is provided with an air inlet 125; the other end of the mounting shell 121 forms an air outlet end and is provided with an air outlet 124. The internal structure of the piezoelectric fan 120 can refer to the structure described above, and will not be repeated here. The heat dissipation part 152 is disposed in the air duct 111 and is disposed opposite to the air outlet end of the piezoelectric fan 120, so that the air blown out by the piezoelectric fan 120 can immediately contact the heat dissipation part 152, thereby improving the heat dissipation efficiency. In this configuration, at least one ventilation hole 153 is opposite to at least one air outlet 124, such that the orthographic projection of the air outlet 124 on the heat dissipation part 152 overlaps with the ventilation hole 153, or is located within the ventilation hole 153, in order to reduce airflow resistance.

[0047] like Figure 1 and Figure 3 As shown, according to some embodiments of the present invention, the housing 110 includes a base 117 and a cover 118. The base 117 has a groove, and a partition 116 is disposed in the groove. The cover 118 is connected to the base 117, and the cover 118 seals the opening of the groove to separate the groove from the outside. An air inlet 114 is disposed on the cover 118, and an air outlet 115 is disposed on the base 117. A piezoelectric fan 120 can be disposed in the groove. The mounting shell 121 of the piezoelectric fan 120 is connected to the cover 118, and the air inlet 125 of the piezoelectric fan 120 communicates with the air inlet 114.

[0048] According to some embodiments of the present invention, a partition 116 is disposed between the bottom wall of the groove and the cover 118, thereby dividing the groove into a first space and a second space in the direction from the bottom wall of the groove to the cover 118. The first space communicates with the air outlet 115, and the second space communicates with the opening of the groove. A protrusion 1162 is provided on the side of the partition 116 facing the opening of the groove. A middle channel 1165 is provided on the protrusion 1162. The middle channel 1165 passes through the partition 116 along the axial direction of the protrusion 1162 and communicates with the first space. The middle channel 1165 and the first space constitute an air duct 111. The side of the partition 116 facing the cover 118, the outer periphery of the protrusion 1162, the peripheral wall of the groove, and the cover 118 constitute an installation cavity 113. The protrusion 1162 and the cover 118 can be spaced apart to form a connecting channel between the protrusion 1162 and the cover 118. Furthermore, the piezoelectric fan 120 is connected to the cover 118 and is located between the air inlet 114 and the protrusion 1162. The air inlet 125 of the piezoelectric fan 120 is connected to the air inlet 114 on the cover 118, and the air outlet 124 of the piezoelectric fan 120 is connected to the intermediate channel 1165.

[0049] According to some embodiments of the present invention, the atomizing assembly 130 includes an atomizing plate 131 and an oil-guiding cotton 132. The atomizing plate 131 is connected to a partition 116, with one side of the atomizing plate 131 facing the mist outlet 1161. The oil-guiding cotton 132 is embedded between the atomizing plate 131 and the partition 116, and the oil-guiding cotton 132 is in contact with the atomizing plate 131, allowing the essential oil to be guided onto the atomizing plate 131. The atomizing plate 131 is connected to a circuit board 140. The atomizing plate 131 can vibrate under the drive of an alternating current at a certain frequency to disperse the essential oil into micron-sized mist. The pure essential oil atomizing device also includes a liquid storage box for holding essential oil. The liquid storage box is connected to the housing 110, and the cavity inside the liquid storage box communicates with the mounting cavity 113. One end of the oil-guiding cotton 132 is positioned between the atomizing plate 131 and the partition 116, and contacts the atomizing plate 131. The other end of the oil-guiding cotton 132 extends into the liquid storage box and contacts the essential oil. Furthermore, the partition 116 is provided with a fixing rib 1163, which extends circumferentially along the mist outlet 1161, thereby forming a fixing groove 1164 on the side of the mist outlet 1161 near the mounting cavity 113. The atomizing plate 131 is positioned within the fixing groove 1164, and the oil-guiding cotton 132 is sandwiched between the bottom of the fixing groove 1164 and the atomizing plate 131. The circuit board 140 can abut against the fixing rib 1163 for fixation.

[0050] In summary, this invention provides a pure essential oil atomizing device. By using a piezoelectric fan 120 to drive airflow within the air duct 111, it generates higher air pressure, enabling the generated mist to be completely and efficiently expelled, preventing condensation inside the air duct 111. Furthermore, the piezoelectric fan 120 requires less installation space, thus reducing the size of the pure essential oil atomizing device. In addition, by placing the atomizing component 130 within the mounting cavity 113 and providing a separate air duct 111, resistance in the airflow path is reduced, ensuring air pressure and improving the mist diffusion effect. Moreover, by positioning the mist outlet 1161 close to the air outlet 115 and placing the piezoelectric fan 120 at the air inlet 114, the mist does not pass through the piezoelectric fan 120 during its generation and expulsion from the pure essential oil atomizing device. This prevents mist condensation on the piezoelectric fan 120 after prolonged use, thus ensuring the air pressure of the airflow output by the piezoelectric fan 120.

[0051] Finally, it should be noted that the above embodiments are only for illustrating the present invention and are not intended to limit the present invention. It should be pointed out that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A pure essential oil atomizing device, characterized in that, include: The housing (110) has a partition (116) inside, which divides the housing (110) into an air duct (111) and an installation cavity (113). The housing (110) has an air inlet (114) and an air outlet (115) that communicate with the air duct (111) at intervals. The partition (116) has a mist outlet (1161) that communicates with the installation cavity (113) and the air duct (111). A piezoelectric fan (120) is connected to the housing (110) and is located at the air inlet (114). The air outlet of the piezoelectric fan (120) faces the interior of the air duct (111). The atomizing component (130) is disposed in the mounting cavity (113) and located at the mist outlet (1161).

2. The pure essential oil atomizing device according to claim 1, characterized in that, It also includes a circuit board (140), the partition (116) is spaced apart from the inner wall of the housing (110) on the side near the air inlet (114), so that a connecting channel (119) is formed between the partition (116) and the inner wall of the housing (110), the connecting channel (119) connects the mounting cavity (113) and the air duct (111), the circuit board (140) is disposed in the mounting cavity (113), and at least a portion of the piezoelectric fan (120) is located in the connecting channel (119). The atomizing component (130) and the piezoelectric fan (120) are respectively connected to the circuit board (140).

3. The pure essential oil atomizing device according to claim 2, characterized in that, It also includes a heat sink (150), which is disposed in the connection channel (119). The heat sink (150) has a contact portion (151) and a heat dissipation portion (152). The contact portion (151) is located in the mounting cavity (113) and contacts the circuit board (140). The heat dissipation portion (152) is located in the air duct (111) so that the air blown by the piezoelectric fan (120) passes through the surface of the heat dissipation portion (152).

4. The pure essential oil atomizing device according to claim 3, characterized in that, The heat dissipation part (152) is plate-shaped and has at least one ventilation hole (153).

5. The pure essential oil atomizing device according to claim 4, characterized in that, The heat dissipation part (152) is provided with at least one heat dissipation fin (154).

6. The pure essential oil atomizing device according to claim 4, characterized in that, The air outlet end is provided with at least one air outlet hole (124), the heat dissipation part (152) is disposed opposite to the air outlet end, and at least one ventilation hole (153) is opposite to at least one air outlet hole (124).

7. The pure essential oil atomizing device according to claim 4, characterized in that, The piezoelectric fan (120) includes a mounting shell (121), a piezoelectric element (122), and a vibrating diaphragm (123). The mounting shell (121) is connected to the housing (110). One end of the mounting shell (121) is provided with an air inlet (125), and the other end is open. The vibrating diaphragm (123) is disposed inside the mounting shell (121) and connected to the mounting shell (121). The piezoelectric element (122) is disposed on the vibrating diaphragm (123). The heat dissipation part (152) blocks the open end of the mounting shell (121) to form the wall of the piezoelectric fan.

8. The pure essential oil atomizing device according to claim 1, characterized in that, The air duct (111) extends along the outer periphery of the mounting cavity (113), and the air duct (111) has at least one bending area between the air inlet (114) and the air outlet (115). In the direction from the air inlet (114) to the air outlet (115), the bending area extends along an arc away from the side wall of the mounting cavity (113).

9. The pure essential oil atomizing device according to claim 1, characterized in that, The housing (110) includes a base (117) and a cover (118). The base (117) has a groove. The cover (118) is connected to the base (117) and the cover (118) blocks the opening of the groove. The air inlet (114) is located on the cover (118) and the air outlet (115) is located on the base (117).

10. The pure essential oil atomizing device according to claim 9, characterized in that, The partition (116) is disposed between the bottom wall of the groove and the cover (118), and divides the groove into a first space and a second space. The first space is connected to the air outlet (115), and the second space is connected to the opening of the groove. The partition (116) has a protrusion (1162) on one side facing the opening of the groove. The protrusion (1162) has a middle channel (1165). The middle channel (1165) passes through the partition (116) along the axial direction of the protrusion (1162) and connects to the first space. The middle channel (1165) and the first space constitute the air duct (111).

Images