A backflow prevention atomizing nozzle and aroma diffuser

Abstract

This application discloses an anti-backflow atomizing nozzle and a diffuser device, relating to the field of aromatherapy equipment. The anti-backflow atomizing nozzle includes a nozzle body and a piston. The nozzle body has a gas channel and a liquid channel. The gas channel includes an air inlet and a first air outlet, and the liquid channel includes a liquid inlet and a liquid outlet. The first air outlet outputs flowing gas to create a negative pressure at the liquid outlet and atomize the liquid output from the liquid outlet. The piston is slidably and sealingly installed in a piston chamber. When the anti-backflow atomizing nozzle is in a first state, the piston disconnects the connection between the first air outlet and the liquid outlet. When the anti-backflow atomizing nozzle is in a second state, the piston moves under the action of flowing gas output from the second air outlet, connecting the first air outlet and the liquid outlet. The anti-backflow atomizing nozzle provided by this application can prevent volatile essential oils from entering the air pump when not in operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aromatherapy machines, in particular to a backflow prevention atomizing nozzle and an aroma diffusing device. BACKGROUND

[0002] With the improvement of living standards, consumers gradually begin to pursue high-quality life. Among them, the aromatherapy machine can provide a fragrance space for users, which helps users to wake up and be happy.

[0003] However, the existing waterless aromatherapy machine is prone to cause the volatile essential oil in the essential oil bottle to enter the air pump through the atomizing nozzle in the non-working state, causing corrosion and damage to the air pump. SUMMARY

[0004] The present application provides a backflow prevention atomizing nozzle and an aroma diffusing device, which prevents the volatile essential oil from entering the air pump in the non-working state.

[0005] The present application provides:

[0006] A backflow prevention atomizing nozzle, comprising a first state and a second state, the backflow prevention atomizing nozzle further comprising a nozzle body and a piston piece;

[0007] The nozzle body is provided with a gas passage and a liquid passage, the gas passage comprises an air inlet and a first gas outlet, the liquid passage comprises a liquid inlet and a liquid outlet, and the first gas outlet is used to output flowing gas to form negative pressure at the liquid outlet and atomize the liquid output by the liquid outlet.

[0008] The nozzle body is also provided with a piston cavity, the gas passage further comprises a second gas outlet, the second gas outlet is in communication with the piston cavity, and the piston piece is sealingly and slidingly installed in the piston cavity.

[0009] When the backflow prevention atomizing nozzle is in the first state, the piston piece disconnects the communication between the first gas outlet and the liquid outlet.

[0010] When the backflow prevention atomizing nozzle is in the second state, the piston piece moves under the action of the flowing gas output by the second gas outlet and connects the first gas outlet and the liquid outlet.

[0011] In addition, the present application also provides an aroma diffusing device comprising the backflow prevention atomizing nozzle provided by the present application.

[0012] The beneficial effects of this application are as follows: This application proposes an anti-backflow atomizing nozzle and a diffuser device, the diffuser device including the anti-backflow atomizing nozzle. The anti-backflow atomizing nozzle includes a nozzle body and a piston. The anti-backflow atomizing nozzle includes a gas channel and a liquid channel. It is understood that when the anti-backflow atomizing nozzle is applied to the diffuser device, the air inlet of the gas channel can be connected to an air pump, and the liquid inlet of the liquid channel can be connected to an essential oil bottle. In addition, a piston is also provided in the nozzle body. When the diffuser device is in a non-working state (i.e., the anti-backflow atomizing nozzle is in the first state), the piston can block the liquid outlet of the liquid channel and the first air outlet of the gas channel, preventing essential oils evaporating from the essential oil bottle from entering the air pump, thereby delaying air pump damage, extending air pump lifespan, and improving user experience. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the explosion structure of the aroma diffuser in some embodiments is shown;

[0015] Figure 2 A three-dimensional structural schematic diagram of the aroma diffuser is shown in some embodiments;

[0016] Figure 3 Another three-dimensional structural schematic diagram of the aroma diffuser in some embodiments is shown;

[0017] Figure 4 A partial explosion structure diagram of the diffuser device in some embodiments is shown;

[0018] Figure 5 A cross-sectional structural schematic diagram of the aroma diffuser is shown in some embodiments;

[0019] Figure 6 It shows Figure 5 A partially enlarged structural diagram of part A in the middle;

[0020] Figure 7 It shows Figure 5 A partially enlarged structural diagram of section B;

[0021] Figure 8 A partial cross-sectional structural schematic diagram of the aroma diffuser in some embodiments is shown;

[0022] Figure 9 It shows Figure 8Local enlarged structural diagram of middle C part;

[0023] Figure 10 Three-dimensional structural diagram of mounting bracket in some embodiments is shown;

[0024] Figure 11 Sectional structural diagram of mounting bracket in some embodiments is shown;

[0025] Figure 12 Three-dimensional structural diagram of adapter in some embodiments is shown;

[0026] Figure 13 Sectional structural diagram of atomizing nozzle in first state in embodiment one is shown;

[0027] Figure 14 Sectional structural diagram of atomizing nozzle in second state in embodiment one is shown;

[0028] Figure 15 Sectional structural diagram of liquid suction tube assembly in some embodiments is shown;

[0029] Figure 16 Exploded structural diagram of sound attenuation assembly in some embodiments is shown;

[0030] Figure 17 Structural diagram of main control board in some embodiments is shown;

[0031] Figure 18 Sectional structural diagram of atomizing nozzle in first state in embodiment two is shown;

[0032] Figure 19 Sectional structural diagram of atomizing nozzle in second state in embodiment two is shown;

[0033] Figure 20 Sectional structural diagram of atomizing nozzle in first state in embodiment three is shown;

[0034] Figure 21 Sectional structural diagram of atomizing nozzle in second state in embodiment three is shown;

[0035] Figure 22 Sectional structural diagram of first structure in embodiment three is shown;

[0036] Figure 23 Sectional structural diagram of second structure in embodiment three is shown;

[0037] Figure 24 Sectional structural diagram of piston in embodiment three is shown;

[0038] Figure 25A cross-sectional view of the atomizing nozzle in the first state is shown in Figure 4;

[0039] Figure 26 A cross-sectional view of the atomizing nozzle in the second state is shown in Figure 5;

[0040] Figure 27 A cross-sectional view of the atomizing nozzle in the first state is shown in Figure 6;

[0041] Figure 28 A cross-sectional view of the atomizing nozzle in the second state is shown in Figure 7.

[0042] Explanation of main element symbols:

[0043] 100 - host; 110 - housing assembly; 1101 - mounting cavity; 111 - main housing; 112 - bottom shell; 113 - end cover; 1131 - assembly hole; 120 - mounting bracket; 121 - first accommodating cavity; 122 - second accommodating cavity; 123 - third accommodating cavity; 124 - first air hole; 131 - adapter seat; 1311 - spiral chute; 1312 - limiting protrusion; 1313 - third air hole; 132 - first sealing ring; 133 - second sealing ring; 134 - light guide ring; 140 - air pump; 150 - power supply; 151 - charging interface; 160 - main control board; 161 - operation button; 162 - indicator light group; 171 - key cap; 172 - light guide column; 173 - human sensing structure; 174 - light sensing structure; 200 - atomization mechanism; 210 - atomization nozzle; 210a - first state; 210b - second state; 211 - nozzle body; 2111 - gas channel; 2111a - gas inlet; 2111b - first gas outlet; 2111c - second gas outlet; 2112 - liquid channel; 2112a - liquid inlet; 2112b - liquid outlet; 2112c - liquid inlet section; 2112d - liquid storage section; 2113 - first structure; 21131 - assembly cavity; 21132 - adapter pipe; 2114 - second structure; 21141 - atomization channel; 21142 - atomization outlet; 21143 - adapter channel; 21144 - first via hole; 21145 - piston cavity; 21145a - first cavity; 21145b - second cavity; 21146 - second via hole; 21147 - second air hole; 21148 - third via hole; 21149 - fourth via hole; 212 - piston piece; 2121 - piston body; 2122 - plug needle; 2123 - flow channel; 21231 - first opening structure; 21232 - second opening structure; 213 - reset piece; 220 - mounting sleeve; 221 - atomization cavity; 222 - threaded connection part; 223 - conduit part; 224 - first air nozzle; 225 - sliding protrusion; 226 - second air nozzle; 227 - step avoiding part; 230 - liquid suction tube assembly; 231 - connecting tube; 2311 - first limiting flange; 232 - telescopic tube; 2321 - second limiting flange; 233 - elastic piece; 240 - sound attenuation assembly; 241 - first flow guide structure; 2411 - first flow guide cavity; 2412 - first bottom plate; 2413 - first through hole; 242 - second flow guide structure; 2421 - second flow guide cavity; 2422 - second bottom plate; 2423 - second through hole; 243 - cover plate; 2431 - third through hole; 250 - converging cover; 251 - diffusion port; 310 - closed cavity; 400 - essential oil bottle. DETAILED DESCRIPTION

[0044] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0046] Example 1

[0047] The embodiment provides a diffuser that can be used to atomize liquids such as essential oils into aerosols and disperse them into the surrounding air to provide a diffuser function.

[0048] like Figures 1 to 5 As shown, the aroma diffuser may include a main unit 100 and an atomizing mechanism 200.

[0049] The main unit 100 includes a housing assembly 110, a mounting bracket 120, and an air pump 140. The housing assembly 110 may include a main housing 111, a bottom housing 112, and an end cap 113. The main housing 111 has a hollow interior and both ends are open. The bottom housing 112 and the end cap 113 are located at opposite ends of the main housing 111, and the main housing 111, bottom housing 112, and end cap 113 can be fitted together to form a mounting cavity 1101. When using the diffuser, the surface of the bottom housing 112 away from the end cap 113 can be used to contact a tabletop or other placement platform.

[0050] The mounting bracket 120 can be fixedly installed in the mounting cavity 1101 by means of screw connection, snap-fit, etc. A first receiving cavity 121 is formed on the side of the mounting bracket 120 near the end cap 113. An assembly hole 1131 communicating with the first receiving cavity 121 can be formed on the end cap 113. In this embodiment, the end of the first receiving cavity 121 near the end cap 113 is an open structure, and the end of the first receiving cavity 121 away from the end cap 113 is a closed structure. During assembly, the atomizing mechanism 200 can be inserted into the first receiving cavity 121 through the assembly hole 1131.

[0051] like Figure 1 , Figure 4 and Figure 5As shown, the host 100 further comprises an adapter 131 in a tubular shape. The adapter 131 can be fixedly connected to the mounting bracket 120 near one end of the end cover 113 by means of bolting, clamping, screwing, etc., and the adapter 131 is circumferentially arranged around the opening structure of the first accommodating cavity 121. In the embodiment, the connection between the adapter 131 and the mounting bracket 120 can be provided with a first sealing ring 132 to achieve a sealed connection between the adapter 131 and the mounting bracket 120.

[0052] Further in combination Figure 8 and Figure 9 , the end of the adapter 131 away from the mounting bracket 120 can extend to the position of the assembly hole 1131 of the end cover 113, and the adapter 131 is in sealed connection with the position of the assembly hole 1131 of the end cover 113. Specifically, the end of the adapter 131 near the end cover 113 can be sleeved with a second sealing ring 133. The host 100 further comprises a light guide ring 134, one end of the light guide ring 134 is shaped to fit the shape of the position of the assembly hole 1131 in the end cover 113, and the other end of the light guide ring 134 is shaped to fit the shape of the end of the second sealing ring 133 away from the adapter 131. In the embodiment, the light guide ring 134 can abut between the end cover 113 and the second sealing ring 133, and press the second sealing ring 133 tightly on the adapter 131. It can be understood that the space between the first accommodating cavity 121 and the assembly hole 1131 can be isolated from the mounting cavity 1101 in the shell assembly 110.

[0053] When the atomization mechanism 200 is assembled into the first accommodating cavity 121 through the assembly hole 1131, the circumferential side wall of the atomization mechanism 200 can abut with the first sealing ring 132 and the second sealing ring 133 respectively. Correspondingly, on the side of the first sealing ring 132 away from the second sealing ring 133, the gap between the atomization mechanism 200 and the inner wall of the first accommodating cavity 121 can form a closed cavity 310. At the same time, under the cooperation of the first sealing ring 132 and the second sealing ring 133, the atomization mechanism 200 can be in a nearly completely closed space, which can reduce the possibility of noise generated by the atomization mechanism 200 during operation to spread outward, and improve the user experience.

[0054] As Figure 1 , Figure 4 , Figure 5 , Figure 8 , Figure 10 and Figure 11As shown, the mounting bracket 120 is also provided with a second accommodating cavity 122 at one end away from the end cover 113. The two ends of the second accommodating cavity 122 are both open structures. The air pump 140 can be fixedly installed in the second accommodating cavity 122 by screw connection, clamping, structural limiting, etc. In the embodiment, the air pump 140 can be in communication with the closed cavity 310 through an air pipe, so as to supply flowing gas to the atomization mechanism 200. Specifically, the mounting bracket 120 can be provided with a first air hole 124 in communication with the closed cavity 310. One end of the first air hole 124 away from the closed cavity 310 can be in communication with the output end of the air pump 140 through an air pipe.

[0055] When the fragrance diffusion device is used, the essential oil bottle 400 for containing essential oil can be connected to the atomization mechanism 200. The essential oil bottle 400 can be loaded into the first accommodating cavity 121 together with the atomization mechanism 200 from the assembly hole 1131, and the essential oil bottle 400 is accommodated in the first accommodating cavity 121. With the flowing gas supplied by the air pump 140, the atomization mechanism 200 can obtain essential oil from the essential oil bottle 400, and atomize the essential oil into aerosol to diffuse to the surrounding environment, realizing the fragrance diffusion function.

[0056] In the embodiment, the atomization mechanism 200 and the main machine 100 are detachably connected, so that the user can add essential oil to the essential oil bottle 400 or replace the essential oil bottle 400. Specifically, the atomization mechanism 200 can be detachably connected with the adapter seat 131, so as to be fixedly installed in the main machine 100.

[0057] As shown in Figure 1 , Figure 4 and Figure 8 , the atomization mechanism 200 can include an anti-backflow atomization nozzle (referred to as atomization nozzle 210), a mounting sleeve 220, a liquid suction pipe assembly 230, and a current collector cover 250.

[0058] The mounting sleeve 220 can be used as a mounting carrier of the atomization mechanism 200. The atomization nozzle 210, the liquid suction pipe assembly 230, and the current collector cover 250, etc. can be mounted on the mounting sleeve 220. In the embodiment, the mounting sleeve 220 is detachably connected with the adapter seat 131, so as to realize the detachable connection between the atomization mechanism 200 and the main machine 100.

[0059] Further combined with Figure 12 In some embodiments, the inner wall of the adapter seat 131 is provided with three evenly distributed spiral sliding grooves 1311. One end of the spiral sliding groove 1311 away from the mounting bracket 120 is an open structure, and is in communication with the assembly hole 1131 on the end cover 113. One end of the spiral sliding groove 1311 close to the mounting bracket 120 is a closed structure.

[0060] Correspondingly, the outer side of the mounting sleeve 220 is provided with three sliding protrusions 225, which are uniformly distributed around the circumference of the mounting sleeve 220. When the atomization mechanism 200 is installed into the main machine 100, the three sliding protrusions 225 can be inserted one by one from the opening structure of the three spiral sliding grooves 1311. By rotating the atomization mechanism 200 relative to the main machine 100, the three sliding protrusions 225 can move along the corresponding spiral sliding grooves 1311, respectively, and gradually move to the closed structure end of the spiral sliding grooves 1311, so as to realize the assembly between the atomization mechanism 200 and the main machine 100.

[0061] Further, the limiting protrusions 1312 are further protruded on the groove wall of the spiral sliding groove 1311 close to one end of the mounting bracket 120. When the atomization mechanism 200 is installed in place relative to the main machine 100, the sliding protrusions 225 can pass through the corresponding limiting protrusions 1312 and be limited on the side of the limiting protrusions 1312 close to the closed structure of the spiral sliding groove 1311, which can prevent the atomization mechanism 200 and the main machine 100 from loosening. At the same time, when the sliding protrusions 225 pass through the corresponding limiting protrusions 1312, a certain reaction force can be generated on the user's hand, increasing the user's perception, so that the user knows that the atomization mechanism 200 and the main machine 100 have been installed in place, avoiding the user from rotating the atomization mechanism 200 excessively and causing damage to the atomization mechanism 200 and / or the main machine 100.

[0062] The three sets of spiral sliding grooves 1311 and sliding protrusions 225 arranged between the mounting sleeve 220 and the adapter 131 can facilitate the user to quickly align and install the atomization mechanism 200 and the main machine 100, improve the installation speed, and the user does not need to adjust the atomization mechanism 200 to a large angle to align with the main machine 100, thereby improving the user experience.

[0063] In other embodiments, the spiral sliding grooves 1311 and the sliding protrusions 225 can also be arranged in two groups, four groups, etc. That is, the spiral sliding grooves 1311 and the sliding protrusions 225 can be arranged in at least two groups to facilitate the user to install the atomization mechanism 200 into the main machine 100.

[0064] In another embodiment, the spiral sliding grooves 1311 and the sliding protrusions 225 can be arranged in two groups, four groups, etc. That is, the spiral sliding grooves 1311 and the sliding protrusions 225 can be arranged in at least two groups to facilitate the user to install the atomization mechanism 200 into the main machine 100. Figure 7 Further, when the atomization mechanism 200 is installed in place relative to the main machine 100, the circumferential side wall of the mounting sleeve 220 can abut against the first sealing ring 132, which can realize sealing and also can realize holding and fixing of the mounting sleeve 220, ensuring the stability of the installation of the atomization mechanism 200 relative to the main machine 100.

[0065] In this embodiment, a step-avoidance portion 227 is also provided circumferentially on the mounting sleeve 220. After the atomizing mechanism 200 and the main unit 100 are installed in place, the step-avoidance portion 227 can be located on the side of the first sealing ring 132 away from the second sealing ring 133, and the step-avoidance portion 227 can be disposed adjacent to the first sealing ring 132. In some embodiments, the outer diameter of the step-avoidance portion 227 can gradually become smaller than the inner diameter of the first sealing ring 132 in the direction away from the first sealing ring 132.

[0066] When the atomizing mechanism 200 is separated from the main unit 100, the first sealing ring 132 gradually aligns with the step clearance portion 227, gradually eliminating the clamping force of the first sealing ring 132 on the mounting sleeve 220, thus shortening the obstruction distance of the first sealing ring 132 on the movement of the mounting sleeve 220. Understandably, when the first sealing ring 132 has no clamping force on the mounting sleeve 220, the user only needs to overcome the helical force between the mounting sleeve 220 and the adapter 131 to separate the main unit 100 and the atomizing mechanism 200. Similarly, when the user installs the atomizing mechanism 200 onto the main unit 100, the installation resistance is also reduced. Therefore, it is convenient for the user to disassemble and assemble the main unit 100 and the atomizing mechanism 200, facilitating the replacement of the essential oil bottle 400 or the replenishment of essential oil into the essential oil bottle 400.

[0067] like Figure 8 As shown, the interior of the mounting sleeve 220 is hollow, forming an atomizing chamber 221. It is understood that both ends of the mounting sleeve 220 are open structures. In this embodiment, one end of the mounting sleeve 220 is provided with a threaded connection portion 222, which can be used to thread-connect an essential oil bottle 400 containing essential oil. A conduit portion 223 is also provided at the end of the mounting sleeve 220 near the threaded connection portion 222. The conduit portion 223 can be located inside the threaded connection portion 222, and is spaced apart from the threaded connection portion 222. When the mounting sleeve 220 is connected to the essential oil bottle 400, the conduit portion 223 can be inserted into the essential oil bottle 400. Correspondingly, the essential oil bottle 400 can communicate with the atomizing chamber 221 through the conduit portion 223. In some embodiments, the threaded connection portion 222 can be provided at the end of the mounting sleeve 220 near the mounting bracket 120.

[0068] Combined again Figure 1 ,3 and Figure 14The atomizing nozzle 210 can be fixedly installed in the atomizing chamber 221 by means of snap-fit, structural limiting, screw connection, etc. In the embodiment, the atomizing nozzle 210 includes an air inlet 2111a, a liquid inlet 2112a, and an atomizing outlet 21142. The atomizing outlet 21142 can communicate with the atomizing chamber 221. The liquid inlet 2112a can be connected to the inside of the essential oil bottle 400 through the liquid suction tube assembly 230, and the essential oil in the essential oil bottle 400 can be transported to the liquid inlet 2112a of the atomizing nozzle 210 through the liquid suction tube assembly 230. The air inlet 2111a can be connected to the closed cavity 310 to obtain an air source. Correspondingly, a first air nozzle 224 can be fixedly installed on the mounting sleeve 220. One end of the first air nozzle 224 is connected to the air inlet 2111a of the atomizing nozzle 210, and the other end of the first air nozzle 224 can be connected to the closed cavity 310.

[0069] like Figure 1 , Figures 4 to 8 As shown, the manifold 250 can be fixedly connected to the end of the mounting sleeve 220 away from the threaded connection 222 by means of snap-fit, threaded connection, screw connection, etc. It is understood that the connection between the manifold 250 and the mounting sleeve 220 can be a sealed connection. In this embodiment, the manifold 250 may have a diffuser 251 communicating with the atomizing chamber 221 and the external environment, allowing aerosol to be output to the external environment. When the atomizing mechanism 200 is assembled on the main unit 100, the circumferential direction of the manifold 250 near the mounting sleeve 220 can abut against the second sealing ring 133.

[0070] Combined again Figure 13 and Figure 14 When the aroma diffuser is in operation, the air pump 140 continuously supplies flowing gas to the closed cavity 310. The flowing gas in the closed cavity 310 is continuously delivered to the air inlet 2111a of the atomizing nozzle 210 through the first air nozzle 224. With the help of the flowing gas, the atomizing nozzle 210 can obtain essential oil from the essential oil bottle 400 through the liquid suction tube assembly 230 and atomize the essential oil into an aerosol, which is then delivered to the atomizing chamber 221. The aerosol in the atomizing chamber 221 can diffuse into the external environment through the diffuser port 251 to provide aroma diffusion.

[0071] like Figure 13 and Figure 14 As shown, in some embodiments, the atomizing nozzle 210 may include a nozzle body 211, a piston 212, and a reset member 213.

[0072] Combined again Figure 8The nozzle body 211 includes a gas channel 2111 and a liquid channel 2112. It is understood that the gas channel 2111 may include an air inlet 2111a and a first air outlet 2111b. The liquid channel 2112 may include a liquid inlet 2112a and a liquid outlet 2112b. The air inlet 2111a is connected to the first air nozzle 224, and the liquid inlet 2112a may be connected to the suction pipe assembly 230.

[0073] In this embodiment, the nozzle body 211 may include a first structure 2113 and a second structure 2114. The first structure 2113 is a tubular structure with openings at both ends, and a liquid channel 2112 may be formed on the first structure 2113. A gas channel 2111 may be formed on the second structure 2114.

[0074] In some embodiments, the second structure 2114 is further provided with an atomizing channel 21141 communicating with the first air outlet 2111b. The atomizing channel 21141 may be coaxial with the gas channel 2111. The diameter of the atomizing channel 21141 may be smaller than the diameter of the gas channel 2111. When flowing gas enters the atomizing channel 21141 through the gas channel 2111, the flowing gas can be pressurized, increasing the flow rate of the flowing gas. It is understood that the atomizing outlet 21142 may be provided on the second structure 2114 and communicate with the atomizing channel 21141. In some embodiments, the atomizing outlet 21142 may be located at the end of the atomizing channel 21141 away from the gas channel 2111, and the atomized aerosol can be sprayed into the atomizing chamber 221 through the atomizing outlet 21142.

[0075] like Figure 13 and Figure 14 As shown, the second structure 2114 also includes a transition channel 21143. The transition channel 21143 is perpendicular to the atomizing channel 21141 and communicates with the atomizing channel 21141 through a first through hole 21144. Along the axial direction of the atomizing channel 21141, the first through hole 21144 is located in the middle of the atomizing channel 21141. One end of the second structure 2114 near the liquid outlet 2112b is fixedly inserted into the transition channel 21143, and the liquid outlet 2112b is positioned near the first through hole 21144. In this embodiment, the second structure 2114 is tightly fitted to the inner wall of the transition channel 21143 to achieve a sealed and fixed connection.

[0076] Combined again Figure 8When the aroma diffuser is working, the high-speed flowing gas can create a negative pressure at the first through-hole 21144. Under the action of the pressure difference, the essential oil in the essential oil bottle 400 can be forced into the suction tube assembly 230 and delivered to the first through-hole 21144 through the first structure 2113. At the same time, the essential oil reaching the first through-hole 21144 can be atomized under the action of the high-speed flowing gas to form an aerosol, which is then sprayed into the atomization chamber 221 through the atomization outlet 21142.

[0077] In some embodiments, the second structure 2114 further includes a piston chamber 21145 opposite to the transition channel 21143. The piston chamber 21145 includes a first chamber 21145a and a second chamber 21145b arranged in a T-shape, and the first chamber 21145a and the second chamber 21145b are connected. The first chamber 21145a is closer to the transition channel 21143 than the second chamber 21145b. In another embodiment, the gas channel 2111 further includes a second gas outlet 2111c, which can communicate with the second chamber 21145b.

[0078] The piston component 212 is slidably mounted in the piston cavity 21145. The sliding direction of the piston component 212 may be parallel to the axial direction of the transition channel 21143. In this embodiment, the piston component 212 may include an integral piston body 2121 and a plug needle 2122. The piston body 2121 may have a T-shaped structure and be adapted to the shape of the piston cavity 21145. The piston body 2121 is slidably mounted in the piston cavity 21145. The plug needle 2122 may be located at one end of the piston body 2121 near the transition channel 21143 and may move under the drive of the piston body 2121. In addition, the plug needle 2122 may be coaxially opposite to the first through hole 21144, and the diameter of the plug needle 2122 may be equal to the diameter of the first through hole 21144.

[0079] The second structure 2114 also has a second through hole 21146 connecting the piston chamber 21145 and the atomizing channel 21141. The second through hole 21146 can be coaxially opposite to the first through hole 21144. The diameter of the second through hole 21146 can be equal to or slightly larger than the diameter of the plug needle 2122. In the embodiment, the end of the plug needle 2122 away from the piston body 2121 can extend or retract relative to the second through hole 21146.

[0080] Combined Figure 4 , Figure 8 , Figure 13 and Figure 14When the piston body 2121 drives the stopper needle 2122 to slide towards the transition channel 21143, the end of the stopper needle 2122 away from the piston body 2121 can be sequentially inserted into the second through hole 21146 and the first through hole 21144. This allows for the scraping away of essential oil adhering to the first through hole 21144, achieving a cleaning effect and preventing blockage. Simultaneously, the stopper needle 2122 can also seal the first through hole 21144, preventing essential oil evaporating from the essential oil bottle 400 from entering the air pump 140 through the atomization channel 21141, gas channel 2111, etc., and corroding or damaging the air pump 140. This extends the service life of the air pump 140 and reduces the later maintenance costs of the diffuser. Correspondingly, the atomizing nozzle 210 can include a first state 210a, i.e., a non-working state.

[0081] When the piston body 2121 drives the plug needle 2122 to move away from the transition channel 21143, the plug needle 2122 can be gradually received in the piston cavity 21145. In the embodiment, the end of the plug needle 2122 away from the piston body 2121 can be moved at least to the position of the second through hole 21146 to ensure the unobstructed flow of the first through hole 21144 and the atomization channel 21141, and to ensure that the atomization action is carried out smoothly. Correspondingly, the atomizing nozzle 210 may include a second state 210b, i.e., the working state.

[0082] Of course, in some other embodiments, when the atomizing nozzle 210 is in the second state 210b, it is possible that the end of the plug needle 2122 away from the piston body 2121 is inserted into the atomizing channel 21141, so that the atomizing channel 21141 is partially unobstructed.

[0083] like Figure 13 and Figure 14 As shown, the reset member 213 can be disposed in the second cavity 21145b and located on the side of the piston body 2121 away from the plug needle 2122. In some embodiments, the reset member 213 can be selected from one of the elastic structures such as a spring, a flexible block, or a spring sheet. In the embodiment, one end of the reset member 213 can abut against the end of the piston body 2121 away from the plug needle 2122, and the other end of the reset member 213 can abut against the inner wall of the second cavity 21145b. When the atomizing nozzle 210 is in the first state 210a, the reset member 213 can be in a natural state or a compressed state. When the atomizing nozzle 210 is in the second state 210b, the reset member 213 can be in a compressed state. In the embodiment, the second air outlet 2111c can be spatially connected to the side of the piston body 2121 away from the reset member 213.

[0084] When the diffuser is working, the flowing gas delivered through the gas channel 2111 can enter the second cavity 21145b through the second outlet 2111c, and overcome the elastic force of the reset member 213 to push the piston member 212 to move away from the transition channel 21143. Correspondingly, the plug needle 2122 can gradually disengage from the first through hole 21144 and the atomizing channel 21141, so that the first through hole 21144 and the atomizing channel 21141 are opened, that is, the atomizing nozzle 210 is in the second state 210b. When the diffuser stops working, the piston member 212 can move towards the transition channel 21143 under the elastic force of the reset member 213. Correspondingly, the plug needle 2122 can gradually insert into the atomizing channel 21141 and the first through hole 21144 to seal, that is, the atomizing nozzle 210 switches to the first state 210a.

[0085] Combined again Figure 8 and Figure 9 In this embodiment, the second structure 2114 is further provided with a second vent 21147 communicating with the second cavity 21145b. Specifically, the second vent 21147 can communicate with the side of the piston 212 near the reset member 213. Correspondingly, a second nozzle 226 communicating with the second vent 21147 can be installed on the mounting sleeve 220. A third vent 1313 corresponding to and communicating with the second nozzle 226 can be provided on the adapter 131. The third vent 1313 can communicate with the external environment through the assembly gap between the housing components 110. Thus, it can be ensured that the flowing gas can smoothly drive the piston 212 to move.

[0086] like Figure 8 and Figure 15 As shown, the suction tube assembly 230 may include a connecting tube 231, a telescopic tube 232, and an elastic element 233. The connecting tube 231 is fixedly connected to the end of the first structure 2113 near the inlet 2112a by means of bonding, interference fit, threaded connection, etc. One end of the telescopic tube 232 is slidably disposed at the end of the connecting tube 231 away from the first structure 2113.

[0087] In this embodiment, a first limiting flange 2311 protrudes from the inner side of the end of the connecting pipe 231 furthest from the first structure 2113. Correspondingly, a second limiting flange 2321 protrudes from the outer side of the telescopic pipe 232 near the end of the connecting pipe 231. The inner diameter of the first limiting flange 2311 is smaller than the outer diameter of the second limiting flange 2321. Therefore, the end of the telescopic pipe 232 with the second limiting flange 2321 can be confined within the connecting pipe 231, preventing the telescopic pipe 232 from separating from the connecting pipe 231.

[0088] The elastic element 233 can be disposed within the connecting pipe 231 and located at one end of the telescopic pipe 232 near the first structure 2113. In an embodiment, one end of the elastic element 233 can abut against the end of the telescopic pipe 232 where the second limiting flange 2321 is provided. The other end of the elastic element 233 can abut against the end of the first structure 2113 near the liquid inlet 2112a. When the second limiting flange 2321 abuts against the first limiting flange 2311, the elastic element 233 can be in a natural state or a compressed state. In some embodiments, the elastic element 233 can be a spring.

[0089] In other embodiments, the elastic element 233 may also be a flexible column, a spring sheet, or other similar structure. It is understood that when the elastic element 233 is a flexible column, there should be a gap between the elastic element 233 and the connecting pipe 231 for the essential oil to pass through, or the elastic element 233 should have a channel for the essential oil to pass through.

[0090] Therefore, the suction tube assembly 230 can have different lengths to accommodate essential oil bottles 400 with different heights, ensuring that the end of the suction tube assembly 230 away from the atomizing nozzle 210 can always be in contact with the bottom of the essential oil bottle 400, so that the essential oil in the essential oil bottle 400 can be fully utilized and waste can be avoided.

[0091] like Figure 1 , Figures 4 to 7 as well as Figure 16 As shown, the atomizing mechanism 200 also includes a noise reduction component 240, which can be used to absorb the noise generated during the operation of the atomizing mechanism 200, reducing discomfort to the user. In this embodiment, the noise reduction component 240 can be fixedly disposed at one end of the atomizing nozzle 210 near the manifold 250. The noise reduction component 240 can be connected between the atomizing chamber 221 and the diffuser 251. That is, the aerosol output from the atomizing chamber 221 can be transmitted to the diffuser 251 for outward diffusion after passing through the noise reduction component 240.

[0092] The silencing assembly 240 may include a first flow guiding structure 241, a second flow guiding structure 242, and a cover plate 243 stacked sequentially. The first flow guiding structure 241 is located near the atomizing chamber 221, and the cover plate 243 is located near the manifold 250. Aerosol can be sequentially transported through the first flow guiding structure 241, the second flow guiding structure 242, and the cover plate 243 to the diffuser 251 for diffusion into the external environment.

[0093] In some embodiments, a first flow guiding cavity 2411 is formed on the side of the first flow guiding structure 241 near the second flow guiding structure 242. The first flow guiding structure 241 also includes a first base plate 2412, which is located at the end of the first flow guiding structure 241 away from the second flow guiding structure 242. In an embodiment, at least one first through hole 2413 is formed on the first base plate 2412, which can communicate with the atomizing cavity 221 and the first flow guiding cavity 2411 respectively. Accordingly, the aerosol located in the atomizing cavity 221 can enter the first flow guiding cavity 2411 through the first through hole 2413.

[0094] The first base plate 2412 may be inclined relative to the axial direction of the diffuser, meaning that the distances between the two ends of the first base plate 2412 and the manifold 250 are different. Two first through holes 2413 may be formed on the first base plate 2412. One of the first through holes 2413 may be located in the first base plate 2412 relatively close to the manifold 250, i.e., at a higher position on the first base plate 2412. The other first through hole 2413 may be located in the first base plate 2412 relatively far from the manifold 250, i.e., at a lower position on the first base plate 2412. That is, the vertical distance between one of the first through holes 2413 and the diffuser 251 is less than the vertical distance between the other first through hole 2413 and the diffuser 251. The axial direction of the diffuser may refer to the extension direction of axis L.

[0095] In other embodiments, the first base plate 2412 may also have one, three, or other equal number of first through holes 2413. When the first base plate 2412 has multiple first through holes 2413, at least one first through hole 2413 is located at a high position on the first base plate 2412, which can ensure that at least one first through hole 2413 is not easily blocked by condensed essential oil.

[0096] The second flow guiding structure 242 has a second flow guiding cavity 2421 on the side near the cover plate 243. The second flow guiding structure 242 also includes a second base plate 2422, which can be located at one end of the second flow guiding structure 242 near the first flow guiding structure 241. The second base plate 2422 can have at least one second through hole 2423, which can communicate with the first flow guiding cavity 2411 and the second flow guiding cavity 2421 respectively.

[0097] The second base plate 2422 may also be inclined relative to the axial direction of the diffuser. In this embodiment, two second through holes 2423 may be provided on the second base plate 2422. One of the second through holes 2423 may be located at the end of the second base plate 2422 that is relatively close to the manifold 250, that is, at the high position of the second base plate 2422. The other second through hole 2423 may be located at the end of the second base plate 2422 that is relatively far away from the manifold 250, that is, at the low position of the second base plate 2422. That is, the vertical distance between one of the second through holes 2423 and the diffuser 251 is smaller than the vertical distance between the other second through hole 2423 and the diffuser 251.

[0098] In other embodiments, the second base plate 2422 may also have one, three, or other equal number of second through holes 2423. When the second base plate 2422 has multiple second through holes 2423, at least one second through hole 2423 is located at a high position on the second base plate 2422, thereby ensuring that at least one second through hole 2423 is not easily blocked by condensed essential oil.

[0099] The cover plate 243 may be perpendicular to the axis of the diffuser. A third through hole 2431 communicating with the second flow guide cavity 2421 may be provided on the cover plate 243. The third through hole 2431 may be located in the middle of the cover plate 243 and coaxially opposite to the diffuser port 251. The aerosol output from the second flow guide cavity 2421 can be transported to the diffuser port 251 through the third through hole 2431 and diffused outwards.

[0100] In this embodiment, the two second through holes 2423 can be misaligned with the two first through holes 2413. Therefore, the aerosol located in the first guide cavity 2411 needs to undergo a certain lateral movement to reach the second through holes 2423 and enter the second guide cavity 2421 through them. Similarly, when the aerosol travels from the second through hole 2423 through the second guide cavity 2421 to the third through hole 2431, there will also be a certain lateral movement. This extends the aerosol's travel distance, thereby reducing the volume and frequency of noise and improving the user experience.

[0101] Furthermore, when some of the essential oil in the aerosol condenses and flows back, it can flow back to the atomizing chamber 221 through the second through hole 2423 located at the lower position of the second base plate 2422 and the first through hole 2413 located at the lower position of the first base plate 2412, and then back to the essential oil bottle 400 through the conduit portion 223 of the mounting sleeve 220. The first base plate 2412 and the second base plate 2422 are inclined, which facilitates the collection of essential oil on the corresponding base plates towards the lower position and its backflow through the lower through holes. This reduces the accumulation of essential oil in the silencer assembly 240 and ensures the unobstructed aerosol output path, reducing the occurrence of blockages.

[0102] In other embodiments, the noise reduction assembly 240 may also include three or four equal numbers of flow guiding structures stacked sequentially to extend the aerosol output path.

[0103] like Figure 3 , Figure 4 and Figure 10 As shown, the aroma diffuser also includes a power supply 150, which can supply power to other electrical components in the diffuser. A third receiving cavity 123 is also provided at the end of the mounting bracket 120 away from the end cap 113, in which the power supply 150 can be fixedly installed. In some embodiments, the power supply 150 is a rechargeable battery. Correspondingly, the aroma diffuser also includes a charging interface 151 electrically connected to the power supply 150. The charging interface 151 can be fixedly installed on the bottom shell 112 and exposed to the external environment, so that the user can connect a power bank, mains power, etc., to charge the power supply 150.

[0104] Combined again Figure 2 and Figure 17 Understandably, the aroma diffuser also includes a main control board 160, which can be arranged circumferentially around the adapter 131, and can be fixed to the mounting bracket 120 or the adapter 131 by means of screws, snap-fit, etc. Understandably, all electrical components in the aroma diffuser can be electrically connected to the main control board 160, and the main control board 160 can control the operation of each electrical component.

[0105] The main control board 160 may integrate operation buttons 161, which allow users to control the aroma diffuser, such as turning it on and off and setting a timer. It is understood that a keycap 171 may be abutted on the operation button 161, with the end of the keycap 171 away from the operation button 161 extending through the end cover 113 and exposed to the external environment for user access.

[0106] In this embodiment, the main control board 160 also integrates an indicator light group 162, which can be used for power display of the power supply 150, timing indication, etc. It is understood that a light guide column 172 can be provided on the light-emitting side of the indicator light group 162, extending to the end cover 113 and exposed relative to the end cover 113. Correspondingly, the light generated by the indicator light group 162 can be transmitted outward through the light guide column 172 for user viewing.

[0107] It is understood that the aroma diffuser provided in this embodiment is an anhydrous aroma diffuser. After the aroma diffuser is turned on, the main control board 160 can control the air pump 140 to work intermittently for intermittent aroma diffusion. Accordingly, the aroma diffuser can include two states after being turned on: a working state and a non-working state, and the working state and the non-working state alternate.

[0108] Combined again Figure 2The aroma diffuser also includes a human sensor 173, which can detect whether a user is approaching the diffuser. When the human sensor 173 detects that the distance between the user and the diffuser is less than a preset distance, the human sensor 173 can send a corresponding detection signal to the main control board 160. When the diffuser is in a non-working state at this time, the main control board 160 can control the air pump 140 to start for a period of time after receiving the detection signal, so that the diffuser switches from a non-working state to a working state and remains in a working state for a period of time (the duration can be set as needed) to provide a fragrance environment for the user. This can prevent the user from mistakenly thinking that the diffuser is malfunctioning and can also improve the user experience.

[0109] In some embodiments, the human-sensing structure 173 may be disposed at one end of the main housing 111 near the bottom housing 112. The human-sensing structure 173 may be one of an infrared sensor, a visual sensor, or an ultrasonic sensor to sense whether a user is approaching the aroma diffuser.

[0110] The diffuser also includes LED beads (not shown), which can be used to provide decorative, lighting, and other functions. In some embodiments, the LED beads can be mounted on the main control board 160, and the light generated by the LED beads can be transmitted outward through the light guide ring 134.

[0111] Combined again Figure 3 In this embodiment, the aroma diffuser also includes a light-sensing structure 174, which can be used to detect the brightness of the external environment. When the light-sensing structure 174 detects that the brightness of the external environment is lower than a preset brightness, such as when the lights are off at night, the light-sensing structure 174 can send a corresponding detection signal to the main control board 160, and the main control board 160 controls the lamp beads to turn off, so as not to disturb the user's rest. When the light-sensing structure 174 detects that the brightness of the external environment is higher than or equal to the preset brightness, such as during the day or when the external environment is lit, the light-sensing structure 174 can send a corresponding detection signal to the main control board 160, and the main control board 160 controls the lamp beads to light up. In some embodiments, the light-sensing structure 174 can be fixedly installed on the bottom shell 112. The light-sensing structure 174 can be selected from a structure such as a photoresistor or a visual detection device.

[0112] In this embodiment, when a user gets up at night, the human sensor 173 detects that the user is near the diffuser. The main control board 160 can simultaneously control the air pump 140 to start and the LED to light up based on the detection signal from the human sensor 173, which can provide the user with a night light function and improve the user experience.

[0113] Example 2

[0114] This embodiment provides a fragrance diffuser, which differs from Embodiment 1 in the following ways:

[0115] like Figure 1 ,Figure 8 , Figure 18 and Figure 19 As shown, in the atomizing mechanism 200, the first gas outlet 2111b of the gas channel 2111 is exposed relative to the atomizing chamber 221. The end of the first structure 2113 near the liquid outlet 2112b is exposed relative to the second structure 2114; that is, the liquid outlet 2112b is also exposed within the atomizing chamber 221. In this embodiment, the first structure 2113 can be fixedly installed on the second structure 2114 or the mounting sleeve 220 by means of bonding, snap-fitting, screw connection, etc.

[0116] When the atomizing nozzle 210 is in the first state 210a, the plug needle 2122 is sealed in the liquid outlet 2112b to close the liquid outlet 2112b. Accordingly, the diameter of the plug needle 2122 can be equal to the diameter of the liquid outlet 2112b.

[0117] Understandably, when the atomizing nozzle 210 atomizes the essential oil using flowing gas, the atomization process can occur directly in the atomizing chamber 221.

[0118] Example 3

[0119] This embodiment provides a fragrance diffuser, which differs from Embodiment 1 in the following ways:

[0120] like Figure 8 , Figures 20 to 24 As shown, in the atomizing nozzle 210, both the gas channel 2111 and the liquid channel 2112 are formed on the first structure 2113. The first structure 2113 also has an assembly cavity 21131. The assembly cavity 21131 can communicate with both the gas channel 2111 and the liquid channel 2112. One end of the second structure 2114 near the second through hole 21146 can be fixedly installed in the assembly cavity 21131, separating the gas channel 2111 from the liquid channel 2112. The end of the second structure 2114 with the second through hole 21146 can extend to the position of the liquid channel 2112.

[0121] In some embodiments, a transfer pipe 21132 may protrude from one end of the first structure 2113 away from the second structure 2114. An inlet 2112a may be formed at the end of the transfer pipe 21132 away from the second structure 2114. In an embodiment, the liquid channel 2112 may include a connected inlet section 2112c and a storage section 2112d. The inlet section 2112c may be formed in the transfer pipe 21132. The storage section 2112d is located at the end of the inlet section 2112c near the second structure 2114, and is opposite to the second structure 2114. In an embodiment, the storage section 2112d may be generally spherical. An outlet 2112b may be located in the storage section 2112d, and is opposite to the second through-hole 21146 on the second structure 2114.

[0122] The second structure 2114 is also provided with a third through hole 21148 and a fourth through hole 21149. Both the third through hole 21148 and the fourth through hole 21149 are connected to the end of the gas channel 2111 away from the air inlet 2111a. Accordingly, the third through hole 21148 can be used as a first air outlet 2111b, and the fourth through hole 21149 can be used as a second air outlet 2111c. In the embodiment, the third through hole 21148 can be located circumferentially in the first cavity 21145a, and at the end of the first cavity 21145a near the second cavity 21145b.

[0123] Furthermore, the piston component 212 is also provided with a flow channel 2123 with openings at both ends. Correspondingly, the flow channel 2123 may include a first opening structure 21231 and a second opening structure 21232. The first opening structure 21231 may be located circumferentially on the piston body 2121 and disposed on the side close to the gas passage 2111. The second opening structure 21232 may be located at the end of the stopper needle 2122 away from the piston body 2121.

[0124] When the atomizing nozzle 210 is in the first state 210a, the first opening structure 21231 can be misaligned with the third through hole 21148, that is, the flow channel 2123 is not connected to the gas channel 2111, which can block the movement of the volatile essential oil towards the air pump 140. At the same time, the plug needle 2122 can be inserted into the second through hole 21146 and the liquid outlet 2112b in sequence.

[0125] When the atomizing nozzle 210 is in the second state 210b, the first opening structure 21231 is opposite to and connected to the third through hole 21148, that is, the flow channel 2123 is connected to the gas channel 2111. The second opening structure 21232 can be moved to be flush with the second through hole 21146 or opposite to the second opening structure 21232, and at the same time, the liquid outlet 2112b opens. Thus, the flowing gas delivered by the air pump 140 can be delivered sequentially through the gas channel 2111 and the flow channel 2123 to the liquid outlet 2112b position, atomizing the essential oil at the liquid outlet 2112b into an aerosol and spraying it into the atomizing chamber 221.

[0126] Example 4

[0127] This embodiment provides a fragrance diffuser, which differs from Embodiment 3 in the following ways:

[0128] like Figure 25 and Figure 26 As shown, the third through hole 21148 may be located circumferentially in the first cavity 21145a, and at the end of the first cavity 21145a away from the second cavity 21145b. Furthermore, the piston member 212 may only include the piston body 2121.

[0129] When the atomizing nozzle 210 is in the first state 210a, the piston body 2121 can block the third through hole 21148 to block the liquid channel 2112 and the gas channel 2111, preventing the volatile essential oil from moving towards the air pump 140.

[0130] When the atomizing nozzle 210 is in the second state 210b, the piston body 2121 can be misaligned on the side of the third through hole 21148 away from the liquid channel 2112, and the third through hole 21148 and the second through hole 21146 are connected through the first cavity 21145a. Thus, the flowing gas output from the gas channel 2111 can be sequentially transported through the third through hole 21148, the first cavity 21145a and the second through hole 21146 to the liquid outlet 2112b to atomize the essential oil at the liquid outlet 2112b.

[0131] Example 5

[0132] This embodiment provides a fragrance diffuser, which differs from Embodiment 3 in the following ways:

[0133] like Figure 27 and Figure 28 As shown, the third through hole 21148 can be located circumferentially in the first cavity 21145a, and at the end of the first cavity 21145a away from the second cavity 21145b. The diameter of the plug needle 2122 can be smaller than the diameter of the second through hole 21146, that is, there is a gap between the plug needle 2122 and the inner wall of the second through hole 21146. In addition, no flow channel 2123 is formed in the piston component 212.

[0134] When the atomizing nozzle 210 is in the first state 210a, the piston body 2121 can block the third through hole 21148 to block the liquid passage 2112 and the gas passage 2111, preventing the volatile essential oil from moving towards the air pump 140. At the same time, the stopper needle 2122 can be inserted into the second through hole 21146 and the liquid outlet 2112b in sequence.

[0135] When the atomizing nozzle 210 is in the second state 210b, the piston body 2121 can be misaligned on the side of the third through hole 21148 away from the liquid channel 2112, and the third through hole 21148 can communicate with the first cavity 21145a. Additionally, the stopper needle 2122 can be separated from the liquid outlet 2112b to allow the liquid outlet 2112b to be fully open. Understandably, the gap between the stopper needle 2122 and the inner wall of the second through hole 21146 can communicate with the third through hole 21148 through the first cavity 21145a. Thus, the flowing gas output from the gas channel 2111 can be sequentially delivered to the liquid outlet 2112b through the third through hole 21148, the first cavity 21145a, the gap between the inner wall of the second through hole 21146 and the stopper needle 2122, to atomize the essential oil at the liquid outlet 2112b.

[0136] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A backflow-prevention atomizing nozzle, characterized in that, Including a first state (210a) and a second state (210b), the anti-backflow atomizing nozzle also includes a nozzle body (211) and a piston (212); The nozzle body (211) is provided with a gas channel (2111) and a liquid channel (2112). The gas channel (2111) includes an air inlet (2111a) and a first air outlet (2111b). The liquid channel (2112) includes a liquid inlet (2112a) and a liquid outlet (2112b). The first air outlet (2111b) is used to output flowing gas to form a negative pressure at the liquid outlet (2112b) and atomize the liquid output from the liquid outlet (2112b). The nozzle body (211) is also provided with a piston chamber (21145), and the gas passage (2111) further includes a second gas outlet (2111c), which is connected to the piston chamber (21145). The piston component (212) is slidably installed in the piston chamber (21145). When the anti-backflow atomizing nozzle is in the first state (210a), the piston (212) disconnects the connection between the first air outlet (2111b) and the liquid outlet (2112b); When the anti-backflow atomizing nozzle is in the second state (210b), the piston (212) moves under the action of the flowing gas output from the second air outlet (2111c) and connects the first air outlet (2111b) and the liquid outlet (2112b).

2. The anti-backflow atomizing nozzle according to claim 1, characterized in that, The anti-backflow atomizing nozzle also includes a reset member (213), which abuts against the side of the piston member (212) away from the second air outlet (2111c); The reset member (213) is used to drive the piston member (212) to reset, so as to disconnect the communication between the first air outlet (2111b) and the liquid outlet (2112b).

3. The anti-backflow atomizing nozzle according to claim 1 or 2, characterized in that, The nozzle body (211) includes opposing first structures (2113) and second structures (2114); The liquid channel (2112) is opened in the first structure (2113), and the liquid outlet (2112b) is located at one end of the first structure (2113) near the second structure (2114); The gas passage (2111) and the piston chamber (21145) are both located in the second structure (2114), the first gas outlet (2111b) is located on one side of the liquid outlet (2112b) in the circumferential direction, and the piston chamber (21145) is opposite to the second structure (2114).

4. The anti-backflow atomizing nozzle according to claim 3, characterized in that, The second structure (2114) is also provided with a vertical atomizing channel (21141) and a connecting channel (21143), and the second structure (2114) is also provided with a first through hole (21144) connecting the atomizing channel (21141) and the connecting channel (21143); The atomizing channel (21141) is connected to the first air outlet (2111b), and the end of the first structure (2113) near the liquid outlet (2112b) is sealed to the transition channel (21143). The liquid outlet (2112b) is opposite to and connected to the first through hole (21144).

5. The anti-backflow atomizing nozzle according to claim 4, characterized in that, The piston component (212) includes a piston body (2121) and a stopper needle (2122), wherein the stopper needle (2122) is connected to one end of the piston body (2121) near the second structure (2114); When the anti-backflow atomizing nozzle is in the first state (210a), the plug needle (2122) protrudes relative to the piston chamber (21145) and is sequentially inserted into the atomizing channel (21141) and the first through hole (21144) to disconnect the communication between the first air outlet (2111b) and the liquid outlet (2112b); When the anti-backflow atomizing nozzle is in the second state (210b), the plug needle (2122) is at least partially housed in the piston chamber (21145), and the first air outlet (2111b) and the liquid outlet (2112b) are connected.

6. The anti-backflow atomizing nozzle according to claim 3, characterized in that, The piston component (212) includes a piston body (2121) and a stopper needle (2122), wherein the stopper needle (2122) is connected to one end of the piston body (2121) near the second structure (2114); When the anti-backflow atomizing nozzle is in the first state (210a), the plug needle (2122) protrudes relative to the piston chamber (21145) and is sealed and inserted into the liquid outlet (2112b); When the anti-backflow atomizing nozzle is in the second state (210b), the plug needle (2122) is at least partially housed in the piston chamber (21145), and the first air outlet (2111b) and the liquid outlet (2112b) are connected.

7. The anti-backflow atomizing nozzle according to claim 1 or 2, characterized in that, The nozzle body (211) includes a first structure (2113) and a second structure (2114). The liquid channel (2112) and the gas channel (2111) are both opened in the first structure (2113), and the piston chamber (21145) is opened in the second structure (2114). One end of the second structure (2114) is disposed in the first structure (2113) and isolates the liquid channel (2112) and the gas channel (2111). The second structure (2114) is also provided with a second through hole (21146) and a third through hole (21148). The second through hole (21146) is connected between the piston chamber (21145) and the liquid channel (2112). The second through hole (21146) is opposite to and connected to the liquid outlet (2112b). The third through hole (21148) is connected between the piston chamber (21145) and the gas channel (2111). The piston (212) is also provided with a flow channel (2123) with openings at both ends. When the anti-backflow atomizing nozzle is in the first state (210a), the piston (212) blocks the third through hole (21148) on the side away from the gas passage (2111) to disconnect the second through hole (21146) and the third through hole (21148); When the anti-backflow atomizing nozzle is in the second state (210b), one end of the flow channel (2123) is connected to the third through hole (21148), and the other end of the flow channel (2123) is connected to the liquid outlet (2112b) through the second through hole (21146).

8. The anti-backflow atomizing nozzle according to claim 7, characterized in that, The liquid channel (2112) includes a liquid inlet section (2112c) and a liquid storage section (2112d) that are connected. The liquid storage section (2112d) is located at one end of the liquid inlet section (2112c) near the second structure (2114). The second through hole (21146) is in relative communication with the liquid storage section (2112d).

9. The anti-backflow atomizing nozzle according to claim 1 or 2, characterized in that, The nozzle body (211) includes a first structure (2113) and a second structure (2114). The liquid channel (2112) and the gas channel (2111) are both opened in the first structure (2113), and the piston chamber (21145) is opened in the second structure (2114). One end of the second structure (2114) is disposed in the first structure (2113) and isolates the liquid channel (2112) and the gas channel (2111). The second structure (2114) is also provided with a second through hole (21146) and a third through hole (21148). The second through hole (21146) is connected between the piston chamber (21145) and the liquid channel (2112). The second through hole (21146) is opposite to and connected to the liquid outlet (2112b). The third through hole (21148) is connected between the piston chamber (21145) and the gas channel (2111). When the anti-backflow atomizing nozzle is in the first state (210a), the piston (212) blocks the third through hole (21148) on the side away from the gas passage (2111) to disconnect the second through hole (21146) and the third through hole (21148); When the anti-backflow atomizing nozzle is in the second state (210b), the piston (212) is misaligned with the third through hole (21148), and the third through hole (21148) and the second through hole (21146) are connected through the piston chamber (21145).

10. The anti-backflow atomizing nozzle according to claim 9, characterized in that, The piston component (212) includes a piston body (2121) and a plug needle (2122). The plug needle (2122) is connected to one end of the piston body (2121) near the second through hole (21146). The diameter of the second through hole (21146) is larger than the diameter of the plug needle (2122).

11. A fragrance diffuser, characterized in that, Includes the anti-backflow atomizing nozzle as described in any one of claims 1 to 10.

12. The aroma diffuser according to claim 11, characterized in that, The aroma diffuser includes an atomizing mechanism (200), which includes a mounting sleeve (220), a silencer assembly (240), a manifold (250), and the anti-backflow atomizing nozzle. The mounting sleeve (220) includes an atomizing chamber (221), and the anti-backflow atomizing nozzle is installed in the atomizing chamber (221). The anti-backflow atomizing nozzle is used to atomize the essential oil to form an aerosol and deliver it to the atomizing chamber (221). The manifold (250) is connected to one end of the mounting sleeve (220), and the manifold (250) is provided with a diffuser (251) for connecting to the external environment; The silencing component (240) is connected between the atomizing chamber (221) and the diffuser (251).

13. The aroma diffuser according to claim 12, characterized in that, The noise reduction assembly (240) includes at least two stacked flow guiding structures, and each flow guiding structure has at least one through hole on its base plate; The at least one through hole on each of the two adjacent flow guiding structures is misaligned.

14. The aroma diffuser according to claim 13, characterized in that, The base plate is inclined relative to the axial direction of the aroma diffuser, and at least two through holes are provided on the base plate; On the same base plate, the vertical distance between at least one of the through holes and the diffuser (251) is smaller than the vertical distance between the other through holes and the diffuser (251).

15. The aroma diffuser according to any one of claims 11 to 14, characterized in that, The aroma diffuser also includes a liquid suction tube assembly (230), which includes a connecting tube (231), a telescopic tube (232), and an elastic element (233). One end of the connecting tube (231) is connected to the liquid inlet (2112a), one end of the telescopic tube (232) is slidably disposed in the connecting tube (231), and the other end of the telescopic tube (232) is used to connect to the essential oil bottle (400) containing the essential oil. One end of the elastic element (233) abuts against the telescopic tube (232), and the other end of the elastic element (233) abuts against the anti-backflow atomizing nozzle.

16. The aroma diffuser according to claim 12, characterized in that, The aroma diffuser also includes a main unit (100), which includes a housing assembly (110), a mounting bracket (120), an adapter (131), and an air pump (140); One end of the housing assembly (110) is provided with an assembly hole (1131). The mounting bracket (120) and the adapter (131) are installed in the housing assembly (110). The adapter (131) is located at the end of the mounting bracket (120) near the assembly hole (1131). The atomizing mechanism (200) is detachably connected to the adapter (131). The air pump (140) is installed in the mounting bracket (120) and is connected to the air inlet (2111a).

17. The aroma diffuser according to claim 16, characterized in that, The adapter (131) has at least two spiral grooves (1311) on its inner side. The mounting sleeve (220) has at least two sliding protrusions (225) on the side away from the atomizing chamber (221). The at least two sliding protrusions (225) are slidably engaged with the at least two spiral grooves (1311) in a one-to-one correspondence.

18. The aroma diffuser according to claim 16, characterized in that, The host (100) also includes a first sealing ring (132) and a second sealing ring (133). The first sealing ring (132) is disposed between the mounting bracket (120) and the adapter (131), and the second sealing ring (133) is disposed at one end of the adapter (131) and the housing assembly (110) near the assembly hole (1131). When the atomizing mechanism (200) is installed on the host (100), the atomizing mechanism (200) abuts against the first sealing ring (132) and the second sealing ring (133) respectively, and forms a closed cavity (310) around the atomizing mechanism (200) on the side of the first sealing ring (132) away from the second sealing ring (133).

19. The aroma diffuser according to any one of claims 16 to 18, characterized in that, The host (100) also includes a human-sensing structure (173) for detecting whether a user is near the diffuser. When the human-sensing structure (173) detects that the distance between the user and the aroma diffuser is less than a preset distance, it controls the air pump (140) to start.

20. The aroma diffuser according to any one of claims 16 to 18, characterized in that, The host (100) also includes an electrically connected LED bead and a light-sensing structural component (174), the light-sensing structural component (174) being used to detect the brightness of the external environment; When the light-sensing structure (174) detects that the brightness of the external environment is lower than the preset brightness, it controls the lamp beads to turn off.

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