Separated columnar fragrance diffuser

Abstract

The utility model provides a separation type columnar fragrance diffuser which comprises an essential oil bottle, an air pump, an essential oil pipe, a spray nozzle, an upper shell and a lower shell, the upper shell is detachably connected with the lower shell, the air pump is arranged in the upper shell, and the essential oil bottle is arranged in the lower shell; the spray nozzle is arranged between the air pump and the essential oil bottle, a mist outlet is formed in the top of the upper shell, and the mist outlet is communicated with the output end of the spray nozzle through a mist outlet channel; the spray nozzle comprises an air inlet part and a liquid inlet part, the air inlet part is arranged at the upper end of the liquid inlet part, an air outlet hole is formed in the bottom of the air inlet part, a liquid outlet hole is formed in the side wall of the liquid inlet part and located below the air outlet hole, and the center line of the liquid outlet hole is perpendicular to the center line of the air outlet hole; the output end of the air pump is connected with the air inlet part, the upper end of the essential oil pipe is connected with the liquid inlet part, and the lower end of the essential oil pipe is inserted into the essential oil bottle. The essential oil atomizing nozzle has the advantages that the atomizing effect of essential oil can be improved, the atomizing nozzle is integrally formed and manufactured, the structure is very simple, manufacturing is very convenient, vibration is not prone to occurring, and noise is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fragrance diffuser, especially to a separated columnar fragrance diffuser. BACKGROUND

[0002] In order to improve the living environment, people often fill the bottle with perfume, and then insert fresh flowers or other cotton heads, etc. to diffuse the fragrance in the bottle to the environment to achieve the effect of incense. However, by using this method, the perfume volatilizes freely by its own characteristics, and the perfume is not fully atomized. In order to improve this situation, the existing technology has developed a fragrance diffuser.

[0003] The fragrance diffuser is also called aromatherapy machine, fragrance machine, fragrance instrument, fragrance adding machine, fragrance diffuser, essential oil fragrance diffuser, etc. in the industry. The working principle of the fragrance diffuser is that compressed air is generated by an air pump and sprayed out, so that the compressed air hits the fragrance essential oil at high speed, the fragrance essential oil is atomized into small fragrance molecules and sprayed into the air from the spray channel, and the whole space is filled with fragrance as the air spreads.

[0004] The Chinese utility model patent with the application number CN202310675086.7 discloses a new fragrance diffuser. However, the fragrance diffuser has the following defects:

[0005] 1. The air pump is arranged above the essential oil bottle, which causes the center of gravity of the whole product to be biased upward, and vibration is easily generated during work, and the working noise is large.

[0006] 2. The gas of the air pump needs to extend to the first gas cavity in the first gap and the first air hole in sequence, and then pass to the air inlet on the atomizing core to provide gas for the atomizing core to realize atomization. The whole spray structure is relatively complex, inconvenient to manufacture, and the atomization effect is poor.

[0007] In view of the above-mentioned problems, the present inventors have conducted in-depth research on the problem, and thus the present case is produced. UTILITY MODEL CONTENTS

[0008] The technical problem to be solved by the utility model is to provide a separated columnar fragrance diffuser, which solves the problems of the existing fragrance diffuser, such as easy vibration during work, large working noise, complex spray structure, and poor atomization effect.

[0009] The utility model is implemented in the following manner: a separated columnar fragrance diffuser, which comprises an essential oil bottle, an air pump, an essential oil pipe, a spray nozzle, an upper shell and a lower shell, the upper shell and the lower shell are detachably connected, the air pump is arranged in the upper shell, and the essential oil bottle is arranged in the lower shell; the spray nozzle is arranged between the air pump and the essential oil bottle, the top of the upper shell is provided with a mist outlet, and the mist outlet is connected with the output end of the spray nozzle in communication through a mist outlet channel;

[0010] The spray nozzle comprises an air inlet part and a liquid inlet part, the air inlet part is arranged at the upper end of the liquid inlet part, the bottom of the air inlet part forms an air outlet hole, the side wall of the liquid inlet part forms a liquid outlet hole, the liquid outlet hole is below the air outlet hole, the center line of the liquid outlet hole is perpendicular to the center line of the air outlet hole; the output end of the air pump is connected with the air inlet part, the upper end of the essential oil pipe is connected with the liquid inlet part, and the lower end of the essential oil pipe is inserted into the essential oil bottle.

[0011] Further, the air inlet part and the liquid inlet part are integrally formed by injection molding with POM plastic.

[0012] Further, the side wall of the liquid inlet part forms an extension protrusion, the top of the extension protrusion forms a first inclined surface gradually inclined outward from top to bottom, the bottom of the extension protrusion forms a second inclined surface gradually inclined inward from top to bottom, and a vertical plane is formed between the first inclined surface and the second inclined surface; the liquid outlet hole is arranged on the second inclined surface, and the middle part of the air outlet hole is aligned with the vertical plane.

[0013] Further, the diameter of the air outlet hole is smaller than the diameter of the liquid outlet hole.

[0014] Further, it further comprises an inner support, a support upper cover, a support lower cover and an upper bottom cover.

[0015] The support lower cover is sealingly assembled at the bottom of the inner support, the lower end of the support lower cover is inserted into the upper end of the essential oil bottle, and the support upper cover is sealingly assembled at the top of the inner support; the inner support is assembled in the upper shell, the air pump is installed on the inner support, and the spray nozzle is arranged in the inner part of the support lower cover.

[0016] The upper bottom cover is sleeved outside the support lower cover, the upper end of the upper bottom cover is connected with the inner support and the upper shell, and the lower part of the upper bottom cover is screwed with the essential oil bottle; the inner support is provided with at least two mist outlet channels in the vertical direction around the air pump, and the lower end of the mist outlet channel is communicated with the inner part of the support lower cover.

[0017] Further, the inner sleeve is arranged in the inner part of the lower shell, and the lower end of the inner sleeve is connected with the lower shell; the essential oil bottle and the upper bottom cover are installed in the inner sleeve.

[0018] The inner wall of the inner sleeve is provided with at least two rotating assembly clamping grooves, the outer wall of the upper bottom cover is provided with at least two rotating assembly clamping blocks, and the inner sleeve and the upper bottom cover are detachably connected through the rotating assembly clamping grooves and the rotating assembly clamping blocks.

[0019] Further, it further comprises a battery, a wireless charging receiving coil, a wireless charging base, a key, a circuit board and a conductive thimble.

[0020] The conductive thimble is arranged on the upper bottom cover and electrically connected with the air pump, the inner wall of the inner sleeve is provided with a thimble joint, and the conductive thimble is inserted into the thimble joint.

[0021] The battery, the wireless charging receiving coil and the circuit board are arranged at the bottom of the lower shell, the button is arranged on the outside of the lower shell, and the thimble joint, the battery, the wireless charging receiving coil and the button are electrically connected with the circuit board.

[0022] Further, the bottom of the lower shell is provided with a supporting base, the outer diameter of the supporting base is greater than that of the lower shell, and the bottom of the supporting base is provided with an anti-skid foot pad; and the battery, the wireless charging receiving coil and the circuit board are arranged in the supporting base.

[0023] Further, the outer surface of the air pump is wrapped with sound insulation cotton.

[0024] Further, the lower end of the essential oil pipe is provided with a filtering structure.

[0025] By adopting the technical scheme of the utility model, at least the following beneficial effects are achieved:

[0026] 1. By designing the spray nozzle to comprise an integrally formed air inlet portion and liquid inlet portion, forming an air outlet hole at the bottom of the air inlet portion and an liquid outlet hole in the side wall of the liquid inlet portion, and arranging the air outlet hole and the liquid outlet hole at 90°, on the one hand, the high-speed airflow sprayed can vertically impact the essential oil, thereby improving the atomization effect of the essential oil; on the other hand, the entire spray nozzle is integrally formed, the structure is very simple, manufacturing is very convenient, the product structure size is accurate and stable, mass production can be facilitated, the spray nozzle can also be resistant to essential oil corrosion, and the service life of the spray nozzle can be improved.

[0027] 2. The housing comprises a detachably connected upper shell and lower shell, the air pump is arranged in the upper shell, and the essential oil bottle is arranged in the lower shell, that is, the essential oil bottle is arranged at the lower position of the fragrance diffuser, and the air pump is arranged at the upper position of the fragrance diffuser, so that the gravity center of the entire product can be effectively reduced, vibration is not easy to occur during work, vibration is not easy to transmit to the desktop, and work noise can be reduced.

[0028] 3. By setting an inner support in the upper shell, sealingly arranging a support lower cover at the bottom of the inner support, inserting the lower end of the support lower cover into the upper end of the essential oil bottle, arranging the spray nozzle inside the support lower cover, and arranging at least two mist outlets in the vertical direction on the inner support, the essential oil mist sprayed by the spray nozzle can pass through the mist outlet after passing through the mist outlet in the upward direction during specific work, which not only effectively attenuates the sharp sound generated by the spray nozzle and reduces the working noise, but also ensures that the essential oil mist sprayed from the top of the product is more delicate. BRIEF DESCRIPTION OF DRAWINGS

[0029] The utility model will be further explained in connection with the embodiments with reference to the drawings.

[0030] Figure 1 is a perspective view of a separate columnar fragrance diffuser of the utility model;

[0031] Figure 2 is a sectional view of a separate columnar fragrance diffuser of the utility model;

[0032] Figure 3 is an exploded view of a separate columnar fragrance diffuser of the utility model;

[0033] Figure 4 is one of the perspective views of the spray nozzle in the utility model;

[0034] Figure 5 is the second perspective view of the spray nozzle in the utility model;

[0035] Figure 6 is a sectional view of the spray nozzle in the utility model.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] The fragrance diffuser 100;

[0038] The essential oil bottle 1;

[0039] The air pump 2, the soundproof cotton 21;

[0040] The essential oil pipe 3, the filter structure 31;

[0041] The spray nozzle 4, the air inlet part 41, the air outlet hole 411, the liquid inlet part 42, the liquid outlet hole 421, the extension convex part 422, the first inclined surface 4221, the second inclined surface 4222, the vertical plane 4223;

[0042] The upper shell 5, the mist outlet 51, the mist outlet 52;

[0043] Lower housing 6, inner sleeve 61, rotating assembly slot 611, support base 62, anti-slip pad 621;

[0044] Inner support 71, upper support cover 72, lower support cover 73, upper bottom cover 74, rotating assembly block 741;

[0045] Battery 81, wireless charging receiver coil 82, wireless charging base 83, button 84, circuit board 85, conductive pin 86.

Detailed Implementation Methods

[0046] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] It should be noted that 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 used solely for the convenience of describing these embodiments and for 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0048] Please see Figures 1 to 6 As shown, this utility model discloses a detachable columnar diffuser 100. The diffuser 100 includes an essential oil bottle 1, an air pump 2, an essential oil tube 3, a spray nozzle 4, an upper shell 5, and a lower shell 6. The upper shell 5 and the lower shell 6 are detachably connected. The air pump 2 is located inside the upper shell 5, and the essential oil bottle 1 is located inside the lower shell 6. Because the upper shell 5 and the lower shell 6 are detachably connected, the essential oil bottle 1 can be removed from the lower shell 6 during use, making it convenient to add essential oil to the essential oil bottle 1. The spray nozzle 4 is located between the air pump 2 and the essential oil bottle 1. The top of the upper shell 5 has a mist outlet 51, which is connected to the output end of the spray nozzle 4 through a mist outlet channel 52, so that the essential oil mist generated by the spray nozzle 4 can be output through the mist outlet channel 52 and the mist outlet 51.

[0049] The spray nozzle 4 comprises an air inlet part 41 and a liquid inlet part 42, the air inlet part 41 is arranged at the upper end of the liquid inlet part 42, the bottom of the air inlet part 41 is formed with an air outlet hole 411 for high-speed gas ejection, the side wall of the liquid inlet part 42 is formed with a liquid outlet hole 421 for essential oil ejection, the liquid outlet hole 421 is below the air outlet hole 411, the center line of the liquid outlet hole 421 is perpendicular to the center line of the air outlet hole 411, that is, the air outlet hole 411 and the liquid outlet hole 421 are arranged at 90°, so that the high-speed airflow ejected can vertically impact the essential oil, thereby achieving better atomization effect; the output end of the air pump 2 is connected with the air inlet part 41, the upper end of the essential oil pipe 3 is connected with the liquid inlet part 42, and the lower end of the essential oil pipe 3 is inserted into the essential oil bottle 1 to realize the extraction of essential oil from the essential oil bottle 1. When the spray nozzle 4 works, the gas generated by the air pump 2 is ejected through the air outlet hole 411 of the air inlet part 41, thereby generating strong high-speed airflow, the ejection of high-speed airflow causes the air pressure difference inside and outside the liquid outlet hole 421, thereby realizing the extraction of essential oil and the ejection of essential oil through the liquid outlet hole 421, and the ejected essential oil is mixed with the high-speed airflow to achieve the atomization effect.

[0050] In some embodiments of the utility model, the air inlet part 41 and the liquid inlet part 42 are integrally formed by POM plastic injection molding. By integrally forming the spray nozzle 4 by POM plastic injection molding of the air inlet part 41 and the liquid inlet part 42, the manufacturing is convenient, and the POM plastic can resist essential oil corrosion, thereby prolonging the service life of the spray nozzle 4.

[0051] By adopting the above technical scheme of the utility model, at least the following beneficial effects are achieved:

[0052] 1. By designing the spray nozzle 4 to comprise the integrally formed air inlet part 41 and liquid inlet part 42, forming the air outlet hole 411 in the bottom of the air inlet part 41 and the liquid outlet hole 421 in the side wall of the liquid inlet part 42, and arranging the air outlet hole 411 and the liquid outlet hole 421 at 90°, on the one hand, the high-speed airflow ejected can vertically impact the essential oil, thereby improving the atomization effect of the essential oil, and on the other hand, the entire spray nozzle 4 is integrally formed, the structure is very simple, the manufacturing is very convenient, the product structure size is accurate and stable, mass production can be realized conveniently, the spray nozzle 4 can resist essential oil corrosion, and the service life of the spray nozzle 4 is improved.

[0053] 2. The housing comprises the detachably connected upper housing 5 and lower housing 6, the air pump 2 is arranged in the upper housing 5, and the essential oil bottle 1 is arranged in the lower housing 6, that is, the essential oil bottle 1 is arranged at the lower position of the fragrance diffuser 100, and the air pump 2 is arranged at the upper position of the fragrance diffuser 100, so that the gravity center of the entire product can be effectively lowered, vibration is not easy to occur during work, vibration is not easy to transmit to the table top, and work noise can be reduced.

[0054] In some embodiments of the utility model, in order to make the high-speed airflow that air inlet part 41 outputs can better impact essential oil and realize atomization effect, the side wall of liquid inlet part 42 is formed with extension protruding part 422, the top of extension protruding part 422 is formed with first inclined plane 4221 that gradually inclines outward from top to bottom, the bottom of extension protruding part 422 is formed with second inclined plane 4222 that gradually inclines inward from top to bottom, vertical plane 4223 is formed between first inclined plane 4221 and second inclined plane 4222, liquid outlet hole 421 is arranged on second inclined plane 4222, the middle part of air outlet hole 411 is aligned with vertical plane 4223.

[0055] In some embodiments of the utility model, in order to guarantee that air outlet hole 411 can spray powerful high-speed airflow, so as to realize essential oil extraction by using air pressure difference, the aperture of air outlet hole 411 is less than the aperture of liquid outlet hole 421.As a specific embodiment of the utility model, the aperture of air outlet hole 311 is 0.25mm, and the aperture of liquid outlet hole 321 is 0.35mm.

[0056] In some embodiments of the utility model, the fragrance diffuser 100 further comprises an inner support 71, a support upper cover 72, a support lower cover 73 and an upper bottom cover 74.

[0057] The support lower cover 73 is sealingly assembled at the bottom of the inner support 71 to achieve a sealing effect, and the lower end of the support lower cover 73 is inserted into the upper end of the essential oil bottle 1. The support upper cover 72 is sealingly assembled at the top of the inner support 71 to achieve a sealing effect. The inner support 71 is assembled in the upper housing 5, and the air pump 2 is installed on the inner support 71, specifically in a suspended and inverted manner, to reduce the vibration generated during operation. The spray nozzle 4 is arranged inside the support lower cover 73 to atomize essential oil on the inner wall of the support lower cover 73.

[0058] The upper bottom cover 74 is sleeved outside the support lower cover 73, and the upper end of the upper bottom cover 74 is connected with the inner support 71 and the upper housing 5. Specifically, the upper bottom cover 74, the inner support 71 and the upper housing 5 can be connected together by screws. The lower part of the upper bottom cover 74 is screwed with the essential oil bottle 1. By screwing the essential oil bottle 1 with the lower part of the upper bottom cover 74, the essential oil bottle 1 can be easily disassembled. The inner support 71 is provided with at least two mist outlet channels 52 around the air pump 2 in the vertical direction. The lower end of the mist outlet channel 52 is connected with the inside of the support lower cover 73, so that the essential oil mist generated in the inside of the support lower cover 73 can be transported upward through the mist outlet channel 52 and sprayed out of the mist outlet 51.

[0059] The utility model discloses a set up inner support 71 in the upper casing 5, the bottom of inner support 71 is equipped with the support lower cover 73, and the lower end of support lower cover 73 is inserted to the upper end of essential oil bottle 1, and the spray nozzle 4 is arranged in the inside of support lower cover 73, and at least two mist outlet channels 52 are arranged on the inner support 71 along the vertical direction, so that in the specific work, the essential oil mist that the spray nozzle 4 sprays will be sprayed by the mist outlet 51 after passing through the mist outlet channel 52 upwards, which not only effectively attenuates the sharp sound produced by the spray nozzle 4, but also reduces the working noise, and the large particle essential oil mist will adhere to the inner wall of the mist outlet channel 52 in the process of passing through the mist outlet channel 52 upwards, so that the essential oil mist sprayed from the top of the product is more delicate.

[0060] In some embodiments of the utility model, the inside of the lower casing 6 is provided with an inner sleeve 61, the lower end of the inner sleeve 61 is connected with the lower casing 6, and the lower end of the inner sleeve 61 can be connected with the lower casing 6 by screws or the like, so that the inner sleeve 61 and the lower casing 6 form an integral whole; the essential oil bottle 1 and the upper bottom cover 74 are installed in the inner sleeve 61;

[0061] The inner wall of the inner sleeve 61 is provided with at least two rotating assembly clamping grooves 611, the outer wall of the upper bottom cover 74 is provided with at least two rotating assembly clamping blocks 741, the inner sleeve 61 and the upper bottom cover 74 are detachably connected through the rotating assembly clamping grooves 611 and the rotating assembly clamping blocks 741, that is, the upper casing 5 and the lower casing 6 are detachably connected through the rotating assembly clamping grooves 611 on the inner sleeve 61 and the rotating assembly clamping blocks 741 on the upper bottom cover 74.

[0062] In some embodiments of the utility model, the fragrance diffuser 100 further includes a battery 81, a wireless charging receiving coil 82, a wireless charging base 83, a key 84, a circuit board 85 and a conductive thimble 86; wherein: the battery 81 is used for providing the required power supply for the work of the circuit board 85 and the air pump 2, so that the fragrance diffuser 100 can work without being plugged in; the wireless charging receiving coil 82 is used for cooperating with the wireless charging base 83 to realize the charging function, and the working principle and specific structure of wireless charging are well known to those skilled in the art, so they will not be described in detail here; the key 84 is used for realizing the control of spraying in the form of pressing; the circuit board 85 is used for controlling the work of the air pump 2 and the like.

[0063] The conductive thimble 86 is arranged on the upper bottom cover 74 and is electrically connected with the air pump 2, the inner wall of the inner sleeve 61 is provided with a thimble joint (not shown), and the conductive thimble 86 is inserted on the thimble joint, in the specific use process, when the inner sleeve 61 is assembled with the upper bottom cover 74, the conductive thimble 86 is inserted into the thimble joint to realize electrical contact, so as to provide power supply for the air pump 2 to work, and when the inner sleeve 61 is disassembled from the upper bottom cover 74, the conductive thimble 86 is pulled out of the thimble joint, so as to realize separation.

[0064] The battery 81, the wireless charging receiving coil 82 and the circuit board 85 are arranged at the bottom of the lower shell 6, so that the lower shell 6 protects the battery 81, the wireless charging receiving coil 82 and the circuit board 85; the key 84 is arranged outside the lower shell 6, so that the key 84 is convenient to install; and the thimble joint, the battery 81, the wireless charging receiving coil 82 and the key 84 are electrically connected with the circuit board 85. As a specific embodiment of the utility model, three keys 84 can be arranged outside the lower shell 6, wherein: the first key 84 is a control of a spray strength mode, and can control the size of the spray; the second key 84 is a control of a timing mode, and is provided with three different time periods of opening 60s and stopping 600s, opening 60s and stopping 300s and opening 60s and stopping 60s; and the third key 84 is an APP Bluetooth function, and can be connected with an APP on a mobile phone through Bluetooth, and the APP can set different time working modes according to individual needs.

[0065] In some embodiments of the utility model, the bottom of the lower shell 6 is provided with a supporting base 62, the outer diameter of the supporting base 62 is greater than that of the lower shell 6, so as to ensure the stability of the whole fragrance diffuser 100 and prevent it from falling during use, and the bottom of the supporting base 62 is provided with anti-skid foot pads 621, so that the bottom anti-skid function is increased and the product vibration is reduced to the desktop; the battery 81, the wireless charging receiving coil 82 and the circuit board 85 are arranged inside the supporting base 62, so that the battery 81, the wireless charging receiving coil 82 and the circuit board 85 are protected, and the weight of the whole supporting base 62 is increased by the battery 81, the wireless charging receiving coil 82 and the circuit board 85, so as to further improve the stability of the fragrance diffuser 100.

[0066] In some embodiments of the utility model, the outer surface of the air pump 2 is wrapped with sound insulation cotton 21, so that the sound insulation cotton 21 plays a sound insulation effect, and the working noise of the fragrance diffuser 100 is further reduced.

[0067] In some embodiments of the utility model, the lower end of the essential oil pipe 3 is provided with a filter structure 31, that is, a filter is arranged at the lower end of the essential oil pipe 3, so that large-particle impurities in the essential oil can be effectively prevented from being sucked up, thereby avoiding the essential oil pipe 4 from being blocked and unable to work normally.

[0068] As a specific embodiment of the utility model, the upper shell 5, the lower shell 6, the inner support 71, the support upper cover 72, the support lower cover 73 and the upper bottom cover 74 are all made of plastic material, so as to effectively reduce the overall weight of the fragrance diffuser 100; meanwhile, the upper shell 5 and the lower shell 6 are both cylindrical structures, so that the entire fragrance diffuser 100 is in the form of a high and thin cylindrical structure, and the product is more beautiful.

[0069] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that the specific embodiments described by us are only illustrative, but not used to limit the scope of the utility model, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the utility model should be covered within the scope of protection of the claims of the utility model.

Claims

1. A separate columnar fragrance diffuser, comprising an essential oil bottle, an air pump and an essential oil tube; characterized in that: The spray nozzle, the upper shell and the lower shell are detachably connected, the air pump is arranged in the upper shell, and the essential oil bottle is arranged in the lower shell; the spray nozzle is arranged between the air pump and the essential oil bottle, the top of the upper shell is provided with a mist outlet, and the mist outlet is connected with the output end of the spray nozzle through a mist outlet channel; The spray nozzle comprises an air inlet part and a liquid inlet part, the air inlet part is arranged at the upper end of the liquid inlet part, the bottom of the air inlet part forms an air outlet hole, the side wall of the liquid inlet part is provided with a liquid outlet hole, the liquid outlet hole is located below the air outlet hole, and the center lines of the liquid outlet hole and the air outlet hole are perpendicular to each other; the output end of the air pump is connected with the air inlet part, and the upper end of the essential oil pipe is connected with the liquid inlet part, and the lower end of the essential oil pipe is inserted into the essential oil bottle.

2. The separate columnar fragrance diffuser according to claim 1, wherein: The air inlet part and the liquid inlet part are integrally formed by injection molding of POM plastic.

3. The separate columnar fragrance diffuser according to claim 1, wherein: The side wall of the liquid inlet part is provided with an extension protrusion, the top of the extension protrusion is provided with a first inclined surface which gradually inclines outward from top to bottom, the bottom of the extension protrusion is provided with a second inclined surface which gradually inclines inward from top to bottom, and a vertical plane is formed between the first inclined surface and the second inclined surface; the liquid outlet hole is arranged on the second inclined surface, and the middle part of the air outlet hole is aligned with the vertical plane.

4. The separate columnar fragrance diffuser according to claim 1, wherein: The diameter of the air outlet hole is smaller than that of the liquid outlet hole.

5. A separate columnar fragrance diffuser according to any one of claims 1 to 4, characterized in that: The inner support, the support upper cover, the support lower cover and the upper bottom cover are further included. The support lower cover is sealingly assembled at the bottom of the inner support, the lower end of the support lower cover is inserted into the upper end of the essential oil bottle, and the support upper cover is sealingly assembled at the top of the inner support; the inner support is assembled in the upper shell, the air pump is mounted on the inner support, and the spray nozzle is arranged in the inner part of the support lower cover; The upper bottom cover is sleeved on the outer part of the support lower cover, the upper end of the upper bottom cover is connected with the inner support and the upper shell, and the lower part of the upper bottom cover is screwed with the essential oil bottle; at least two mist outlet channels are arranged in the vertical direction around the air pump.

6. The separate columnar fragrance diffuser according to claim 5, characterized in that: The inner sleeve is arranged in the inner part of the lower shell, and the lower end of the inner sleeve is connected with the lower shell; The inner wall of the inner sleeve is provided with at least two rotating assembly clamping grooves, the outer wall of the upper bottom cover is provided with at least two rotating assembly clamping blocks, and the inner sleeve and the upper bottom cover are detachably connected through the rotating assembly clamping grooves and the rotating assembly clamping blocks.

7. The separate columnar fragrance diffuser according to claim 6, characterized in that: The battery, the wireless charging receiving coil, the wireless charging base, the key, the circuit board and the conductive thimble are further included. The conductive thimble is arranged on the upper bottom cover and electrically connected with the air pump, the inner wall of the inner sleeve is provided with a thimble joint, and the conductive thimble is inserted into the thimble joint; The battery, the wireless charging receiving coil and the circuit board are arranged in the bottom of the lower shell, the key is arranged on the outer part of the lower shell, and the thimble joint, the battery, the wireless charging receiving coil and the key are electrically connected with the circuit board.

8. The separate columnar fragrance diffuser according to claim 7, characterized in that: The bottom of the lower shell is provided with a support base, the outer diameter of the support base is larger than that of the lower shell, and the bottom of the support base is provided with an anti-skid foot pad; the battery, the wireless charging receiving coil and the circuit board are arranged in the inner part of the support base.

9. The separate columnar fragrance diffuser according to claim 1, wherein: The outer surface of the air pump is wrapped with sound insulation cotton.

10. The separate columnar fragrance diffuser according to claim 1, wherein: The lower end of the essential oil pipe is provided with a filtering structure.

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