A fragrance system

Abstract

The present invention discloses a fragrance system, comprising: a housing, a housing provided with a receiving chamber, a first chamber and a second chamber provided inside the housing, the receiving chamber and the first chamber being connected via a first vent, the receiving chamber and the second chamber being connected via a second vent, an air inlet and an air outlet provided on the housing, the air inlet and the first chamber being connected, the air outlet and the second chamber being connected; a fragrance bomb, the fragrance bomb being arranged in the receiving chamber; a piston assembly, the piston assembly being movably arranged inside the housing, the piston assembly having at least two piston bodies, the two piston bodies being arranged corresponding to the first vent and the second vent, respectively. The present invention facilitates the opening and closing of the fragrance, and can improve the sealing of the fragrance system during the fragrance transmission process.

Description

Technical Field

[0001] The present invention relates to the field of fragrance technology, and in particular to a fragrance system. Background Art

[0002] With the rapid development of the automobile industry and the improvement of people's living standards, cars are no longer just a means of transportation. Comfortable driving and riding environment has become a hot topic for consumers when choosing cars. Therefore, the air environment inside the car has become increasingly important, making the car fragrance system active in the automobile industry. The car fragrance system can purify the air inside the car, remove the odor in the car through the fragrance it emits, relieve fatigue, avoid drowsiness while driving, relax the fatigue of driving, and improve driving safety.

[0003] The existing vehicle-mounted fragrance system has poor sealing when performing fragrance control, which is not conducive to the transmission of fragrance. Moreover, the fragrance is easy to contact the components inside the shell during the internal transmission of the fragrance system shell, especially leaking into the control system, which is easy to corrode the control system. Summary of the invention

[0004] The present invention provides a fragrance system, which is convenient for opening and closing the fragrance and can improve the sealing performance of the fragrance system during the fragrance propagation process.

[0005] In order to solve the above technical problems, the present invention provides a fragrance system, comprising:

[0006] A shell, wherein a receiving cavity is provided on the shell, and a first cavity and a second cavity are further provided inside the shell, wherein the receiving cavity is communicated with the first cavity through a first vent, and the receiving cavity is communicated with the second cavity through a second vent, and an air inlet and an air outlet are further provided on the shell, wherein the air inlet is communicated with the first cavity, and the air outlet is communicated with the second cavity;

[0007] A fragrance bomb, wherein the fragrance bomb is arranged in the accommodating cavity;

[0008] A piston assembly, the piston assembly is movably disposed inside the housing, the piston assembly comprises at least two piston bodies, and the two piston bodies are respectively disposed corresponding to the first vent and the second vent;

[0009] a driving assembly connected to the piston assembly, the driving assembly being used to drive the piston assembly to move in a first direction to reach a first position, and the driving assembly being also used to drive the piston assembly to move in a second direction to reach a second position, when the piston assembly is in the first position, the two piston bodies can respectively close the first vent and the second vent, and when the piston assembly is in the second position, the two piston bodies are respectively separated from the first vent and the second vent;

[0010] The fan is arranged inside the shell.

[0011] As a preferred embodiment of the above technical solution, the piston assembly also includes a connecting column, and two connecting parts are symmetrically arranged on both sides of the connecting column, and the upper ends of the two connecting parts are respectively connected to the lower ends of the two piston bodies, and the upper ends of the two piston bodies are respectively used to cooperate with the first vent and the second vent.

[0012] As a preferred embodiment of the above technical solution, the piston body includes an upper sleeve and a lower sleeve, the wall portion of the upper sleeve is provided with a first opening, the wall portion of the lower sleeve is provided with a second opening, the wall portion of the lower sleeve is provided with an elastic portion located in the second opening, the lower end of the elastic portion is provided with a limiting protrusion protruding outward, the lower sleeve is inserted in the upper sleeve, the first opening corresponds to the second opening, and the lower end of the limiting protrusion is pressed against the lower end surface of the first opening.

[0013] As a preferred embodiment of the above technical solution, a disc body is provided at the upper end of the piston body, and a truncated cone-shaped sealing portion is provided at the upper part of the disc body, and the sealing portion is used to be inserted into the lower ends of the first vent and the second vent to close the first vent and the second vent.

[0014] As a preferred embodiment of the above technical solution, the driving assembly includes a cam, a camshaft, a driving motor and a return spring, the cam is installed on the camshaft, the camshaft is connected to the main shaft of the driving motor, the driving motor is used to drive the camshaft to rotate, the cam is in contact with the piston assembly, the cam is used to drive the piston assembly to move in a first direction, the return spring is in elastic contact with the piston assembly, and the return spring is used to drive the piston assembly to move in a second direction.

[0015] As a preferred embodiment of the above technical solution, the bottom of the accommodating cavity has a first bottom plate, the first chamber and the second chamber are located below the first bottom plate, the first vent and the second vent are opened on the first bottom plate, the bottom of the first chamber and the second chamber has a second bottom plate, the first bottom plate and the second bottom plate are parallel to each other, the second bottom plate is provided with a first mounting hole and a second mounting hole, the first piston body and the second piston body are movably provided in the first mounting hole and the second mounting hole respectively, and a partition is provided between the first chamber and the second chamber.

[0016] As a preferred embodiment of the above technical solution, a positioning column is extended downward from the lower surface of the second bottom plate, the connecting column is located below the positioning column, the return spring is sleeved on the positioning column, and an accommodating opening is provided at the upper end of the connecting column. The upper end of the return spring elastically presses against the lower surface of the second bottom plate, and the lower end of the return spring elastically presses against the accommodating opening.

[0017] As a preferred embodiment of the above technical solution, the cam is located below the connecting column, and the cam is in contact with the lower end of the connecting column.

[0018] As a preferred embodiment of the above technical solution, there are multiple accommodating chambers, each of which is provided with a fragrance bomb, the number of the cams and the piston assemblies corresponds to the number of the accommodating chambers, and the shapes of the multiple cams are the same or different.

[0019] As a preferred embodiment of the above technical solution, a relatively closed ventilation duct is arranged inside the shell, the air outlet of the fan is connected to the air outlet, one end of the ventilation duct is connected to the air intake port of the fan, and the other end of the ventilation duct is connected to the second chamber.

[0020] The present invention provides a fragrance system, which includes a shell, a fragrance bomb, a piston assembly, a driving assembly and a fan, the shell being provided with a accommodating chamber, a first chamber and a second chamber, the accommodating chamber and the first chamber being interconnected through a first vent, and the accommodating chamber and the second chamber being interconnected through a second vent, the fragrance bomb is placed in the accommodating chamber for diffusing fragrance, and when working, the driving assembly drives the piston assembly to move in a first direction so that the piston assembly reaches a first position, and since the two piston bodies of the piston assembly are arranged corresponding to the first vent and the second vent, the two piston bodies respectively approach the first vent and the second vent during the movement of the piston assembly in the first direction, and when the piston assembly is in the first position, the two piston bodies can block the first vent and the second vent, and at this time the entire accommodating chamber is in a sealed state, and the fragrance will not diffuse out, and the driving assembly drives the piston assembly to move in the second direction so that the piston assembly reaches When the second position is reached, the two piston bodies are respectively away from the first vent and the second vent during the movement of the piston assembly in the second direction. When the piston assembly is in the second position, the piston body can be separated from the first vent and the second vent. At this time, the first vent and the second vent are in an open state. The air flowing under the drive of the fan enters the first chamber from the air inlet, and then enters the accommodating chamber from the first chamber through the first vent, and then enters the second chamber through the second vent, and then is blown out from the air outlet through the second chamber. During the whole process, the fragrance will not spread to other spaces of the shell, and the sealing effect is better, which can effectively prevent the fragrance from corroding other components inside the shell. In addition, due to its better sealing performance, it can further enhance the effect of the fragrance circulation. In this embodiment, the piston body is used to seal the first vent and the second vent respectively, which can facilitate the control of the opening and closing of the fragrance system.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram showing the appearance of a fragrance system according to an embodiment of the present invention is shown;

[0023] Figure 2 A cross-sectional view of a housing at a first angle in an embodiment of the present invention is shown;

[0024] Figure 3 A cross-sectional view of the housing at another angle in an embodiment of the present invention is shown;

[0025] Figure 4A schematic diagram of the installation structure of the piston assembly and the drive assembly in an embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram of the connection structure between the piston assembly and the drive assembly in an embodiment of the present invention is shown;

[0027] Figure 6 A three-dimensional exploded schematic diagram of a piston assembly in an embodiment of the present invention is shown;

[0028] In the figure: 10, housing; 20, drive assembly; 30, piston assembly; 40, fan; 50, ventilation duct; 60, fragrance bomb; 101, air inlet; 102, air outlet; 103, cover plate; 104, second chamber; 105, second ventilation port; 106, partition; 107, first ventilation port; 108, first bottom plate; 109, first chamber; 110, second bottom plate; 111, positioning column; 112, second mounting hole; 113, through groove; 114, accommodating chamber ; 115, first mounting hole; 201, driving motor; 202, cam; 203, camshaft; 204, return spring; 300, piston body; 301, upper sleeve; 302, lower sleeve; 303, connecting part; 304, blocking part; 305, connecting column; 306, elastic part; 307, guide convex strip; 308, limiting protrusion; 309, second opening; 310, accommodating opening; 311, first opening; 312, disc body; 313, guide groove. DETAILED DESCRIPTION

[0029] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 6 , an embodiment of the present invention provides a fragrance system, comprising:

[0031] The housing 10 is provided with a receiving chamber 114, and a first chamber 109 and a second chamber 104 are further provided inside the housing 10. The receiving chamber 114 is communicated with the first chamber 109 through a first vent 107, and the receiving chamber 114 is communicated with the second chamber 104 through a second vent 105. The housing 10 is further provided with an air inlet 101 and an air outlet 102, and the air inlet 101 is communicated with the first chamber 109, and the air outlet 102 is communicated with the second chamber 104;

[0032] A fragrance bomb 60, the fragrance bomb 60 is disposed in the accommodating cavity 114;

[0033] The piston assembly 30 is movably disposed inside the housing 10. The piston assembly 30 includes at least two piston bodies 300. The two piston bodies 300 are respectively disposed corresponding to the first vent 107 and the second vent 105;

[0034] The driving assembly 20 is connected to the piston assembly 30. The driving assembly 20 is used to drive the piston assembly 30 to move in a first direction to reach a first position. The driving assembly 20 is also used to drive the piston assembly 30 to move in a second direction to reach a second position. When the piston assembly 30 is in the first position, the two piston bodies 300 can respectively close the first vent 107 and the second vent 105. When the piston assembly 30 is in the second position, the two piston bodies 300 are respectively separated from the first vent 107 and the second vent 105.

[0035] The fan 40 is disposed inside the housing 10 .

[0036] The present embodiment provides a fragrance system, which includes a housing 10, a fragrance bomb 60, a piston assembly 30, a drive assembly 20 and a fan 40. The housing 10 is provided with a receiving chamber 114, a first chamber 109 and a second chamber 104. The receiving chamber 114 and the first chamber 109 are interconnected through a first vent 107, and the receiving chamber 114 and the second chamber 104 are interconnected through a second vent 105. The fragrance bomb 60 is placed in the receiving chamber 114 for diffusing fragrance. When working, the drive assembly 20 drives the piston assembly 30 to move in a first direction so that the piston When the piston assembly 30 reaches the first position, since the two piston bodies 300 of the piston assembly 30 are arranged corresponding to the first vent 107 and the second vent 105, the two piston bodies 300 are respectively close to the first vent 107 and the second vent 105 during the movement of the piston assembly 30 in the first direction. When the piston assembly 30 is in the first position, the two piston bodies 300 can block the first vent 107 and the second vent 105. At this time, the entire accommodating chamber 114 is in a sealed state, and the fragrance will not diffuse out. The driving assembly 20 drives the piston assembly 30 to move in the second direction. When the piston assembly 30 moves in the second direction so that the piston assembly 30 reaches the second position, the two piston bodies 300 are respectively away from the first vent 107 and the second vent 105 during the movement of the piston assembly 30 in the second direction. When the piston assembly 30 is in the second position, the piston body 300 can be separated from the first vent 107 and the second vent 105. At this time, the first vent 107 and the second vent 105 are in an open state. The air flowing under the drive of the fan 40 enters the first chamber 109 from the air inlet 101, and then enters the first chamber 109 through the first vent 107. To the accommodating cavity 114, then enters the second chamber 104 through the second vent 105, and then is blown out from the air outlet 102 through the second chamber 104. During the whole process, the fragrance will not diffuse to other spaces of the shell 10, and its sealing effect is better, which can effectively prevent the fragrance from corroding other components inside the shell 10. In addition, due to its better sealing performance, it can further enhance the effect of the fragrance circulation. In this embodiment, the piston body 300 is used to seal the first vent 107 and the second vent 105 respectively, which can facilitate the control of opening and closing the fragrance system.

[0037] In a further feasible embodiment of the present embodiment, the piston assembly 30 also includes a connecting column 305, and two connecting parts 303 are symmetrically arranged on both sides of the connecting column 305, and the upper ends of the two connecting parts 303 are respectively connected to the lower ends of the two piston bodies 300, and the upper ends of the two piston bodies 300 are respectively used to cooperate with the first vent 107 and the second vent 105.

[0038] In this embodiment, the two piston bodies 300 are connected to the connecting column 305 via the connecting portion 303 , and the overall structure is simple and compact, and it is convenient to drive the piston assembly 30 .

[0039] In a further feasible embodiment of the present embodiment, the piston body 300 includes an upper sleeve 301 and a lower sleeve 302, the wall of the upper sleeve 301 is provided with a first opening 311, the wall of the lower sleeve 302 is provided with a second opening 309, the wall of the lower sleeve 302 is provided with an elastic portion 306 located in the second opening 309, the lower end of the elastic portion 306 is provided with a limiting protrusion 308 protruding outward, the lower sleeve 302 is inserted in the upper sleeve 301, the first opening 311 and the second opening 309 correspond, and the lower end of the limiting protrusion 308 presses against the lower end surface of the first opening 311.

[0040] In the present embodiment, since the first chamber 109 and the second chamber 104 are relatively independent of other spaces, the upper sleeve 301 and the lower sleeve 302 can be detachably connected to facilitate the installation of the piston assembly 30. Specifically, the first chamber 109 and the second chamber 104 are relatively independent of other spaces. During installation, the lower sleeve 302 can be installed, and then the upper sleeve 301 can be installed on the lower sleeve 302 from the first chamber 109 and the second chamber 104. In addition, the upper sleeve 301 and the lower sleeve 302 in the present embodiment are respectively provided with a first opening 311 and a second opening 309, and are limited by the limiting protrusion 308 on the elastic portion 306, which can facilitate the installation and positioning between the upper sleeve 301 and the lower sleeve 302.

[0041] In addition, a guide ridge 307 is provided on the outer wall of the lower sleeve 302 in the present embodiment along its length direction, and a guide groove 313 is provided on the inner wall of the upper sleeve 301 along its length direction. The guide ridge 307 and the guide groove 313 cooperate with each other. The setting of the guide ridge 307 and the guide groove 313 in the present embodiment can facilitate the installation and positioning between the upper sleeve 301 and the lower sleeve 302.

[0042] In a further feasible embodiment of the present embodiment, a disc body 312 is provided at the upper end of the piston body 300, and a truncated cone-shaped sealing portion 304 is provided at the upper portion of the disc body 312. The sealing portion 304 is used to be inserted into the lower ends of the first vent 107 and the second vent 105 to close the first vent 107 and the second vent 105.

[0043] In the present embodiment, the first vent 107 and the second vent 105 are circular, and the disc body 312 in the present embodiment can be pressed on the lower end surface of the first vent 107 and the second vent 105, and the truncated cone-shaped sealing portion 304 can better cooperate with the first vent 107 and the second vent 105, which can achieve a better sealing effect.

[0044] In a further implementable embodiment of the present embodiment, the drive assembly 20 includes a cam 202, a camshaft 203, a drive motor 201 and a return spring 204, the cam 202 is mounted on the camshaft 203, the camshaft 203 is connected to the main shaft of the drive motor 201, the drive motor 201 is used to drive the camshaft 203 to rotate, the cam 202 is in contact with the piston assembly 30, the cam 202 is used to drive the piston assembly 30 to move in a first direction, the return spring 204 is in elastic contact with the piston assembly 30, and the return spring 204 is used to drive the piston assembly 30 to move in a second direction.

[0045] In this embodiment, the cam 202 and the return spring 204 cooperate to drive the piston assembly 30 in the first direction and the second direction, so that bidirectional force is applied during the entire driving process, which can make the operation of the piston assembly 30 more stable and reliable during the entire driving process. In addition, the use of the cam 202 and the return spring 204 can also make the entire driving structure simpler and more compact, which can reduce the installation space.

[0046] In a further implementable embodiment of the present embodiment, the bottom of the accommodating cavity 114 has a first bottom plate 108, the first chamber 109 and the second chamber 104 are located below the first bottom plate 108, the first vent 107 and the second vent 105 are opened on the first bottom plate 108, the bottom of the first chamber 109 and the second chamber 104 have a second bottom plate 110, the first bottom plate 108 and the second bottom plate 110 are parallel to each other, the second bottom plate 110 is provided with a first mounting hole 115 and a second mounting hole 112, the first piston body 300 and the second piston body 300 are respectively movably arranged in the first mounting hole 115 and the second mounting hole 112, and a partition 106 is arranged between the first chamber 109 and the second chamber 104.

[0047] In this embodiment, a through slot 113 is provided in the first mounting hole 115 and the second mounting hole 112 . The through slot 113 in this embodiment can facilitate the guide ridge 307 to pass through the through slot 113 during installation.

[0048] The positions of the first chamber 109, the second chamber 104 and the accommodating chamber 114 in this embodiment can make the overall structure more compact. In addition, the positions of the first chamber 109, the second chamber 104 and the accommodating chamber 114 are more conducive to the installation and setting of the piston body 300. At the same time, it can also make it easier to realize the movement of the piston body 300 to open and close the first vent 107 and the second vent 105.

[0049] In a further implementable embodiment of the present embodiment, a positioning column 111 is extended downward from the lower surface of the second base plate 110, a connecting column 305 is located below the positioning column 111, a reset spring 204 is sleeved on the positioning column 111, a receiving opening 310 is provided at the upper end of the connecting column 305, the upper end of the reset spring 204 is elastically pressed against the lower surface of the second base plate 110, and the lower end of the reset spring 204 is elastically pressed against the receiving opening 310.

[0050] The arrangement of the positioning column 111 and the accommodating opening 310 in this embodiment can facilitate the arrangement of the return spring 204, prevent the return spring 204 from deflecting during compression, and ensure that the elastic return force of the return spring 204 is always maintained in the vertical direction.

[0051] In a further embodiment of the present invention, the cam 202 is located below the connecting post 305 , and the cam 202 contacts the lower end of the connecting post 305 .

[0052] The cam 202 in this embodiment is directly disposed below the connecting column 305 and is directly driven by pressing the connecting column 305 , which can make the overall structure simpler and facilitate driving the piston assembly 30 .

[0053] Specifically, a protrusion is provided at the lower end of the connecting column 305 in this embodiment, and the outer circumferential surface of the cam 202 is in contact with the protrusion.

[0054] In a further embodiment of the present invention, there are multiple accommodating cavities 114, each accommodating cavity 114 is provided with a fragrance bomb 60, the number of cams 202 and piston assemblies 30 corresponds to the number of accommodating cavities 114, and the shapes of the multiple cams 202 are the same or different.

[0055] There are multiple cams 202 in the present embodiment, and the multiple cams are installed on the same camshaft 203. The multiple accommodating cavities 114 in the present embodiment are arranged side by side. The shapes of the multiple cams 202 can be the same shape or different shapes. When the cams 202 of the same shape are used, they can simultaneously drive the piston assembly 30 to open and close the first vent 107 and the second vent 105. Of course, the multiple accommodating cavities 114 in the present embodiment can hold fragrance bombs 60 with different fragrances, and cams 202 of different shapes can be used to open the fragrance bombs 60 with different fragrances. Of course, it is also possible to design cams 202 of different shapes to mix the smells of fragrance bombs 60 with multiple different fragrances to obtain a special mixed fragrance, etc.

[0056] In a further implementable embodiment of the present embodiment, a relatively closed ventilation duct 50 is provided inside the shell 10, the blowing port of the fan 40 is connected to the air outlet 102, one end of the ventilation duct 50 is connected to the air suction port of the fan 40, and the other end of the ventilation duct 50 is connected to the second chamber 104.

[0057] In this embodiment, the ventilation duct 50 and the fan 40 can make the fragrance gas flow more smoothly, and in addition, the overall sealing performance can be further improved.

[0058] In addition, a cover plate 103 is provided on the housing 10 in this embodiment and located at the opening of the accommodating cavity 114 . The cover plate 103 is detachably connected, which can facilitate the replacement of the fragrance bomb 60 .

[0059] In addition, a control main board is also provided inside the shell 10 in the present embodiment, and the control main board is arranged in the external space of the first chamber 109, the second chamber 104 and the accommodating chamber 114. The control main board is electrically connected to the driving motor 201, and is used to control the rotation of the driving motor 201. In addition, an IC main board is also provided on the fragrance bomb 60 in the present embodiment, and the IC main board is mainly used to detect the service life of the fragrance bomb 60. More specifically, the IC main board is used to monitor the remaining fragrance of the fragrance bomb 60. The IC main board is electrically contacted with the control main board through a probe, and the IC main board is used to transmit the monitoring data to the control main board. The control main board can timely remind the fragrance bomb 60 of its service life.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fragrance system, characterized in that: include: A shell, wherein a receiving cavity is provided on the shell, and a first cavity and a second cavity are further provided inside the shell, wherein the receiving cavity is communicated with the first cavity through a first vent, and the receiving cavity is communicated with the second cavity through a second vent, and an air inlet and an air outlet are further provided on the shell, wherein the air inlet is communicated with the first cavity, and the air outlet is communicated with the second cavity; A fragrance bomb, wherein the fragrance bomb is arranged in the accommodating cavity; A piston assembly, wherein the piston assembly is movably disposed inside the housing, and the piston assembly has at least two piston bodies, and the two piston bodies are respectively disposed corresponding to the first vent and the second vent; a driving assembly connected to the piston assembly, the driving assembly being used to drive the piston assembly to move in a first direction to reach a first position, and the driving assembly being also used to drive the piston assembly to move in a second direction to reach a second position, when the piston assembly is in the first position, the two piston bodies can respectively close the first vent and the second vent, and when the piston assembly is in the second position, the two piston bodies are respectively separated from the first vent and the second vent; A fan is arranged inside the housing; The piston body comprises an upper sleeve and a lower sleeve, the wall of the upper sleeve is provided with a first opening, the wall of the lower sleeve is provided with a second opening, the wall of the lower sleeve is provided with an elastic part located in the second opening, the lower end of the elastic part is provided with a limiting protrusion protruding outward, the lower sleeve is inserted into the upper sleeve, the first opening corresponds to the second opening, and the lower end of the limiting protrusion presses against the lower end surface of the first opening; The first chamber and the second chamber are relatively independent from other spaces, and the upper sleeve and the lower sleeve are detachably connected to facilitate the installation of the piston assembly; during installation, the lower sleeve is installed, and then the upper sleeve is installed on the lower sleeve from the first chamber and the second chamber; A disc body is disposed at the upper end of the piston body, and a truncated cone-shaped blocking portion is disposed at the upper part of the disc body, and the blocking portion is used to be inserted at the lower ends of the first vent and the second vent to close the first vent and the second vent; The bottom of the accommodating cavity has a first bottom plate, the first chamber and the second chamber are located below the first bottom plate, the first vent and the second vent are opened on the first bottom plate, the bottom of the first chamber and the second chamber has a second bottom plate, the first bottom plate and the second bottom plate are parallel to each other, the second bottom plate is provided with a first mounting hole and a second mounting hole, the first piston body and the second piston body are movably provided in the first mounting hole and the second mounting hole respectively, and a partition is provided between the first chamber and the second chamber.

2. The fragrance system according to claim 1, characterized in that: The piston assembly also includes a connecting column, and two connecting parts are symmetrically arranged on both sides of the connecting column. The upper ends of the two connecting parts are respectively connected to the lower ends of the two piston bodies, and the upper ends of the two piston bodies are respectively used to cooperate with the first vent and the second vent.

3. The fragrance system according to claim 2, characterized in that: The driving assembly includes a cam, a camshaft, a driving motor and a return spring, wherein the cam is mounted on the camshaft, the camshaft is connected to the main shaft of the driving motor, the driving motor is used to drive the camshaft to rotate, the cam is in contact with the piston assembly, the cam is used to drive the piston assembly to move in a first direction, the return spring is in elastic contact with the piston assembly, and the return spring is used to drive the piston assembly to move in a second direction.

4. The fragrance system according to claim 3, characterized in that: A positioning column is extended downward from the lower surface of the second bottom plate, the connecting column is located below the positioning column, the return spring is sleeved on the positioning column, and an accommodating opening is provided at the upper end of the connecting column. The upper end of the return spring elastically presses against the lower surface of the second bottom plate, and the lower end of the return spring elastically presses against the accommodating opening.

5. The fragrance system according to claim 4, characterized in that: The cam is located below the connecting column, and the cam contacts the lower end of the connecting column.

6. The fragrance system according to claim 3, characterized in that: There are multiple accommodating cavities, each of which is provided with a fragrance bomb, the number of the cams and the piston assemblies corresponds to the number of the accommodating cavities, and the shapes of the multiple cams are the same or different.

7. The fragrance system according to claim 1, characterized in that: A relatively closed ventilation duct is arranged inside the shell, the air outlet of the fan is connected to the air outlet, one end of the ventilation duct is connected to the air intake port of the fan, and the other end of the ventilation duct is connected to the second chamber.

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