Air duct control module and fragrance mixing device for preventing smell mixing

Abstract

The utility model discloses an air duct control module and a fragrance mixing device capable of preventing smell channeling, the fragrance mixing device comprises a shell, an air duct control module, a fan, a plurality of fragrance bombs, a fragrance rebound device, a fragrance drawer and a drawer control module, the shell is provided with an air inlet and a fragrance air outlet, the fan is communicated with the fragrance air outlet, and the drawer control module is communicated with the fan. The fragrance drawer is arranged in the shell in a drawable mode, a plurality of fragrance cavities are formed in the fragrance drawer, the fragrance bombs are installed in the fragrance cavities, each fragrance cavity is provided with an air inlet and a fragrance outlet, and an air duct piece of the air duct control module is provided with a plurality of sets of fragrance inlet blade holes and fragrance outlet blade holes corresponding to the fragrance cavities. Each group of fragrance inlet blade hole and fragrance outlet blade hole corresponds to a pair of blades and a motor, the air duct cover is provided with a fragrance mixing cavity communicated with the fragrance outlet blade holes, and the fragrance rebound device is used for controlling the fragrance bomb to pop up or lock; the drawer control module is provided with a drawer rebounding device installed on the back face of the fragrance drawer, and the drawer rebounding device is used for controlling the fragrance drawer to be popped out or locked.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive interiors, and in particular to an air duct control module and a fragrance mixing device to prevent odor mixing. Background Technology

[0002] With the continuous development of the automotive industry, consumers have increasingly higher requirements for the comfort of the in-car environment. Fragrance systems can release fragrance throughout the car through fragrance diffusers, which can effectively remove leather odors and residual smells after smoking. Some even have the function of purifying the air with negative ions, which can provide passengers with a comfortable in-car environment.

[0003] Existing in-car fragrance systems often feature only one fragrance, failing to meet users' diverse scent preferences. To address this, prior patent CN210101268U discloses a rotary fragrance-switching in-car fragrance device that integrates multiple fragrance types into a single module to meet diverse needs. However, it can only offer one fragrance at a time, preventing the mixing of more than one fragrance. Furthermore, the various fragrances within the device are prone to cross-contamination, leading to a negative user experience. Prior patent CN210526355U discloses an in-car fragrance mixing machine that can offer one fragrance individually or simultaneously provide two or even three mixed fragrances. However, its fragrance-changing structure is complex, making it inconvenient for users to switch fragrances.

[0004] In view of this, this utility model addresses the many shortcomings and inconveniences of existing fragrance generators, such as limited fragrance options, easy mixing of fragrances, and complex fragrance changing structures. Through in-depth design and active research and development, this utility model was created. Utility Model Content

[0005] The purpose of this invention is to provide an air duct control module that can accurately select fragrances and prevent odor mixing.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A duct control module includes a duct component, blades, a motor, and a duct cover. The duct component is located at one end of the fragrance drawer corresponding to the fragrance outlet. The duct component has fragrance inlet blade holes and fragrance outlet blade holes corresponding to each air inlet and fragrance outlet. Each fragrance inlet blade hole and fragrance outlet blade hole is provided with a pair of blades. Each pair of blades is connected to a motor, and the blades are linked to the output shaft of the motor. One end of the duct cover is located on the duct component. The duct cover has a fragrance mixing chamber that communicates with the fragrance outlet blade holes. The fragrance mixing chamber is connected to the air inlet of the fan.

[0008] Furthermore, the air duct control module also includes a position detection board, which is connected to the control module, and a magnet is installed on each blade; the air duct cover has a double-layer double-ring structure, with the inner ring being the fragrance mixing chamber and the outer ring being the air inlet channel, the fragrance inlet blade hole being connected to the air inlet channel, and the fragrance outlet blade hole being connected to the fragrance mixing chamber.

[0009] After adopting the above solution, each pair of blades in the air duct control module of this utility model is individually controlled by a motor. By controlling the blades with the motor, the opening and closing degree of the incense inlet blade hole and the incense outlet blade hole are changed, thereby enabling precise selection or mixing of fragrances and preventing cross-contamination of flavors.

[0010] Another objective of this invention is to provide a fragrance mixing device that can switch or mix multiple fragrances and is convenient for changing fragrances, thus preventing cross-contamination of scents.

[0011] To achieve the above objectives, the solution of this utility model is:

[0012] A fragrance mixing device to prevent cross-contamination includes: a housing, an air duct control module, a fan, multiple fragrance cartridges, a fragrance reflector, a fragrance drawer, a drawer control module, and a control module. The housing has an air inlet and a fragrance outlet. The fan is connected to the fragrance outlet of the housing. The fragrance drawer is removable and installed inside the housing, and each drawer has multiple fragrance chambers. Fragrance cartridges are installed within the fragrance chambers. Each fragrance chamber in the drawer has an air inlet and a fragrance outlet. The air duct control module includes an air duct component, blades, a motor, and an air duct cover. The air duct component is located at the end of the fragrance drawer corresponding to the fragrance outlet, and the air duct... Each air inlet and fragrance outlet of the component is provided with fragrance inlet blade holes and fragrance outlet blade holes respectively. Each fragrance inlet blade hole and fragrance outlet blade hole is provided with a pair of blades. Each pair of blades is connected to a motor, and the blades are linked with the output shaft of the motor. One end of the air duct cover is set on the air duct component. The air duct cover is provided with a fragrance mixing chamber that communicates with the fragrance outlet blade holes. The fragrance mixing chamber is connected to the air inlet of the fan. The fragrance rebound device is connected to the fragrance cartridge and is used to control the fragrance cartridge to pop out or lock. The drawer control module has a drawer rebound device installed on the back of the fragrance drawer and is used to control the fragrance drawer to pop out or lock. The control module is connected to the air duct control module.

[0013] Furthermore, the air duct control module is also equipped with a position detection board, which is connected to the control module, and a magnet is installed on each blade.

[0014] Furthermore, the air duct cover has a double-layer double-ring structure, with the inner ring being a fragrance mixing chamber and the outer ring being an air inlet channel. The fragrance inlet blade hole is connected to the air inlet channel, and the fragrance outlet blade hole is connected to the fragrance mixing chamber.

[0015] Furthermore, the outer casing includes a shell and a top cover. The top cover is fastened to the shell. The air inlets are located on the left and right sides of the top cover. The top cover has a fan mounting cavity for installing a fan. The fan is installed in the fan mounting cavity. The fragrance outlet is located at the front end of the fan mounting cavity. The shell also has a bottom plate and an inner cover. The bottom plate and the inner cover form a pull-out cavity for the fragrance drawer to move. A fragrance detection plate for detecting fragrance cartridges is installed at the bottom of the pull-out cavity. The fragrance detection plate is connected to the control module. A sealing element is provided at the top of the pull-out cavity. The sealing element has multiple through holes corresponding to the fragrance inlet and outlet leaf holes. The inner cover has multiple through holes corresponding to the fragrance inlet and outlet leaf holes. The sealing element is made of soft silicone.

[0016] Furthermore, the bottom of the fragrance drawer is provided with a drawer cover and a drawer slide, and the sides of the fragrance drawer are provided with buckles. The drawer slide is provided with through holes for the buckles to be inserted. The drawer cover is located between the drawer slide and the bottom surface of the fragrance drawer. The drawer cover is provided with at least one limiting post corresponding to the rear end of the fragrance drawer. The front end of the drawer slide has a front baffle that extends upward. The fragrance drawer is installed between the limiting post of the drawer cover and the front baffle of the drawer slide.

[0017] Furthermore, the drawer guide rail is provided with a hook at the rear end of the drawer bottom cover, and the inner cover of the outer shell is provided with a rebound fixing seat for installing the drawer rebound device. The rebound fixing seat is connected to the pull-out cavity. The drawer rebound device is fixed on the rebound fixing seat. The drawer rebound device is provided with an elastic operating rod. One end of the operating rod is rotatably mounted on the drawer rebound device, and the other end is always pushed outward under force and faces the hook.

[0018] Furthermore, the drawer control module also includes a large gear, a small gear, and a coil spring. The drawer guide rail has a coil spring mounting groove at the rear end of the drawer bottom cover. The center of the coil spring mounting groove has a large gear mounting shaft. The drawer guide rail also has a coil spring pressure ring fixing seat outside the coil spring mounting groove. The coil spring is installed in the coil spring mounting groove, and the pressure ring at the outer end of the coil spring is fixed on the coil spring pressure ring fixing seat. The large gear is installed on the coil spring, and the center of the large gear is inserted into the large gear mounting shaft. The small gear meshes with the large gear. The inner cover of the outer shell has a rack on the side corresponding to the small gear that meshes with the small gear. The small gear moves back and forth along the rack.

[0019] Furthermore, the drawer control module also includes a damper. A damping groove is provided on one side of the coil spring mounting slot, and the damper is installed in the damping groove. A non-circular damping shaft extending upward is provided at the center of the damper. The center of the pinion has a non-circular shaft hole corresponding to the damping shaft. The shaft hole of the pinion is sleeved on the damping shaft, so that the damper and the pinion move synchronously.

[0020] Furthermore, the inner bottom of the outer shell is provided with protruding spring beads on both sides, and the top of the spring beads abuts against the bottom of the buckle when the fragrance drawer is locked; the center of the fragrance drawer is also provided with a drawer spring and a pressing member for pressing the drawer spring. One end of the pressing member passes through the drawer bottom cover and is fixed together with the drawer guide rail. The drawer spring is located between the drawer bottom cover and the pressing member.

[0021] Furthermore, the fragrance cartridge includes a fragrance cartridge top cover, a fragrance carrier, and a fragrance cartridge bottom cover. The fragrance carrier is disposed inside the fragrance cartridge bottom cover, and the fragrance cartridge top cover is closed on the fragrance carrier and the fragrance cartridge bottom cover. The fragrance cartridge bottom cover is provided with multiple air inlets communicating with the fragrance carrier. The fragrance rebound device includes a fragrance spring, a hook, a slider, and a spring piece. The fragrance spring is disposed between the slider and the drawer bottom cover. The slider has an inclined surface on one side corresponding to the fragrance cartridge. The hook is installed on the drawer bottom cover and fixed relative to the slider. One end of the spring piece is fixedly installed on the slider, and the other end has a bent portion facing the fragrance cartridge. The fragrance cartridge bottom cover is provided with a bending groove corresponding to the bent portion.

[0022] By adopting the above solution, this utility model's fragrance mixing device, which prevents cross-contamination of scents, features a pull-out fragrance drawer on its outer casing, allowing users to easily change fragrances. Multiple fragrance chambers on the drawer can hold multiple fragrance cartridges, and the fragrance cartridges are connected to fragrance ejectors to facilitate ejection or locking within the fragrance chambers, making replacement extremely convenient. Furthermore, since multiple fragrance cartridges are placed separately in the fragrance chambers and their release is controlled individually by the air duct control module, there is no problem of fragrance cross-contamination. Each pair of blades in the air duct control module is individually controlled by a motor, allowing for precise selection or mixing of fragrances. The motor controls the blades, changing the opening and closing degree of the fragrance inlet and outlet blades. Since each fragrance cartridge contains a different fragrance, different scents can be produced by controlling the amount of fragrance emitted from different cartridges. Mixing multiple fragrances in different proportions will produce different scents. Users can adjust the amount of fragrance emitted by the corresponding fragrance cartridge according to their preferences through the air duct control module, thereby increasing, decreasing, or even turning off the scent of one or more fragrances, thus providing users with a variety of fragrance options. Each fragrance inlet and outlet blade is independently controlled by the blades and motor, facilitating fragrance mixing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional exploded view of the present invention.

[0024] Figure 2 This is a diagram showing the combined state of this utility model.

[0025] Figure 3 This is a schematic cross-sectional view of the present invention.

[0026] Figure 4 This is a schematic diagram of the assembled state of the present invention with the shell removed.

[0027] Figure 5 This is an exploded view of the air duct control module of this utility model.

[0028] Figure 6 This is a partial exploded view of the structure of this utility model.

[0029] Figure 7 This is an exploded view of the blade position detection plate and the blade of this utility model.

[0030] Figure 8 This is an exploded view of the fragrance reflector of this utility model.

[0031] Figure 9 This is an exploded view of the fragrance cartridge of this utility model.

[0032] Figure 10 This is a schematic diagram of the drawer guide rail of this utility model.

[0033] Figure 11 This is a schematic diagram of the drawer pull-out structure of this utility model. Figure 1 .

[0034] Figure 12 This is a schematic diagram of the drawer pull-out structure of this utility model. Figure 2 .

[0035] Figure 13 This is a partial structural diagram of the drawer control module and the outer casing of this utility model.

[0036] Label Explanation:

[0037] 1. Outer shell; 11. Air inlet; 12. Fragrance outlet; 13. Shell; 14. Top cover; 15. Fan mounting cavity; 16. Base plate; 17. Inner cover; 171. Rebound fixing seat; 172. Rack; 18. Pull-out cavity; 19. Sealing element; 191. Through hole; 2. Air duct control module; 21. Air duct component; 211. Fragrance inlet blade hole; 212. Fragrance outlet blade hole; 22. Blade; 23. Motor; 24. Air duct cover; 241. Fragrance mixing cavity; 242. Air inlet channel; 25. Position detection plate; 26. Magnet; 3. Fan; 4. Fragrance cartridge; 41. Fragrance cartridge top cover; 42. Fragrance carrier; 43. Fragrance cartridge bottom cover; 431. Air inlet; 432. Bending groove; 5. Fragrance rebound device; 51. Fragrance spring; 52. Hook; 5 3. Slider; 54. Spring; 55. Inclined surface; 56. Bending part; 57. Groove; 6. Fragrance drawer; 61. Fragrance chamber; 611. Air inlet; 612. Fragrance outlet; 62. Drawer bottom cover; 621. Limiting post; 63. Drawer guide rail; 631. Front baffle; 632. Hook; 633. Coil spring mounting groove; 634. Large gear mounting shaft; 635. Damping groove; 636. Coil spring pressure ring fixing seat; 64. Buckle; 65. Through hole; 7. Drawer control module; 71. Drawer rebound device; 711. Operating lever; 72. Large gear; 73. Small gear; 731. Shaft hole; 74. Damper; 741. Damping shaft; 75. Coil spring; 751. Pressure ring; 8. Fragrance detection plate; 91. Spring bead; 93. Drawer spring; 94. Pressing element. Detailed Implementation

[0038] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] like Figures 1 to 13As shown, this utility model discloses a fragrance mixing device to prevent odor mixing, which includes a housing 1, an air duct control module 2, a fan 3, multiple fragrance cartridges 4, a fragrance reflector 5, a fragrance drawer 6, a drawer control module 7, and a control module. The housing 1 is provided with an air inlet 11 and a fragrance outlet 12. The fan 3 is connected to the fragrance outlet 12 of the housing 1. The fragrance drawer 6 is detachably installed inside the housing 1 and has multiple fragrance chambers 61 inside, each fragrance chamber 61 for holding one fragrance cartridge 4. Each fragrance chamber 61 of the fragrance drawer 6 is provided with an air inlet 611 and a fragrance outlet 612. The air inlet 611 is connected to the air inlet 11 of the outer shell 1. The air duct control module 2 includes an air duct component 21, blades 22, a motor 23, and an air duct cover 24. The air duct component 21 is located at one end of the fragrance drawer 6 corresponding to the fragrance outlet 612, and the air duct component 21 is provided with a fragrance inlet blade hole 211 and a fragrance outlet blade hole 212 corresponding to each air inlet 611 and fragrance outlet 612. The aperture 212 is smaller than or equal to the size of the blade 22, allowing the blade 22 to completely cover the incense inlet blade aperture 211 and the incense outlet blade aperture 212. Each incense inlet blade aperture 211 and incense outlet blade aperture 212 is provided with a pair of blades 22. Each pair of blades 22 is connected to a motor 23. The blades 22 are linked to the output shaft of the motor 23, allowing the motor 23 to drive the blades 22 to rotate, thereby opening or closing the incense inlet blade aperture 211 and the incense outlet blade aperture 212. One end of the air duct cover 24 is located on the air duct component 2. 1. The air duct cover 24 is provided with a fragrance mixing chamber 241 that connects to the fragrance leaf hole 212. The fragrance mixing chamber 241 is connected to the air inlet of the fan 3. The fragrance rebounder 5 is connected to the fragrance cartridge 4 and is used to control the fragrance cartridge 4 to pop out or lock. The drawer control module 7 has a drawer rebounder 71 installed on the back of the fragrance drawer 6 and is used to control the fragrance drawer 6 to pop out or lock. The control module is connected to the air duct control module 2, so that the air duct control module 2 can adjust the fragrance output of each fragrance cartridge 4 according to the instructions of the control module.

[0041] This novel fragrance mixing device prevents cross-contamination by incorporating a pull-out fragrance drawer 6 on the outer casing 1, allowing users to easily change fragrances. Multiple fragrance chambers 61 on the drawer 6 can hold multiple fragrance cartridges 4. The fragrance cartridges 4 are connected to fragrance ejectors 5, facilitating their ejection or locking within the fragrance chambers 61, making replacement extremely convenient. Furthermore, the multiple fragrance cartridges 4 are placed separately in the fragrance chambers 61, with each cartridge's release controlled individually by the airflow control module 2, preventing cross-contamination of fragrances. Each pair of blades 22 in the air duct control module 2 is individually controlled by a motor 23, allowing for precise selection or mixing of fragrances. The motor 23 controls the blades 22, changing the opening and closing degree of the fragrance inlet blade hole 211 and the fragrance outlet blade hole 212. Since each fragrance cartridge 4 contains a different fragrance, different fragrances can be produced by controlling the amount of fragrance emitted from different fragrance cartridges 4. Different fragrances will appear after mixing multiple fragrances in different proportions. Users can adjust the amount of fragrance emitted from the corresponding fragrance cartridge 4 according to their preferences through the air duct control module 2, thereby increasing, decreasing, or even turning off the fragrance of one or more fragrances, thus providing users with a variety of fragrance options. Each fragrance inlet blade hole 211 and fragrance outlet blade hole 212 is independently controlled by the blades 22 and the motor 23, facilitating fragrance mixing.

[0042] like Figure 1 and Figure 7 As shown, the air duct control module 2 is also provided with a position detection plate 25, which is connected to the control module. Each blade 22 is equipped with a magnet 26. When the blade 22 rotates to a specific position with the magnet 26, the sensor on the position detection plate 25 will sense the magnet 26, thereby calculating the precise position of the blade 22, so that the air duct control module 2 can accurately control the opening and closing degree of the incense inlet blade hole 211 and the incense outlet blade hole 212.

[0043] like Figure 5 As shown, the air duct cover 24 has a double-layer double-ring structure, with the inner ring being the fragrance mixing chamber 241 and the outer ring being the air inlet channel 242. The fragrance inlet blade hole 211 is connected to the air inlet channel 242, and the fragrance outlet blade hole 212 is connected to the fragrance mixing chamber 241.

[0044] like Figure 1 and Figure 2As shown, the outer casing 1 includes a housing 13 and a top cover 14. The top cover 14 is fastened to the housing 13. The air inlets 11 are located on the left and right sides of the top cover 14. The top cover 14 has a fan mounting cavity 15 for mounting the fan 3. The fan 3 is installed in the fan mounting cavity 15. The fragrance outlet 12 is located at the front end of the fan mounting cavity 15. The housing 13 is also equipped with a bottom plate 16 and an inner cover 17. A pull-out cavity 18 for the fragrance drawer 6 is formed between the bottom plate 16 and the inner cover 17. A fragrance detection plate 8 for detecting the fragrance cartridge 4 is installed at the bottom of the pull-out cavity 18. The fragrance detection plate 8 is connected to the control module. The top of the pull-out cavity 18 is provided with a sealing element 19. The sealing element 19 has multiple through holes 191 corresponding to the fragrance inlet leaf hole 211 and the fragrance outlet leaf hole 212. The inner cover 17 also has multiple through holes corresponding to the fragrance inlet leaf hole 211 and the fragrance outlet leaf hole 212 to ensure the fragrance can enter and exit. The sealing element 19 is made of soft silicone to ensure that the fragrance drawer 6 can be sealed in the pull-out cavity 18 when it is not pulled out, further preventing the fragrance from spreading.

[0045] like Figure 1 , Figure 6 and Figure 10 As shown, the bottom of the fragrance drawer 6 is provided with a drawer cover 62 and a drawer slide 63, the front end of the fragrance drawer 6 is provided with a drawer top cover, and the sides of the fragrance drawer 6 are provided with buckles 64. The drawer slide 63 is provided with through holes 65 for the buckles 64 to be inserted. The drawer cover 62 is located between the drawer slide 63 and the bottom surface of the fragrance drawer 6. The drawer cover 62 is provided with at least one limiting post 621 corresponding to the rear end of the fragrance drawer 6. The front end of the drawer slide 63 has a front baffle 631 that extends upward. The fragrance drawer 6 is installed between the limiting post 621 of the drawer cover 62 and the front baffle 631 of the drawer slide 63.

[0046] like Figure 1 , Figure 6 and Figure 10As shown, the drawer guide rail 63 has a hook 632 at the rear end of the drawer bottom cover 62. The inner cover 17 of the outer shell 1 has a rebound fixing seat 171 for installing the drawer rebound device 71 at the rear end. The rebound fixing seat 171 is connected to the pull-out cavity 18 and fixes the drawer rebound device 71 on the rebound fixing seat 171. The drawer rebound device 71 is provided with an elastic (using a spring or sheet) operating rod 711. One end of the operating rod 711 is rotatably mounted on the drawer rebound device 71, and the other end is always pushed outward under force and faces the hook 632, pushing the back of the fragrance drawer 6 forward. When the fragrance drawer 6 enters the pull-out cavity 18, the back of the fragrance drawer 6 will bring the operating rod 711 closer to one end of the drawer rebound device 71. When the fragrance drawer 6 is closed, the free end of the operating rod 711 can be locked into the hook 632 of the drawer guide rail 63, locking the fragrance drawer 6. Pressing the drawer front cover releases the limiting action between the operating lever 711 and the latch 632. The operating lever 711 then pushes the fragrance drawer 6 forward again, opening and closing the fragrance drawer 6. The drawer rebound mechanism 71 is used to lock the fragrance drawer 6 when pressed and unlock it when pressed again.

[0047] like Figure 1 , Figure 2 , Figure 6 and Figure 13As shown, the drawer control module 7, in addition to the drawer rebound mechanism 71, also includes a large gear 72, a small gear 73, a damper 74, and a coil spring 75. The drawer guide rail 63 has a coil spring mounting groove 633 on one side of the rear end of the drawer bottom cover 62 corresponding to the hook 632. A large gear mounting shaft 634 is located at the center of the coil spring mounting groove 633. A damping groove 635 is located on one side of the coil spring mounting groove 633. The drawer guide rail 63 also has a coil spring retaining ring 636 outside the coil spring mounting groove 633. The coil spring 75 is installed in the coil spring mounting groove 633, and the retaining ring 751 at the outer end of the coil spring 75 is fixed to the coil spring retaining ring 636. The large gear... 72 is mounted on the coil spring 75. The center of the large gear 72 is inserted into the large gear mounting shaft 634. The damper 74 is installed in the damping groove 635. The center of the damper 74 is provided with a non-circular damping shaft 741 extending upward. The center of the small gear 73 has a non-circular shaft hole 731 corresponding to the damping shaft 741. The shaft hole 731 of the small gear 73 is sleeved on the damping shaft 741, so that the damper 74 can move synchronously with the small gear 73. The small gear 73 meshes with the large gear 72. The inner cover 17 of the outer shell 1 is provided with a rack 172 that meshes with the small gear 73 on one side corresponding to the small gear 73. The small gear 73 can move back and forth on the rack 172. A coil spring 75 is installed under the large gear 72. The coil spring 75 stores energy. The pressure ring 751 at the outer end of the coil spring 75 is fixed to the coil spring pressure ring fixing seat 636. After the fragrance drawer 6 is pressed and locked, the coil spring 75 stores energy. When the fragrance drawer 6 is pressed again and pops out, the coil spring 75 releases energy to drive the large gear 72 to rotate. The large gear 72 then drives the small gear 73 to rotate. The small gear 73 cooperates with the rack 172 on the inner cover 17 of the outer shell 1 to push the entire fragrance drawer 6 outward. A damper 74 is installed at the bottom of the small gear 73 and rotates synchronously with the small gear 73. The function of the damper 74 is to make the movement of the fragrance drawer 6 more slow and gentle when it is pulled out, so as not to make it jump out abruptly.

[0048] like Figure 1 , Figure 3 , Figure 11 and Figure 12As shown, the inner bottom of the housing 13 is provided with protruding spring beads 91 on both sides (springs are provided at the bottom of the ball beads). The center of the fragrance drawer 6 is also provided with a drawer spring 93 and a pressing member 94 for pressing the drawer spring 93. One end of the pressing member 94 passes through the drawer bottom cover 62 and is fixed together with the drawer guide rail 63. The drawer spring 93 is located between the drawer bottom cover 62 and the pressing member 94. When the fragrance drawer 6 is locked in place, the spring beads 91 correspond to the buckles 64 on both sides of the fragrance drawer 6 and push the bottom end of the buckles 64 upward, so that the fragrance drawer 6 and the sealing member 19 are sealed, thus achieving the sealing function of the fragrance drawer 6. When the drawer is pulled out, the fragrance drawer 6 disengages from the spring beads 91. With the elastic force of the drawer spring 93 inside the fragrance drawer 6, the entire fragrance drawer is pushed down, so that a gap is created between the fragrance drawer 6 and the sealing member 19, thereby reducing friction and making the fragrance drawer 6 exit more smoothly.

[0049] like Figure 1 , Figure 8 and Figure 9 As shown, the fragrance cartridge 4 includes a fragrance cartridge upper cover 41, a fragrance carrier 42, and a fragrance cartridge lower cover 43. The fragrance carrier 42 is disposed inside the fragrance cartridge lower cover 43. The fragrance cartridge upper cover 41 covers the fragrance carrier 42 and the fragrance cartridge lower cover 43. The fragrance cartridge lower cover 43 has multiple air inlets 431 communicating with the fragrance carrier 42. The fragrance rebound device 5 includes a fragrance spring 51, a pull hook 52, a slider 53, and a spring piece 54. The fragrance spring 51 is used to provide elastic force and is disposed between the slider 53 and the drawer lower cover 62. The slider 53 has a bevel 55 and a groove 57 with a concave angle on one side corresponding to the fragrance cartridge 4 (see Figure 1 One end of the hook 52 is mounted on the drawer bottom cover 62, and the other end is mounted on the slider 53. The hook 52 is used to hold the slider 53 in place, preventing it from automatically popping out when the fragrance cartridge 4 is inserted. When the fragrance cartridge 4 is inserted, the hook 52 moves along the groove inside the slider 53. When the hook 52 moves into the concave corner at the top of the slider 53, the slider 53 is fixed in place. One end of the spring piece 54 is fixedly mounted on the slider 53, and the other end has a bent portion 56 facing the fragrance cartridge 4. The fragrance cartridge bottom cover 43 of the fragrance cartridge 4 has a bending groove 432 corresponding to the bent portion 56.

[0050] When fragrance cartridge 4 is installed, it pushes the slider 53 of the fragrance ejector 5 downwards, compressing the spring 51 and storing its force. Simultaneously, the hook 52 moves along the groove 57 inside the slider 53. When the hook 52 moves into the concave corner at the top of the slider 53, the slider 53 is fixed in place. Due to the constraint of the inclined surface 55 of the slider 53, the spring piece 54 moves outwards, causing its bent portion 56 to engage with the bent groove 432 of the fragrance cartridge 4, thus securing the fragrance cartridge 4. To remove the fragrance cartridge 4, simply press it again. The hook 52 will move along the groove 57 to the other side, no longer holding the slider 53. Since the spring 51 is constantly compressed, when the hook 52 no longer holds the slider 53, the spring 51 releases its elasticity, ejecting the slider 53 and fragrance cartridge 4 together. This facilitates the removal and replacement of the fragrance cartridge 4.

[0051] The working process of this fragrance mixing device for preventing cross-contamination is as follows: After the user selects the desired fragrance (which can be a single fragrance or a mixed fragrance) through the control module, the motor 23 on the corresponding fragrance cartridge 4 drives the blades 22 to rotate, opening the fragrance inlet blade hole 211 and the fragrance outlet blade hole 212. The fan 3 runs, and external air enters the air inlet channel 242 of the air duct cover 24 from the air inlet 11 of the outer shell 1, and then passes through the fragrance inlet blade hole 211 of the air duct component 21, the through hole of the inner cover 17, the through hole 191 of the sealing component 19, and the air inlet 611 of the fragrance chamber 61 of the fragrance drawer 6, and then passes through... The air inlet 431 on one side of the air inlet 611 enters the lower cover 43 of the fragrance cartridge 4, combines with the fragrance carrier 42 to turn the outside air into fragrance, and then flows out from the air inlet 431 on the other side of the lower cover 43 of the fragrance cartridge. After that, it passes through the fragrance outlet 612 of the fragrance chamber 61, the through hole of the sealing member 19 corresponding to the fragrance outlet 612, the through hole of the inner cover 17 corresponding to the fragrance cartridge 4, and the fragrance leaf hole 212 of the air duct member 21. Then it enters the fragrance mixing chamber 241 of the air duct cover 24. If multiple fragrances are selected, they will be mixed in the fragrance mixing chamber 241. Then it enters the fan 3, and the fan 3 sends the selected fragrance to the outside of the outer shell 1.

[0052] If the user selects only a single fragrance, the fragrance mixing chamber 241 will only contain a single fragrance, which can blow out the fragrance desired by the user. The user can adjust the air duct control module 2 according to their own preferences to increase or decrease one or more fragrances. When the user adjusts the air duct control module 2, the corresponding motor 23 drives the blade 22 to rotate, thereby controlling the size of the fragrance inlet blade hole 211 and the fragrance outlet blade hole 212, thus adjusting the fragrance output of the corresponding fragrance cartridge 4.

[0053] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A duct control module, characterized in that: The device includes an air duct component (21), blades (22), a motor (23), and an air duct cover (24). The air duct component (21) is located at one end of the fragrance drawer (6) corresponding to the fragrance outlet (612). The air duct component (21) is provided with fragrance inlet blade holes (211) and fragrance outlet blade holes (212) respectively for each air inlet (611) and fragrance outlet (612). Each fragrance inlet blade hole (211) and fragrance outlet blade hole (212) is provided with a pair of blades (22). Each pair of blades (22) is connected to a motor (23). The blades (22) and the output shaft of the motor (23) are linked. One end of the air duct cover (24) is located on the air duct component (21). The air duct cover (24) is provided with a fragrance mixing chamber (241) that connects to the fragrance outlet blade holes (212). The fragrance mixing chamber (241) is connected to the air inlet of the fan (3).

2. The air duct control module as described in claim 1, characterized in that: It also includes a position detection board (25), which is connected to the control module. Each blade (22) is equipped with a magnet (26). The air duct cover (24) is a double-layer double-ring structure. Its inner ring is a fragrance mixing chamber (241), and its outer ring is an air inlet channel (242). The fragrance inlet blade hole (211) is connected to the air inlet channel (242), and the fragrance outlet blade hole (212) is connected to the fragrance mixing chamber (241).

3. A fragrance mixing device for preventing cross-contamination of flavors, characterized in that, include: The air duct control module (2), housing (1), fan (3), multiple fragrance cartridges (4), fragrance bouncer (5), fragrance drawer (6), drawer control module (7) and control module as described in claim 1 or 2, wherein the housing (1) is provided with an air inlet (11) and a fragrance outlet (12), the fan (3) is connected to the fragrance outlet (12) of the housing (1), and the fragrance drawer (6) is slidably installed inside the housing (1), and the fragrance drawer is provided with multiple fragrance chambers (61). The fragrance cartridge (4) is installed in the fragrance chamber (61). Each fragrance chamber (61) of the fragrance drawer (6) is provided with an air inlet (611) and a fragrance outlet (612). The fragrance rebound device (5) is connected to the fragrance cartridge (4) to control the fragrance cartridge (4) to pop out or lock. The drawer control module (7) has a drawer rebound device (71) installed on the back of the fragrance drawer (6) to control the fragrance drawer (6) to pop out or lock. The control module is connected to the air duct control module (2).

4. The aroma mixing device for preventing cross-contamination of flavors as described in claim 3, characterized in that: The outer casing (1) includes a casing (13) and a top cover (14). The top cover (14) is fastened to the casing (13). The air inlet (11) is located on the left and right sides of the top cover (14). The top cover (14) is provided with a fan mounting cavity (15) for installing a fan (3). The fan (3) is installed in the fan mounting cavity (15). The fragrance outlet (12) is located at the front end of the fan mounting cavity (15). The casing (13) is also equipped with a bottom plate (16) and an inner cover (17). A fragrance supply is formed between the bottom plate (16) and the inner cover (17). The drawer (6) has a pull-out cavity (18) for operation. The bottom of the pull-out cavity (18) is equipped with a fragrance detection plate (8) for detecting fragrance cartridges (4). The fragrance detection plate (8) is connected to the control module. The top of the pull-out cavity (18) is provided with a sealing element (19). The sealing element (19) is provided with multiple through holes (191) corresponding to the fragrance inlet leaf hole (211) and the fragrance outlet leaf hole (212). The inner cover (17) is provided with multiple through holes corresponding to the fragrance inlet leaf hole (211) and the fragrance outlet leaf hole (212). The sealing element (19) is a soft silicone structure.

5. The aroma mixing device for preventing cross-contamination of flavors as described in claim 3, characterized in that: The bottom of the fragrance drawer (6) is provided with a drawer cover (62) and a drawer rail (63). The sides of the fragrance drawer (6) are provided with buckles (64). The drawer rail (63) is provided with through holes (65) for the buckles (64) to be inserted. The drawer cover (62) is located between the drawer rail (63) and the bottom surface of the fragrance drawer (6). The drawer cover (62) is provided with at least one limiting post (621) corresponding to the rear end of the fragrance drawer (6). The front end of the drawer rail (63) has a front baffle (631) that extends upward. The fragrance drawer (6) is installed between the limiting post (621) of the drawer cover (62) and the front baffle (631) of the drawer rail (63).

6. The aroma mixing device for preventing cross-contamination of flavors as described in claim 5, characterized in that: The drawer guide rail (63) has a hook (632) at the rear end of the drawer bottom cover (62). The inner cover (17) of the outer shell (1) has a rebound fixing seat (171) for the drawer rebound device (71) to be installed at the rear end. The rebound fixing seat (171) is connected to the pull-out cavity (18). The drawer rebound device (71) is fixed on the rebound fixing seat (171). The drawer rebound device (71) is provided with an elastic operating rod (711). One end of the operating rod (711) is rotatably set on the drawer rebound device (71), and the other end is always pushed outward under force and faces the hook (632).

7. The aroma mixing device for preventing cross-contamination of flavors as described in claim 5, characterized in that: The drawer control module (7) also includes a large gear (72), a small gear (73), and a coil spring (75). The drawer guide rail (63) has a coil spring mounting groove (633) at the rear end of the drawer bottom cover (62). The center of the coil spring mounting groove (633) has a large gear mounting shaft (634). The drawer guide rail (63) also has a coil spring pressure ring fixing seat (636) outside the coil spring mounting groove (633). The coil spring (75) is installed in the coil spring mounting groove (633). (75) The outer end of the pressure ring (751) is fixed on the spring pressure ring fixing seat (636). The large gear (72) is installed on the spring (75). The center of the large gear (72) is inserted into the large gear mounting shaft (634). The small gear (73) meshes with the large gear (72). The inner cover (17) of the outer shell (1) is provided with a rack (172) that meshes with the small gear (73) on one side corresponding to the small gear (73). The small gear (73) moves back and forth along the rack (172).

8. The aroma mixing device for preventing cross-contamination of flavors as described in claim 7, characterized in that: The drawer control module (7) also includes a damper (74). A damping groove (635) is provided on one side of the coil spring mounting groove (633). The damper (74) is installed in the damping groove (635). The center of the damper (74) is provided with a non-circular damping shaft (741) extending upward. The center of the pinion (73) has a non-circular shaft hole (731) corresponding to the damping shaft (741). The shaft hole (731) of the pinion (73) is sleeved on the damping shaft (741), so that the damper (74) and the pinion (73) move synchronously.

9. The aroma mixing device for preventing cross-contamination of flavors as described in claim 5, characterized in that: The inner bottom of the outer shell (1) is provided with protruding spring beads (91) on both sides. The top of the spring beads (91) abuts against the bottom of the buckle (64) when the fragrance drawer (6) is locked. The center of the fragrance drawer (6) is also provided with a drawer spring (93) and a pressure piece (94) for pressing the drawer spring (93). One end of the pressure piece (94) passes through the drawer bottom cover (62) and is fixed together with the drawer guide rail (63). The drawer spring (93) is located between the drawer bottom cover (62) and the pressure piece (94).

10. A fragrance mixing device for preventing cross-contamination as described in claim 3, characterized in that: The fragrance cartridge (4) includes a fragrance cartridge top cover (41), a fragrance carrier (42), and a fragrance cartridge bottom cover (43). The fragrance carrier (42) is disposed inside the fragrance cartridge bottom cover (43). The fragrance cartridge top cover (41) covers the fragrance carrier (42) and the fragrance cartridge bottom cover (43). The fragrance cartridge bottom cover (43) is provided with multiple air inlets (431) communicating with the fragrance carrier (42). The fragrance bouncer (5) includes a fragrance spring (51), a hook (52), a slider (53), and a spring piece (54). A spring (51) is set between the slider (53) and the drawer bottom cover (62). The slider (53) has a slope (55) on one side corresponding to the fragrance cartridge (4). The hook (52) is installed on the drawer bottom cover (62) and fixed relative to the slider (53). One end of the spring piece (54) is fixedly installed on the slider (53), and the other end has a bent part (56). The bent part (56) faces the fragrance cartridge (4). The fragrance cartridge bottom cover (43) of the fragrance cartridge (4) has a bending groove (432) corresponding to the bent part (56).

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