High-temperature gas and ultraviolet sterilization device for intelligent toilet seat

Abstract

The application discloses a high-temperature gas and ultraviolet sterilization device of an intelligent toilet seat, and relates to the technical field of bathroom sterilization. The device comprises a cover plate, a driving mechanism, an adjusting mechanism, a sterilization mechanism and a control unit. The driving mechanism is arranged in the cover plate and drives the adjusting mechanism to move through a swing shaft. The adjusting mechanism comprises a position adjusting part for adjusting the longitudinal position and an angle adjusting part for adjusting the inclination angle. The sterilization mechanism comprises a sterilization pipe connected with an external high-temperature gas source and an ultraviolet lamp fixed to the outer wall of the sterilization pipe. During use, the control unit receives a starting signal, adjusts the distance and angle of the sterilization mechanism relative to the surface of the seat, and sprays high-temperature gas to the surface of the seat through the sterilization pipe while the ultraviolet lamp irradiates. The driving mechanism drives the sterilization mechanism to swing along the seat area, so that the spraying area and the irradiation area cover the surface of the seat. The device can be adapted to different curved seat surfaces, reduces the sterilization blind area, and improves the uniformity of coverage and the safety in use.

Description

Technical Field

[0001] This invention relates to the technical field of bathroom disinfection technology, and in particular to a high-temperature gas and ultraviolet sterilization device for a smart toilet seat. Background Technology

[0002] The hygiene and cleanliness of smart toilet seats are receiving increasing attention. Bacteria can easily grow on the surface of the seat. To ensure the health of users, smart toilet seats are usually equipped with sterilization devices. High-temperature gas sterilization and ultraviolet sterilization are common sterilization methods. By creating a sterilization environment between the seat surface and the lid, bacterial growth can be effectively reduced, and the cleanliness and hygiene of the seat can be improved.

[0003] In existing smart toilet seat sterilization devices, the nozzles typically use a fixed spray method. They are precisely calculated and fixedly installed according to the specific curved shape of the seat, allowing the nozzles to spray gas or irradiate ultraviolet light onto the seat surface. However, in actual use, toilet seats of different brands, models, or designs vary in shape and curvature. When it is necessary to adapt to other types of seats, the original fixed nozzles may not be able to form a good matching relationship with the changing seat surface. The coverage of sterilizing gas or ultraviolet light may be affected, and the sterilization effect may fluctuate.

[0004] Therefore, in order to address the shortcomings of the above-mentioned problems, a high-temperature gas and ultraviolet sterilization device for intelligent toilet seats is proposed. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a high-temperature gas and ultraviolet sterilization device for a smart toilet seat.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-temperature gas and ultraviolet sterilization device for an intelligent toilet seat, comprising: a cover plate, a drive mechanism, an adjustment mechanism, a sterilization mechanism, and a control unit;

[0007] The cover plate is fixedly connected to the top of the toilet seat, the drive mechanism is fixedly connected to the bottom of the inner wall of the cover plate, the adjustment mechanism is movably connected to the output end of the drive mechanism, the sterilization mechanism is fixedly connected to the output end of the adjustment mechanism and is used to spray gas and irradiate ultraviolet light on the surface of the seat, and the control unit is fixedly connected to the inner wall of the cover plate and electrically connected to the drive mechanism.

[0008] The driving mechanism includes a drive motor and a swing shaft. The drive motor is fixedly connected to the bottom of the inner wall of the cover plate, and the swing shaft is rotatably connected to the output end of the drive motor.

[0009] The adjustment mechanism includes a position adjustment part and an angle adjustment part. The position adjustment part is slidably connected to the inner wall of the cover plate to adjust the longitudinal position of the sterilization mechanism, and the angle adjustment part is rotatably connected to the end of the swing shaft to adjust the tilt angle of the sterilization mechanism.

[0010] The sterilization mechanism includes a sterilization tube and an ultraviolet lamp tube. The sterilization tube is fixedly connected to the output end of the angle adjustment section and is connected to an external high-temperature gas source. The ultraviolet lamp tube is fixedly connected to the outer wall of the sterilization tube.

[0011] In a preferred embodiment of the present invention, the angle adjustment part includes: an arc-shaped slide rail and an arc-shaped slider. The arc-shaped slide rail is fixedly connected to the end of the swing shaft, and the arc-shaped slider is slidably connected to the inner wall of the arc-shaped slide rail and fixedly connected to the outer wall of the sterilization tube.

[0012] In a preferred embodiment of the present invention, the position adjustment part includes: a sliding seat and a positioning screw, the sliding seat being slidably connected to the bottom of the inner wall of the cover plate, and the positioning screw passing through the sliding seat and threadedly connected to the cover plate to lock the sliding seat.

[0013] In a preferred embodiment of the present invention, the top of the cover plate is provided with an air inlet and an air outlet. The air inlet is connected to an external air pump, and the air outlet is connected to a sterilization tube to deliver high-temperature gas to the space between the seat ring and the cover plate.

[0014] In a preferred embodiment of the present invention, the sterilization mechanism further includes a mounting bracket and a connecting hose. The mounting bracket is fixedly connected to the bottom of the arc-shaped slider, the sterilization tube is fixedly connected to the inner wall of the mounting bracket, one end of the connecting hose is sealed and connected to the outer wall of the sterilization tube, and the other end of the connecting hose is sealed and connected to the air outlet. The control unit is electrically connected to the drive motor and the ultraviolet lamp.

[0015] In a preferred embodiment of the present invention, the adjustment mechanism further includes a position sensor and an angle sensor. The position sensor is fixedly connected to the inner wall of the cover plate and is disposed opposite to the outer wall of the sliding seat. The angle sensor is fixedly connected to the outer wall of the arc-shaped slide rail and is electrically connected to the control unit.

[0016] In a preferred embodiment of the present invention, the driving mechanism further includes a reducer, which is fixedly connected to the output end of the drive motor and is connected to the swing shaft via a transmission.

[0017] In a preferred embodiment of the present invention, a sealing ring is fixedly connected to the inner wall of the cover plate, the sealing ring is located around the air outlet, and a limiting block is fixedly connected to the inner wall of the cover plate, the limiting block is located at both ends of the sliding seat movement path.

[0018] In a preferred embodiment of the present invention, a protective cover is fixedly connected to the outer wall of the cover plate, and the protective cover is sleeved on the outside of the ultraviolet lamp tube.

[0019] A method for sterilizing a smart toilet seat using high-temperature gas and ultraviolet light includes the following steps:

[0020] S1. Receive the sterilization start signal through the control unit and control the drive mechanism, adjustment mechanism and sterilization mechanism to enter the sterilization state;

[0021] S2. Adjust the longitudinal position of the sterilization mechanism relative to the toilet seat using the position adjustment unit, and adjust the tilt angle of the sterilization tube and the ultraviolet lamp relative to the surface of the toilet seat using the angle adjustment unit.

[0022] S3. High-temperature gas is supplied to the sterilization pipe through an external high-temperature gas source, so that the high-temperature gas is sprayed onto the surface of the toilet seat through the sterilization pipe.

[0023] S4. The ultraviolet lamp is turned on by the control unit so that the ultraviolet lamp can irradiate the surface of the toilet seat with ultraviolet light.

[0024] S5. The drive motor drives the swing shaft to rotate, causing the adjustment mechanism to move the sterilization mechanism around the toilet seat so that the high-temperature gas spray area and the ultraviolet irradiation area cover the surface of the toilet seat.

[0025] This invention addresses the shortcomings of the prior art and has the following beneficial effects:

[0026] (1) This invention provides a high-temperature gas and ultraviolet sterilization device for a smart toilet seat. The longitudinal position of the sterilization mechanism is adjusted by a position adjustment unit, and the tilt angle of the sterilization mechanism is adjusted by an angle adjustment unit, achieving the effect of adapting the sterilization tube and ultraviolet lamp to the surface shape of the toilet seat. Since the ultraviolet lamp is fixedly connected to the outer wall of the sterilization tube, the two can synchronously adjust the spray direction and irradiation direction, directly improving the uniformity of sterilization coverage on the seat surface. Compared to the problem in the prior art where fixed nozzles or fixed ultraviolet lamps are difficult to adapt to different seat surface curvatures, this invention can reduce the possibility of sterilization blind spots and further improve the adaptability of different models of smart toilet seats.

[0027] (2) This invention provides a high-temperature gas and ultraviolet sterilization device for an intelligent toilet seat. A drive motor rotates the swing shaft, causing the adjustment mechanism to move the sterilization mechanism around the toilet seat, achieving dynamic coverage of the toilet seat surface by the high-temperature gas spray area and the ultraviolet irradiation area. Since the sterilization mechanism is fixedly connected to the output end of the adjustment mechanism, the sterilization tube and ultraviolet lamp can move synchronously with the swing shaft, directly enhancing the synergistic effect of high-temperature gas sterilization and ultraviolet sterilization. Compared to the limited coverage of fixed sterilization structures in existing technologies, this invention makes the sterilization path more closely match the contour of the seat surface, further improving the comprehensiveness and stability of the sterilization process.

[0028] (3) This invention provides a high-temperature gas and ultraviolet sterilization device for an intelligent toilet seat. The tilt angle of the sterilization tube and ultraviolet lamp is adjusted by a curved slide rail and a curved slider, and the longitudinal position of the sterilization mechanism is locked by a sliding seat and a positioning screw, achieving a stable working posture after adjustment. Because the connecting hose maintains a sealed connection between the sterilization tube and the air outlet, the sealing ring, limiting block, and protective cover improve sealing, limiting, and protection performance, directly enhancing the device's operational reliability. Compared to the limitations of rigid conveying structures and insufficient protection of ultraviolet components in existing technologies, this invention further improves safety in use. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0030] Figure 1 This is a first-view structural diagram of the device body according to a preferred embodiment of the present invention;

[0031] Figure 2 This is a first-view structural diagram of the device body according to a preferred embodiment of the present invention;

[0032] Figure 3 This is a partial cross-sectional view of the device body from a first perspective of a preferred embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the device body effect according to a preferred embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the method flow of a preferred embodiment of the present invention.

[0035] In the diagram: 1. Cover plate; 2. Drive mechanism; 3. Adjustment mechanism; 4. Sterilization mechanism; 5. Control unit; 6. Drive motor; 7. Swing shaft; 8. Position adjustment unit; 9. Angle adjustment unit; 10. Sterilization tube; 11. Ultraviolet lamp tube. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention and therefore only show the components relevant to the present invention.

[0037] In this specification, terms such as "upper," "lower," "inner," "outer," "longitudinal," and "tilt angle," etc., refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship as commonly understood in the actual installation and use of the smart toilet seat. They are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0038] This invention is applicable to the relatively enclosed or semi-enclosed sterilization space formed between the smart toilet seat and the toilet seat ring, and is especially suitable for sterilization scenarios of toilet seat ring surfaces of different models, curvatures or widths.

[0039] This invention improves the uniformity of coverage on the toilet seat surface by setting high-temperature gas injection and ultraviolet irradiation on the same adjustable and swingable sterilization mechanism, so that the sterilization tube and ultraviolet lamp can be matched in position and angle with the contour of the toilet seat.

[0040] The present invention further enables the covering process to be repeatedly implemented by those skilled in the art through temperature closed-loop control of an external high-temperature gas source, posture closed-loop control of a position / angle sensor, swing path parameter control, and dynamic sealing structure of the connecting hose.

[0041] like Figures 1-5 As shown, a high-temperature gas and ultraviolet sterilization device for a smart toilet seat includes the following steps:

[0042] S1. The sterilization start signal is received through the control unit 5, and the drive mechanism 2, the adjustment mechanism 3 and the sterilization mechanism 4 are controlled to enter the sterilization state. Before entering the sterilization state, the control unit 5 determines whether the cover plate 1 is closed and whether the seat ring is in an unused state or a sterilization state is allowed.

[0043] S2. The longitudinal position of the sterilization mechanism 4 relative to the toilet seat is adjusted by the position adjustment unit 8, and the tilt angle of the sterilization tube 10 and the ultraviolet lamp tube 11 relative to the surface of the toilet seat is adjusted by the angle adjustment unit 9. The position adjustment and angle adjustment are controlled in a closed loop by the position sensor, the angle sensor and the control unit 5.

[0044] S3. High-temperature gas is supplied to the sterilization tube 10 through an external high-temperature gas source, so that the high-temperature gas is sprayed onto the surface of the toilet seat through the sterilization tube 10. The external high-temperature gas source heats the gas to 80℃-120℃ and keeps the temperature stable.

[0045] S4. The ultraviolet lamp 11 is turned on by the control unit 5 so that the ultraviolet lamp 11 irradiates the surface of the toilet seat with ultraviolet light. The main peak wavelength of the ultraviolet lamp 11 is 254nm or 260-280nm, and the ultraviolet leakage in non-predetermined directions is limited by the protective cover.

[0046] S5. The drive motor 6 drives the swing shaft 7 to rotate, causing the adjustment mechanism 3 to drive the sterilization mechanism 4 to move around the toilet seat, so that the high-temperature gas spray area and the ultraviolet irradiation area cover the surface of the toilet seat. The swing shaft 7 swings back and forth in the range of 0°-180° at a frequency of 0.1-0.5Hz, so that the sterilization mechanism 4 forms a continuous dynamic coverage along the surface of the toilet seat.

[0047] Specifically, in step S1, the sterilization start signal can be a sterilization command manually input by the user, or an automatic sterilization command generated by the smart toilet when the lid 1 is closed, the user leaves the seat, or the preset cleaning cycle is reached. After receiving the sterilization start signal, the control unit 5 puts the drive mechanism 2 into a driveable state, the adjustment mechanism 3 into an adjustable state, and the sterilization mechanism 4 into a ready state for spraying and irradiation.

[0048] Control unit 5 can receive sterilization permission signals from cover closure switch, seat pressure sensor or human body sensor; if the sterilization permission conditions are not met, control unit 5 prohibits the high temperature gas source and ultraviolet lamp 11 from starting.

[0049] Specifically, in step S2, the position adjustment unit 8 is used to change the longitudinal installation position of the sterilization mechanism 4 relative to the inner wall of the cover plate 1 or the surface of the toilet seat, so that the sterilization mechanism 4 can adapt to seats with different heights, thicknesses or arc positions; the angle adjustment unit 9 is used to change the tilt direction of the sterilization tube 10 and the ultraviolet lamp tube 11, so that the high-temperature gas jet direction and the ultraviolet irradiation direction can face the surface of the toilet seat to be sterilized.

[0050] The target distance for position adjustment is 15-30mm, and the target tilt angle for angle adjustment is 0°-45°. These target values ​​can be pre-stored by the control unit 5 as target parameters corresponding to different seat ring models.

[0051] Specifically, in step S3, the sterilization tube 10 is connected to an external high-temperature gas source. After the high-temperature gas enters the sterilization tube 10 through the connecting channel, it is sprayed out from the gas outlet area of ​​the sterilization tube 10 and acts on the surface of the toilet seat. The high-temperature gas forms a heat-acting zone on the surface of the seat, thereby inhibiting or killing bacteria, microorganisms, or damp residual environments on the surface of the seat.

[0052] The external high-temperature gas source includes a gas storage tank, a heating element, a temperature sensor, and a gas pump. The temperature sensor provides real-time feedback on the gas temperature, and the control unit 5 adjusts the power of the heating element based on the temperature feedback to stabilize the temperature of the high-temperature gas entering the sterilization tube 10 at 80℃-120℃. The gas pump delivers the gas at a flow rate of 10-30L / min.

[0053] Define the current detected gas temperature as Lower limit of the target temperature range upper limit The temperature closed-loop control logic satisfies the following piecewise formula:

[0054] ;

[0055] When the temperature meets the required range, the control unit 5 starts the gas pump to deliver high-temperature gas to the sterilization tube 10 at a flow rate of 10-30L / min.

[0056] Specifically, in step S4, the ultraviolet lamp 11 is fixedly connected to the outer wall of the sterilization tube 10, so that the ultraviolet irradiation area and the high-temperature gas injection area correspond in space. When the ultraviolet lamp 11 is turned on, its irradiation direction changes synchronously with the installation direction of the sterilization tube 10, so that the ultraviolet irradiation and the high-temperature gas injection can work together to cover the surface of the toilet seat.

[0057] High-temperature gas injection and ultraviolet irradiation can be carried out simultaneously, or the surface of the seat ring can be preheated and dried by high-temperature gas first, and then irradiated by ultraviolet lamp 11. The synergistic effect of the two is 5-15 minutes.

[0058] Specifically, in step S5, the drive motor 6 outputs torque, the swing shaft 7 rotates under the drive of the drive motor 6, the adjustment mechanism 3 moves with the swing shaft 7, and thus drives the sterilization mechanism 4 to move along the annular or arc-shaped area of ​​the toilet seat.

[0059] The speed, angle and running time of the drive motor 6 are controlled by the control unit 5. The swing shaft 7 reciprocates from the front end area of ​​the seat ring to the side areas and the rear end area according to the preset path until the preset sterilization time is reached.

[0060] The high-temperature gas ejected from the sterilization tube 10 and the ultraviolet light emitted from the ultraviolet lamp tube 11 move synchronously with the sterilization mechanism 4, so that the sterilization effect is not limited to a single fixed point, but forms a coverage area that moves along the surface of the toilet seat.

[0061] The basic inventive concept of this embodiment is to integrate the high-temperature gas jet component and the ultraviolet irradiation component on the same sterilization mechanism 4, and to form a sterilization execution structure with adjustable position, adjustable angle, and movable path through the position adjustment part 8, the angle adjustment part 9, and the drive mechanism 2.

[0062] Therefore, when faced with toilet seats of different shapes or curvatures, it is not necessary to rely entirely on the preset installation angle of the fixed nozzle or fixed lamp tube. Instead, the sterilization mechanism 4 can be adjusted by adjusting the mechanism 3 to maintain a good correspondence between the sterilization mechanism 4 and the curved surface of the seat.

[0063] In practical applications, toilet seats are usually circular curved structures, and the space between the cover plate 1 and the seat is small. High-temperature gas injection and ultraviolet radiation are affected by distance, angle, obstruction and airflow diffusion direction.

[0064] If only fixed nozzles or fixed UV lamps are used, it is difficult to cover the spray range under different seat curvatures. In addition, UV irradiation is directional, and blind spots are easily created due to mismatched tilt angles.

[0065] In this embodiment, the longitudinally adjustable position adjustment part 8 and the tilt angle adjustable part 9 enable the sterilization tube 10 and the ultraviolet lamp tube 11 to be adapted and adjusted within a limited space. Combined with the swing shaft 7 driving the sterilization mechanism 4 to move, the coverage range is increased while reducing the possibility of insufficient sterilization in local areas.

[0066] Example 2

[0067] The technical solution of this embodiment further refines the start-up control process of step S1 based on the above embodiment 1.

[0068] In step S1, after receiving the sterilization start signal, the control unit 5 does not directly cause the sterilization tube 10 to spray high-temperature gas or directly turn on the ultraviolet lamp tube 11. Instead, it first confirms the working status of the drive mechanism 2, the adjustment mechanism 3 and the sterilization mechanism 4, so that each mechanism enters the preparation state that can execute the sterilization process.

[0069] The control unit 5 first reads the initial signals from the temperature sensor, position sensor, and angle sensor to confirm that the high-temperature gas source, position adjustment unit 8, and angle adjustment unit 9 are in a controllable state.

[0070] The purpose of this setting is to ensure that the subsequent high-temperature gas injection, ultraviolet irradiation, and swing covering actions are carried out in a predetermined sequence, so as to avoid sterilization starting before the sterilization mechanism 4 is adjusted to the appropriate position, resulting in insufficient sterilization in local areas or sterilization effect deviating from the surface of the seat ring.

[0071] The sterilization state refers to the preparatory state in which the drive mechanism 2, the adjustment mechanism 3, and the sterilization mechanism 4 are able to perform subsequent sterilization actions.

[0072] The heating element of the external high-temperature gas source is in a preheating state, the temperature sensor is in a real-time detection state, and the gas pump and suction pump are in a standby state.

[0073] Specifically, the drive motor 6 is in an startable state, the swing shaft 7 is in an initial angle or a preset angle, the position adjustment part 8 is in an adjustable or positioned state, the angle adjustment part 9 is in an adjustable or positioned state, the sterilization tube 10 is in a connected and ready state with the external high-temperature gas source, and the ultraviolet lamp tube 11 is in a ready-to-turn-on state.

[0074] Meanwhile, the external high-temperature gas source, air pump, position sensor, and angle sensor are also electrically connected to the control unit 5, enabling the control unit 5 to achieve joint control of temperature, airflow, position, and angle.

[0075] In this embodiment, the control unit 5 can be established and realize the above-mentioned start control because the drive mechanism 2 and the ultraviolet lamp 11 are both electrically connected to the control unit 5. The control unit 5 can control the working state of the drive mechanism 2 and the ultraviolet lamp 11 in sequence according to the start signal.

[0076] Meanwhile, the adjustment mechanism 3 is located between the drive mechanism 2 and the sterilization mechanism 4, and can preset or correct the position and angle of the sterilization mechanism 4 before the sterilization action is officially executed.

[0077] Specifically, step S1 includes the following sub-steps:

[0078] S11. The control unit 5 receives the sterilization start signal and determines whether the smart toilet seat is in a state that allows sterilization. The state that allows sterilization includes the lid 1 being closed, the seat not being touched by the human body, and the ultraviolet protective cover being installed.

[0079] S12. Under the condition that sterilization is allowed, the control unit 5 controls the drive motor 6 to enter the ready-to-drive state and puts the swing shaft 7 at the preset starting position. The preset starting position can be the position with a swing angle of 0°.

[0080] S13, the control unit 5 controls the ultraviolet lamp tube 11 to be in the standby state and makes the delivery path between the external high temperature gas source and the sterilization tube 10 in the gas supply state. The gas supply state includes the heating element reaching the set temperature, the gas pump being in the standby state, and the connecting hose being sealed and connected to the gas outlet.

[0081] S14. After the adjustment mechanism 3 completes the position adjustment and angle adjustment, the control unit 5 allows the high-temperature gas injection and ultraviolet irradiation steps to begin. When the longitudinal position deviation is no greater than 0.5mm and the angle deviation is no greater than 1°, the control unit 5 determines that the adjustment mechanism 3 has completed the position adjustment and angle adjustment.

[0082] The permissible sterilization state in step S11 can be understood as the formation of a space between the cover plate 1 and the toilet seat that allows for sterilization.

[0083] The preset starting position in step S12 can be determined based on the swing path of the sterilization mechanism 4;

[0084] The gas supply status in step S13 refers to the ability of an external high-temperature gas source to deliver high-temperature gas to the sterilization tube 10, but it is not limited to spraying immediately at that moment.

[0085] The permission to enter in step S14 means that the control unit 5 enables the subsequent steps S3 and S4 to be executed according to the preset logic.

[0086] This embodiment establishes a sterilization-ready state before formal sterilization, matching the timing of the action of high-temperature gas and ultraviolet light with the position and angle of the sterilization mechanism 4. This helps to solve the problem of narrow space between the cover plate 1 and the seat ring, and the problem of spray deviation or irradiation deviation that can easily occur if the sterilization mechanism 4 is not pre-positioned, thus providing a stable execution basis for subsequent covering sterilization.

[0087] Example 3

[0088] Based on the above embodiments, the technical solution of this embodiment further refines the position adjustment, angle adjustment, and motion coverage process in steps S2 and S5. The content described in this embodiment is one of the core improvements of the present invention.

[0089] In step S2, the position adjustment unit 8 is used to adjust the longitudinal position of the sterilization mechanism 4 relative to the toilet seat, and the angle adjustment unit 9 is used to adjust the tilt angle of the sterilization tube 10 and the ultraviolet lamp tube 11 relative to the surface of the toilet seat.

[0090] Because toilet seats typically have a circular curved surface structure, and the width, thickness, curvature, and gap between the seat and the lid may vary between different models of toilet seats, fixed sterilization nozzles or fixed ultraviolet lamps cannot simultaneously achieve sterilization coverage in different areas.

[0091] Therefore, this embodiment does not simply increase the number of nozzles or increase the power of the ultraviolet lamps, but rather adjusts the spatial position and irradiation / spray angle of the sterilization mechanism 4 so that the sterilization direction can actively adapt to the surface of the seat ring.

[0092] The design principle of this embodiment is that the effective area of ​​high-temperature gas injection depends not only on the gas temperature, but also on the injection direction, injection distance, and the relative position of the injection area and the seat surface.

[0093] The effective area of ​​ultraviolet irradiation depends not only on the lamp itself, but also on the irradiation angle, irradiation distance, and whether there is any obstruction.

[0094] By fixing the sterilization tube 10 and the ultraviolet lamp tube 11 to the same sterilization mechanism 4 and simultaneously adjusting their tilt angles through the angle adjustment unit 9, the high-temperature gas injection area and the ultraviolet irradiation area can maintain a relatively consistent spatial orientation, avoiding the problem that one area is covered while the other area is off-center when they are set separately.

[0095] Specifically, the position adjustment process includes the following steps:

[0096] S21. Based on the height, width, or arc position of the toilet seat surface, the position adjustment unit 8 is moved along a preset direction on the inner wall of the cover plate 1. The control unit 5 reads the current position L fed back by the position sensor and sets the current position... With the target location Compare;

[0097] S22. When the distance between the sterilization mechanism 4 and the toilet seat surface reaches the preset matching position, the position adjustment unit 8 positions the sterilization mechanism 4. The difference is no greater than 0.5mm. Control unit 5 stops the drive motor and locks the sliding seat via a positioning screw or self-locking transmission structure. If... If the difference is greater than 0.5mm, control unit 5 continues to output pulse signals to drive the sliding block to move;

[0098] Define the positional deviation as The current detection location is The preset target location is The formula for calculating positional deviation is: ;

[0099] The conditions for determining whether the position adjustment is in place are: ;

[0100] When the judgment condition is met, the control unit 5 stops the position drive motor and locks the sliding seat; when the condition is not met, it continues to output pulse signals to drive the sliding seat to move in the direction of decreasing deviation.

[0101] S23. After the sterilization mechanism 4 completes its longitudinal positioning, the angle adjustment unit 9 causes the sterilization tube 10 and the ultraviolet lamp tube 11 to rotate or deflect relative to the toilet seat surface. The control unit 5 reads the current angle fed back by the angle sensor. and the current angle From the perspective of the target Compare;

[0102] S24. When the spray direction of the sterilization tube 10 and the irradiation direction of the ultraviolet lamp tube 11 are both directed towards the surface of the toilet seat to be sterilized, the angle adjustment part 9 is positioned. If the angle is not greater than 1°, control unit 5 stops the angle adjustment motor and maintains the angle through motor self-locking or worm gear self-locking; if If the angle is greater than 1°, the control unit 5 continues to drive the arc-shaped slider to move along the arc-shaped slide rail;

[0103] The deviation of the angle is The current detection angle is The preset target angle is The formula for calculating the angle deviation is: ;

[0104] The criteria for determining whether the angle adjustment is in place are: ;

[0105] When the condition is met, control unit 5 stops the angle adjustment motor and maintains the angle through a self-locking structure; when the condition is not met, it continues to drive the arc-shaped slider to move along the arc-shaped slide rail.

[0106] Furthermore, in step S5, the drive motor 6 drives the swing shaft 7 to rotate, and the swing shaft 7 drives the angle adjustment part 9 and the sterilization mechanism 4 to move as a whole, so that the sterilization tube 10 and the ultraviolet lamp tube 11 swing to cover the corresponding area of ​​the toilet seat surface.

[0107] The swing-type coverage path is a reciprocating arc path centered on the swing axis 7, with a swing angle range of 0°-180° and a swing frequency of 0.1-0.5Hz; the control unit 5 controls the number of reciprocations according to the preset sterilization time, so that the spray area and irradiation area cover the front, sides and rear of the toilet seat in sequence.

[0108] This swing-type covering does not simply move the sterilization mechanism 4, but rather, based on the completed position and angle adjustments, it allows the sterilization mechanism 4 to move in a posture suitable for the curved surface of the seat ring, thereby improving the dynamic coverage continuity of the high-temperature gas injection area and the ultraviolet irradiation area.

[0109] In this embodiment, the position adjustment unit 8 includes a sliding seat and a positioning screw. The sliding seat is slidably connected to the bottom of the inner wall of the cover plate 1, and the positioning screw passes through the sliding seat and is threadedly connected to the cover plate 1 to lock the sliding seat. The longitudinal position is adjusted by the sliding seat, and the mechanical locking after adjustment is achieved by the positioning screw, which can keep the sterilization mechanism 4 in a stable position during the sterilization process.

[0110] In the automatic implementation, the position adjustment unit 8 also includes a position drive motor and a lead screw and nut pair or a gear and rack pair. The position drive motor drives the sliding seat to move along the inner wall of the cover plate 1, and the positioning screw is used for auxiliary locking during debugging or maintenance.

[0111] In this embodiment, the angle adjustment part 9 includes an arc-shaped slide rail and an arc-shaped slider. The arc-shaped slide rail is fixedly connected to the end of the swing shaft 7, and the arc-shaped slider is slidably connected to the inner wall of the arc-shaped slide rail and fixedly connected to the outer wall of the sterilization tube 10.

[0112] The angle adjustment unit 9 also includes an angle adjustment motor, a transmission gear and an arc-shaped rack. The angle adjustment motor is fixed to the inner wall of the arc-shaped slide rail or the cover plate 1. The transmission gear meshes with the arc-shaped rack, and the arc-shaped slider moves in a controlled manner along the arc-shaped slide rail under the drive of the transmission gear.

[0113] The curved slide rail provides a curved adjustment path. When the curved slider moves along the curved slide rail, it can change the tilt angle of the sterilization tube 10 and the ultraviolet lamp tube 11.

[0114] Compared to linear adjustment, arc adjustment is more suitable for angle matching of ring-shaped or curved seat rings.

[0115] Furthermore, the adjustment mechanism 3 also includes a position sensor and an angle sensor.

[0116] A position sensor is fixedly connected to the inner wall of the cover plate 1 and is set opposite to the outer wall of the slide seat to detect the position status of the slide seat; an angle sensor is fixedly connected to the outer wall of the arc-shaped slide rail and is electrically connected to the control unit 5 to detect the angle status of the angle adjustment part 9.

[0117] The position sensor can be a potentiometer-type position sensor or an infrared ranging sensor, with a detection range of 0-50mm, a detection accuracy of ±0.5mm, and an output of 0-5V analog voltage signal or digital signal; the angle sensor can be a rotary potentiometer or a magnetic angle sensor, with a detection range of 0°-90°, a detection accuracy of ±1°, and an output of analog voltage signal or digital signal.

[0118] The control unit 5 can determine whether the sterilization mechanism 4 is in a suitable position and angle to perform the sterilization action based on the detection results of the position sensor and the angle sensor.

[0119] Specifically, the target position parameters are pre-stored in the control unit 5. and target angle parameters Control unit 5 calculates position deviation and angle deviation ,when Not greater than 0.5mm and When the angle is no greater than 1°, the sterilization mechanism 4 is determined to be in a position and angle suitable for performing the sterilization action;

[0120] The comprehensive criteria for determining whether a position is qualified satisfy the following simultaneous formulas: ;

[0121] When both of the above conditions are met, the sterilization mechanism is deemed to be in a qualified position and can proceed to the subsequent sterilization process.

[0122] The position sensor detects the position of the sliding seat relative to the inner wall of the cover plate in real time and transmits the position signal to the control unit; the control unit calculates the longitudinal position adjustment amount based on the deviation between the preset position parameters and the actual position signal and drives the position adjustment unit to move.

[0123] The control unit 5 can use proportional-integral-derivative closed-loop control or pulse stepping control to determine the direction of rotation, number of pulses and stopping time of the position drive motor according to the direction and magnitude of the deviation.

[0124] When using proportional-integral-derivative (PID) closed-loop control, the first... Position control quantity at sampling time The calculation formula is: ;

[0125] In the formula: This is the position ring scaling factor; These are the integral coefficients of the position loop; These are the differential coefficients of the position ring; For the first Positional deviation at any given time; The system sampling period; This is the integral cumulative term for the positional deviation; Let be the differential rate of change of the positional deviation.

[0126] The control unit outputs the corresponding number of pulses based on the control quantity, driving the position drive motor to operate and realizing closed-loop adjustment of the position.

[0127] Similarly, the angle sensor detects the angle of the arc-shaped slider relative to the arc-shaped slide rail and transmits the angle signal to the control unit to achieve closed-loop angle control;

[0128] Control unit 5 controls the rotation of the angle adjustment motor according to the angle deviation, so that the arc-shaped slider moves along the arc-shaped slide rail until the angle sensor feedback value meets the target angle threshold.

[0129] When the angle loop uses PID closed-loop control, the first... Angle control quantity at sampling time The calculation formula is: ;

[0130] In the formula: This is the angle ring proportionality coefficient; For the integral coefficients of the angle ring; These are the differential coefficients of the angle ring; For the first The angle deviation at any given time; the control unit drives the angle adjustment motor to operate according to this control quantity, thereby realizing closed-loop angle adjustment.

[0131] This embodiment combines longitudinal position adjustment, tilt angle adjustment, and swing path coverage to unify high-temperature gas sterilization and ultraviolet sterilization under the same motion coordinate, enabling both sterilization effects to adapt to the seat ring surface.

[0132] This method helps to overcome the problem of insufficient adaptability of fixed spraying or fixed irradiation under different seat ring curvatures, and can achieve high coverage uniformity in the limited space between the cover plate 1 and the seat ring.

[0133] Example 4

[0134] This embodiment provides a high-temperature gas and ultraviolet sterilization device for a smart toilet seat, used to implement the sterilization method described in any of the above embodiments.

[0135] like Figures 1-5 As shown, the high-temperature gas and ultraviolet sterilization device of the smart toilet seat includes: a cover plate 1, a drive mechanism 2, an adjustment mechanism 3, a sterilization mechanism 4, and a control unit 5.

[0136] The cover plate 1 is fixedly connected to the top of the toilet seat, and a space is formed between the cover plate 1 and the toilet seat to accommodate the sterilization mechanism 4 and allow the sterilization mechanism 4 to move.

[0137] The drive mechanism 2 is fixedly connected to the bottom of the inner wall of the cover plate 1. The adjustment mechanism 3 is movably connected to the output end of the drive mechanism 2. The sterilization mechanism 4 is fixedly connected to the output end of the adjustment mechanism 3 and is used to spray gas and irradiate ultraviolet light on the surface of the seat ring. The control unit 5 is fixedly connected to the inner wall of the cover plate 1 and electrically connected to the drive mechanism 2. The control unit 5 is also electrically connected to the external high-temperature gas source, the external air pump, the ultraviolet lamp 11, the position sensor, the angle sensor, the position drive motor, and the angle adjustment motor.

[0138] The drive mechanism 2 includes a drive motor 6 and a swing shaft 7. The drive motor 6 is fixedly connected to the bottom of the inner wall of the cover plate 1, and the swing shaft 7 is rotatably connected to the output end of the drive motor 6. When the drive motor 6 is working, it drives the swing shaft 7 to rotate, and the swing shaft 7 further drives the adjustment mechanism 3 and the sterilization mechanism 4 to move.

[0139] The drive motor 6 outputs low-speed torque through the reducer, causing the swing shaft 7 to reciprocate within a preset angle range of 0°-180°.

[0140] Through this structure, the sterilization mechanism 4 can swing around the corresponding area of ​​the toilet seat, thereby expanding the sterilization area from a local fixed point to a dynamic coverage area.

[0141] Furthermore, the drive mechanism 2 also includes a reducer, which is fixedly connected to the output end of the drive motor 6 and is connected to the swing shaft 7 in a transmission manner.

[0142] The reducer is used to reduce the speed of the swing shaft 7 and improve the output stability, so that the sterilization mechanism 4 can perform clogging sterilization in a more stable motion state. The control unit 5 controls the swing frequency to 0.1-0.5Hz through the drive motor 6 and the reducer, and controls the number of reciprocating swings according to the sterilization time of 5-15 minutes.

[0143] The adjustment mechanism 3 includes a position adjustment part 8 and an angle adjustment part 9. The position adjustment part 8 is slidably connected to the inner wall of the cover plate 1 and is used to adjust the longitudinal position of the sterilization mechanism 4 relative to the toilet seat. The angle adjustment part 9 is rotatably connected to the end of the swing shaft 7 and is used to adjust the tilt angle of the sterilization mechanism 4.

[0144] With the cooperation of the position adjustment part 8 and the angle adjustment part 9, the sterilization mechanism 4 can be adapted to different curvatures and different installation gaps of the toilet seat.

[0145] The position adjustment part 8 includes a sliding seat and a positioning screw. The sliding seat is slidably connected to the bottom of the inner wall of the cover plate 1, and the positioning screw passes through the sliding seat and is threadedly connected to the cover plate 1 to lock the sliding seat.

[0146] In the automatic adjustment structure, the position adjustment unit 8 also includes a position drive motor and a screw and nut pair or a gear and rack pair. The position drive motor drives the sliding seat to move along the inner wall of the cover plate 1, so that the distance between the sterilization mechanism 4 and the seat ring surface is maintained within the range of 15-30mm.

[0147] During adjustment, the sliding seat moves relative to the cover plate 1 to change the longitudinal position of the sterilization mechanism 4. After adjustment, the sliding seat is locked by the positioning screw to prevent the sterilization mechanism 4 from undergoing undesirable displacement during sterilization. The position drive motor can be a stepper motor. The control unit 5 determines the number of pulses and the stopping time of the stepper motor based on the feedback value of the position sensor.

[0148] The angle adjustment unit 9 includes an arc-shaped slide rail and an arc-shaped slider. The arc-shaped slide rail is fixedly connected to the end of the swing shaft 7, and the arc-shaped slider is slidably connected to the inner wall of the arc-shaped slide rail and is sealed and connected to the outer wall of the sterilization tube 10. The angle adjustment unit 9 also includes an angle adjustment motor, a transmission gear and an arc-shaped rack. The transmission gear meshes with the arc-shaped rack, thereby converting the rotational motion of the angle adjustment motor into the arc-shaped displacement of the arc-shaped slider along the arc-shaped slide rail.

[0149] When the arc-shaped slider slides along the arc-shaped slide rail, it can drive the sterilization tube 10 and the ultraviolet lamp tube 11 to change the tilt angle, so that the high-temperature gas jet direction and the ultraviolet irradiation direction are towards the toilet seat surface to be sterilized.

[0150] The adjustment angle range of the arc-shaped slider is 0°-45°. The angle adjustment motor can be a stepper motor or a servo motor, and self-locking after adjustment can be achieved through motor holding force or worm gear structure.

[0151] The sterilization mechanism 4 includes a sterilization tube 10 and an ultraviolet lamp tube 11. The sterilization tube 10 is fixedly connected to the output end of the angle adjustment part 9 and is connected to an external high-temperature gas source. The ultraviolet lamp tube 11 is fixedly connected to the outer wall of the sterilization tube 10.

[0152] Since the ultraviolet lamp tube 11 is fixed to the outer wall of the sterilization tube 10, the two change position and angle synchronously under the drive of the adjustment mechanism 3, so that the high-temperature gas injection area and the ultraviolet irradiation area can form a good correspondence.

[0153] Furthermore, the external high-temperature gas source includes a gas storage tank, a heating element, a temperature sensor, and a gas pump. The gas storage tank is used to store compressed air or air filtered through a filter; the heating element is located inside the gas storage tank or in the gas delivery pipeline, and is used to heat the gas to 80℃-120℃; the temperature sensor is located in the gas pipeline downstream of the heating element, and is used to detect the gas temperature before it enters the sterilization tube 10; the gas pump is located in the pipeline between the external high-temperature gas source and the sterilization tube 10, and is used to deliver the high-temperature gas to the sterilization tube 10.

[0154] Furthermore, the control unit 5 compares the temperature value T fed back by the temperature sensor with the set temperature T0. When T is lower than the set temperature range, the control unit 5 increases the power of the heating element; when T is higher than the set temperature range, the control unit 5 reduces or cuts off the power of the heating element; when T is maintained within the range of 80℃-120℃, the control unit 5 starts the gas pump to supply gas to the sterilization tube 10.

[0155] Furthermore, the sterilization mechanism 4 also includes a mounting bracket and a connecting hose. The mounting bracket is fixedly connected to the bottom of the arc-shaped slider, and the sterilization tube 10 is fixedly connected to the inner wall of the mounting bracket. One end of the connecting hose is fixedly connected to the outer wall of the sterilization tube 10, and the other end is sealed and connected to the air outlet.

[0156] The connecting hose can maintain the continuity of the gas delivery path when the sterilization mechanism 4 is adjusted in position, angle or swing, thereby avoiding the limitation of the adjustment range of the sterilization mechanism 4 by rigid pipeline.

[0157] The connecting hose is made of silicone corrugated tubing or polytetrafluoroethylene expansion tubing with a temperature resistance of 150℃ or higher, an inner diameter of 3-8mm, a wall thickness of 1-2mm, a minimum allowable bending radius of 15-20mm, and a maximum working pressure of 0.3MPa. Both ends are fixed by clamps, quick-connect fittings, and O-rings respectively. During the reciprocating swing of the swing shaft 7, the connecting hose compensates for the displacement changes generated by the sterilization mechanism 4 through its own corrugated expansion or flexible bending.

[0158] An air intake and an air outlet are provided on the top of the cover plate 1. The air intake is connected to an external air pump, and the air outlet is connected to the sterilization tube 10 to deliver high-temperature gas to the space between the seat ring and the cover plate 1. The air intake and air outlet form a gas flow path between the cover plate 1 and the seat ring, which is conducive to the high-temperature gas entering the sterilization area and acting on the surface of the seat ring.

[0159] The external suction pump has a power of 5-15W and a suction flow rate of 10-30L / min. The suction port is located on one side of the top of the cover plate 1 or in the airflow end area, and the air outlet is located on the other side of the top of the cover plate 1 or in the airflow start area. The control unit 5 controls the external suction pump and the gas pump to start synchronously, so that the high temperature gas flows along the surface of the seat ring and is drawn out by the suction port, thereby reducing moisture retention and heat loss.

[0160] Furthermore, a sealing ring is fixedly connected to the inner wall of the cover plate 1. The sealing ring is located around the air outlet and is used to improve the sealing between the air outlet and the connecting hose or related conveying parts, reducing the possibility of leakage of high-temperature gas during the conveying process. Limiting blocks are also fixedly connected to the inner wall of the cover plate 1. The limiting blocks are located at both ends of the sliding seat's movement path and are used to limit the sliding seat's movement range, preventing the position adjustment part 8 from exceeding the predetermined adjustment stroke. The sealing ring can be a heat-resistant silicone ring or a fluororubber ring. The limiting blocks and the position sensor work together to determine the mechanical stroke boundary of the sliding seat.

[0161] Furthermore, a protective cover is fixedly connected to the outer wall of the cover plate 1, and the protective cover is fitted over the outside of the ultraviolet lamp tube 11. The protective cover is used to protect the ultraviolet lamp tube 11 and reduce the possibility of ultraviolet rays leaking out in a non-predetermined direction, thereby improving the safety of use and the reliability of the structure.

[0162] The protective cover is made of UV-blocking metal material or engineering plastic material with UV blocking properties, so that the UV transmittance in non-predetermined directions is no more than 0.1%; the protective cover forms an irradiation opening facing the surface to be sterilized on the side near the seat ring surface, and the control unit 5 activates the UV lamp tube 11 only when the cover plate 1 is closed and the permissible sterilization conditions are met.

[0163] Furthermore, heat insulation baffles or heat-conducting heat dissipation layers are provided on the inner wall of the cover plate 1 corresponding to the positions of the control unit 5, drive motor 6, position sensor and angle sensor.

[0164] The heat insulation baffle can be made of heat-resistant plastic, mica sheet or thin metal plate, and the heat conduction and heat dissipation layer can be made of thermally conductive silicone sheet or metal heat sink to reduce the impact of high temperature gas of 80℃-120℃ and UVC ultraviolet rays on electronic components, sensors and flexible pipelines.

[0165] When the device in this embodiment is in use, the control unit 5 receives a sterilization start signal and first causes the drive mechanism 2, the adjustment mechanism 3 and the sterilization mechanism 4 to enter the sterilization state.

[0166] Then, the longitudinal position of the sterilization mechanism 4 relative to the toilet seat is adjusted by the position adjustment unit 8, and the tilt angle of the sterilization tube 10 and the ultraviolet lamp tube 11 is adjusted by the angle adjustment unit 9.

[0167] Subsequently, an external high-temperature gas source delivers high-temperature gas to the sterilization tube 10, and the high-temperature gas is sprayed onto the surface of the toilet seat through the sterilization tube 10. During this process, the control unit 5 adjusts the power of the heating element according to the feedback signal from the temperature sensor, and adjusts the position drive motor and the angle adjustment motor according to the feedback signals from the position sensor and the angle sensor.

[0168] Simultaneously or subsequently, the control unit 5 activates the ultraviolet lamp 11 to irradiate the toilet seat surface with ultraviolet light. Finally, the drive motor 6 rotates the swing shaft 7, causing the adjustment mechanism 3 to move the sterilization mechanism 4 around the toilet seat, thus covering the toilet seat surface with the high-temperature gas injection area and the ultraviolet irradiation area. High-temperature gas injection and ultraviolet irradiation can be performed simultaneously for 5-15 minutes, or in a sequence of high-temperature gas injection followed by ultraviolet irradiation, both moving synchronously on the same sterilization mechanism 4, achieving time and spatial coordination.

[0169] As can be seen from the above embodiments, by setting a driving mechanism 2, an adjusting mechanism 3, and a sterilization mechanism 4 inside the cover plate 1, the present invention enables the sterilization tube 10 and the ultraviolet lamp tube 11 to complete position adjustment, angle adjustment, and swing coverage within the limited space between the seat ring and the cover plate 1. Compared with a fixed sterilization structure, the present invention can better adapt to the curved shape of different toilet seats, which is beneficial to improving the uniformity of coverage of the seat surface by high-temperature gas and ultraviolet light, and reducing the possibility of sterilization blind spots. At the same time, the temperature control structure of the external high-temperature gas source, the sensor closed-loop control logic, the swing path parameters, the sealing structure of the connecting hose, and the ultraviolet protection structure have all formed specific and implementable technical means.

[0170] Based on the preferred embodiments of the present invention described above, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-temperature gas and ultraviolet sterilization device for a smart toilet seat, comprising: Cover plate (1), drive mechanism (2), adjustment mechanism (3) and sterilization mechanism (4). Its characteristics are: The drive mechanism (2) is disposed on the cover plate (1), the adjustment mechanism (3) is connected to the drive mechanism (2) in a transmission manner, and the sterilization mechanism (4) is connected to the adjustment mechanism (3); The drive mechanism (2) includes a drive motor (6) and a swing shaft (7) that is connected to the drive motor (6) in a transmission. The adjustment mechanism (3) includes a position adjustment part (8) and an angle adjustment part (9). The position adjustment part (8) is connected between the cover plate (1) and the sterilization mechanism (4) and can move in a direction close to or away from the toilet seat surface. The angle adjustment part (9) is connected between the swing shaft (7) and the sterilization mechanism (4). The sterilization mechanism (4) includes a sterilization tube (10) and an ultraviolet lamp tube (11). The sterilization tube (10) is connected to a gas heating source. The ultraviolet lamp tube (11) is fixed to the outer wall of the sterilization tube (10). A protective cover is provided on the outside of the ultraviolet lamp tube (11). An irradiation opening is provided on the side of the protective cover facing the toilet seat surface. The sterilization tube (10) and the ultraviolet lamp tube (11) can change their tilt angle relative to the toilet seat surface with the angle adjustment part (9), and can swing relative to the toilet seat with the swing shaft (7).

2. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 1, characterized in that: The drive mechanism (2) includes a drive motor (6) and a swing shaft (7). The drive motor (6) is located on the inner wall of the cover plate (1). The swing shaft (7) is connected to the output end of the drive motor (6). The adjustment mechanism (3) is connected to the output end of the swing shaft (7) so that the drive motor (6) drives the adjustment mechanism (3) and the sterilization mechanism (4) to swing back and forth around the toilet seat through the swing shaft (7) to achieve dynamic coverage of the sterilization area.

3. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 2, characterized in that: The angle adjustment part (9) includes an arc-shaped slide rail and an arc-shaped slider. The arc-shaped slide rail is connected to the end of the swing shaft (7). The arc-shaped slider is slidably connected to the arc-shaped slide rail. The sterilization tube (10) is connected to the arc-shaped slider.

4. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 3, characterized in that: The sterilization mechanism (4) further includes: a mounting bracket and a connecting hose. The mounting bracket is connected to the arc-shaped slider, the sterilization tube (10) is fixed to the mounting bracket, one end of the connecting hose is sealed and connected to the sterilization tube (10), and the other end is sealed and connected to the air outlet provided on the cover plate (1).

5. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 4, characterized in that: The cover plate (1) is also provided with an air inlet, the air outlet is connected to the sterilization tube (10) through the connecting hose, and the air inlet is connected to the air inlet device.

6. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 1, characterized in that: The drive mechanism (2) also includes a reducer, which is connected between the drive motor (6) and the swing shaft (7).

7. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 6, characterized in that: It also includes a control unit (5), a position sensor, an angle sensor, a position drive motor, and an angle adjustment motor; the position drive motor is connected to the sliding seat via a lead screw and nut pair or a gear and rack pair, and the angle adjustment motor is connected to the arc-shaped slider via a transmission gear and an arc-shaped rack; the position sensor is set corresponding to the sliding seat, and the angle sensor is set corresponding to the arc-shaped slider; the control unit (5) is electrically connected to the drive motor (6), the ultraviolet lamp (11), the position drive motor, the angle adjustment motor, the position sensor, and the angle sensor respectively.

8. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 5, characterized in that: The inner wall of the cover plate (1) is provided with a sealing ring surrounding the air outlet.

9. The high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to claim 2, characterized in that: The inner wall of the cover plate (1) is provided with two limiting blocks, which are located at both ends of the moving path of the sliding seat.

10. A method for high-temperature gas and ultraviolet sterilization of a smart toilet seat, based on the high-temperature gas and ultraviolet sterilization device for a smart toilet seat according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The control unit (5) receives the sterilization start signal and, after detecting that the cover (1) is closed and the toilet seat is unused, controls the drive mechanism (2), adjustment mechanism (3) and sterilization mechanism (4) to start. S2. The control unit (5) controls the position adjustment unit (8) to adjust the position of the sterilization mechanism (4) relative to the toilet seat according to the detection signals of the position sensor and the angle sensor, and controls the angle adjustment unit (9) to adjust the tilt angle of the sterilization tube (10) and the ultraviolet lamp tube (11) relative to the surface of the toilet seat. S3. Control the external high-temperature gas source to deliver high-temperature gas at a temperature of 80℃~120℃ to the sterilization tube (10), so that the high-temperature gas is sprayed onto the surface of the toilet seat through the sterilization tube (10). S4. Control the ultraviolet lamp (11) to emit ultraviolet light with a main peak wavelength of 260nm~280nm, so that the ultraviolet light irradiates the surface of the toilet seat. S5. The control drive motor (6) drives the adjustment mechanism (3) and the sterilization mechanism (4) to swing back and forth through the swing shaft (7), so that the sterilization tube (10) and the ultraviolet lamp tube (11) move synchronously along the toilet seat. The swing angle range of the swing shaft (7) is 0°-180° and the swing frequency is 0.1Hz-0.5Hz.

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