Three-in-one control box

Abstract

The invention provides a three-in-one control box which comprises a water supply unit, a soap supply unit and a hand drying unit which are independently arranged, and a main control circuit board is arranged in one of the water supply unit, the soap supply unit and the hand drying unit; the water supply unit comprises a water supply shell and an electromagnetic valve arranged in the water supply shell; the soap feeding unit comprises a liquid soap control box and a liquid soap box, and a liquid soap delivery pump is arranged in the liquid soap control box; the hand drying unit comprises a hand drying shell, and a fan is arranged in the hand drying shell; the main control circuit board is respectively connected with the electromagnetic valve, the liquid soap delivery pump and the fan through wires, and the parts, penetrating out of the water supply shell, the liquid soap control box or the hand drying shell, of the wires are connected through disconnected terminal connecting wires. The circuit connection among the units adopts the breakable terminal connecting wires, so that when any unit breaks down, the whole control box does not need to be disassembled, and only the terminal connecting wire corresponding to the faulted unit needs to be disconnected, and the faulted unit can be directly and independently disassembled for maintenance or replacement.

Description

Technical Field

[0001] This invention relates to the field of bathroom technology, specifically to a three-in-one control box. Background Technology

[0002] Chinese patent document CN222185985U discloses a multi-functional faucet that integrates multiple functions such as water dispensing, hand drying, and soap dispensing. It is equipped with a control box, which centrally houses the blower module, liquid dispensing control mechanism, solenoid valve, and control board. This control box is installed below the countertop where the faucet body is located. Due to significant differences in the operating conditions of different functional modules—for example, vibrations generated by the blower module can easily be transmitted to precision components such as the solenoid valve and control board, causing control signal distortion and solenoid valve response delays, thus affecting the stability of the equipment's operation—the problem arises. When a module malfunctions and requires repair, the entire control box must be disassembled and reassembled, making independent maintenance of individual modules impossible. This significantly increases the difficulty and cost of after-sales maintenance and reduces the product's ease of use. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to propose a three-in-one control box to solve the problems mentioned in the background section above.

[0004] This invention is achieved through the following technical solution: A three-in-one control box includes independently arranged water supply unit, soap dispensing unit, and hand drying unit. One of these units has a built-in main control circuit board. The water supply unit includes a water supply housing, a temperature regulating valve core, and a solenoid valve. The water supply unit also has a cold water inlet channel, a hot water inlet channel, and a mixing water outlet channel. Both the temperature regulating valve core and the solenoid valve are built into the water supply housing. The temperature regulating valve core is used to adjust the water flow rate of the cold water inlet channel and the hot water inlet channel. The solenoid valve is used to open or close the mixing water outlet channel. The water flow path of the water outlet channel; the soap dispensing unit includes a soap liquid control box and a soap liquid tank, the soap liquid control box has a built-in soap liquid delivery pump, the soap liquid delivery pump is used to deliver the soap liquid in the soap liquid tank to the faucet; the hand drying unit includes a hand drying housing, the hand drying housing has a built-in fan, the fan supplies air to the faucet; the main control circuit board is connected to the solenoid valve, the soap liquid delivery pump and the fan respectively through wires, the wires passing through the water supply housing, the soap liquid control box or the hand drying housing are all connected by disconnectable terminal wires.

[0005] Furthermore, the water supply unit also includes a water control drive board, the main control circuit board is connected to the water control drive board, and the water control drive board is connected to the solenoid valve; the soap supply unit also includes a soap control drive board, the main control circuit board is connected to the soap control drive board, and the soap control drive board is connected to the soap liquid delivery pump; the hand drying unit also includes a fan control drive board, the main control circuit board is connected to the fan control drive board, and the fan control drive board is connected to the fan.

[0006] Furthermore, the water supply unit, soap supply unit, and hand drying unit are combined to form a cube or cuboid shape. The notch formed by one end of the soap liquid control box and the upper end of the soap liquid tank is used to place the water supply unit. The hand drying unit is provided on the other end of the soap liquid control box and the soap liquid tank. The main control circuit board is built into the soap liquid control box.

[0007] Furthermore, the water supply unit, soap supply unit, and hand dryer unit are all powered independently.

[0008] Furthermore, the water supply unit, soap supply unit, and hand drying unit are connected by connectors.

[0009] Furthermore, the soap dispensing unit includes a soap liquid control box and a soap adding assembly. The lower end of the soap liquid control box is provided with a soap liquid tank. The soap adding assembly includes a soap adding tube and a tube cap. The lower end of the soap adding tube is threaded to the soap liquid tank. The upper end of the soap adding tube passes through the soap liquid control box. The tube cap is used to prevent foreign objects from falling into the soap liquid tank along the open end of the soap adding tube. The soap liquid control box is equipped with a soap liquid delivery pump. The inlet end of the soap liquid delivery pump is connected to the soap liquid tank, and the outlet end of the soap liquid delivery pump is connected to the soap liquid output terminal.

[0010] Furthermore, the soap dispenser includes a body and a sealing plug. The body is integrally formed with a liquid outlet pipe. The lower end of the liquid outlet pipe forms a hollow portion. The hollow portion is connected to the liquid storage space of the body. The hollow portion passes through the bottom of the body and forms a soap discharge port. The sealing plug is used to seal the soap discharge port.

[0011] Furthermore, the soap-adding assembly also includes a nut, which is located at the upper end of the soap liquid control box, and the soap-adding tube is connected to the external thread of the nut.

[0012] Furthermore, the soap liquid control box is equipped with an air pump, and the upper end of the soap liquid control box is provided with a soap outlet port and an air outlet port, as well as a mixing chamber connecting the soap outlet port and the air outlet port. The air outlet end of the air pump is connected to the air outlet port, and the liquid outlet end of the soap liquid delivery pump is connected to the soap outlet port. Furthermore, the hand dryer housing is provided with an air outlet, and a fan-shaped pressure cover is provided between the fan and the air outlet. The fan-shaped pressure cover is provided with several oblique air guide plates arranged in a circular array.

[0013] The beneficial effects of this invention are as follows: the water supply unit, soap dispensing unit, and hand drying unit are designed with independent structures, and the circuit connections between the units adopt disconnectable terminal connection wires, eliminating the rigid wiring method of traditional integrated control boxes. When any unit malfunctions, it is not necessary to disassemble the entire control box; simply disconnect the terminal connection wire corresponding to the faulty unit to directly disassemble, repair, or replace the faulty unit individually. Attached Figure Description

[0014] Figure 1 This is a perspective view of a three-in-one control box according to the present invention.

[0015] Figure 2 This is an exploded view of a three-in-one control box according to the present invention.

[0016] Figure 3 This is a diagram showing the internal structure of the water supply unit of the present invention.

[0017] Figure 4 This is a perspective view of the soap-making unit of the present invention, in embodiment one.

[0018] Figure 5 This is an exploded view of the soap-making unit of the present invention, in embodiment one.

[0019] Figure 6 This is a centered cross-sectional view of the soap-making unit of the present invention, in Embodiment 1.

[0020] Figure 7 This is a perspective view of Embodiment 2 of the soap-making unit of the present invention.

[0021] Figure 8 This is a center-cross view of the soap-giving unit in Embodiment 2 of the present invention.

[0022] Figure 9 This is an exploded view of Embodiment 2 of the soap-giving unit of the present invention.

[0023] Figure 10 This is a perspective view of the soap-making unit of the present invention, in embodiment three.

[0024] Figure 11 This is a center-cross view of the soap-giving unit in Embodiment 3 of the present invention.

[0025] Figure 12 This is a perspective view of the soap-adding component in Embodiment 3 of the present invention.

[0026] Figure 13 This is an exploded view of the soap-adding assembly in Embodiment 3 of the present invention.

[0027] Figure 14 This is a perspective view of the soap dispenser of the present invention.

[0028] Figure 15 This is an exploded view of the soap dispenser of the present invention.

[0029] Figure 16 This is a perspective view of the housing of the present invention.

[0030] Figure 17 This is a centered cross-sectional view of the hand dryer housing of the present invention.

[0031] Figure 18 This is an exploded view of the hand dryer housing of the present invention.

[0032] Figure 19 This is a perspective view of the fan-shaped pressure cap of the present invention.

[0033] Figure 20 This is a perspective view of the positioning shell of the present invention.

[0034] The above figures include the following reference numerals: 1. Water supply unit; 11. Water supply housing; 12. Water control drive board; 13. Temperature control valve core; 14. Solenoid valve; 15. Cold water inlet channel; 16. Hot water inlet channel; 17. Mixing water outlet channel; 18. Temperature control knob; 2. Soap dispensing unit; 21. Soap liquid control box; 211. Soap control drive board; 212. Soap liquid delivery pump; 213. Air pump; 214. Second battery pack; 215. Soap outlet end 216. Air outlet; 22. Soap liquid tank; 221. Tank body; 2211. Liquid outlet pipe; 2212. Perforated section; 2213. Soap liquid discharge port; 2214. Base plate; 222. Sealing assembly; 2221. Sealing plug; 2222. One-way valve; 2223. Filter screen; 223. Tank cover; 2231. Positioning groove; 23. Soap adding assembly; 231. Soap adding pipe; 232. Pipe cap 233. Nut; 234. Piston; 2341. Waterproof and breathable valve; 235. Extension tube; 236. Snap-fit ​​component; 237. Locking component; 238. Threaded snap-fit ​​component; 239. Buffer pad; 3. Hand drying unit; 31. Hand drying housing; 311. Air outlet; 312. First outer shell; 313. Second outer shell; 314. Positioning shell; 3141. Positioning cavity; 3142. Air vent; 32. Wind control drive board; 321. Heat sink; 33. Fan; 34. Fan blade-shaped pressure cover; 341. Slanted air guide plate; 35. First buffer pad; 36. Second buffer pad; 37. Heating element; 38. Dustproof net; 4. Main control circuit board; 5. Terminal connection wire; 6. Connector; 61. Base plate; 62. Front limit plate; 63. Rear baffle; 64. First side baffle; 65. Second side baffle. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] Reference Figures 1 to 20 As shown, a three-in-one control box includes independently arranged water supply unit 1, soap dispensing unit 2, and hand drying unit 3. One of the water supply unit 1, soap dispensing unit 2, and hand drying unit 3 has a built-in main control circuit board 4. The water supply unit 1 includes a water supply housing 11, a temperature regulating valve core 13, and a solenoid valve 14. The water supply unit 1 is also equipped with a cold water inlet channel 15, a hot water inlet channel 16, and a mixed water outlet channel 17. The temperature regulating valve core 13 and the solenoid valve 14 are both built into the water supply housing 11. The temperature regulating valve core 13 is used to adjust the water flow rate of the cold water inlet channel 15 and the hot water inlet channel 16. The solenoid valve 14 is used to open or close the mixed water outlet channel. The water flow path of channel 17; the soap dispensing unit 2 includes a soap liquid control box 21 and a soap liquid tank 22. The soap liquid control box 21 has a built-in soap liquid delivery pump 212, which is used to deliver the soap liquid in the soap liquid tank 22 to the faucet; the hand drying unit 3 includes a hand drying housing 31, which has a built-in fan 33, which supplies air to the faucet; the main control circuit board 4 is connected to the solenoid valve 14, the soap liquid delivery pump 212 and the fan 33 respectively through wires. The wires pass through the water supply housing 11, the soap liquid control box 21 or the hand drying housing 31, and all are connected by disconnectable terminal connection wires 5.

[0037] The water supply unit 1, soap dispensing unit 2, and hand dryer unit 3 are designed with independent structures, and the circuit connections between the units use disconnectable terminal connection wires 5, eliminating the rigid wiring method of traditional integrated control boxes. When any unit malfunctions, it is not necessary to disassemble the entire control box; simply disconnect the terminal connection wire 5 corresponding to the faulty unit to directly disassemble, repair, or replace the faulty unit individually.

[0038] After a failure occurs, the faulty unit can be repaired or replaced in a targeted manner, without the need to scrap the entire control box, thus reducing unnecessary waste of parts; the reusable disconnectable terminal connection wire 5 is highly reusable, and the circuit can be restored by reconnecting after repair, avoiding line damage caused by repeated cutting and rewiring of wires; in addition, the procurement and inventory management of spare parts for independent units are more targeted, further reducing the material and labor costs of later maintenance.

[0039] In use, a sensor probe is integrated into the faucet. The sensor probe communicates with the main control circuit board 4 through a wire. The sensor probe collects user signals in real time and converts them into electrical signals, which are then transmitted to the main control circuit board 4. The main control circuit board 4 identifies the signal type (such as dwell time, movement trajectory, etc.) through a preset algorithm, distinguishes different user intentions such as "water dispensing request", "soap dispensing request", and "hand drying request", and then transmits the control command through the terminal connection line 5 to the corresponding solenoid valve 14, soap liquid delivery pump 212 and fan 33, triggering each unit to perform the corresponding operation.

[0040] The water supply unit 1, soap dispensing unit 2, and hand dryer unit 3 are combined to form a cube or cuboid shape. The regular shape of the cube or cuboid, compared to irregular combination structures, can maximize the use of installation space and adapt to the spatial layout requirements of different scenarios such as bathrooms and kitchens.

[0041] The notch formed by one end of the soap dispenser control box 21 and the upper end of the soap dispenser tank 22 is used to house the water supply unit 1. The hand drying unit 3 is located on the other end of the soap dispenser control box 21 and the soap dispenser tank 22. The main control circuit board 4 is built into the soap dispenser control box 21. Since the water supply unit 1 requires a small volume of space, while the hand drying unit 3 requires a larger volume of space, the overall volume of the three-in-one control box is reduced as much as possible by reasonably arranging the positions of each unit to fully accommodate the volume differences of each unit.

[0042] The water supply unit 1 further includes a water control drive board 12, the main control circuit board 4 is connected to the water control drive board 12, and the water control drive board 12 is connected to the solenoid valve 14; the soap supply unit 2 further includes a soap control drive board 211, the main control circuit board 4 is connected to the soap control drive board 211, and the soap control drive board 211 is connected to the soap liquid delivery pump 212; the hand drying unit 3 further includes a fan control drive board 32, the main control circuit board 4 is connected to the fan control drive board 32, and the fan control drive board 32 is connected to the fan 33.

[0043] In the above embodiment, the drive board is the core electronic control component, used to receive commands and drive the actuators of each unit. This solution has the following beneficial effects: Firstly, the high-voltage drive circuits of each unit (such as the power supply circuits of solenoid valve 14 and fan 33) are integrated on the corresponding drive board, which is physically isolated from the low-voltage signal circuits of the main control circuit board 4. This avoids electromagnetic interference generated by the high-voltage circuits from affecting the signal transmission of the main control board. Compared with the scheme where the main control circuit board 4 is directly connected to the solenoid valve 14, soap delivery pump 212 and fan 33 through wires, the drive board avoids signal crosstalk problems caused by the centralized arrangement of wires.

[0044] Secondly, the independent drive boards can be installed close to the actuators of each unit, shortening the length of high-voltage wires, further reducing line loss and electromagnetic radiation, and improving the safety and reliability of circuit operation. Furthermore, each unit drive board independently undertakes the control function of its corresponding actuator. When a unit fails, only the drive board of that unit needs to be tested and replaced, without disassembling the main control circuit board 4 or components of other normal units. Thirdly, each independent drive board can integrate a dedicated overload protection module (such as overcurrent protection for water control drive board 12, stall protection for soap control drive board 211, and overheat protection for air control drive board 32). When the corresponding actuator experiences abnormal operating conditions (such as short circuit of solenoid valve 14 or stall of soap liquid delivery pump 212), the drive board can quickly cut off the power supply circuit to prevent the fault from spreading to the main control circuit board 4 or other units, effectively protecting the core electrical control components and extending the overall service life of the three-in-one control box.

[0045] Preferably, the main control circuit board 4 is built into the soap liquid control box 21. Combined with the compact layout design of each unit, the wire length between the main control circuit board 4 and the water control drive board 12, the soap control drive board 211, and the air control drive board 32 is significantly shortened. The main control circuit board 4 is built into the soap liquid control box 21. After the wires from the main control circuit board 4 pass through the side wall of the soap liquid control box 21, they extend along the left and right sides of the soap liquid control box 21 towards the water supply unit 1 and the hand drying unit 3, respectively. One side of the wire is connected to the water control drive board 12 of the water supply unit 1 through a disconnectable terminal connection wire 5, and the other side of the wire is connected to the air control drive board 32 of the hand drying unit 3 through a disconnectable terminal connection wire 5. This avoids the wires from crossing and tangling, making the circuit layout of the three-in-one control box clear and orderly, which is convenient for later wiring inspection and fault diagnosis.

[0046] The water supply unit 1, soap dispensing unit 2, and hand drying unit 3 are all independently powered. Example 1: The hand drying unit 3 is powered by mains electricity. The water supply unit 1 has a built-in first battery pack that powers it. The soap dispensing unit 2 has a built-in second battery pack 214 that powers it. The fan 33 of the hand drying unit 3 is a high-power component; mains electricity can meet its continuous and stable power needs. Each unit is independently powered, and their power supply systems are completely independent. When any unit experiences a power supply or functional failure, it is not necessary to disconnect the power supply lines of other units; only the battery pack of the faulty unit needs to be repaired. Example 2: The water supply unit 1, soap dispensing unit 2, and hand drying unit 3 can be powered by external power adapters and each connected to mains electricity.

[0047] The water supply unit 1, soap supply unit 2, and hand drying unit 3 are connected by a connector 6. Specifically, the connector 6 includes a bottom support plate 61 supporting the bottom of the soap supply unit 2 and the hand drying unit 3, a front limiting plate 62 and a rear baffle 63 located at the front and rear ends of the water supply unit 1, the soap supply unit 2, and the hand drying unit 3, a first side baffle 64 located at the side end of the hand drying unit 3, and a second side baffle 65 located at the side end of the water supply unit 1 or the soap supply unit 2. The water supply unit 1, the soap supply unit 2, and the hand drying unit 3 can be connected to the rear baffle 63 by screws or the like.

[0048] The front limiting plate 62, rear baffle 63, first side baffle 64 and second side baffle 65 enclose and form a limiting space that is adapted to the shape of the water supply unit 1, soap supply unit 2 and hand drying unit 3. The multi-directional enclosure constraint realizes the lateral and longitudinal limiting of each functional unit. At the same time, the rear ends of the water supply unit 1, soap supply unit 2 and hand drying unit 3 are detachably connected to the rear baffle 63 by screws, forming a double fixing structure to ensure the assembly stability of each unit.

[0049] Reference Figure 3 As shown, specifically, the water supply unit 1 also includes a temperature control knob 18. This knob 18 is located on the outer side of the water supply housing 11 and is connected to the temperature control valve core 13. It is used to adjust the ratio of water intake to water intake in the cold water inlet channel 15 and the hot water inlet channel 16, thereby achieving precise control of the outlet water temperature of the mixing water outlet channel 17. The cold water inlet channel 15, the hot water inlet channel 16, and the mixing water outlet channel 17 extend out of the water supply housing 11 and are connected to external pipelines.

[0050] Reference Figures 4 to 16 As shown, a soap dispensing unit 2 includes a soap liquid control box 21 and a soap dispensing assembly 23. The lower end of the soap liquid control box 21 is provided with a soap liquid tank 22. The soap dispensing assembly 23 includes a soap dispensing tube 231 and a tube cap 232. The lower end of the soap dispensing tube 231 is threaded to the soap liquid tank 22, and the upper end of the soap dispensing tube 231 passes through the soap liquid control box 21. The tube cap 232 is used to prevent foreign objects from falling into the soap liquid tank 22 along the open end of the soap dispensing tube 231. The soap liquid control box 21 is equipped with a soap liquid delivery pump 212. The inlet end of the soap liquid delivery pump 212 is connected to the soap liquid tank 22, and the outlet end of the soap liquid delivery pump 212 is connected to the soap liquid output terminal. Soap dispenser terminals include wall-mounted soap dispensers and water taps with soap dispensing functions.

[0051] The soap-adding tube 231 of this invention integrates two functions: it can be used to add soap solution and to connect the soap solution control box 21 and the soap solution tank 22. During daily addition, there is no need to disassemble core components such as the soap solution control box 21 and the soap solution tank 22. Simply unscrew the cap 232 at the top of the soap-adding tube 231 to add soap solution directly. The soap solution flows into the tank 221 along the inner cavity of the soap-adding tube 231, avoiding spillage and contamination. When it is necessary to repair components such as the soap solution delivery pump 212 and circuit board in the soap solution control box 21, the soap solution control box 21 can be pulled out along the axial direction of the soap-adding tube 231 without disconnecting other connecting structures. This allows for quick disassembly and reassembly of the soap solution control box 21 and the soap solution tank 22, simplifying the connection structure.

[0052] The soap-adding assembly 23 also includes a nut 233, which is located at the upper end of the soap liquid control box 21, and the soap-adding tube 231 is connected to the nut 233 by an external thread.

[0053] Specifically, the upper end of the soap-adding tube 231 is provided with an external thread for connection to the nut 233 and an internal thread for connection to the tube cap 232. The nut 233 is preferably a flat nut 233. Compared with the conventional hexagonal nut 233, the flat nut 233 has a smaller axial height and will not occupy additional vertical space when embedded in the upper end of the soap liquid control box 21, effectively adapting to the overall miniaturization design requirements of the three-in-one control box.

[0054] The soap adding tube 231 is threadedly engaged with the nut 233. During the tightening process, the nut 233 can directly press against the upper end face of the soap liquid control box 21, and the connection and fixation between the soap liquid control box 21 and the soap adding tube 231 are achieved by utilizing the self-locking property of the thread.

[0055] Example 1: Reference Figure 4 and Figure 6 As shown, the soap-adding assembly 23 includes a soap-adding tube 231, a tube cap 232, and a nut 233. The soap-adding tube 231 has threads on both its inner and outer sides. The nut 233 is threaded to the outer thread of the soap-adding tube 231, and the tube cap 232 is threaded to the inner thread of the tube cap 232.

[0056] When adding soap to the soap tank 22, the user does not need to disassemble the soap adding assembly 23 as a whole. They only need to unscrew the cap 232 to complete the adding operation. This eliminates the cumbersome steps of disassembling the fixing parts and separating the pipeline in the traditional structure, and greatly shortens the operation time of adding soap.

[0057] Based on the above embodiments, the tube cap 232 can also be integrally molded from rubber material. The outer diameter of the rubber tube cap 232 is slightly larger than the hole diameter of the soap adding tube 231. It is directly inserted into the open end of the soap adding tube 231 by interference fit. Compared with the threaded tube cap 232 structure, the connection between the rubber tube cap 232 and the soap adding tube 231 is more recommended.

[0058] Example 2: Reference Figures 7 to 9 As shown, the soap-adding assembly 23 disclosed in Embodiment 2 has the same main structure as that in Embodiment 1, including a soap-adding tube 231, a tube cap 232, and a nut 233. The soap-adding tube 231 has threads on both its inner and outer sides, and the nut 233 is threaded to the external thread of the soap-adding tube 231. The tube cap 232 is adapted to the internal thread of the soap-adding tube 231. The difference between Embodiment 2 and Embodiment 1 is that the tube cap 232 has a clearance hole at its center. The soap-adding assembly 23 also includes a piston 234, which passes through the clearance hole of the tube cap 232 and seals against the inner wall of the soap-adding tube 231.

[0059] When the soap delivery pump 212 fails, the piston 234 can be pressed down. The piston head of the piston 234 moves downward along the inner wall of the soap adding pipe 231. During the movement, the piston head compresses the space inside the soap adding pipe 231 and the soap tank 22, causing the air pressure inside the soap tank 22 to increase rapidly. The increased air pressure exerts a downward thrust on the soap in the soap tank 22, forcing the soap into the inlet of the soap delivery pump 212 and pushing it along the delivery pipeline to the soap output terminal, thus achieving emergency liquid discharge.

[0060] To achieve the function of continuously delivering soap by reciprocating the pull-pull and press piston 234, this solution makes targeted improvements to the structure of piston 234 by adding a waterproof and breathable valve 2341 that is breathable but not liquid-permeable.

[0061] Before pressing the piston 234, it is necessary to ensure that the cap 232 and the soaping tube 231 are in a tightly sealed state to prevent air pressure leakage.

[0062] Example 3: Reference Figures 10 to 13 As shown, the difference between Embodiment 3 and Embodiment 1 is that the arrangement position of the tube cap 232 is different, and the soap-adding assembly 23 also includes an extension tube 235 and a snap-fit ​​component 236. The snap-fit ​​component 236 is snapped into the sink, the lower end of the extension tube 235 is embedded in the soap-adding tube 231, the upper end of the extension tube 235 is connected to the snap-fit ​​component 236, and the tube cap 232 covers the open end of the snap-fit ​​component 236.

[0063] When it is necessary to replenish the soap tank 22, the user does not need to bend down under the sink to operate it. They only need to unscrew or open the tube cap 232 at the top of the snap-fit ​​component 236 at the sink countertop, and pour the soap directly into the snap-fit ​​component 236 through the opening. The soap can flow smoothly into the soap tank 22 through the connecting channel of the extension tube 235 and the soap filling tube 231. After filling, the tube cap 232 can be closed again at the opening end of the snap-fit ​​component 236 to complete the seal.

[0064] The soap-adding assembly 23 also includes a locking member 237, which is threadedly connected to the internal thread of the soap-adding tube 231, and the extension tube 235 is provided with an anti-detachment part extending to the lower end of the locking member 237.

[0065] The locking element 237 is threadedly connected to the internal thread of the soap-adding tube 231, and the anti-detachment part of the extension tube 235 extends to the lower end of the locking element 237, forming a mechanical limiting structure. When the locking element 237 is in the tightened state, the anti-detachment part is firmly pressed and limited by the locking element 237, and the extension tube 235 cannot be pulled out directly. This effectively avoids the problem of accidental detachment of the extension tube 235 from the soap-adding tube 231 due to accidental contact by personnel, external pulling force, or pipeline vibration during soap delivery.

[0066] The soap-adding component 23 also includes a threaded clip 238. The upper end of the clipping component 236 is clipped onto the countertop of the sink, and the lower end of the clipping component 236 passes under the countertop of the sink. The threaded clip 238 is threadedly connected to the lower end of the clipping component 236.

[0067] Through the above structure, the threaded clamp 238 and the snap-fit ​​component 236 will achieve rigid clamping and fixation with the basin during the threaded connection process, and restrict the displacement of the snap-fit ​​component 236.

[0068] The soap-adding assembly 23 also includes a cushioning pad 239, which is disposed between the basin and the threaded fastener 238 to provide a secure connection.

[0069] The soap liquid control box 21 of the present invention is provided with an air pump 213. The upper end of the soap liquid control box 21 is provided with a soap outlet port 215 and an air outlet port 216, and a mixing chamber (not shown in the figure) connecting the soap outlet port 215 and the air outlet port 216. The air outlet end of the air pump 213 is connected to the air outlet port 216, and the liquid outlet end of the soap liquid delivery pump 212 is connected to the soap outlet port 215.

[0070] During use, the high-speed airflow generated by the air pump 213 enters the mixing chamber through the air outlet 216, where it is thoroughly mixed and sheared with the soap solution delivered to the soap outlet 215 by the soap solution delivery pump 212, thus atomizing the soap solution into a fine foam. The foamy soap solution has a larger contact area with the user's hands and other clean surfaces, allowing for rapid penetration of stains and significantly improved cleaning efficiency compared to liquid soap. Furthermore, the foamy soap solution is easy to rinse and leaves no residue, avoiding the waste and stickiness caused by excessive use of liquid soap, thus optimizing the user experience.

[0071] The soap delivery pump 212 includes, but is not limited to, gear pumps or peristaltic pumps in the prior art for soap delivery.

[0072] In Embodiment 2, in order to ensure that the soap solution can stably enter the soap solution delivery pump 212 when the piston 234 is pressed down, the soap solution tank 22 has the following specific structure: Reference Figures 14 to 16 As shown, the soap dispenser 22 includes a body 221 and a sealing assembly 222. The body 221 is integrally formed from a hard, corrosion-resistant material. The top of the body 221 is sealed and connected to the lower end of the soap adding tube 231. An outlet pipe 2211 is integrally formed inside the body 221. The inlet end of the soap delivery pump 212 is connected to the outlet pipe 2211. The lower end of the outlet pipe 2211 forms a hollow part 2212. The hollow part 2212 is connected to the liquid storage space of the body 221, and the hollow part 2212 passes through the bottom of the body 221 and forms a soap discharge port 2213. The sealing assembly 222 is used to seal the soap discharge port 2213.

[0073] The outlet pipe 2211 and the housing 221 are integrally molded, eliminating the need for subsequent assembly and positioning. This fundamentally avoids problems such as misalignment, tilting, and bending of the outlet pipe 2211 in split designs, ensuring that the outlet pipe 2211 always remains in the preset vertical installation position. The stable pipeline configuration ensures a smooth suction path for the soap delivery pump 212, completely resolving faults such as poor soap flow, fluctuations in output volume, or even blockages caused by pipeline deformation, significantly improving the reliability and stability of the soap dispensing unit 2.

[0074] The hollowed-out portion 2212 at the lower end of the liquid outlet pipe 2211 is directly connected to the liquid storage space of the box body 221, and passes through the bottom of the box body 221 to form a soap liquid discharge port 2213. This allows the suction port of the liquid outlet pipe 2211 to extend to the lowest point of the box body 221, which can fully extract the soap liquid in the box body 221. This solves the problem of soap liquid residue caused by the inaccurate positioning of the split liquid outlet pipe 2211, which cannot reach the bottom of the box. At the same time, by opening the sealing component 222, the residual soap liquid in the box body 221 can be completely drained, which not only avoids the mixing and deterioration of different types of soap liquid, but also further reduces the soap liquid waste rate and improves resource utilization.

[0075] The housing 221 includes a bottom plate 2214, which has a slope extending downward toward the soap drain outlet 2213. By setting the slope, the soap liquid can be guided by gravity to naturally converge toward the soap drain outlet 2213, so that the liquid outlet pipe 2211 can fully draw the soap liquid in the housing 221.

[0076] The soap dispenser 22 also includes a cover 223, which is used to seal the upper opening of the body 221. The cover 223 has a positioning groove 2231 that communicates with the outlet pipe 2211. The inlet end of the soap dispenser pump 212 is inserted into the positioning groove 2231 to output soap. The positioning groove 2231 serves to guide and position the inlet end of the soap dispenser pump 212.

[0077] The sealing assembly 222 includes a sealing plug 2221 and a one-way valve 2222. The one-way valve 2222 is threadedly connected to the bottom of the outlet pipe 2211, and the sealing plug 2221 seals the soap drain port 2213. The one-way flow function of the one-way valve 2222 enables rapid discharge of soap liquid, preventing backflow of soap liquid in the outlet pipe 2211.

[0078] The sealing assembly 222 also includes a filter screen 2223, which is sleeved on the outer periphery of the one-way valve 2222. The filter screen 2223 pre-filters the soap solution entering the outlet pipe 2211, effectively intercepting impurities that may be mixed in the soap solution (such as solidified soap particles, external dust, etc.), preventing impurities from entering the one-way valve 2222 with the soap solution and causing valve core jamming and sealing failure. It also prevents impurities from clogging the pump body or pipeline of the soap solution delivery pump 212, reducing the probability of core component failure and extending the service life of the soap solution delivery pump 212 and the one-way valve 2222.

[0079] When the soap delivery pump 212 fails, in order to ensure that the soap can enter the inlet end of the soap delivery pump 212 stably and without backflow when the piston 234 is pressed down, the piston head of the piston 234 moves down along the inner wall of the soap adding pipe 231, compressing the internal space of the housing 221, causing the air pressure inside the housing 221 to rise rapidly. The soap will enter the outlet pipe 2211 through the perforated part 2212, and the backflow of the soap is prevented by the one-way valve 2222.

[0080] During the pressing of piston 234, the air pressure inside housing 221 will rise instantaneously, generating a radial pressure impact on the liquid outlet pipe 2211. If flexible pipes or assembled pipes with insufficient rigidity in the existing technology are used, pipe bulging, bending or even partial collapse may occur, resulting in changes in the cross-sectional area of ​​soap liquid flow, causing fluid turbulence and flow rate fluctuations, and thus leading to unstable liquid outlet.

[0081] Reference Figures 17 to 20 As shown, the hand drying unit 3 includes a hand drying shell 31. The bottom inner side of the hand drying shell 31 is provided with a wind control drive plate 32 and a heat sink 321 for dissipating heat from the wind control drive plate 32. The top of the hand drying shell 31 is connected to an air outlet pipe, which is connected to a faucet. A fan 33 and an air outlet 311 are arranged sequentially between the heat sink 321 and the air outlet pipe. An air inlet is provided on the side end of the hand drying shell 31.

[0082] When the hand drying unit 3 is started, the fan 33 operates to generate negative pressure airflow. External air enters the inner cavity of the housing through the air inlet at the side end of the hand drying housing 31. The airflow first flows over the surface of the heat sink 321, carrying away the heat transferred to the heat sink 321 by the wind control drive board 32. Then the heat-carrying airflow continues to flow towards the air outlet 311 and is finally discharged at high speed through the air outlet pipe, realizing the dual functions of hand drying air supply and circuit board heat dissipation.

[0083] Furthermore, the airflow follows an orderly path of "air inlet → heat sink 321 → fan 33 → air outlet 311 → air duct", forming a directional and stable air duct structure; the airflow temperature after being preheated by the heat sink 321 is more suitable, avoiding the discomfort caused by cold air blowing directly on the hands and optimizing the user's hand drying experience.

[0084] Fan 33 includes, but is not limited to, a brushless motor. Brushless motors have advantages such as smooth operation, low vibration amplitude, and low operating noise.

[0085] To further reduce the noise generated by the fan 33 during operation, a fan-shaped pressure cover 34 is provided between the fan 33 and the air outlet 311.

[0086] Specifically, the fan-shaped pressure cover 34 is fixedly installed in the air duct between the fan 33 and the air outlet 311. The fan-shaped pressure cover 34 is provided with a number of inclined air guide plates 341 arranged in a ring array. Each inclined air guide plate 341 is evenly distributed with the center of the fan-shaped pressure cover 34 as the center, and the inclination angle of the inclined air guide plate 341 is adapted to the flow direction of the airflow output by the fan 33. A guide channel is formed between adjacent inclined air guide plates 341.

[0087] The flow channel formed by the annular array of several inclined air guide plates 341 can divide the noise sound wave into multiple sub-sound waves that propagate along different paths. These sub-sound waves will generate a phase difference as they pass through the flow channel, and some sound waves will interfere and cancel each other when they propagate to the air outlet 311, thereby reducing the total amplitude of the noise; at the same time, the surface of the inclined air guide plates 341 can reflect and absorb some high-frequency noise, further hindering the outward propagation of noise.

[0088] The fan-shaped cover 34 has a first buffer pad 35 at one end near the fan 33, and the fan 33 has a second buffer pad 36 at the end away from the fan-shaped cover 34.

[0089] Specifically, the first buffer pad 35 is embedded in the bottom of the fan-shaped cover 34; the second buffer pad 36 is fitted onto the end of the fan-shaped cover 34 and abuts against the hand dryer housing 31. The first buffer pad 35, fitted onto the outer periphery of the end of the fan 33 and abutting against the inner wall of the hand dryer housing 31, can effectively block the radial vibration of the fan 33 from being transmitted to the hand dryer housing 31, preventing the housing from generating low-frequency rumbling noise due to resonance; the second buffer pad 36 is embedded in the bottom end face of the fan-shaped cover 34, forming a surface contact abutment with the end face of the fan 33, which can directly absorb the axial vibration generated by the fan 33 during operation, avoiding hard collisions between the fan 33 and the fan-shaped cover 34, and eliminating high-frequency abnormal noise caused by vibration impact. The double buffer structure reduces axial and radial vibrations respectively, effectively weakening the vibration transmission generated by the operation of the fan 33, and further reducing the overall noise of the machine.

[0090] A heating element 37 is provided between the fan-shaped pressure cover 34 and the air outlet 311. The heating element 37 is positioned between the fan-shaped pressure cover 34 and the air outlet 311. The stable airflow regulated by the fan-shaped pressure cover 34 can fully contact the heating element 37 to achieve uniform heating and avoid local overheating or uneven heating. After the warm air is output through the air outlet, it can quickly dry the moisture on the hands. Compared with drying hands with cold air, it greatly shortens the drying time and avoids the discomfort caused by direct cold air blowing. It is especially suitable for use in low-temperature environments.

[0091] The air outlet 311 has a constricted structure. The constricted air outlet 311 can greatly increase the flow velocity of the airflow in the narrow section. When passing through the constricted structure, the cross-section becomes smaller, the pressure decreases, and the flow velocity increases. The high-speed airflow can more quickly remove moisture from the user's hands.

[0092] The air inlet is equipped with a dustproof net 38, which can effectively intercept solid impurities such as dust, hair, and fibers in the outside air, preventing impurities from entering the hand drying unit 3 with the airflow, extending the service life of core components such as the fan 33, heating element 37, and fan blade-shaped cover 34, and reducing the failure rate.

[0093] Specifically, the hand-drying unit 3 includes a hand-drying housing 31, which includes a first outer shell 312 and a second outer shell 313 connected together, and a positioning shell 314 sandwiched between the first outer shell 312 and the second outer shell 313. The positioning shell 314 has an integrally formed hollow positioning cavity 3141 in its center. The fan 33 is adapted to be built into the positioning cavity 3141, and the inner wall of the positioning cavity 3141 is tightly fitted with the outer peripheral wall of the fan 33, achieving precise positioning and stable installation of the fan 33. The bottom of the positioning shell 314 has several evenly distributed air holes 3142 communicating with the positioning cavity 3141, arranged in a circular array on the bottom end face of the positioning shell 314. The bottom of the hand-drying housing 31... An air control drive plate 32 is fixedly installed on the inner side. A heat sink 321 for heat dissipation is attached to the surface of the air control drive plate 32. The heat sink 321 is correspondingly arranged at the lower end of the positioning shell 314. When the fan 33 operates and generates negative pressure airflow, the outside air enters the inner cavity of the shell through the air inlet at the side end of the hand dryer shell 31, flows down along the outer wall of the positioning shell 314 to the lower end of the positioning shell 314, flows over the surface of the heat sink 321 and carries away the heat transferred by the air control drive plate 32, and then enters the positioning cavity 3141 through the air hole 3142, driving the fan 33 to operate. The positioning shell 314 integrates the two functions of positioning and installing the fan 33 and guiding the airflow. This design greatly reduces the number of parts in the hand dryer shell 31, simplifies the assembly process, and reduces the production cost.

[0094] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A three-in-one control box, characterized in that: It includes independently arranged water supply unit (1), soap supply unit (2) and hand drying unit (3), one of which has a built-in main control circuit board (4); The water supply unit (1) includes a water supply housing (11), a temperature regulating valve core (13), and a solenoid valve (14); the water supply unit (1) is also equipped with a cold water inlet channel (15), a hot water inlet channel (16), and a mixed water outlet channel (17); the temperature regulating valve core (13) and the solenoid valve (14) are both built into the water supply housing (11); the temperature regulating valve core (13) is used to regulate the water flow rate of the cold water inlet channel (15) and the hot water inlet channel (16); the solenoid valve (14) is used to open or close the water flow path of the mixed water outlet channel (17); The soap dispensing unit (2) includes a soap liquid control box (21) and a soap liquid tank (22). The soap liquid control box (21) has a built-in soap liquid delivery pump (212), which is used to deliver the soap liquid in the soap liquid tank (22) to the faucet. The hand drying unit (3) includes a hand drying housing (31), in which a fan (33) is built-in, and the fan (33) supplies air to the faucet; The main control circuit board (4) is connected to the solenoid valve (14), soap liquid delivery pump (212) and fan (33) respectively by wires. The wires passing through the water supply housing (11), soap liquid control box (21) or hand dryer housing (31) are all connected by disconnectable terminal connection wires (5).

2. The three-in-one control box according to claim 1, characterized in that: The water supply unit (1) further includes a water control drive board (12), the main control circuit board (4) is connected to the water control drive board (12), and the water control drive board (12) is connected to the solenoid valve (14); the soap supply unit (2) further includes a soap control drive board (211), the main control circuit board (4) is connected to the soap control drive board (211), and the soap control drive board (211) is connected to the soap liquid delivery pump (212); the hand drying unit (3) further includes a wind control drive board (32), the main control circuit board (4) is connected to the wind control drive board (32), and the wind control drive board (32) is connected to the fan (33).

3. The three-in-one control box according to claim 1, characterized in that: The water supply unit (1), soap supply unit (2) and hand drying unit (3) are combined to form a cube or cuboid shape. The notch formed by one end of the soap liquid control box (21) and the upper end of the soap liquid tank (22) is used to place the water supply unit (1). The hand drying unit (3) is provided on the other end of the soap liquid control box (21) and the soap liquid tank (22). The main control circuit board (4) is built into the soap liquid control box (21).

4. The three-in-one control box according to claim 1, characterized in that: The water supply unit (1), soap supply unit (2) and hand dryer unit (3) are all powered independently.

5. A three-in-one control box according to claim 1, characterized in that: The water supply unit (1), soap supply unit (2) and hand dryer unit (3) are connected by connector (6).

6. A three-in-one control box according to claim 1, characterized in that: The soap dispensing unit (2) includes a soap liquid control box (21) and a soap adding component (23). The lower end of the soap liquid control box (21) is provided with a soap liquid tank (22). The soap adding component (23) includes a soap adding tube (231) and a tube cap (232). The lower end of the soap adding tube (231) is threaded to the soap liquid tank (22). The upper end of the soap adding tube (231) passes through the soap liquid control box (21). The tube cap (232) is used to prevent foreign objects from falling into the soap liquid tank (22) along the open end of the soap adding tube (231). The soap liquid control box (21) is equipped with a soap liquid delivery pump (212), the inlet end of the soap liquid delivery pump (212) is connected to the soap liquid tank (22), and the outlet end of the soap liquid delivery pump (212) is connected to the soap liquid output terminal.

7. A three-in-one control box according to claim 6, characterized in that: The soap dispenser (22) includes a body (221) and a sealing plug (2221). The body (221) is integrally formed with a liquid outlet pipe (2211). The lower end of the liquid outlet pipe (2211) forms a hollow part (2212). The hollow part (2212) is connected to the liquid storage space of the body (221), and the hollow part (2212) passes through the bottom of the body (221) and forms a soap discharge port (2213). The sealing plug assembly (222) is used to seal the soap discharge port (2213).

8. A three-in-one control box according to claim 7, characterized in that: The soap-adding assembly (23) also includes a nut (233), which is located at the upper end of the soap liquid control box (21), and the soap-adding tube (231) is connected to the external thread of the nut (233).

9. A three-in-one control box according to claim 7, characterized in that: The soap liquid control box (21) is equipped with an air pump (213). The upper end of the soap liquid control box (21) is provided with a soap outlet port (215) and an air outlet port (216), as well as a mixing chamber connecting the soap outlet port (215) and the air outlet port (216). The air outlet end of the air pump (213) is connected to the air outlet port (216), and the liquid outlet end of the soap liquid delivery pump (212) is connected to the soap outlet port (215).

10. A three-in-one control box according to claim 1, characterized in that: The hand dryer housing (31) is provided with an air outlet (311), and a fan-shaped pressure cover (34) is provided between the fan (33) and the air outlet (311). The fan-shaped pressure cover (34) is provided with several oblique air guide plates (341) arranged in a ring array.

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