Water outlet control device of faucet and faucet

Abstract

The present application relates to the technical field of faucet, in particular to a water outlet control device of faucet and faucet. The device comprises a water outlet device and a water outlet pipe, the water outlet end of the water outlet device is communicated with an adapter pipe coaxial with the water outlet pipe, the adapter pipe and the water outlet pipe are respectively sleeved with a tee pipe at the close end, and the two tee pipes are respectively rotatably connected with a pipe sleeve with a side wall opening; the close end of the adapter pipe and the water outlet pipe is respectively provided with a bubbling pipe and a pressure stabilizing pipe, the bubbling pipe is provided with a bubbling mechanism for mixing air and water, and the pressure stabilizing pipe is provided with a pressure stabilizing mechanism for stabilizing the instantaneous flow of water, the pressure stabilizing mechanism comprises an air bag; a gas pump is arranged beside the water outlet device, the gas outlet end of the gas pump is communicated with a reversing valve, and the two gas outlet ends of the reversing valve respectively extend into the bubbling pipe and the pressure stabilizing pipe and are respectively communicated with the input end of the bubbling mechanism and the pressure stabilizing mechanism. The device solves the problems of large influence of water pressure on bubble water outlet, incomplete mode switching isolation and large pressure loss of pressure stabilizing mode.

Description

Technical Field

[0001] This invention relates to the field of faucet technology, specifically to a faucet water outlet control device and a faucet. Background Technology

[0002] As residents' living standards improve, their demands for faucet water quality are becoming increasingly diverse. Besides traditional temperature and flow regulation, features such as aerated water and pressure-stabilized water flow are gaining attention. Currently, the conventional method for achieving aerated water from faucets is to install an aerator at the outlet. This relies on the negative pressure generated when water flows through the aerator to draw in outside air, creating a water-air mixture. However, this method is heavily dependent on water pressure. In high-rise buildings or during peak water usage periods when water pressure is low, insufficient water flow weakens the negative pressure, significantly reducing the amount of air drawn in. This results in a noticeable decrease or even complete loss of the aerated water effect. Furthermore, simply installing an aerator only outputs aerated water; it doesn't allow for flexible switching between aerated and regular water flow. To obtain regular water flow, the aerator must be removed, making operation extremely inconvenient.

[0003] To accommodate multiple water output functions, some existing faucets use built-in switching valves to switch between different water paths. However, these switching mechanisms typically only control one end of the pipe, leaving the other end of the idle pipe always connected to the outlet. This allows water from the working pipe to easily flow into the idle pipe under pressure, causing interference between the two water output modes and affecting the stability of the water output. Regarding water pressure fluctuations, existing solutions often use mechanical pressure regulators, which use a spring-driven valve core to change the throttling opening to limit the outlet pressure. However, pressure regulators essentially reduce pressure by consuming water flow energy, resulting in continuous pressure loss during normal water use, high maintenance costs, and the fact that they can only limit excessively high water pressure and cannot actively compensate for flow when water pressure drops momentarily. Their effectiveness in absorbing high-frequency, instantaneous pressure fluctuations such as water hammer is very limited.

[0004] It is evident that existing faucet water outlet control devices have significant shortcomings in terms of bubble water stability, multi-mode switching isolation, and adaptability to water pressure fluctuations. Therefore, we need to design a new water outlet control scheme that can solve the above problems simultaneously, so as to improve the water outlet experience and operational reliability of faucets under complex water supply conditions. Summary of the Invention

[0005] Therefore, it is necessary to provide a water outlet control device and a faucet to address the existing technical problems.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows: A water outlet control device for a faucet includes a water outlet device and a water outlet pipe connected to the faucet inlet, and further includes: The outlet end of the water outlet device is connected to a transfer pipe that is coaxially arranged with the outlet pipe. A three-way pipe is fitted at the end of the transfer pipe that is close to the outlet pipe. The two three-way pipes are respectively rotatably connected to the inside of the pipe sleeve. The side wall of the pipe sleeve is provided with a water hole for water to pass through. After the pipe sleeve is rotated, it drives the water hole to align with one of the water outlets of the three-way pipe. A bubbler and a pressure stabilizing pipe are symmetrically arranged at the ends of the adapter pipe and the outlet pipe, respectively. The two ends of the bubbler and the pressure stabilizing pipe are connected to the water inlets of two T-pipes. An aeration mechanism for mixing air and water is arranged inside the bubbler pipe on the side near the outlet pipe. A pressure stabilizing mechanism for stabilizing the instantaneous flow rate of water is arranged inside the pressure stabilizing pipe on the side near the outlet pipe. The pressure stabilizing mechanism includes an air bladder arranged inside the pressure stabilizing pipe. An air pump is installed on the side of the water outlet device. The air outlet of the air pump is connected to a reversing valve. The two air outlets of the reversing valve extend into the interior of the aerator and the pressure stabilizing pipe, respectively, and are connected to the input end of the aerator and the input end of the pressure stabilizing mechanism, respectively.

[0007] Furthermore, a rotating shaft is fixedly connected to one end of each of the two sleeves that are close to each other. A reducer is driven coaxially on the rotating shaft, and a motor with its output end connected to the reducer is installed on the side of the reducer.

[0008] Furthermore, the bubbling mechanism also includes an annular air hood coaxially arranged inside the bubble tube, and an air cavity is opened inside the annular air hood. One outlet of the reversing valve is fixedly connected to a first air pipe. One end of the first air pipe is connected to the reversing valve, and the other end is connected to the air chamber inside the annular air hood.

[0009] Furthermore, a baffle is coaxially fixed inside the annular air hood, and one-way air valves are arranged in an equidistant array along the circumference of the baffle. The air inlet of the one-way air valve faces the side where the first air pipe is connected to the annular air hood.

[0010] Furthermore, the foaming mechanism also includes a sleeve that is coaxially fixed to the inner wall of the annular air hood. A screen plate is coaxially fixed to one end of the sleeve near the water inlet of the foaming tube. The screen plate has honeycomb holes arranged in a circumferential array. The sleeve has air inlets arranged at equal angles along the circumference, and the air inlets are connected to the air outlet of the one-way valve.

[0011] Furthermore, the foaming mechanism also includes a mixing disc fixedly connected to the sleeve on the same axis. The mixing disc is located at the end of the sleeve away from the sieve plate, and a refining disc is fixedly connected to the end of the mixing disc away from the sleeve on the same axis. A mixing cavity is formed on the side of the mixing disk that is close to the sleeve, and a refining cavity is formed on the side of the mixing disk that is close to the refining disk. The sidewall of the mixing disk is provided with flow channels that connect the mixing cavity and the refining cavity at equal intervals along the circumferential direction. The refining disk is provided with refining holes arranged at equal angles along the circumferential direction.

[0012] Furthermore, the pressure stabilizing mechanism also includes a bushing arranged coaxially with the pressure stabilizing pipe. Both ends of the bushing are respectively fixedly connected to the bushing on the same axis. The bushings are arranged at equal angles along the circumferential direction with clearance holes for water to pass through. The outer walls of the two bushings are respectively fixedly connected to the inner wall of the pressure stabilizing pipe. The airbag is fitted on the outside of the bushing. A second air pipe is provided on the side of the pressure stabilizing pipe near the reversing valve. One end of the second air pipe is connected to the airbag, and the other end is connected to the other output end of the reversing valve.

[0013] Furthermore, the airbag is ring-shaped with its two ends abutting against the sides of the two liner panels.

[0014] Furthermore, the bushing has two air passages symmetrically opened along the axial direction. One end of one air passage is connected to the air inlet of the airbag, and the other end is connected to the second air tube. One end of the other airway is connected to the exhaust end of the airbag, and the other end is connected to a vent valve.

[0015] A faucet, including the water outlet control device of the faucet described above.

[0016] The beneficial effects of this invention compared to the prior art are: Firstly, this device uses a bubbler and a pressure stabilizing pipe connected in parallel between the transfer pipe and the outlet pipe. It utilizes the synchronously rotating sleeves inside two T-joints to allow selective conduction of the two pipes and simultaneous sealing of both ends. This ensures that both ends of the working pipe are connected to the water flow channel, while the ends of the idle pipe are completely sealed by the non-porous sidewalls of the sleeves. This fundamentally prevents the working water flow from flowing into the idle pipe, ensuring complete isolation between the two water output modes. At the same time, the bubbler mechanism inside the bubbler is actively supplied with air by an independent air pump through a reversing valve, no longer relying on the negative pressure generated by the water flow itself to draw in air. Therefore, even under low water pressure conditions, it can still stably mix sufficient air into the water flow and form fine bubbles for water output. This completely eliminates the dependence of traditional aerators on water supply pressure and significantly improves the stability and reliability of bubble output in low water pressure environments. Secondly, this device uses an airbag-type pressure stabilizing mechanism inside the pressure stabilizing pipe to replace the traditional mechanical pressure stabilizing valve. It utilizes the compressibility of the gas inside the airbag to passively absorb and compensate for instantaneous water pressure fluctuations. When the water pressure rises instantaneously, the water flow compresses the airbag, thereby absorbing the pressure peak. When the water pressure drops instantaneously, the airbag expands due to the internal gas pressure, thereby pushing the surrounding water to compensate for the insufficient flow. Therefore, the instantaneous flow rate of the water output from the pressure stabilizing pipe remains stable, prioritizing the user's water demand. In addition, the airbag can absorb high-pressure impacts and compensate for low-pressure drops, providing excellent buffering effects for high-frequency instantaneous pressure fluctuations such as water hammer, effectively improving the water output stability and operational reliability of the faucet under complex operating conditions. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment; Figure 2 This is a front view of an embodiment; Figure 3 This is a half-sectional view of the planar structure of the bubbling tube and the voltage stabilizing tube in the embodiment; Figure 4 This is a three-dimensional half-sectional view of the bubbling tube and the voltage stabilizing tube in the embodiment; Figure 5 yes Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 yes Figure 4 Enlarged view of the structure at point B in the middle; Figure 7 yes Figure 4 Enlarged view of the structure at point C.

[0018] The numbers on the map are: 1. Water outlet device; 2. Transfer pipe; 3. Water outlet pipe; 4. Air bladder; 5. Pipe sleeve; 6. Water hole; 7. Rotating shaft; 8. Reducer; 9. Aerator tube; 10. Pressure stabilizing tube; 11. T-connector; 12. Air pump; 13. Reversing valve; 14. Aerator; 15. First air pipe; 16. Annular air hood; 17. Baffle; 18. One-way air valve; 19. Sleeve; 20. Air inlet; 21. Filter plate; 22. Mixing plate; 23. Flow channel; 24. Refining plate; 25. Pressure stabilizing mechanism; 26. Second air pipe; 27. Liner; 28. Liner plate; 29. ​​Clearance hole; 30. Air passage; 31. Vent valve. Detailed Implementation

[0019] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0020] refer to Figures 1 to 7 A water outlet control device for a faucet includes a water outlet device 1 and a water outlet pipe 3 connected to the water inlet of the faucet, and further includes: The outlet end of the water outlet device 1 is connected to a transfer pipe 2 that is coaxially arranged with the outlet pipe 3. The ends of the transfer pipe 2 and the outlet pipe 3 that are close to each other are respectively fitted with a three-way pipe 11. The inside of the two three-way pipes 11 is rotatably connected with a pipe sleeve 5. The side wall of the pipe sleeve 5 is provided with a water hole 6 for water to pass through. After the pipe sleeve 5 is rotated, it drives the water hole 6 to align with one of the water outlets of the three-way pipe 11. A bubbler 9 and a pressure stabilizing pipe 10 are symmetrically arranged at the ends of the adapter pipe 2 and the outlet pipe 3 respectively. The two ends of the bubbler 9 and the pressure stabilizing pipe 10 are connected to the water outlets of two three-way pipes 11 respectively. An aeration mechanism 14 for mixing air and water is arranged inside the bubbler 9 on the side near the outlet pipe 3. A pressure stabilizing mechanism 25 for stabilizing the instantaneous flow rate of water is arranged inside the pressure stabilizing pipe 10 on the side near the outlet pipe 3. The pressure stabilizing mechanism 25 includes an air bladder 4 arranged inside the pressure stabilizing pipe 10. An air pump 12 is installed on the side of the water outlet device 1. The air outlet of the air pump 12 is connected to a reversing valve 13. The two air outlets of the reversing valve 13 extend into the interior of the aerating tube 9 and the pressure stabilizing tube 10, respectively, and are connected to the input end of the aerating mechanism 14 and the input end of the pressure stabilizing mechanism 25, respectively.

[0021] When this device is in operation, the water flow control device first enters the water outlet device 1, and then is conveyed forward through the adapter pipe 2 connected to the water outlet end of the water outlet device 1. Since the adapter pipe 2 and the water outlet pipe 3 are coaxially arranged and their adjacent ends are respectively fitted with T-shaped pipes 11, the water needs to enter the subsequent pipeline through the water hole 6 on the side wall of the sleeve 5 after reaching the T-shaped pipe 11 at the end of the adapter pipe 2. The sleeve 5 can rotate inside the T-shaped pipe 11, thereby driving the water hole 6 to align with one of the water outlets of the T-shaped pipe 11. Because the sleeves 5 inside the two T-shaped pipes 11 rotate synchronously, only one of the aerator pipe 9 and the pressure stabilizing pipe 10 has both ends connected to the water hole 6 at the same time, while the two ends of the other pipe are blocked by the non-perforated side wall of the sleeve 5, thereby realizing selective conduction and complete isolation of the two parallel branches.

[0022] When the sleeve 5 is rotated until the water holes 6 are aligned with both ends of the aerator tube 9, water enters the aerator tube 9 through the tee pipe 11 at the end of the adapter 2 and flows along the aerator tube 9 to the tee pipe 11 on the side of the outlet tube 3. At this time, the air pump 12 located next to the outlet device 1 starts, and compressed air is delivered to the input end of the aerator mechanism 14 inside the aerator tube 9 after being switched by the reversing valve 13. This allows the air and water to mix thoroughly in the aerator mechanism 14, forming an air-water mixture containing a large number of fine bubbles. Since the aerator mechanism 14 is located inside the aerator tube 9 near the outlet tube 3, after the air and water are mixed, they immediately flow into the outlet tube 3 through the tee pipe 11 on the side of the outlet tube 3, and then a soft aerated water is sprayed out from the faucet, effectively reducing water splashing and improving the washing experience.

[0023] When the sleeve 5 is rotated until the water holes 6 are aligned with both ends of the pressure stabilizing pipe 10, the aerator 9 is completely blocked and isolated, and the water flows through the pressure stabilizing pipe 10 instead. At this time, the reversing valve 13 simultaneously switches the air path, and the compressed air output by the air pump 12 is delivered to the input end of the pressure stabilizing mechanism 25 inside the pressure stabilizing pipe 10, thereby inflating the air bladder 4 in the pressure stabilizing mechanism 25 with gas, so that the air bladder 4 maintains a predetermined expansion shape. When the water pressure rises instantaneously, the water flow squeezes the air bladder 4 to compress it, thereby absorbing the pressure peak; when the water pressure drops instantaneously, the air bladder 4 expands by the internal gas pressure, thereby pushing the surrounding water to compensate for the insufficient flow. Therefore, the instantaneous flow of water flowing through the pressure stabilizing pipe 10 is stabilized, and finally, a uniform and stable flow of water is output from the faucet through the outlet pipe 3 to ensure the user's water needs. Thus, through the coordinated linkage of the rotation of the sleeve 5 and the air path switching of the reversing valve 13, the device achieves controllable switching between two functional modes of bubble water output and pressure-stabilized water output in the same device, thereby taking into account the water output needs under different water use scenarios.

[0024] In order to drive the pipe sleeve 5 to rotate, so as to facilitate the switching of the water circuit between the aerator pipe 9 and the pressure stabilizing pipe 10, the following features are specifically provided: like Figure 3 As shown, two sleeves 5 are respectively fixed to a rotating shaft 7 at their close ends. A reducer 8 is coaxially driven by the rotating shaft 7. A motor with its output end connected to the reducer 8 is located next to the reducer 8. The start, stop, and forward / reverse rotation of the motor are controlled by the control system according to the user's mode selection command. When the user selects the bubble water output mode, the motor drives the sleeve 5 to rotate until the water hole 6 is aligned with the two ends of the aerator tube 9; when the user selects the pressure-stabilized water output mode, the motor drives the sleeve 5 to rotate in the reverse direction until the water hole 6 is aligned with the two ends of the pressure-stabilizing tube 10.

[0025] To facilitate the uniform flow of gas from the reversing valve 13 into the bubbling mechanism 14, the following features are specifically provided: like Figure 3 , Figure 4 and Figure 7 As shown, the foaming mechanism 14 also includes an annular air hood 16 coaxially disposed inside the bubble tube, and an air cavity is opened inside the annular air hood 16. One outlet of the reversing valve 13 is fixedly connected to a first air pipe 15. One end of the first air pipe 15 is connected to the reversing valve 13, and the other end is connected to the air chamber inside the annular air cover 16.

[0026] When the reversing valve 13 switches to the bubbling mode, the compressed air output by the air pump 12 is delivered to the air chamber of the annular air cover 16 through the first air pipe 15. Since the air chamber is annular and extends uniformly along the circumference, the gas can be evenly distributed along the circumference within the air chamber, avoiding the problem of uneven gas-water mixing caused by gas concentrating in a single location entering the water flow. Multiple air outlets are evenly distributed along the circumference on the inner wall of the annular air cover 16. These outlets connect the air chamber to the water flow channel inside the annular air cover 16, allowing the gas in the air chamber to be evenly released into the water flow through multiple outlets. This achieves uniform mixing of air and water across the entire circumferential cross-section, significantly improving the uniformity and stability of bubble generation. The annular air cover 16 is preferably made of corrosion-resistant engineering plastic or stainless steel to ensure that it will not rust or age and deform under long-term use in a humid water environment.

[0027] To prevent water from flowing back into the first air tube 15, the following features are specifically designed: like Figure 7 As shown, a baffle 17 is coaxially fixed inside the annular air hood 16. One-way air valves 18 are arranged in an equal-angle array along the circumference of the baffle 17. The air inlet end of the one-way air valve 18 faces the side where the first air pipe 15 is connected to the annular air hood 16.

[0028] The one-way air valve 18 is configured to allow gas to flow only from the air inlet chamber to the water outlet chamber, while preventing water from flowing back into the air inlet chamber from the water outlet chamber. Specifically, when the air pump 12 delivers compressed air to the air inlet chamber, the gas pressure in the air inlet chamber increases, overcoming the opening pressure of the one-way air valve 18 and opening the valve disc. The gas then flows into the water outlet chamber through the one-way air valve 18 and is further released into the water flow. When the air pump 12 stops supplying air or the pressure in the air inlet chamber is lower than the pressure in the water outlet chamber, the one-way air valve 18 automatically closes under the action of the water pressure on the water outlet chamber side, thereby effectively preventing water from flowing back into the first air pipe 15.

[0029] The one-way air valve 18 is preferably a silicone diaphragm type one-way air valve 18 or a spring-loaded one-way air valve 18. Multiple one-way air valves 18 arranged in an array on the baffle 17 are distributed at equal angles along the circumference, so that gas can enter the water flow from multiple positions at the same time, further ensuring the uniformity of gas-water mixing. At the same time, even if individual one-way air valves 18 fail, the remaining one-way air valves 18 can still work normally, improving the operational reliability of the device.

[0030] To facilitate the mixing of gas and water, the following features are specifically designed: like Figure 3 , Figure 4 and Figure 7As shown, the foaming mechanism 14 also includes a sleeve 19 coaxially fixed to the inner wall of the annular air cover 16. A screen plate 21 is coaxially fixed to one end of the sleeve 19 near the water inlet of the foaming pipe 9. The screen plate 21 has honeycomb holes arranged in a circumferential array. The sleeve 19 has air inlets 20 arranged at equal angles along the circumference, and the air inlets 20 are connected to the air outlet of the one-way valve 18.

[0031] The honeycomb holes are arranged through the sieve plate 21, ensuring that the water flowing in from the inlet of the aerator tube 9 must pass through the honeycomb holes before entering the central channel inside the sleeve 19. The honeycomb holes have small diameters and are numerous, dividing the water flow into multiple fine streams, resulting in a more uniform flow velocity distribution. Simultaneously, the honeycomb holes can also perform preliminary filtration of large particles in the water flow, preventing impurities from clogging subsequent aerator components. The sleeve 19 has multiple air inlets 20 arranged at equal angles along its circumference. These air inlets 20 penetrate the side wall of the sleeve 19, and their positions correspond one-to-one with the outlet of the aforementioned one-way air valve 18. One end of each air inlet 20 connects to the outlet of the one-way air valve 18, and the other end connects to the central channel inside the sleeve 19. When the compressed air output by the air pump 12 passes through the one-way air valve 18, it is simultaneously injected into the water flow in the central channel from multiple positions on the side wall of the sleeve 19 through the air inlet 20. Since the air inlet 20 is distributed in an equidistant array along the circumference, the air can be evenly injected into the water flow across the entire circumferential cross-section, avoiding the uneven phenomenon of excessive local bubbles and insufficient bubbles in other areas caused by concentrated gas injection. At the same time, the water flow homogenized by the honeycomb holes of the sieve plate 21 and the air evenly injected from all sides fully converge and mix in the central channel inside the sleeve 19, laying a good foundation for the subsequent generation of fine and uniform bubble water flow.

[0032] To further refine the water body after the gas-gas mixture, the following features were specifically designed: like Figure 3 , Figure 4 and Figure 7 As shown, the foaming mechanism 14 also includes a mixing disc 22 coaxially fixed to the sleeve 19. The mixing disc 22 is located at the end of the sleeve 19 away from the sieve disc 21, and a refining disc 24 is coaxially fixed to the end of the mixing disc 22 away from the sleeve 19. A mixing cavity is formed on the side of the mixing disk 22 that is close to the sleeve 19, and a refining cavity is formed on the side of the mixing disk 22 that is close to the refining disk 24. The sidewall of the mixing disk 22 is provided with flow channels 23 that connect the mixing cavity and the refining cavity at equal intervals along the circumferential direction, and the refining disk 24 is provided with refining holes arranged at equal angles along the circumferential direction.

[0033] The flow channel 23 extends radially along the mixing disk 22 and connects the mixing chamber and the refining chamber. When the air-water mixture in the mixing chamber flows into the refining chamber through the flow channel 23, the flow velocity increases due to the small cross-sectional area of ​​the flow channel 23, thus forming a high-speed jet in the refining chamber. The high-speed jets collide with each other and with the inner wall of the refining chamber, further breaking large bubbles in the mixture into microbubbles. The refining disk 24 has multiple refining holes arranged at equal angles along the circumference. The refining holes penetrate the refining disk 24, and the air-water mixture in the refining chamber, after being refined, finally flows out of the bubble-generating mechanism 14 through the refining holes. The refining holes have small diameters and are numerous. When the fluid passes through the refining holes, the remaining large bubbles are further broken into finer microbubbles by the shearing action of the refining holes, thus ultimately outputting a gentle bubble water flow containing a large number of fine bubbles.

[0034] A sealing gasket can be installed between the mixing disc 22 and the refining disc 24 to prevent leakage of the mixed fluid from the gap between them, ensuring that all fluids are refined through the flow channel 23 and the refining orifice. Through the mixing in the mixing chamber, the accelerated impact of the flow channel 23, and the shearing and breaking in the refining orifice, the bubble size in the output bubble water flow is made smaller and more uniform, the water flow feels softer, and water splashing is effectively reduced.

[0035] To supplement the detailed structure of the voltage stabilizing mechanism 25, the following features are also provided: like Figure 3 , Figure 4 and Figure 6 As shown, the pressure stabilizing mechanism 25 also includes a bushing 27 coaxially arranged with the pressure stabilizing pipe 10. The two ends of the bushing 27 are respectively coaxially fixed with lining plates 28. The lining plates 28 are arranged at equal angles along the circumferential direction with clearance holes 29 for water to pass through. The outer walls of the two lining plates 28 are respectively fixed to the inner wall of the pressure stabilizing pipe 10. The airbag 4 is fitted on the outside of the bushing 27. The pressure stabilizing pipe 10 is provided with a second air pipe 26 on the side near the reversing valve 13. One end of the second air pipe 26 is connected to the airbag 4, and the other end is connected to the other output end of the reversing valve 13.

[0036] The inner wall of the airbag 4 fits against the outer wall of the bushing 27, and the outer wall of the airbag 4 faces the inner wall of the pressure stabilizing pipe 10. Water flows through the annular water passage between the outer wall of the airbag 4 and the inner wall of the pressure stabilizing pipe 10. A second air pipe 26 is provided on the side of the pressure stabilizing pipe 10 near the reversing valve 13. One end of the second air pipe 26 passes through the pipe wall of the pressure stabilizing pipe 10 and communicates with the interior of the airbag 4, while the other end is sealed and connected to the other output end of the reversing valve 13. A seal is provided between the second air pipe 26 and the pipe wall of the pressure stabilizing pipe 10 to prevent leakage. When the reversing valve 13 switches to the pressure stabilization mode, the compressed air output by the air pump 12 is delivered to the inside of the airbag 4 through the second air pipe 26, causing the airbag 4 to inflate. Since the inner wall of the airbag 4 is attached to the bushing 27 and cannot expand inward, the airbag 4 can only expand outward, thereby reducing the cross-sectional area of ​​the annular water passage between the outer wall of the airbag 4 and the inner wall of the pressure stabilizing pipe 10. At the same time, the gas inside the airbag 4 forms a compressible buffer cushion to absorb and compensate for instantaneous pressure fluctuations in the water flow.

[0037] During the above process, the airbag 4 inflates to a predetermined pressure and maintains a stable shape during steady-state operation. The annular cross-sectional area formed between its outer wall and the inner wall of the pressure-stabilizing pipe 10 meets the design flow rate requirements of the faucet, thus not restricting the steady-state flow rate. When the water pressure rises instantaneously, the airbag 4 is compressed, increasing the cross-sectional area and absorbing the pressure peak. When the water pressure drops instantaneously, the airbag 4 expands and pushes against the surrounding water, releasing elastic potential energy to compensate for insufficient flow. Thus, the airbag 4 achieves buffering of instantaneous pressure fluctuations through dynamic deformation, rather than continuously restricting the flow rate through a fixed throttling method.

[0038] The bushing 27 and the liner 28 are preferably made of rigid engineering plastic or stainless steel to ensure that they do not deform under water pressure and to ensure the stability of the airbag 4 installation position.

[0039] In order to ensure that the airbag 4 can be stably installed on the outside of the bushing 27, the following features are also provided: like Figure 6 As shown, the airbag 4 is ring-shaped and its two ends abut against the sides of the two liner 28 that are close to each other.

[0040] The airbag 4 is made of flexible elastic material, preferably food-grade silicone or EPDM rubber, which has good elasticity, aging resistance and water pressure resistance, and can maintain stable elastic recovery ability during long-term inflation and deflation cycles.

[0041] When compressed air fills the airbag 4, the inner wall of the airbag 4 cannot expand inward because it is supported by the bushing 27, and its two ends are limited by the bushings 28 and cannot extend axially. Therefore, the airbag 4 can only expand radially outward, reducing the cross-sectional area of ​​the annular water passage between the outer wall of the airbag 4 and the inner wall of the pressure stabilizing pipe 10. When the water pressure rises instantaneously, the water flow squeezes the outer wall of the airbag 4 from the outside, overcoming the internal gas pressure and compressing the airbag 4, thereby absorbing the pressure peak. When the water pressure drops instantaneously, the internal gas pressure of the airbag 4 pushes the airbag 4 outward, pushing the surrounding water to compensate for the insufficient flow. The axial limitation of the two ends of the airbag 4 by the bushings 28 ensures that the deformation of the airbag 4 always proceeds in the radial direction, avoiding the problem of uneven water passage or reduced pressure stabilizing performance caused by axial displacement of the airbag 4.

[0042] To facilitate the deflation of the gas inside airbag 4, the following features are specifically designed: like Figure 6 As shown, the bushing 27 has two air passages 30 symmetrically opened along the axial direction. One end of one air passage 30 is connected to the air inlet of the airbag 4, and the other end is connected to the second air tube 26. One end of another airway 30 is connected to the exhaust end of the airbag 4, and the other end is connected to a vent valve 31.

[0043] The vent valve 31 is configured to open when it is necessary to vent the airbag 4, so that the compressed air inside the airbag 4 is discharged to the outside atmosphere through the exhaust passage 30 and the vent valve 31, thereby depressurizing and resetting the airbag 4.

[0044] The vent valve 31 is an electromagnetic vent valve, controlled by the control system according to mode switching commands: when the device switches from pressure stabilization mode to bubble mode, the control system issues a command to open the vent valve 31, the gas inside the airbag 4 is quickly discharged, and the airbag 4 contracts and resets under its own elasticity, no longer throttling or buffering the water flow channel; when the device switches back to pressure stabilization mode, the vent valve 31 closes, and the air pump 12 re-inflates the airbag 4 through the second air pipe 26 and air passage 30. At the same time, the vent valve 31 can also automatically open to release pressure when the internal pressure of the airbag 4 exceeds a preset safety threshold, to prevent the airbag 4 from rupturing due to over-inflation, thus playing an overpressure protection role.

[0045] Two air passages 30 are symmetrically arranged along the axis of the bushing 27, so that the air intake and exhaust of the airbag 4 are located on opposite sides of the bushing 27, avoiding mutual interference between the air intake and exhaust flows. The symmetrical arrangement also helps the airbag 4 maintain uniform force during inflation and deflation, preventing uneven wear or deformation due to unilateral force. By setting two independent air passages 30 and coordinating the controllable opening of the deflation valve 31, independent control of the airbag 4's inflation and deflation is achieved, allowing the airbag 4 to quickly switch states according to the needs of the working mode, significantly improving the response speed and operational reliability of the pressure stabilizing mechanism 25.

[0046] A faucet, including the water outlet control device of the faucet described above.

[0047] The detailed working principle of this device is as follows: When the user needs to use the bubble water function, the control system drives the motor to operate. The motor drives the two rotating shafts 7 to rotate synchronously through the reducer 8, which in turn causes the sleeves 5 inside the two three-way pipes 11 to rotate synchronously until the water holes 6 are aligned with the two ends of the aerator tube 9. At this time, the two ends of the aerator tube 9 are connected to the water flow channels of the two three-way pipes 11, while the two ends of the pressure stabilizing pipe 10 are completely blocked by the non-porous sidewalls of the sleeves 5. The water from the water outlet device 1 first enters the transfer pipe 2, and then flows into the aerator tube 9 through the water holes 6 of the sleeves 5 inside the three-way pipe 11 at the end of the transfer pipe 2. At this time, the water flow is first evenly divided into multiple fine streams through the honeycomb holes on the screen plate 21, and then enters the central channel inside the sleeve 19. At the same time, the air pump 12 starts, the reversing valve 13 switches to the foaming air path, and the compressed air is delivered to the air chamber of the annular air cover 16 through the first air pipe 15. After the gas is evenly distributed in the annular air chamber along the circumference, it is injected into the water flow in the central channel from multiple positions through the one-way air valves 18 arrayed on the baffle 17 and the air inlet holes 20 on the side wall of the sleeve 19. The air and water flow are initially mixed in the sleeve 19 and then enter the mixing chamber for further mixing. Then, they are accelerated into the refining chamber through the flow channel 23 on the side wall of the mixing plate 22. The high-speed air-water mixed flow collides with each other in the refining chamber, causing the large bubbles to break. Finally, after being sheared and refined by the refining holes on the refining plate 24, a soft bubble water flow containing a large number of fine bubbles is formed. It flows into the water outlet pipe 3 through the three-way pipe 11 on one side of the water outlet pipe 3 and is sprayed out from the faucet.

[0048] When the user needs to use the pressure-stabilized water output function, the motor drives the sleeve 5 to rotate synchronously in the reverse direction, so that the water holes 6 are aligned with both ends of the pressure-stabilizing tube 10, the aerator tube 9 is completely blocked and isolated, and the water flows through the pressure-stabilizing tube 10 instead. At this time, the reversing valve 13 switches to the pressure-stabilizing air circuit synchronously, and the compressed air output by the air pump 12 is delivered to the airbag 4 through the second air pipe 26 and the air inlet 30 in the bushing 27, so that the airbag 4 is inflated and forms a compressible buffer air cushion in the pressure-stabilizing tube 10. Water flows through the clearance holes 29 on the liner 28 into the annular water passage between the outer wall of the airbag 4 and the inner wall of the pressure stabilizing pipe 10. When the water pressure momentarily increases, the water flow compresses the airbag 4 from the outside, and the gas inside the airbag 4 is compressed to absorb the pressure peak. When the water pressure momentarily drops, the gas pressure inside the airbag 4 pushes the airbag 4 to expand, pushing the surrounding water to compensate for the insufficient flow. Therefore, the instantaneous flow rate of the water flowing through the pressure stabilizing pipe 10 remains stable, and the final output is a stable water flow with uniform flow. When switching from the pressure stabilizing mode back to the bubble mode, the vent valve 31 opens, and the gas inside the airbag 4 is discharged to the atmosphere through the exhaust port 30 and the vent valve 31, and the airbag 4 is depressurized and reset.

[0049] The reason for not directly installing a pressure regulating valve in the pressure regulating pipe 10 for pressure regulation is that the pressure regulating valve essentially limits the outlet water pressure by changing the throttling opening through a spring-driven valve core. This is an active energy-consuming pressure reduction method, which also causes continuous pressure loss during normal water use, leading to a decrease in outlet water flow. In addition, the pressure regulating valve can only throttle excessively high water pressure and cannot actively compensate for flow when the water pressure drops instantaneously. Its absorption effect on high-frequency instantaneous pressure fluctuations such as water hammer is very limited. In contrast, the pressure regulating mechanism 25, with the airbag 4 as its core, utilizes the compressibility of gas to achieve passive energy storage and buffering. It can absorb high-pressure peaks and compensate for low-pressure drops, has a fast response speed, and does not generate additional throttling losses under normal water pressure. Therefore, using the airbag 4 instead of a pressure regulating valve in this device has significant technical advantages.

[0050] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A water outlet control device of a faucet, comprising a water outlet device (1) and a water outlet pipe (3) in communication with a water inlet of the faucet, characterized in that, Also includes: The outlet end of the water outlet device (1) is connected to a transfer pipe (2) that is coaxial with the outlet pipe (3). The two ends of the transfer pipe (2) and the outlet pipe (3) are respectively fitted with a three-way pipe (11). The two three-way pipes (11) are respectively rotatably connected with a pipe sleeve (5). The side wall of the pipe sleeve (5) is provided with a water hole (6) for water to pass through. After the pipe sleeve (5) rotates, it drives the water hole (6) to align with one of the water outlets of the three-way pipe (11). A bubbler (9) and a pressure stabilizing pipe (10) are symmetrically arranged at the ends of the adapter pipe (2) and the outlet pipe (3), respectively. The two ends of the bubbler pipe (9) and the pressure stabilizing pipe (10) are connected to the water outlets of two three-way pipes (11), respectively. A bubbler mechanism (14) for mixing air and water is arranged inside the bubbler pipe (9) on the side near the outlet pipe (3), and a pressure stabilizing mechanism (25) for stabilizing the instantaneous flow rate of water is arranged inside the pressure stabilizing pipe (10) on the side near the outlet pipe (3). The pressure stabilizing mechanism (25) includes an air bladder (4) arranged inside the pressure stabilizing pipe (10). An air pump (12) is provided on the side of the water outlet device (1). The air outlet of the air pump (12) is connected to a reversing valve (13). The two air outlets of the reversing valve (13) extend into the interior of the aerating tube (9) and the pressure stabilizing tube (10), respectively, and are connected to the input end of the aerating mechanism (14) and the input end of the pressure stabilizing mechanism (25), respectively.

2. The water outlet control device for a faucet according to claim 1, characterized in that, Two sleeves (5) are fixedly connected to a rotating shaft (7) at their close ends. The rotating shaft (7) is driven by a reducer (8) on the same axis. A motor with its output end connected to the reducer (8) is provided on the side of the reducer (8).

3. The water outlet control device for a faucet according to claim 1, characterized in that, The bubbling mechanism (14) also includes an annular air hood (16) coaxially arranged inside the bubble tube, and an air cavity is opened inside the annular air hood (16); One outlet of the reversing valve (13) is fixedly connected to a first air pipe (15). One end of the first air pipe (15) is connected to the reversing valve (13), and the other end is connected to the air chamber inside the annular air cover (16).

4. The water outlet control device for a faucet according to claim 3, characterized in that, Inside the annular air hood (16), a baffle (17) is fixedly connected to the coaxial axis. The baffle (17) is arranged with one-way air valves (18) at equal angles along the circumference. The air inlet end of the one-way air valve (18) faces the side where the first air pipe (15) is connected to the annular air hood (16).

5. The water outlet control device for a faucet according to claim 4, characterized in that, The foaming mechanism (14) also includes a sleeve (19) coaxially fixed to the inner wall of the annular air hood (16). The end of the sleeve (19) near the water inlet of the foaming tube (9) is coaxially fixed to a screen plate (21). The screen plate (21) has honeycomb holes arranged in a circumferential array. The sleeve (19) has air inlets (20) arranged in an equal angle along the circumference, and the air inlets (20) are connected to the air outlet of the one-way valve (18).

6. The water outlet control device for a faucet according to claim 5, characterized in that, The foaming mechanism (14) also includes a mixing disc (22) coaxially fixed to the sleeve (19). The mixing disc (22) is located at one end of the sleeve (19) away from the sieve disc (21). A refining disc (24) is coaxially fixed to the other end of the mixing disc (22) away from the sleeve (19). A mixing cavity is formed on the side of the mixing disk (22) that is close to the sleeve (19), and a refining cavity is formed on the side of the mixing disk (22) that is close to the refining disk (24). The sidewall of the mixing disk (22) is provided with flow channels (23) that connect the mixing cavity and the refining cavity at equal intervals along the circumferential direction. The refining disk (24) is provided with refining holes arranged at equal angles along the circumferential direction.

7. The water outlet control device for a faucet according to claim 1, characterized in that, The pressure stabilizing mechanism (25) also includes a bushing (27) coaxially arranged with the pressure stabilizing pipe (10). The two ends of the bushing (27) are respectively coaxially fixed with lining plates (28). The lining plates (28) are arranged at equal angles along the circumferential direction with clearance holes (29) for water to pass through. The outer walls of the two lining plates (28) are respectively fixed to the inner walls of the pressure stabilizing pipe (10). The airbag (4) is fitted on the outside of the bushing (27). A second air pipe (26) is provided on the side of the pressure stabilizing pipe (10) near the reversing valve (13). One end of the second air pipe (26) is connected to the airbag (4), and the other end is connected to the other output end of the reversing valve (13).

8. The water outlet control device for a faucet according to claim 7, characterized in that, The airbag (4) is ring-shaped and its two ends abut against the sides of the two linings (28) respectively.

9. A water outlet control device and a faucet according to claim 7, characterized in that, The liner (27) has two air passages (30) symmetrically opened along the axial direction. One end of one air passage (30) is connected to the air inlet of the airbag (4), and the other end is connected to the second air tube (26). One end of another airway (30) is connected to the exhaust end of the airbag (4), and the other end is connected to a vent valve (31).

10. A faucet, characterized in that, The water outlet control device for a faucet as described in any one of claims 1-9.

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