Foaming nozzle of intelligent closestool

Abstract

The foaming nozzle of the intelligent closestool comprises a foaming pipe, the foaming pipe comprises a middle section and a tail section, the inner diameter of the tail section is larger than that of the middle section, a spoiler is arranged between the middle section and the tail section, the spoiler comprises an inner pipe and supporting ribs circumferentially fixed to the outer wall of the inner pipe, and the supporting ribs are arranged on the outer wall of the inner pipe. The supporting ribs are connected to the inner wall of the foaming pipe, the outer diameter of the inner pipe is smaller than the inner diameter of the middle section, one end of the inner pipe extends into the middle section, the other end of the inner pipe is arranged on the tail section, a first flow channel is formed in the space in the inner pipe, and a second flow channel is formed in the space in the middle section. And a second flow channel is formed between the outer wall of the inner pipe and the inner wall of the foaming pipe. The foaming nozzle of the intelligent closestool has the advantage that a good turbulent flow effect is achieved under the condition that the overall resistance is small.

Description

Technical Field

[0001] The utility model relates to the field of sanitary ware, in particular to a foaming nozzle of an intelligent toilet. Background Art

[0002] The foaming function of smart toilets plays a crucial role in improving user experience and sanitation. When using the toilet, the foaming function's primary goal is to effectively prevent water splashing. This not only ensures user comfort and safety, but also reduces potential hygiene issues caused by splashing. Secondly, the foaming function significantly reduces dirt buildup on the toilet bowl surface. When the foam evenly coats the bowl surface, it effectively prevents excrement from coming into direct contact with the bowl, reducing the difficulty and frequency of cleaning and creating a cleaner environment for users. Furthermore, the foaming function is significantly effective in suppressing odors. Because the foam forms a barrier layer on the surface of excrement, it effectively prevents the spread of odors, creating a fresher and more pleasant bathroom environment. Furthermore, the foaming function of smart toilets has antibacterial properties. By incorporating antibacterial ingredients into the foam, it effectively inhibits bacterial growth on the bowl surface, further improving sanitation. The foaming function of smart toilets relies primarily on the mixing and dispersion of water, a foaming agent, and air to create bubbles. In the prior art, it is a common method to mix water, foaming agent and air in a nozzle and then disperse them to form foam. However, there are still problems such as uneven foaming and excessive resistance of the foaming structure.

[0003] Chinese patent application publication number CN213062282U, entitled "A Nozzle with Foaming Function for Smart Toilets," discloses a nozzle with a foaming function for smart toilets, comprising a foaming portion and a foaming brush positioned at the water outlet of the nozzle body. The foaming portion comprises a foaming rod and a plurality of foaming filaments fixedly connected to the foaming rod, with a gap between adjacent foaming filaments. One end of the foaming rod is fixedly connected to the middle of the positioning portion. While the provision of the foaming filaments can better disperse the mixed liquid and better assist in foaming, when the brush density is too high, the water flow resistance increases, which can also cause water to overflow from the air inlet. Furthermore, the brush portion is prone to scale growth and bacterial breeding, thus failing to effectively resolve the aforementioned issues. Utility Model Content

[0004] In order to overcome the deficiency of excessive resistance of the spoiling structure in the prior art, the utility model provides a foaming nozzle for an intelligent toilet, which has the advantage of achieving a better spoiling effect while reducing the overall resistance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A foaming nozzle for an intelligent toilet comprises a foaming tube and a spoiler disposed within the foaming tube, wherein the spoiler comprises a spoiler tube and a connector, wherein the connector fixes the spoiler tube within the foaming tube, wherein a first flow channel is provided within the spoiler tube, and a second flow channel is provided between the spoiler tube and the foaming tube, wherein a reducing section for changing the flow rate of the fluid is provided within the first flow channel and / or the second flow channel, so that the fluid passing through the first flow channel and the second flow channel produces different flow rates.

[0007] By adopting the above-mentioned technical solution, it can be known that the spoiler includes a spoiler tube and a connecting piece, and the connecting piece is fixed to the inner wall of the foaming tube to stabilize the spoiler tube in the foaming tube, so that two different flow channels are formed in the spoiler, the spoiler tube has a first flow channel, and a second flow channel is provided between the spoiler tube and the foaming tube. When the fluid passes through the spoiler, it collides with the head of the spoiler to form a first turbulence, thereby generating a first foaming; the fluid continues to pass through the spoiler, and a part of the fluid passes through the spoiler tube, forms a vortex at the outlet of the spoiler tube, undergoes a second turbulence, thereby generating a second foaming; the other part of the fluid The body passes through the second flow channel where the connecting piece is located. Since a variable diameter section for changing the flow rate of the fluid is provided in the first flow channel and / or the second flow channel, the cross-sectional area of the fluid flowing through the first flow channel and / or the second flow channel is changed, thereby generating a flow rate difference. Due to the flow rate difference, a transition flow is formed at the outlet position of the spoiler, thereby generating a third foaming. The three foamings significantly improve the foaming effect, and this spoiler only has impact resistance at the inlet. Therefore, the overall flow resistance generated to the water flow is small, and the turbulent foaming effect can be better achieved under relatively small resistance.

[0008] Furthermore, the ratio of the cross-sectional area at the inlet of the first flow channel to the cross-sectional area at the outlet of the first flow channel is a, and the ratio of the cross-sectional area at the inlet of the second flow channel to the cross-sectional area at the outlet of the second flow channel is b, and a>b.

[0009] By adopting the above-mentioned technical solution, it can be seen that because a>b, the cross-sectional area change rate of the first flow channel is greater than the cross-sectional area change rate of the second flow channel. When the inlet flow rate is the same, the liquid flow rate at the outlet of the second flow channel is less than the liquid flow rate at the outlet of the first flow channel, so there will be a flow rate difference between the flow rate at the outlet of the first flow channel and the flow rate at the outlet of the second flow channel. This flow rate difference will produce a transition flow at the outlet position of the spoiler, thereby producing an additional foaming effect and improving the overall foaming quality.

[0010] Furthermore, the cross-sectional area at the inlet of the second flow channel is smaller than the cross-sectional area at the outlet of the second flow channel, and the cross-sectional area at the inlet of the first flow channel is equal to the cross-sectional area at the outlet of the first flow channel; or, the cross-sectional area at the inlet of the second flow channel is smaller than the cross-sectional area at the outlet of the second flow channel, and the cross-sectional area at the inlet of the first flow channel is larger than the cross-sectional area at the outlet of the first flow channel.

[0011] Using the above technical solution, it can be seen that since the cross-sectional area at the inlet of the second flow channel is smaller than the cross-sectional area at the outlet, when the flow rate remains unchanged, the flow rate is inversely proportional to the cross-sectional area. Therefore, the flow rate of the water in the second flow channel increases from the inlet to the outlet. Since the cross-sectional areas of the inlet and outlet of the first flow channel are equal, the flow rate remains unchanged when the water flows through. Therefore, when the mixed water flows through the spoiler, the water flow with increased flow rate in the first flow channel and the water flow with unchanged flow rate in the second flow channel meet at the spoiler outlet, forming a flow rate difference. This flow rate difference promotes interaction and mixing between the water flows, thereby enhancing the foaming effect and making the foam more delicate. Similarly, the flow rate of the water in the second flow channel decreases from the inlet to the outlet. Since the cross-sectional area at the inlet of the second flow channel is larger than the cross-sectional area at the outlet, the flow rate of the water in the first flow channel increases from the inlet to the outlet. The water flow with increased flow rate in the first flow channel and the water flow with reduced flow rate in the second flow channel meet at the spoiler outlet, forming a larger flow rate difference. The interaction and mixing between water flows are further enhanced, thereby improving the foaming effect and making the foam more delicate.

[0012] Furthermore, the foaming tube includes a middle section, an expanding section with gradually increasing diameter, and a tail section connected in sequence. The expanding section and the spoiler tube form a reducing section in the second flow channel, and the end of the expanding section with a relatively large diameter is connected to the tail section.

[0013] By adopting the above-mentioned technical solution, it can be seen that in the expansion section, due to the gradual increase in diameter, the flow rate of the fluid in the second flow channel will gradually decrease when the diameter of the spoiler tube does not change. When the fluid flow rate decreases, the bubbles in the mixture fluid have more time and opportunities to expand and refine, because the smaller flow rate reduces the rupture and merging of bubbles, and the bubbles have more space and time to fully mix and expand, which is conducive to the production of smaller and more uniform bubbles. The end of the expansion section with a relatively large diameter is connected to the tail section, ensuring that the fluid can smoothly transition to the tail section, avoiding sudden changes in flow rate, and the smooth transition is conducive to maintaining the stability and uniformity of the bubbles, further improving the foaming effect.

[0014] Furthermore, it also includes a nozzle, which is sleeved on the outside of the tail section; or, one end of the nozzle extends into the tail section.

[0015] With the foregoing technical solutions, Solution 1: The nozzle is sleeved outside the tail section. Such a design enables a firm connection to be formed between the nozzle and the tail section, ensuring the stability and positioning accuracy of the nozzle during use. When the nozzle is sleeved outside the tail section, a relatively enclosed space can be formed, which helps to better control the diffusion and spraying direction of the foam. Solution 2: When one end of the nozzle extends into the tail section, the design of the nozzle extending into the tail section can not only reduce the energy loss of the mixed fluid during outflow, keep the foam with higher energy and better foaming effect, but also form turbulence again when a part of the mixed water flow passes through the connecting piece and impacts the outer wall of the spoiler tube and the inner wall of the tail section of the foaming tube, further foaming.

[0016] Furthermore, the spoiler tube is arranged at the central position of the foaming tube, and the connecting piece divides the second flow channel into several sub-flow channels evenly distributed along the circumferential direction of the spoiler tube.

[0017] With the foregoing technical solutions, it can be seen that the spoiler tube is located at the central position of the foaming tube, ensuring that the second flow channel is axisymmetric with respect to the spoiler tube. This makes the resistance and flow characteristics of the fluid during flow consistent in all directions. The connecting piece 132 not only enhances the structural strength of the foaming tube, but also divides the second flow channel into several sub-flow channels. These sub-flow channels are evenly distributed along the circumferential direction of the spoiler tube, so that the fluid is evenly distributed into each sub-flow channel during flow. Since the sub-flow channels are evenly distributed along the circumferential direction of the spoiler tube, the fluid will flow into each sub-flow channel evenly during flow, avoiding the situation of too much or too little fluid in some areas. This is beneficial to the uniform generation and expansion of bubbles. When the fluid flows evenly in the foaming tube, the generation and expansion of bubbles will also be more uniform, thereby producing finer and more uniform foam. This uniform foam not only improves the user experience, but also helps to improve the cleaning effect of the foaming nozzle.

[0018] Furthermore, the number of the connecting pieces is multiple, and the multiple connecting pieces are evenly distributed along the circumferential direction of the axial direction of the foaming tube.

[0019] With the foregoing technical solutions, the spoiler includes a connecting piece circumferentially fixed to the outer wall of the spoiler tube, and the connecting piece is connected to the inner wall of the foaming tube, enabling the spoiler to stably abut against the inner wall of the foaming tube, ensuring the stable position of the spoiler and being not easy to shift or fall off. Setting multiple connecting pieces increases the contact area with the inner wall of the foaming tube. This not only enhances the stability of the spoiler, but also increases the spoiler area of the mixed liquid during flow. The increase in the spoiler area makes the liquid be more disturbed when passing through the spoiler, which helps to generate bubbles more fully. Evenly setting the connecting pieces can ensure that the mixed water flow remains uniform when flowing out, avoiding the problem of uneven mixing caused by too fast or too slow local flow velocity.

[0020] Further, the cross-sectional shape of the spoiler tube is circular, square, oval or triangular.

[0021] Adopting the foregoing technical solution, it can be seen that the spoiler tube with a circular cross-section has high efficiency in fluid dynamics, and the resistance suffered by the fluid when flowing in the spoiler tube is small, which is beneficial to maintaining a high flow rate and flow volume. The spoiler tube with a circular cross-section has good symmetry, making it difficult for the fluid to generate rotation or vortex during the flow process, thereby enhancing the flow stability and making the foaming more uniform; different cross-sectional shapes can be selected according to the needs of different usage scenarios, for example: square, oval or triangular.

[0022] Further, a notch is provided on the side wall of the spoiler tube, and the first flow channel communicates with the second flow channel at the notch position; or, other positions outside the ports at both ends of the spoiler tube are closed structures.

[0023] Adopting the foregoing technical solution, it can be seen that when a notch is provided on the side wall of the spoiler tube, the first flow channel communicates with the second flow channel at the notch position. Since the flow rate of the first flow channel is greater than that of the second flow channel, a negative pressure will be generated at the notch position to make the water flow into the spoiler tube from the second flow channel and mix with the water flow in the first flow channel. The direction of the water flow entering the first flow channel is perpendicular to the water flow direction in the first flow channel, which can further generate a spoiler effect, contribute to more fully generating bubbles, making the fluid receive more disturbances during the flow process, and further promoting the mixing and foaming of the fluid; when the spoiler tube is a closed structure except for the two ends, the fluid can only enter and flow out through the two ends of the spoiler tube, ensuring that the flow path of the fluid in the spoiler tube is fixed, contributing to stabilizing the fluid flow in the flow channel. By restricting the fluid to enter and exit only through the two ends of the spoiler tube, the flow rate and flow volume of the fluid can be better controlled. This control helps to optimize the foaming effect and avoid problems of uneven mixing caused by too fast or too slow flow rate. The closed spoiler tube structure reduces the energy loss of the fluid during the flow process, enabling the fluid to maintain a high energy and speed when flowing out, contributing to generating finer and more uniform foam, and also has the advantages of simple structure and convenient processing.

[0024] Further, the distance between the end of the spoiler tube far from the middle section and the middle section is L1, and the distance between the end of the connecting piece far from the middle section and the middle section is L2, where L1 > L2; or, L1 ≤ L2.

[0025] With the foregoing technical solution, it can be seen that when L1 is greater than L2, the connecting member extends further towards the tail of the foaming nozzle relative to the spoiler tube, such that the connecting member can cover a larger area and has a larger size in the axial direction. Due to the longer length of the connecting members, they can completely separate the second flow channel. In the second flow channel, the fluid is completely separated by the connecting members, forming multiple independent flow channels; when L1 ≤ L2, the connecting member extends less towards the tail of the foaming nozzle relative to the spoiler tube, such that the connecting member has a smaller size in the axial direction. Due to the shorter length of the connecting members, they can only separate the shallow half of the second flow channel. In the second half of the second flow channel, the fluid remains connected and is not completely separated by the connecting members. The connectivity of the second half of the second flow channel allows the fluid to also undergo a certain degree of mixing and perturbation during the flow process.

[0026] Further, it further includes a connector and a nozzle. The connector, the foaming tube, and the nozzle are connected and communicated in sequence. The connector has a first constriction section. The foaming tube includes an expansion section, a middle section, and a tail section that are communicated in sequence from upstream to downstream. The expansion section is sleeved outside the first constriction section. A gap is provided between the inner wall of the expansion section and the outer diameter of the first constriction section to form a negative pressure zone. The expansion section is provided with an air inlet pipe communicated with the negative pressure zone. The middle section is provided with a propellant pipe.

[0027] With the foregoing technical solution, it can be seen that the connector has a first constriction section with a diameter that decreases from large to small. Therefore, when water flows through the first constriction section of the connector and enters the expansion section of the foaming tube, the flow rate increases, and a negative pressure zone will be formed in the gap area between the expansion section and the first constriction section. This is because the increase in flow rate causes the pressure in this area to decrease, thereby forming a pressure difference with the external atmospheric pressure. Since the expansion section is sleeved outside the first constriction section and the expansion section is also provided with an air inlet pipe communicated with the negative pressure zone, external air will be sucked into the foaming tube and mixed with the water. Without an additional power air source, the suction of air can be achieved through the power of the water flow itself, thereby saving energy costs. The middle section of the foaming tube is provided with a propellant pipe for adding a foaming agent. Since the air inlet pipe is provided upstream of the propellant pipe, the air is first mixed with the water and then with the foaming agent, which helps to form a more stable and uniform foam. And because the gas has been fully dispersed in the water, only a small amount of foaming agent needs to be added to achieve a good foaming effect. Finally, the foam is discharged through the nozzle and acts on the toilet bowl.

[0028] The beneficial effect of the present utility model is that it achieves a good spoiler effect while having a relatively small overall resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the working principle diagram (fluid streamline diagram) of the spoiler member for foaming of the present utility model;

[0030] Figure 2It is a schematic diagram of the spoiler connecting piece of the present utility model;

[0031] Figure 3 It is a sectional view of an implementation manner of the spoiler tube notch of the present utility model;

[0032] Figure 4 It is a schematic diagram of the connecting piece of the annular structure of the present utility model;

[0033] Figure 5 It is a working principle diagram (fluid streamline diagram) of the spoiler foaming in an embodiment of the present utility model;

[0034] Figure 6 It is a working principle diagram (fluid streamline diagram) of the spoiler foaming in another embodiment of the present utility model;

[0035] Figure 7 It is the first implementation manner of the spoiler tube notch of the present utility model;

[0036] Figure 8 It is the second implementation manner of the spoiler tube notch of the present utility model;

[0037] Figure 9 It is a schematic diagram of the explosion view of the foaming nozzle of the present utility model;

[0038] Figure 10 It is the installation diagram of the nozzle of the present utility model in the intelligent toilet;

[0039] Figure 11 It is a sectional view of the foaming nozzle of the present utility model. Specific implementation manners

[0040] The following further describes the present utility model in conjunction with the drawings and specific embodiments.

[0041] Embodiment 1:

[0042] As Figure 1 to and Figure 2 shown, a foaming nozzle of an intelligent toilet includes a foaming tube 1 and a spoiler 13 placed in the foaming tube 1. The spoiler 13 includes a spoiler tube 131 and a connecting piece 132. The connecting piece 132 fixes the spoiler tube 131 in the foaming tube 1. A first flow channel 133 is provided in the spoiler tube 131, and a second flow channel 134 is provided between the spoiler tube 131 and the foaming tube 1. A reduced-diameter section for changing the fluid flow rate is provided in the first flow channel 133 and / or the second flow channel 134, so that the fluids passing through the first flow channel 133 and the second flow channel 134 have different flow rates.

[0043] It can be understood that the spoiler 13 includes a spoiler tube 131 and a connecting member 132. The connecting member 132 is fixed to the inner wall of the foaming tube 1 to stabilize the spoiler tube 131 within the foaming tube 1. Two different flow channels are formed within the spoiler 13. The spoiler tube 131 has a first flow channel 133, and a second flow channel 134 is formed between the spoiler tube 131 and the foaming tube 1. When the fluid passes through the spoiler 13, a first turbulence is formed by the impact at the head of the spoiler 13, thereby generating a first foaming; the fluid continues to pass through the spoiler 13, and a part of the fluid passes through the spoiler tube 131, forming a vortex at the outlet of the spoiler tube 131, performing a second turbulence, and thereby generating a second foaming; another part of the fluid passes through the second flow channel 134 where the connecting member 132 is located. Since a reduced-diameter section for changing the fluid flow rate is provided in the first flow channel 133 and / or the second flow channel 134, the cross-sectional area of the fluid flow through the first flow channel 133 and / or the second flow channel 134 is changed, so a flow velocity difference is generated. Due to the flow velocity difference, a transitional flow is formed at the outlet position of the spoiler 13, thereby generating a third foaming. The three foaming processes significantly improve the foaming effect, and this spoiler 13 only has an impact resistance at the inlet, so the overall flow resistance to the water flow is relatively small, and the spoiler foaming effect can be better achieved under relatively small resistance.

[0044] In one embodiment, the spoiler tube 131 has a diameter-expanding section 14 or a diameter-reducing section. The diameter-expanding section 14 or the diameter-reducing section and the spoiler tube 131 enclose a reduced-diameter section in the first flow channel 133, while not changing the diameter of the foaming tube 1. At this time, the purpose of different flow velocities flowing out at the outlet of the spoiler 13 for the first flow channel 133 and the second flow channel 134 can also be achieved.

[0045] In another embodiment, the spoiler tube 131 and the foaming tube 1 can both have a diameter-expanding section 14 or a diameter-reducing section, so that reduced-diameter sections can be generated in both the first flow channel 133 and the second flow channel 134. At this time, the purpose of different flow velocities flowing out at the outlet of the spoiler 13 for the first flow channel 133 and the second flow channel 134 can also be achieved.

[0046] Preferably, the connecting member 132 and the inner wall of the foaming tube 1 can be in abutment, snap connection or integrally formed.

[0047] Preferably, the spoiler tube 131 is arranged at the central position of the foaming tube 1, and the connecting member 132 divides the second flow channel 134 into several sub-flow channels evenly distributed along the circumferential direction of the spoiler tube 131.

[0048] It can be understood that the spoiler tube 131 is located at the central position of the foaming tube 1, ensuring that the second flow channel 134 is axially symmetric with respect to the spoiler tube 131. This enables the resistance and flow characteristics experienced by the fluid during flow to be consistent in all directions. The connecting member 132 not only enhances the structural strength of the foaming tube 1 but also divides the second flow channel 134 into several sub-flow channels. These sub-flow channels are evenly distributed circumferentially along the spoiler tube 131, causing the fluid to be evenly distributed into each sub-flow channel during flow. Since the sub-flow channels are evenly distributed circumferentially along the spoiler tube 131, the fluid will flow evenly into each sub-flow channel during flow, avoiding the situation of excessive or insufficient fluid in certain areas. This is beneficial to the uniform generation and expansion of bubbles. When the fluid flows evenly in the foaming tube 1, the generation and expansion of bubbles will also be more uniform, thereby producing finer and more uniform foam. This uniform foam not only enhances the user experience but also helps improve the cleaning effect of the foaming nozzle.

[0049] In another embodiment, the spoiler tube is eccentrically arranged on the inner wall of the foaming tube.

[0050] Preferably, the number of the connecting members 132 is multiple, and the multiple connecting members 132 are evenly distributed circumferentially along the axial direction of the foaming tube 1.

[0051] It can be understood that the spoiler member 13 includes multiple connecting members 132 that are evenly distributed circumferentially on the outer wall of the spoiler tube 131. The connecting members 132 are connected to the inner wall of the foaming tube 1, enabling the spoiler member 13 to stably abut against the inner wall of the foaming tube 1, ensuring the stable position of the spoiler member 13 and making it not easy to shift or fall off. The setting of multiple connecting members 132 increases the contact area with the inner wall of the foaming tube 1. This not only enhances the stability of the spoiler member 13 but also increases the spoiler area of the mixed liquid during flow. The increase in the spoiler area causes the fluid to be more disturbed when passing through the spoiler member 13, contributing to more sufficient generation of bubbles. The uniform setting of the connecting members 132 can ensure that the mixed water flow remains uniform when flowing out, avoiding the problem of uneven mixing caused by too fast or too slow local flow velocity.

[0052] Specifically, in this embodiment, the number of the connecting members is 3, and in other embodiments, it is determined according to specific usage requirements.

[0053] As a preference, as Figure 4 shown, the connecting member can be set as an annular structure or a support rib with a hole in the middle.

[0054] Preferably, in this embodiment, the cross-sectional shape of the spoiler tube 131 is circular.

[0055] It can be understood that the spoiler tube 131 with a circular cross-section has high hydrodynamic efficiency, and the resistance suffered by the fluid when flowing in the spoiler tube 131 is small, which is conducive to maintaining a high flow rate and flow volume. The spoiler tube 131 with a circular cross-section has good symmetry, making it difficult for the fluid to generate rotation or eddy current during the flow process, thereby enhancing the flow stability and making the foaming more uniform.

[0056] In another embodiment, the cross-sectional shape of the spoiler tube 131 can also be square, oval or triangular.

[0057] Different cross-sectional shapes can be selected according to the needs of different usage scenarios.

[0058] In one embodiment, as Figure 3 shown, a notch 135 is provided on the side wall of the spoiler tube 131, and the first flow channel 133 communicates with the second flow channel 134 at the notch position.

[0059] It can be understood that when a notch is provided on the side wall of the spoiler tube 131, the first flow channel 133 communicates with the second flow channel 134 at the notch position. Since the flow rate of the first flow channel 133 is greater than that of the second flow channel 134, a negative pressure will be generated at the notch position to make the water flow into the spoiler tube 131 from the second flow channel 134 and mix with the water flow in the first flow channel 133. The direction of the water flow entering the first flow channel 133 is perpendicular to the water flow direction in the first flow channel 133, which can further generate a spoiler effect, contribute to more fully generating bubbles, and make the fluid receive more disturbances during the flow process, further promoting the mixing and foaming of the fluid.

[0060] In other embodiments, as Figure 3 and Figure 7 shown, the notch 135 can be a round hole, as Figure 8 shown, or it can be a notch 135 that is completely open along the axis of the spoiler tube 131.

[0061] In another embodiment, other positions outside the ports at both ends of the spoiler tube 131 are all closed structures.

[0062] It can be understood that when the turbulator tube 131 is a closed structure except for the two end ports, the fluid can only enter and flow out through the two ends of the turbulator tube 131, ensuring that the flow path of the fluid in the turbulator tube 131 is fixed, which helps to stabilize the fluid flow in the flow channel. By restricting the fluid to only enter and exit through the two ends of the turbulator tube 131, the flow rate and flow volume of the fluid can be better controlled. This control helps to optimize the foaming effect and avoid the problem of uneven mixing caused by too fast or too slow flow rate. The closed structure of the turbulator tube 131 reduces the energy loss of the fluid during the flow process, enabling the fluid to maintain a higher energy and speed when flowing out, which helps to generate finer and more uniform foam. It also has the advantages of simple structure and convenient processing.

[0063] In one embodiment, the distance between the end of the turbulator tube 131 away from the middle section 11 and the middle section 11 is L1, and the distance between the end of the connecting member 132 away from the middle section 11 and the middle section 11 is L2, where L1 > L2.

[0064] It can be understood that when L1 is greater than L2, the connecting member 132 extends further towards the tail of the foaming nozzle relative to the turbulator tube 131, enabling the connecting member 132 to cover a larger area and having a larger size in the axial direction. Due to the longer length of the connecting member 132, they can completely separate the second flow channel 134. In the second flow channel 134, the fluid is completely separated by the connecting member 132, forming multiple independent flow channels.

[0065] In other embodiments, the distance between the end of the turbulator tube 131 away from the middle section 11 and the middle section 11 is L1, and the distance between the end of the connecting member 132 away from the middle section 11 and the middle section 11 is L2, where L1 ≤ L2.

[0066] It can be understood that when L1 ≤ L2, the connecting member 132 extends shorter towards the tail of the foaming nozzle relative to the turbulator tube 131, resulting in a smaller size of the connecting member 132 in the axial direction. Due to the shorter length of the connecting member 132, they can only separate the shallow half of the second flow channel 134. In the second half of the second flow channel 134, the fluid is still connected and not completely separated by the connecting member 132. The connectivity of the second half of the second flow channel 134 allows the fluid to also undergo a certain degree of mixing and perturbation during the flow process.

[0067] Embodiment 2:

[0068] Based on Embodiment 1, as Figure 1 shown, the ratio of the cross-sectional area at the inlet of the first flow channel 133 to the cross-sectional area at the outlet of the first flow channel 133 is a, and the ratio of the cross-sectional area at the inlet of the second flow channel 134 to the cross-sectional area at the outlet of the second flow channel 134 is b, where a > b.

[0069] It can be understood that because a>b, the cross-sectional area change rate of the first flow channel 133 is smaller than the cross-sectional area change rate of the second flow channel 134. When the inlet flow rate is the same, the liquid flow rate at the outlet of the second flow channel 134 is smaller than the liquid flow rate at the outlet of the first flow channel 133. Therefore, a flow rate difference will be generated between the flow rate at the outlet of the first flow channel 133 and the flow rate at the outlet of the second flow channel 134. This flow rate difference will produce a transition flow at the outlet position of the spoiler 13, thereby producing an additional foaming effect and improving the overall foaming quality.

[0070] In one embodiment, the cross-sectional area at the inlet of the second flow channel 134 is smaller than the cross-sectional area at the outlet of the second flow channel 134 , and the cross-sectional area at the inlet of the first flow channel 133 is equal to the cross-sectional area at the outlet of the first flow channel 133 .

[0071] It is understood that because the cross-sectional area at the inlet of the second flow channel 134 is smaller than that at the outlet, the flow rate is inversely proportional to the cross-sectional area when the flow rate remains unchanged. Therefore, the water flow in the second flow channel 134 increases in velocity as it moves from the inlet to the outlet. Since the cross-sectional areas at the inlet and outlet of the first flow channel 133 are equal, the water flow rate remains unchanged as it passes through. Therefore, when the mixed water flow passes through the spoiler 13, the water flow with increased velocity in the first flow channel 133 and the water flow with unchanged velocity in the second flow channel 134 meet at the outlet of the spoiler 13, forming a flow velocity difference. This flow velocity difference promotes interaction and mixing between the water flows, thereby enhancing the foaming effect and making the foam more delicate.

[0072] In another embodiment, the cross-sectional area at the inlet of the second flow channel 134 is smaller than the cross-sectional area at the outlet of the second flow channel 134 , and the cross-sectional area at the inlet of the first flow channel 133 is larger than the cross-sectional area at the outlet of the first flow channel 133 .

[0073] It is understood that because the cross-sectional area at the inlet of the second flow channel 134 is smaller than that at the outlet, and with the flow rate remaining constant, the flow velocity is inversely proportional to the cross-sectional area. Therefore, the flow velocity of the water in the second flow channel 134 decreases as it moves from the inlet to the outlet. However, because the cross-sectional area at the inlet of the second flow channel 134 is larger than that at the outlet, the flow velocity of the water in the first flow channel 133 increases as it moves from the inlet to the outlet. The water flow with increased velocity in the first flow channel 133 meets the water flow with decreased velocity in the second flow channel 134 at the outlet of the spoiler 13, creating a greater velocity difference. This further enhances the interaction and mixing between the water flows, thereby improving the foaming effect and making the foam more delicate.

[0074] Embodiment 3:

[0075] On the basis of Example 1, Figure 11As shown, the foaming tube 1 includes a middle section 1111, an expanding section 14 with a gradually increasing diameter, and a tail section 12 connected in sequence. The expanding section 14 and the spoiler tube 131 form a reducing section in the second flow channel 134, and the end of the expanding section 14 with a relatively large diameter is connected to the tail section 12.

[0076] It can be understood that in the expansion section 14, due to the gradual increase in diameter, when the diameter of the spoiler tube 131 does not change, the fluid flow rate in the second flow channel 134 will gradually decrease. When the fluid flow rate decreases, the bubbles in the mixture fluid have more time and opportunities to expand and refine, because the smaller flow rate reduces the rupture and merging of bubbles, and the bubbles have more space and time to fully mix and expand, which is conducive to producing smaller and more uniform bubbles. The end of the expansion section 14 with a relatively large diameter is connected to the tail section 12, ensuring that the fluid can smoothly transition to the tail section 12, avoiding sudden changes in flow rate, and the smooth transition is conducive to maintaining the stability and uniformity of the bubbles, further improving the foaming effect.

[0077] As a preferred Figure 6 As shown, it also includes a nozzle 3, which is sleeved on the outside of the tail section 12.

[0078] It can be understood that the nozzle 3 is mounted on the outside of the tail section 12. This design forms a stable connection between the nozzle 3 and the tail section 12, ensuring the stability and positioning accuracy of the nozzle 3 during use. When the nozzle 3 is mounted on the outside of the tail section 12, a relatively closed space can be formed, which helps to better control the diffusion and spraying direction of the foam.

[0079] In another embodiment, Figure 5 As shown, one end of the nozzle 3 extends into the tail section 12 .

[0080] It can be understood that when one end of the nozzle 3 extends into the tail section 12, the design of the nozzle 3 extending into the tail section 12 can not only reduce the energy loss of the mixed fluid during the outflow process, so that the foam maintains higher energy and better foaming effect, but also a part of the mixed water flow passes through the connecting piece 132 and collides with the outer wall of the spoiler tube 131 and the inner wall of the tail section 12 of the foaming tube 1 to form turbulence again, thereby further foaming.

[0081] Embodiment 4:

[0082] On the basis of Example 1, Figure 9 、 Figure 10 and Figure 11As shown, the foaming nozzle of the smart toilet also includes a connecting head 2 and a nozzle 3. The connecting head 2, the foaming tube 1 and the nozzle 3 are connected and communicated in sequence. The connecting head 2 has a first contraction section 21. The foaming tube 1 includes an expansion section 22, an intermediate section 11 and a tail section 12 which are connected in sequence from upstream to downstream. The expansion section 22 is sleeved on the outside of the first contraction section 21. A gap is provided between the inner wall of the expansion section 22 and the outer diameter of the first contraction section 21 to form a negative pressure zone. The expansion section 22 is provided with an air inlet pipe 23 communicated with the negative pressure zone, and the intermediate section 11 is provided with a drug inlet pipe 16.

[0083] It can be understood that the connector 2 has a first contraction section 21 with a diameter that changes from large to small. Therefore, when the water flows through the first contraction section 21 of the connector 2 and enters the expansion section 22 of the foaming tube 1, the flow rate increases, and a negative pressure zone is formed in the gap area between the expansion section 22 and the first contraction section 21. This is because the increase in flow rate causes the pressure in this area to decrease, thereby forming a pressure difference with the external atmospheric pressure. Since the expansion section 22 is sleeved on the outside of the first contraction section 21, and an air inlet pipe 23 is also provided on the expansion section 22, which is connected to the negative pressure zone, external air will be sucked into the foaming tube. 1, mixed with water, no additional power gas source is required, and air can be inhaled by the power of the water flow itself, thereby saving energy costs. The middle section 11 of the foaming tube 1 is provided with an inlet pipe 16 for adding foaming agent. Since the air inlet pipe 23 is provided upstream of the inlet pipe 16, the air is first mixed with water and then with the foaming agent, which helps to form a more stable and uniform foam. Moreover, because the gas has been fully dispersed in the water, only a small amount of foaming agent needs to be added to achieve a good foaming effect. Finally, the foam is discharged through the nozzle 3 to act on the toilet.

[0084] Preferably, the connector 2 has threads and O-rings at both ends. The threads are used to connect to other components of the device, and the O-rings are used to seal the connection with the foaming tube 1. The nut 4, gasket 5, and conical gasket 6 cooperate with the nozzle 3 to complete the installation and fixation on the toilet. The inner hole of the connector 2 is designed to have a gradually narrowing structure to accelerate the water flow.

[0085] Preferably, an O-ring is also provided at the rear end of the nozzle 3 for sealing, a thread is provided in the middle part for fixing on the toilet, and the nozzle at the front end of the nozzle 3 is deflected toward the side of the toilet to guide the water flow.

[0086] Preferably, the nozzle of the nozzle head 3 is deflected 10 to 30 degrees toward the side wall of the toilet.

[0087] Preferably, a dosing port 161 is provided on the dosing pipe 16 , and a duckbill valve 162 is provided on the dosing port 161 to prevent backflow of water caused by the negative pressure generated at the contraction section of the foaming tube 1 .

[0088] Preferably, the direction of rotation during the locking process of the connector 2 and the foaming tube 1 is the same as the direction of tightening the threads on the connector 2, to avoid loosening the other connection when tightening the threads or tightening the connector 2 and the foaming tube 1.

[0089] Preferably, the foaming tube 1 and the nozzle 3 are sealed with an O-ring and locked with a buckle 7.

Claims

1. A foaming nozzle for an intelligent toilet, characterized in that: It includes a foaming tube and a flow spoiler disposed within the foaming tube. The flow spoiler includes a flow spoiler tube and a connecting member. The connecting member fixes the flow spoiler tube in the foaming tube. A first flow channel is provided within the flow spoiler tube, and a second flow channel is provided between the flow spoiler tube and the foaming tube. A diameter-changing section for changing the fluid flow rate is provided within the first flow channel and / or the second flow channel, so that the fluids passing through the first flow channel and the second flow channel have different flow rates.

2. The foaming nozzle of an intelligent toilet according to claim 1, characterized in that, The ratio of the cross-sectional area at the inlet of the first flow channel to the cross-sectional area at the outlet of the first flow channel is a, and the ratio of the cross-sectional area at the inlet of the second flow channel to the cross-sectional area at the outlet of the second flow channel is b, where a > b.

3. The foaming nozzle of an intelligent toilet according to claim 1, characterized in that, The cross-sectional area at the inlet of the second flow channel is smaller than the cross-sectional area at the outlet of the second flow channel, and the cross-sectional area at the inlet of the first flow channel is equal to the cross-sectional area at the outlet of the first flow channel; or, the cross-sectional area at the inlet of the second flow channel is smaller than the cross-sectional area at the outlet of the second flow channel, and the cross-sectional area at the inlet of the first flow channel is larger than the cross-sectional area at the outlet of the first flow channel.

4. The foaming nozzle of the smart toilet according to claim 1, characterized in that: The foaming tube includes an intermediate section, a diameter-expanding section with a gradually increasing diameter, and a tail section connected in sequence. The diameter-expanding section and the flow spoiler tube enclose the diameter-changing section in the second flow channel, and the end with a relatively larger diameter of the diameter-expanding section is communicated with the tail section.

5. The foaming nozzle of an intelligent toilet according to claim 4, characterized in that, It further includes a nozzle. The nozzle is sleeved outside the tail section; or, one end of the nozzle extends into the tail section.

6. The foaming nozzle of the smart toilet according to claim 1, characterized in that: The flow spoiler tube is disposed at the central position of the foaming tube, and the connecting member divides the second flow channel into several sub-flow channels evenly distributed circumferentially along the flow spoiler tube.

7. The foaming nozzle of an intelligent toilet according to claim 1, characterized in that, The number of the connecting members is multiple, and the multiple connecting members are evenly distributed circumferentially along the axial direction of the foaming tube.

8. The foaming nozzle of an intelligent toilet according to claim 1, characterized in that, The cross-sectional shape of the flow spoiler tube is circular or square or oval or triangular.

9. The foaming nozzle of an intelligent toilet according to claim 1, characterized in that, Notches are provided on the side wall of the flow spoiler tube, and the first flow channel is communicated with the second flow channel at the notch position; or, the positions outside the ports at both ends of the flow spoiler tube are of a closed structure.

10. The foaming nozzle of an intelligent toilet according to claim 4, characterized in that, The distance between the end of the flow spoiler tube away from the intermediate section and the intermediate section is L1, and the distance between the end of the connecting member away from the intermediate section and the intermediate section is L2, where L1 > L2; or, L1 ≤ L2.

11. The foaming nozzle of an intelligent toilet according to claim 1, characterized in that, It further includes a connector and a nozzle. The connector, the foaming tube, and the nozzle are connected and communicated in sequence. The connector has a first constriction section. The foaming tube includes an expansion section, an intermediate section, and a tail section connected in sequence from upstream to downstream. The expansion section is sleeved outside the first constriction section. A gap is provided between the inner wall of the expansion section and the outer diameter of the first constriction section to form a negative pressure area. The expansion section is provided with an air inlet pipe communicated with the negative pressure area, and the intermediate section is provided with a propellant pipe.

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