Spray head assembly and bathroom device

Abstract

The utility model relates to the technical field of spraying devices, and discloses a spray head assembly and a bathroom device.The spray head assembly comprises a liquid inlet part and is provided with a liquid inlet cavity, the cavity wall of the liquid inlet cavity comprises an inner cavity wall and an outer cavity wall, the outer cavity wall is arranged on the outer side of the inner cavity wall in a surrounding mode, and a gap is formed between the outer cavity wall and the inner cavity wall to form the liquid inlet cavity; the inner cavity wall and / or the outer cavity wall are / is provided with at least one fluctuating section, and the fluctuating section extends in the direction from the liquid inlet end to the liquid outlet end of the liquid inlet cavity, so that at least part of the inner cavity of the liquid inlet cavity is gradually shrunk in the direction from the liquid inlet end to the liquid outlet end. The turbulent flow effect of mixed liquid sprayed out of the liquid outlet end can be enhanced, the contact surface area of the mixed liquid and air is increased, and the foaming effect is improved.

Description

Technical Field

[0001] This application relates to the field of spray device technology, specifically to nozzle assemblies and bathroom fixtures. Background Technology

[0002] With the improvement of modern living standards, people have increasingly higher requirements for living environment and personal hygiene facilities. As an important part of modern homes, the functionality and comfort of smart toilets have become a focus of consumer attention. Among them, the foam shield function is a major highlight of smart toilets. By covering the toilet bowl with a layer of foam formed by mixing foaming agent and water and introducing air, it effectively achieves multiple functions such as splash prevention, odor isolation, wall lubrication, and sterilization, greatly enhancing the user experience. The core of foam shield technology lies in how to efficiently and evenly mix air into the foaming agent and water mixture to form a stable and high-quality foam layer.

[0003] Currently, mainstream foam shield technology on the market uses an air pump as the air introduction device, directly pumping air into the mixture of foaming agent and water to form the desired foam. However, this method has significant drawbacks: the air output by the air pump is often uneven, resulting in inconsistent foaming effects and affecting the stability and coverage of the foam layer. Furthermore, the introduction of the air pump not only increases the complexity of the system but also brings additional cost burdens and potential failure risks, which is detrimental to the long-term stable operation and cost control of the product. To overcome these limitations, in recent years, a technical solution utilizing self-aspirating foam nozzles has emerged on the market. This solution sprays the mixture at high speed through small orifices into a cavity, using the Venturi effect to draw in surrounding air for mixing, attempting to achieve pump-free air introduction.

[0004] While self-priming foam nozzles simplify the system structure and reduce reliance on air pumps to some extent, significant technical challenges remain in practical operation. Specifically, because the nozzles typically spray the mixture in a thin, columnar shape, this design limits the surface area of ​​contact between the mixture and air, resulting in a very limited amount of air that can be carried. This, in turn, affects the foaming effect and volume, leading to unsatisfactory foam layer quality. To compensate for this deficiency, it is often necessary to increase the amount of foaming agent used, which not only wastes the agent but also further increases production costs. Utility Model Content

[0005] This application provides a nozzle assembly and bathroom fixture to solve the problem of limited contact surface area between the mixed liquid and air, which affects the foaming effect.

[0006] In a first aspect, this application provides a nozzle assembly including a liquid inlet section and a liquid inlet chamber. The wall of the liquid inlet chamber includes an inner cavity wall and an outer cavity wall. The outer cavity wall is disposed around the outer side of the inner cavity wall, and a gap is provided between the two to form the liquid inlet chamber. At least one undulating segment is provided on the inner cavity wall and / or the outer cavity wall, and the undulating segment extends along the direction from the liquid inlet end to the liquid outlet end of the liquid inlet chamber, so that at least a portion of the inner cavity of the liquid inlet chamber gradually narrows along the direction from the liquid inlet end to the liquid outlet end.

[0007] Beneficial effects: This nozzle assembly, by setting an inlet chamber with undulating sections, not only achieves a gradually narrowing structure of at least part of the inner cavity of the inlet chamber along the direction from the inlet end to the outlet end, thus enhancing the flow velocity of the mixture within the inlet chamber, but also continuously changes the flow direction of the mixture by the undulating sections, breaking the stable laminar flow state of the mixture within the inlet chamber. This allows the mixture to be sprayed out from the outlet end in a dispersed turbulent state, creating gaps between water droplets, increasing the contact area between the mixture and air, increasing the amount of air carried by the mixture, and improving the mixing efficiency of the mixture and air. This results in a stable and high-quality foam layer, which not only improves the foaming effect and foaming volume, but also reduces the waste of foaming agent and lowers production costs.

[0008] In one optional embodiment, the undulating segment is arranged circumferentially along the inner cavity wall and / or the outer cavity wall, and the undulating segment includes a first segment and a second segment, which are distributed along the direction from the inlet end to the outlet end of the liquid inlet cavity. The side of the first segment and the second segment facing the liquid inlet cavity are obliquely intersecting the direction from the inlet end to the outlet end of the liquid inlet cavity.

[0009] Beneficial effects: The undulating section is arranged circumferentially along the inner and / or outer cavity walls and is divided into a first segment and a second segment, which are obliquely intersecting the direction from the inlet end to the outlet end of the inlet cavity. This design allows the mixture to generate stronger disturbance and shear force when flowing through the undulating section, thereby more effectively changing the flow direction of the mixture, breaking the stable laminar flow state of the mixture in the inlet cavity, and allowing the mixture to be sprayed out from the outlet end in a dispersed turbulent state, thereby introducing air into the mixture and forming a finer and more uniform foam.

[0010] In one optional embodiment, the liquid inlet is provided with a liquid inlet channel, a liquid inlet is provided at a first end along its axial direction of the liquid inlet channel, a liquid outlet is provided at a second end along its axial direction of the liquid inlet channel, the liquid inlet is provided in the liquid inlet channel, the liquid inlet is connected to the liquid inlet end, the liquid outlet is connected to the liquid outlet end, and the axis of the liquid inlet channel coincides with that of the liquid inlet cavity.

[0011] Beneficial effects: By setting an inlet channel that coincides with the axis of the inlet chamber, the mixed liquid can flow smoothly into the inlet chamber and achieve efficient turbulence under the action of the undulating section. This design simplifies the internal structure of the nozzle, improves the flow efficiency of the mixed liquid, and reduces energy consumption.

[0012] In an optional embodiment, a flow guide is further included. The flow guide has a diversion section and a flow guide section. A diversion hole is provided on the side of the diversion section, and the flow guide section is connected to the side of the diversion section. The inlet channel is sequentially divided into a first channel and a second channel along its first end to its second end. The inner diameter of the first channel is larger than the inner diameter of the second channel. The diversion section is disposed within the first channel and abuts against the outer wall of the second channel. The flow guide section is disposed within the second channel. The outer wall of the flow guide section and the inner wall of the second channel form the inlet cavity. The undulating section is located on the outer wall of the flow guide section and / or the inner wall of the second channel. The diversion hole connects the first channel and the inlet cavity.

[0013] Beneficial effects: The guide vane design allows the mixture to enter the inlet chamber through the diversion holes on the distributor when flowing through the inlet channel, further enhancing the dispersion effect of the mixture. Simultaneously, the design of the guide vane also ensures the formation of the inlet chamber, improving the foaming effect.

[0014] In one alternative embodiment, the side of the diversion section is provided with a plurality of diversion holes spaced circumferentially thereon.

[0015] Beneficial effects: The multiple diversion holes spaced circumferentially on the side of the diversion section allow the mixture to be more evenly dispersed into the inlet chamber, avoiding excessive accumulation of the mixture in local areas. When used in conjunction with the undulating section, it further improves the turbulence effect on the foaming liquid.

[0016] In one optional embodiment, the system further includes a mixing section, a foaming section, and a mesh. The mixing section has a mixing chamber and an air inlet. A first end of the air inlet communicates with the mixing chamber, and a second end of the air inlet communicates with the outside. The first end of the mixing chamber communicates with the liquid outlet of the liquid inlet chamber. The foaming section has a foaming channel that communicates with the second end of the mixing chamber. The mesh is disposed between the foaming channel and the communication between the second end of the mixing chamber.

[0017] Beneficial effects: The mixing and foaming sections allow the mixture to be further homogenized after air is introduced, forming a fine foam layer through the mesh. This design not only improves the foaming effect but also makes the foam layer more stable and prolongs the foam's duration.

[0018] In one optional embodiment, the direction from the first end to the second end of the mixing chamber is parallel to the direction from the inlet end to the outlet end of the liquid inlet chamber, and is perpendicular to the side of the mesh.

[0019] Beneficial effects: The direction from the first end to the second end of the mixing chamber is parallel to the direction from the inlet end to the outlet end of the liquid inlet chamber, and perpendicular to the side of the mesh. This design ensures that the mixed liquid can be sprayed in a certain direction within the mixing chamber, and after being fully mixed with air, it can directly impact the mesh, improving foaming efficiency.

[0020] In one optional embodiment, a snap-fit ​​block is provided on the outer wall of the mixing section, and a settling groove is provided on the foaming section. The settling groove is connected to the foaming channel. The second end of the mixing section is located in the settling groove and abuts against the outer wall of the mixing section and the inner wall of the settling groove. A snap-fit ​​hole is provided on the inner wall of the settling groove, and the snap-fit ​​hole snaps into the snap-fit ​​block.

[0021] Beneficial effects: The snap-fit ​​blocks and snap-fit ​​holes allow the mixing and foaming sections to be easily and reliably connected. This design simplifies the nozzle assembly process, improves production efficiency, and also facilitates nozzle maintenance and replacement.

[0022] In one optional embodiment, the first end of the foaming channel is located on the wall of the settling tank along the direction from the first end to the second end of the mixing chamber, and the mesh is disposed between the wall of the settling tank along the direction from the first end to the second end of the mixing chamber and the second end of the mixing chamber.

[0023] Beneficial effects: The first end of the foaming channel is located on the tank wall along the direction from the first end to the second end of the mixing chamber in the settling tank. The mesh is positioned between the tank wall along the direction from the first end to the second end of the mixing chamber and the second end of the mixing chamber. This design achieves precise positioning of the mesh, which not only simplifies the nozzle assembly process and improves production efficiency, but also prevents foam leakage between the mixing section and the foaming section.

[0024] Secondly, this application also provides a bathroom fixture including a shower head assembly.

[0025] Since bathroom fixtures include shower head assemblies, which have the same effect as shower head assemblies, they will not be described in detail here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a nozzle assembly according to an embodiment of this application;

[0028] Figure 2 This is a cross-sectional view of a nozzle assembly according to an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the liquid inlet and mixing section in the embodiments of this application;

[0030] Figure 4 This is a cross-sectional view of the liquid inlet and mixing section in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of the bubble outlet in an embodiment of this application;

[0032] Figure 6 This is a cross-sectional view of the bubbling section in an embodiment of this application;

[0033] Figure 7 This is a schematic diagram of the flow guide in the embodiments of this application;

[0034] Figure 8 This is a cross-sectional view of the flow guide in an embodiment of this application;

[0035] Figure 9 This is a schematic diagram of a structure with an undulating segment in an embodiment of this application;

[0036] Figure 10 This is a schematic diagram of a structure with multiple undulating segments in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Liquid inlet section; 1001. Liquid inlet chamber; 1002. Liquid inlet; 1003. Liquid outlet; 1004. First channel; 1005. Second channel; 2. Flow guide; 2001. Undulating section; 2002. Flow divider; 2003. Flow guide; 2004. Flow divider hole; 3. Mesh; 4. Mixing section; 4001. Mixing chamber; 4002. Air inlet; 4003. Snap-fit ​​block; 5. Bubble outlet section; 5001. Bubble outlet channel; 5002. Settling tank; 5003. Snap-fit ​​hole. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The following is combined with Figures 1 to 10 This describes an embodiment of the present application.

[0041] According to an embodiment of this application, in one aspect, a nozzle assembly is provided, including a liquid inlet 1 and a liquid inlet chamber 1001. The wall of the liquid inlet chamber 1001 includes an inner wall and an outer wall. The outer wall is disposed around the outer side of the inner wall, and there is a gap between the two to form the liquid inlet chamber 1001. At least one undulating segment 2001 is provided on the inner wall and / or the outer wall, and the undulating segment 2001 extends along the direction from the liquid inlet end to the liquid outlet end of the liquid inlet chamber 1001, so that at least a part of the inner cavity of the liquid inlet chamber 1001 gradually narrows along the direction from the liquid inlet end to the liquid outlet end.

[0042] Understandably, the outer cavity wall of the liquid inlet chamber 1001 is arranged around the outer side of the inner cavity wall, which makes the entire liquid inlet chamber 1001 form a ring or quasi-ring structure. When the mixed liquid enters the liquid inlet chamber 1001 from the liquid inlet end, the mixed liquid can be distributed along the circumference of the liquid inlet chamber 1001 and flow along its axial direction, thereby dispersing the mixed liquid and enhancing the turbulence effect of the undulating section 2001.

[0043] It should be noted that the undulating section 2001 is used to change the flow direction of the mixture in the inlet chamber 1001, thereby enhancing its turbulence effect. Therefore, the undulating section 2001 can be set on both the outer and inner walls of the inlet chamber 1001.

[0044] In this embodiment, the nozzle assembly, by providing an inlet chamber 1001 with undulating sections 2001, not only achieves a gradually narrowing structure of at least a portion of the inner cavity of the inlet chamber 1001 along the direction from the inlet end to the outlet end, thereby enhancing the flow velocity of the mixture within the inlet chamber 1001, but also allows the undulating sections 2001 to continuously change the flow direction of the mixture, breaking the stable laminar flow state of the mixture within the inlet chamber 1001. This enables the mixture to be sprayed out from the outlet end in a dispersed turbulent state, creating gaps between water droplets, increasing the contact area between the mixture and air, increasing the amount of air carried by the mixture, improving the mixing efficiency of the mixture and air, and forming a stable and high-quality foam layer. This not only improves the foaming effect and foaming volume but also reduces the waste of foaming agent and lowers production costs.

[0045] In one embodiment, the undulating segment 2001 is arranged circumferentially along the inner cavity wall and / or the outer cavity wall, and the undulating segment 2001 includes a first segment and a second segment, which are distributed along the direction from the liquid inlet end to the liquid outlet end of the liquid inlet cavity 1001. The side of the first segment and the second segment facing the liquid inlet cavity 1001 are obliquely intersecting the direction from the liquid inlet end to the liquid outlet end of the liquid inlet cavity 1001.

[0046] Optionally, multiple undulating sections 2001 can be arranged at intervals or continuously within the liquid inlet chamber 1001 to avoid clogging of the liquid inlet chamber 1001. Specifically, multiple undulating sections 2001 can be arranged on the inner wall of the chamber, multiple undulating sections 2001 can be arranged on the outer wall of the chamber, or multiple sections can be arranged on both the inner and outer walls of the chamber and staggered.

[0047] Optionally, the undulating section 2001 can be configured as an arc-shaped structure, and the undulating section 2001 can be distributed circumferentially along the liquid inlet chamber 1001, which can further increase the turbulence effect.

[0048] Optionally, the undulating section 2001 can be configured as an arc-shaped structure and can be spirally distributed along the axial direction of the liquid inlet chamber 1001 on the inner wall and / or outer wall.

[0049] Optionally, the undulating segment 2001 may also include multiple third segments, which are continuously set with the first and second segments to form a broken line structure, which can further increase the turbulence effect.

[0050] In this embodiment, the undulating section 2001 is arranged circumferentially along the inner and / or outer cavity walls and is divided into a first segment and a second segment, which are obliquely intersecting the direction from the inlet end to the outlet end of the inlet cavity 1001. This design allows the mixture to generate stronger disturbance and shear force when flowing through the undulating section 2001, thereby more effectively changing the flow direction of the mixture, breaking the stable laminar flow state of the mixture in the inlet cavity 1001, and enabling the mixture to be sprayed out from the outlet end in a dispersed turbulent state, thereby introducing air into the mixture to form a finer and more uniform foam.

[0051] In one embodiment, the liquid inlet 1 is provided with a liquid inlet channel, a liquid inlet 1002 is provided at the first end of the liquid inlet channel along its axial direction, a liquid outlet 1003 is provided at the second end of the liquid inlet channel along its axial direction, a liquid inlet chamber 1001 is provided in the liquid inlet channel, the liquid inlet 1002 is connected to the liquid inlet end, the liquid outlet 1003 is connected to the liquid outlet end, and the axis of the liquid inlet channel coincides with that of the liquid inlet chamber 1001.

[0052] In this embodiment, by setting an inlet channel that coincides with the axis of the inlet chamber 1001, it is ensured that the mixture can flow smoothly into the inlet chamber 1001 and achieve efficient turbulence under the action of the undulating section 2001. This design simplifies the internal structure of the nozzle, improves the flow efficiency of the mixture, and reduces energy consumption.

[0053] In one embodiment, a flow guide 2 is also included. The flow guide 2 is provided with a flow splitting section 2002 and a flow guide section 2003. A flow splitting hole 2004 is provided on the side of the flow splitting section 2002, and the flow guide section 2003 is connected to the side of the flow splitting section 2002. The inlet channel is divided into a first channel 1004 and a second channel 1005 along the direction from the first end to the second end. The inner diameter of the first channel 1004 is larger than the inner diameter of the second channel 1005. A diversion part 2002 is disposed in the first channel 1004 and abuts against the outer wall of the second channel 1005. A guide part 2003 is disposed in the second channel 1005. The outer side wall of the guide part 2003 and the inner side wall of the second channel 1005 form an inlet cavity 1001. An undulating section 2001 is located on the outer side wall of the guide part 2003 and / or the inner side wall of the second channel 1005. A diversion hole 2004 connects the first channel 1004 and the inlet cavity 1001.

[0054] Understandably, by continuously changing the flow direction of the liquid in the liquid inlet chamber 1001, the stable laminar flow state of the liquid in the liquid inlet chamber 1001 is broken, avoiding the formation of a dense laminar water curtain. Instead, a dispersed turbulent flow is formed and ejected at the liquid outlet. The ejected water flow is discontinuous and not dense, with gaps between each water droplet or liquid segment. These gaps allow more air to be carried and drawn in, providing sufficient air for the subsequent formation of foam.

[0055] It should be noted that the inner diameter of the first channel 1004 is larger than that of the second channel 1005, which allows a stepped structure to be formed between the first channel 1004 and the second channel 1005. When installing the guide 2, the guide 2 can be directly pushed into the first channel 1004, and the diversion part 2002 of the guide 2 can abut against the stepped structure. After the mixed liquid is introduced into the first channel 1004, the diversion hole 2004 can distribute the mixed liquid into the liquid inlet chamber 1001. At the same time, the diversion part 2002 can always maintain the contact state with the stepped structure under the action of water pressure, thereby realizing the limiting of the guide 2.

[0056] In this embodiment, the guide member 2 allows the mixture to enter the inlet chamber 1001 through the diversion hole 2004 on the diversion part 2002 when it flows through the inlet channel, further enhancing the dispersion effect of the mixture. At the same time, the design of the guide part 2003 also ensures the formation of the inlet chamber 1001 and improves the foaming effect.

[0057] In one embodiment, the side of the diversion section 2002 is provided with a plurality of diversion holes 2004 spaced apart along its circumference.

[0058] In this embodiment, the multiple diversion holes 2004 arranged circumferentially on the side of the diversion section 2002 allow the mixture to be more evenly dispersed into the liquid inlet chamber 1001, avoiding excessive accumulation of the mixture in local areas. When used in conjunction with the undulating section 2001, it further improves the turbulence effect on the foaming liquid.

[0059] In one embodiment, the system further includes a mixing section 4, a foaming section 5, and a mesh 3. The mixing section 4 has a mixing chamber 4001 and an air inlet 4002. A first end of the air inlet 4002 communicates with the mixing chamber 4001, and a second end of the air inlet 4002 communicates with the outside. A first end of the mixing chamber 4001 communicates with the liquid outlet end of the liquid inlet chamber 1001. The foaming section 5 has a foaming channel 5001, which communicates with the second end of the mixing chamber 4001. The mesh 3 is disposed between the foaming channel 5001 and the second end of the mixing chamber 4001.

[0060] It should be noted that the mixture of water and foaming agent enters the inlet section 1 through the inlet 1002. As it flows through the diversion section 2002 of the guide member 2, the mixture is diverted by the diversion holes 2004 before entering the inlet chamber 1001. As it flows through the undulating section 2001, the flow direction of the mixture is changed to the outer or inner side, and the flow area gradually decreases while the flow velocity increases. Then, at the end of the guide member 2, the flow direction rapidly changes towards the center, converging and ejecting from the outlet. The ejected mixture enters the mixing chamber 4001, where a negative pressure is formed under the action of the high-speed liquid. Air enters the mixing chamber 4001 through the air inlet 4002 and, together with the mixture, impacts the mesh 3, forming bubbles. With continuous bubble accumulation, foam is eventually formed. Finally, the foam flows through the bubble outlet channel 5001 to the bubble outlet and ultimately enters the ceramic water cover.

[0061] Optionally, the mesh 3 can be a steel mesh 3, and multiple meshes 3 can be stacked.

[0062] In this embodiment, the mixing section 4 and the foaming section 5 are designed to further homogenize the mixture after air is introduced, and form a fine foam layer through the mesh 3. This design not only improves the foaming effect but also makes the foam layer more stable and prolongs the foam's duration.

[0063] In one embodiment, the direction from the first end to the second end of the mixing chamber 4001 is parallel to the direction from the inlet end to the outlet end of the liquid inlet chamber 1001, and is perpendicular to the side of the mesh 3.

[0064] In this embodiment, the direction from the first end to the second end of the mixing chamber 4001 is parallel to the direction from the inlet end to the outlet end of the liquid inlet chamber 1001, and perpendicular to the side of the mesh 3. This design ensures that the mixed liquid can be sprayed in a certain direction within the mixing chamber 4001, and after being fully mixed with air, it can directly impact the mesh 3, thus improving the foaming efficiency.

[0065] In one embodiment, a snap-fit ​​block 4003 is provided on the outer wall of the mixing section 4, and a settling groove 5002 is provided on the foaming section 5. The settling groove 5002 is connected to the foaming channel 5001. The second end of the mixing section 4 is located inside the settling groove 5002 and abuts against the outer wall of the mixing section 4 and the inner wall of the settling groove 5002. A snap-fit ​​hole 5003 is provided on the inner wall of the settling groove 5002, and the snap-fit ​​hole 5003 snaps into the snap-fit ​​block 4003.

[0066] Optionally, a through groove may be provided on the outer wall of the settling tank 5002, and the through groove is connected to the snap-fit ​​hole 5003.

[0067] Optionally, a plurality of through slots and snap-fit ​​holes 5003 are provided along the circumference of the mixing section 4. When connecting the mixing section 4 and the foaming section 5, the through slots allow the opening of the recess 5002 to expand, thereby facilitating the snap-fit ​​of the snap-fit ​​block 4003 and the snap-fit ​​hole 5003.

[0068] In this embodiment, the snap-fit ​​block 4003 and snap-fit ​​hole 5003 allow the mixing section 4 and the foaming section 5 to be easily and reliably connected together. This design simplifies the nozzle assembly process, improves production efficiency, and also facilitates nozzle maintenance and replacement.

[0069] In one embodiment, the first end of the foaming channel 5001 is located on the wall of the settling tank 5002 along the direction from the first end to the second end of the mixing chamber 4001, and the mesh 3 is disposed between the wall of the settling tank 5002 along the direction from the first end to the second end of the mixing chamber 4001 and the second end of the mixing chamber 4001.

[0070] In this embodiment, the first end of the foaming channel 5001 is located on the wall of the settling tank 5002 along the direction from the first end to the second end of the mixing chamber 4001, and the mesh 3 is disposed between the wall of the settling tank 5002 along the direction from the first end to the second end of the mixing chamber 4001 and the second end of the mixing chamber 4001. This design achieves the positioning of the mesh 3, which not only simplifies the assembly process of the nozzle and improves production efficiency, but also avoids foam leakage between the mixing section 4 and the foaming section 5.

[0071] According to an embodiment of this application, in another aspect, a bathroom fixture is provided, including a shower head assembly.

[0072] Since bathroom fixtures include shower head assemblies, which have the same effect as shower head assemblies, they will not be described in detail here.

[0073] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A nozzle assembly, characterized in that, include: The liquid inlet section (1) is provided with a liquid inlet cavity (1001). The cavity wall of the liquid inlet cavity (1001) includes an inner cavity wall and an outer cavity wall. The outer cavity wall is arranged around the outer side of the inner cavity wall, and there is a gap between the two to form the liquid inlet cavity (1001). At least one undulating segment (2001) is provided on the inner cavity wall and / or the outer cavity wall, and the undulating segment (2001) extends along the direction from the liquid inlet end to the liquid outlet end of the liquid inlet cavity (1001), so that at least part of the inner cavity of the liquid inlet cavity (1001) gradually narrows along the direction from the liquid inlet end to the liquid outlet end.

2. The nozzle assembly according to claim 1, characterized in that, The undulating segment (2001) is arranged circumferentially along the inner cavity wall and / or the outer cavity wall, and the undulating segment (2001) includes: The first segment and the second segment are distributed along the direction from the inlet end to the outlet end of the liquid inlet cavity (1001). The side of the first segment and the second segment facing the liquid inlet cavity (1001) are obliquely intersecting the direction from the inlet end to the outlet end of the liquid inlet cavity (1001).

3. The nozzle assembly according to claim 1, characterized in that, The liquid inlet (1) is provided with a liquid inlet channel. The first end of the liquid inlet channel along its axial direction is provided with a liquid inlet (1002), and the second end of the liquid inlet channel along its axial direction is provided with a liquid outlet (1003). The liquid inlet cavity (1001) is provided in the liquid inlet channel. The liquid inlet (1002) is connected to the liquid inlet end, and the liquid outlet (1003) is connected to the liquid outlet end. The axis of the liquid inlet channel coincides with that of the liquid inlet cavity (1001).

4. The nozzle assembly according to claim 3, characterized in that, Also includes: The flow guide (2) is provided with a flow splitting part (2002) and a flow guide (2003). The flow splitting part (2002) has a flow splitting hole (2004) on its side. The flow guide (2003) is connected to the side of the flow splitting part (2002). The inlet channel is divided into a first channel (1004) and a second channel (1005) along the direction from its first end to its second end. The inner diameter of the first channel (1004) is larger than the inner diameter of the second channel (1005). The diverting part (2002) is disposed in the first channel (1004) and abuts against the outer wall of the second channel (1005). The guiding part (2003) is disposed in the second channel (1005). The outer wall of the guiding part (2003) and the inner wall of the second channel (1005) form the inlet cavity (1001). The undulating section (2001) is located on the outer wall of the guiding part (2003) and / or the inner wall of the second channel (1005). The diverting hole (2004) connects the first channel (1004) and the inlet cavity (1001).

5. The nozzle assembly according to claim 4, characterized in that, The side of the diversion section (2002) is provided with a plurality of diversion holes (2004) spaced apart along its circumference.

6. The nozzle assembly according to claim 1, characterized in that, Also includes: The mixing section (4) is provided with a mixing chamber (4001) and an air inlet (4002). The first end of the air inlet (4002) is connected to the mixing chamber (4001), and the second end of the air inlet (4002) is connected to the outside. The first end of the mixing chamber (4001) is connected to the liquid outlet of the liquid inlet chamber (1001). The foaming section (5) is provided with a foaming channel (5001), which is connected to the second end of the mixing chamber (4001); The mesh (3) is disposed between the bubble outlet channel (5001) and the second end of the mixing chamber (4001).

7. The nozzle assembly according to claim 6, characterized in that, The direction from the first end to the second end of the mixing chamber (4001) is parallel to the direction from the inlet end to the outlet end of the liquid inlet chamber (1001) and perpendicular to the side of the mesh (3).

8. The nozzle assembly according to claim 6, characterized in that, A snap-fit ​​block (4003) is provided on the outer wall of the mixing part (4), and a settling groove (5002) is provided on the foaming part (5). The settling groove (5002) is connected to the foaming channel (5001). The second end of the mixing part (4) is located inside the settling groove (5002) and abuts against the outer wall of the mixing part (4) and the inner wall of the settling groove (5002). A snap-fit ​​hole (5003) is provided on the inner wall of the settling groove (5002), and the snap-fit ​​hole (5003) snaps into the snap-fit ​​block (4003).

9. The nozzle assembly according to claim 8, characterized in that, The first end of the foaming channel (5001) is located on the wall of the settling tank (5002) along the direction from the first end to the second end of the mixing chamber (4001), and the mesh (3) is disposed between the wall of the settling tank (5002) along the direction from the first end to the second end of the mixing chamber (4001) and the second end of the mixing chamber (4001).

10. A bathroom fixture, characterized in that, include: The nozzle assembly according to any one of claims 1 to 9.

Images