A foam shield jet and toilet
By introducing a flow divider accelerator and a flow divider grid into the foam shield nozzle, multiple dispersed water streams are formed and negative pressure is created in the mixing zone, which solves the problem of the complex structure of existing foam shield nozzles and achieves full mixing of water, foam liquid and air and reduces water flow loss.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN HUIERJIE SANITARY WARE TECH CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-21
AI Technical Summary
The existing foam shield nozzles have a complex structure, resulting in high production and maintenance costs, and insufficient mixing of water, foam liquid, and air.
The system employs a diversion accelerator and diversion grid structure. Multiple dispersed, accelerated water flows are formed through the diversion holes at the end of the diversion accelerator, and negative pressure is created in the mixing zone. Combined with the inclined blades, water flow loss is reduced, achieving thorough mixing of water, foam liquid, and air.
The structure of the foam shield nozzle has been simplified, water flow loss has been reduced, the mixing efficiency of water, foam liquid and air has been improved, and production and maintenance costs have been reduced.
Smart Images
Figure CN224525018U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toilet foam shield technology, specifically a foam shield nozzle and a toilet. Background Technology
[0002] A foam shield nozzle is a component used in smart toilets. Through a specific structure, it mixes and vibrates foaming liquid, water, and air to form foam. Typically, water enters the nozzle assembly through the inlet. As it passes through the inlet area, the water flow becomes turbulent. The accelerated water jet enters the foaming chamber, creating a pressure difference due to the Venturi effect. This pressure difference draws air into the mixing chamber through the air intake. The pressure difference created by the water flow then draws the foaming liquid into the mixing chamber. The turbulent water, foaming liquid, and air fully contact and vibrate within the foaming chamber, forming foam liquid. After the foam liquid stabilizes its flow pattern and velocity in the outlet area, it is ejected, forming a foam shield.
[0003] Existing foam shield nozzles have a relatively complex mixing structure inside the Venturi channel in order to fully mix water, foaming liquid, and air. However, due to the complexity of the structure, they are usually inconvenient to manufacture and install, increasing maintenance costs. Utility Model Content
[0004] The purpose of this utility model is to provide a foam shield nozzle and toilet, which simplifies the structure of the nozzle assembly, reduces water loss, and ensures thorough and effective mixing of water, foam liquid, and air based on foaming technology. To achieve the above objective, this utility model adopts the following technical solution:
[0005] This utility model discloses a foam shield nozzle, comprising: a water inlet channel, a liquid inlet channel, an air inlet channel, a venturi channel, and a liquid outlet channel, wherein the water inlet channel, the venturi channel, and the liquid outlet channel are connected in sequence.
[0006] A diversion accelerator is provided at the connection between the water inlet channel and the venturi channel. The diversion accelerator is equipped with a diversion grid and a corresponding diversion hole at its end.
[0007] The air intake channel is located at the top of the Venturi channel and is connected to the Venturi channel, and the air intake channel is located at the rear end of the split accelerator; the liquid inlet channel is located on one side of the air intake channel and is connected to the air intake channel.
[0008] The Venturi channel is provided with a mixing zone and a foaming zone. The water inlet channel and the air inlet channel are respectively connected to the mixing zone. The diversion hole at the end of the diversion accelerator is located at the junction of the water inlet channel and the mixing zone, so that the water flow is diverted and accelerated in the water inlet channel, and then a negative pressure is formed in the mixing zone.
[0009] Furthermore, the flow divider includes a plurality of blades, which are separated to form flow channel spaces, and the flow channel spaces correspond to the flow divider holes.
[0010] Preferably, the number of diversion holes is 3 to 6, and the total area of the diversion holes is 35 to 65 mm. 2 .
[0011] The blades are inclined from the water inlet end along the direction of the diversion hole, so that the cross-section of the water flowing through the channel space becomes smaller.
[0012] Preferably, the cross-section of the blade is triangular or trapezoidal, with the vertex angle a ≤ 30° at the inlet end of the triangle, or the included angle b ≤ 30° between the two legs of the trapezoid.
[0013] Preferably, the water inlet channel, air inlet channel, and liquid inlet channel are respectively provided with a water inlet, an air inlet, and a liquid inlet, and the outer wall of the water inlet and the liquid inlet is provided with a constriction structure for connecting to a corresponding water pipe or foaming liquid pipe.
[0014] Preferably, the diversion accelerator and the liquid inlet channel are integrally injection molded structures or snap-fit connection structures.
[0015] This utility model also discloses a toilet, wherein the water tank of the toilet is provided with a water supply device, a liquid pump and the foam shield nozzle, the water supply device is connected to the water inlet channel of the foam shield nozzle through a water pipe; the liquid pump is connected to the liquid inlet channel of the foam shield nozzle through a foaming liquid pipe.
[0016] The toilet is provided with a toilet chamber, and a water inlet groove is provided at the top of the toilet chamber. The liquid outlet channel of the foam shield nozzle is connected to the water inlet groove, so that the foam liquid flows into the toilet chamber along the circumference of the water inlet groove.
[0017] After adopting the above technical solution, the present invention has the following effects:
[0018] 1. The foam shield nozzle of this utility model has a simple structure. A diversion accelerator is set between the water inlet channel and the venturi channel. Multiple dispersed and accelerated water flows can be formed through the diversion holes at the end of the diversion accelerator, so that the water, foaming liquid and air are mixed more thoroughly.
[0019] 2. The flow divider grid of the flow divider accelerator in the foam shield nozzle of this utility model has a certain slope, which spreads the water flow in all directions, and the slope direction is consistent with the water flow direction, which can reduce water flow loss.
[0020] 3. The flow divider accelerator in the foam shield nozzle of this utility model uses the slope of the flow divider grid itself to make the cross-section of the water flow through the flow channel space change from large to small, which can accelerate the speed of the water flow. The faster the water flow, the more obvious the Venturi effect, so that the water, foaming liquid and air are fully and effectively mixed. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the foam shield nozzle of this utility model.
[0022] Figure 2 This is a top view of the foam shield nozzle of this utility model.
[0023] Figure 3 for Figure 2 AA-direction cross-sectional view.
[0024] Figure 4 This is a diagram showing the generation path of foam liquid in the foam shield nozzle of this utility model.
[0025] Figure 5 This is a three-dimensional structural diagram of the flow divider accelerator in the foam shield nozzle of this utility model.
[0026] Figure 6 This is an elevation view of the water inlet end of the foam shield nozzle of this utility model.
[0027] Figure 7 for Figure 6 BB-direction cross-sectional view.
[0028] Figure 8 This is a schematic diagram showing the flow channel cross-section decreasing in size in the shunt accelerator of this utility model.
[0029] Figure 9 This is a three-dimensional structural diagram of the toilet of this utility model.
[0030] Main component symbols:
[0031] 1: Foam shield nozzle, 11: Water inlet channel, 111: Water inlet, 12: Liquid inlet channel, 121: Liquid inlet, 13: Air inlet channel, 131: Air inlet, 14: Venturi channel, 141: Mixing zone, 142: Foaming zone, 15: Flow divider accelerator, 151: Flow divider grid, 152: Flow divider hole, 16: Liquid outlet channel, 2: Water supply device, 3: Liquid pump, 4: Toilet chamber, 41: Water inlet tank. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0033] like Figures 1 to 3As shown, this utility model discloses a foam shield nozzle, including: a water inlet channel 11, a liquid inlet channel 12, an air inlet channel 13, a venturi channel 14, and a liquid outlet channel 16, which are connected in sequence.
[0034] Combination Figure 5 As shown, a flow divider accelerator 15 is provided at the connection between the water inlet channel 11 and the venturi channel 14. The flow divider accelerator 15 is provided with a flow divider grid 151 and a corresponding flow divider hole 152 at its end. Multiple dispersed and accelerated water flows can be formed through the flow divider hole 152 at the end of the flow divider accelerator 15, so that the water, foaming liquid and air are mixed more thoroughly.
[0035] The air intake channel 12 is located at the top of and connected to the Venturi channel 14, and is situated at the rear end of the flow divider accelerator 15. The liquid inlet channel 13 is located on one side of the air intake channel 12 and is connected to it. In this embodiment, the air intake channel 12 is perpendicular to the Venturi channel 14, and the liquid inlet channel 13 is perpendicular to one side of the air intake channel 12. The liquid inlet channel 13 is parallel to the Venturi channel 14 and the water inlet channel 11, allowing water and foaming liquid to enter the foam shield nozzle from the same direction, thus improving the overall integrity of the foam shield nozzle.
[0036] like Figure 4 As shown, in this embodiment, the Venturi channel 14 is provided with a mixing zone 141 and a foaming zone 142. The water inlet channel 11 and the air inlet channel 12 are respectively connected to the mixing zone 141, and the diversion hole 152 at the end of the diversion accelerator 15 is located at the junction of the water inlet channel 11 and the mixing zone 141, so that after the water flow is diverted and accelerated in the water inlet channel 11, a negative pressure is formed in the mixing zone 141. Then, water, air and foaming liquid foam in the foaming zone 142 to form foam liquid, which is discharged through the liquid outlet channel 16.
[0037] When the water flows through the flow divider accelerator 15 and creates a negative pressure in the mixing zone 141, external air is drawn into the mixing zone 141 through the air intake channel 12. At this time, since the liquid inlet channel 13 is connected to the air intake channel 12, the foaming liquid enters the mixing zone 141 under the influence of the air, preventing the foaming liquid from flowing back. At the same time, the air intake channel 12 also serves as an anti-siphon function.
[0038] Secondly, combining Figures 6 to 8As shown, the flow divider 151 includes several blades, which are separated to form flow channel spaces, corresponding to the flow divider holes 152. The blades are inclined from the water inlet end along the direction of the flow divider holes 152, diffusing the water flow in all directions, and the inclination direction is consistent with the water flow direction, which can reduce water flow loss. At the same time, by being inclined, the cross-section of the water flow through the flow channel space changes from large to small, which can accelerate the water flow speed. The faster the water flow speed, the more obvious the Venturi effect, which can make the water, foaming liquid and air mix thoroughly and effectively.
[0039] In this embodiment, the flow divider 151 is provided with four blades, and correspondingly, four flow divider holes 152 are provided. The cross-section of the blades is triangular, the apex angle of the triangular inlet end is α, where α = 10°, and the total area of the four flow divider holes is 45 mm². 2 In other embodiments, when the cross-section of the blade is triangular, the apex angle α at the triangular inlet end is ≤30°. Furthermore, in some embodiments, the cross-section of the blade can also be trapezoidal, in which case the included angle between the two legs of the trapezoid is β, and β ≤30°. Meanwhile, depending on the number of blades on the diversion grille 151, the number of diversion holes 152 is 3 to 6, and the total area of the diversion holes 152 is 35 to 65 mm². 2 .
[0040] In addition, the water inlet channel 11, air inlet channel 12, and liquid inlet channel 13 are respectively provided with a water inlet 111, an air inlet 121, and a liquid inlet 131. The outer walls of the water inlet 111 and the liquid inlet 131 are provided with a constriction structure for connecting to corresponding water pipes or foaming liquid pipes. Furthermore, the flow divider accelerator 15 and the liquid inlet channel 11 are integrally injection molded structures. In some other embodiments, the flow divider accelerator 15 and the liquid inlet channel 11 can also be a snap-fit connection structure.
[0041] like Figure 9 As shown, this utility model also discloses a toilet, in which a water supply device 2, a liquid pump 3 and a foam shield nozzle 1 are provided inside the water tank. The water supply device 2 is connected to the water inlet channel 11 of the foam shield nozzle 1 through a water pipe to pump water from the water tank into the foam shield nozzle 1. The liquid pump 3 is connected to the liquid inlet channel 13 of the foam shield nozzle 1 through a foaming liquid pipe to pump special foaming liquid into the foam shield nozzle 1.
[0042] The toilet is equipped with a toilet chamber 4, and a water inlet groove 41 is provided on the top of the toilet chamber 4. The liquid outlet channel 16 of the foam shield nozzle 1 is connected to the water inlet groove 41, so that the foam liquid flows into the toilet chamber 4 along the circumference of the water inlet groove 41.
[0043] The above description is only a preferred embodiment of the present utility model. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A foam shield nozzle, characterized in that, include: The system includes a water inlet channel, a liquid inlet channel, an air inlet channel, a venturi channel, and a liquid outlet channel, which are connected in sequence. A diversion accelerator is provided at the connection between the water inlet channel and the venturi channel. The diversion accelerator is provided with a diversion grid and a corresponding diversion hole at its end. The air intake channel is located at the top of the Venturi channel and is connected to the Venturi channel, and the air intake channel is located at the rear end of the split accelerator; the liquid inlet channel is located on one side of the air intake channel and is connected to the air intake channel.
2. The foam shield nozzle as described in claim 1, characterized in that: The Venturi channel is provided with a mixing zone and a foaming zone. The water inlet channel and the air inlet channel are respectively connected to the mixing zone. The flow divider at the end of the flow divider is located at the junction of the water inlet channel and the mixing zone, so that the water flow is divided and accelerated in the water inlet channel, and then a negative pressure is formed in the mixing zone.
3. A foam shield nozzle as described in claim 1, characterized in that: The flow divider includes a plurality of blades, which are separated to form flow channel spaces, and the flow channel spaces correspond to the flow divider holes.
4. A foam shield nozzle as described in claim 3, characterized in that: The number of diversion holes is 3 to 6, and the total area of the diversion holes is 35 to 65 mm. 2 .
5. A foam shield nozzle as described in claim 3, characterized in that: The blades are inclined from the water inlet end along the direction of the diversion hole, so that the cross-section of the water flowing through the channel space changes from large to small.
6. A foam shield nozzle as described in claim 5, characterized in that: The cross-section of the blade is triangular or trapezoidal, with the vertex angle a ≤ 30° at the inlet end of the triangle, or the included angle b ≤ 30° between the two legs of the trapezoid.
7. A foam shield nozzle as described in claim 1, characterized in that: The water inlet channel, air inlet channel, and liquid inlet channel are respectively provided with water inlet, air inlet, and liquid inlet. The outer walls of the water inlet and liquid inlet are provided with a constriction structure for connecting to corresponding water pipes or foaming liquid pipes.
8. A foam shield nozzle as described in any one of claims 1-7, characterized in that: The shunt accelerator and the liquid inlet channel are integrally injection molded or connected by a snap-fit structure.
9. A toilet, characterized in that: The toilet's water tank is equipped with a water supply device, a liquid pump, and a foam shield nozzle as described in any one of claims 1-8. The water supply device is connected to the water inlet channel of the foam shield nozzle via a water pipe; the liquid pump is connected to the liquid inlet channel of the foam shield nozzle via a foaming liquid pipe.
10. A toilet as described in claim 9, characterized in that: The toilet is provided with a toilet chamber, and a water inlet groove is provided at the top of the toilet chamber. The liquid outlet channel of the foam shield nozzle is connected to the water inlet groove, so that the foam liquid flows into the toilet chamber along the circumference of the water inlet groove.