Foaming device

Abstract

The utility model discloses a foaming device, which relates to the technical field of intelligent bathroom equipment and comprises a water inlet pipe connected with tap water, a foaming agent container and a foam outlet pipe, the water inlet pipe is connected with a foam maker, the foam maker is connected with the foam outlet pipe, and an outlet of the foaming agent container is connected with the foam maker. Compared with the prior art, the problems that an existing foaming device is high in energy consumption, large in noise, poor in durability and slow in foaming can be solved.

Description

Technical Field

[0001] This utility model relates to the field of intelligent bathroom equipment technology, and in particular to an automatic foaming device for intelligent bathroom equipment that requires foaming. Background Technology

[0002] With the emergence of smart bathroom appliances, especially smart toilets and shower systems, in addition to automatic flushing and cleaning, automatic foaming devices have been added to automatically fill the toilet bowl with foam for splash prevention and antibacterial purposes. Existing foaming devices typically use two electric pumps. One is connected to the tap water inlet pipe and the foaming agent container outlet to extract the foaming agent. After the foaming agent mixes with water, another electric pump is connected to the foam outlet pipe to provide power for blowing foam into the toilet bowl or shower head. Using two electric pumps results in high energy consumption and significant noise. Furthermore, controlling the extraction of the foaming agent with electric pumps requires frequent starts and stops due to the small amount of foaming agent needed for proper foaming, leading to poor pump durability. Additionally, foam production is relatively slow, typically taking 7-8 seconds. Utility Model Content

[0003] The problem to be solved by this utility model is to provide a foaming device to solve the problems of high energy consumption, high noise, poor durability and slow foaming of existing foaming devices.

[0004] To solve the above problems, the technical solution of this utility model is as follows: This foaming device includes an inlet pipe connected to tap water, a foaming agent container, and a foam outlet pipe. The inlet pipe is connected to a foamer, the foamer is connected to the foam outlet pipe, and the outlet of the foaming agent container is connected to the foamer.

[0005] A more specific embodiment of the above technical solution may be: the foamer includes a Venturi tube connecting the water inlet pipe and the foam outlet pipe, the inlet and outlet of the Venturi tube on the left and right sides are respectively connected to the water inlet pipe and the foam outlet pipe, the liquid inlet of the Venturi tube is connected to the outlet of the foaming agent container through a connecting pipe, the outlet of the foaming agent container is provided with an air inlet pipe that penetrates the surface of the foaming agent liquid, and the air inlet pipe is provided with a liquid inlet for the foaming agent to flow in above the outlet of the foaming agent container.

[0006] A more specific embodiment of the above technical solution is as follows: the foamer includes a Venturi tube connecting the inlet pipe and the outlet pipe. The Venturi tube includes an inner tube and an outer tube nested within each other. The middle section of the outer tube has a liquid inlet, and the inner diameter gradually decreases from the middle section to the outlet section to form a transition section. The inlet section of the inner tube is located outside the outer tube. The inner diameter of the portion of the inner tube inside the outer tube gradually decreases and ends before the outlet section of the outer tube. A connecting block with four axial spiral water holes is embedded in the inner tube at the inlet section. The inlet section of the inner tube is connected to the inlet pipe, and the outlet section of the outer tube is connected to the outlet pipe. The liquid inlet of the Venturi tube is connected to the outlet of the foaming agent container through a connecting pipe. An air inlet pipe is provided on the outlet of the foaming agent container, penetrating the surface of the foaming agent liquid. The air inlet pipe has a liquid inlet for the foaming agent to flow in above the outlet of the foaming agent container.

[0007] Furthermore, one side of the connecting pipe is provided with an adjusting screw that extends into the wall of the connecting pipe for adjusting the amount of liquid passing through the connecting pipe.

[0008] Furthermore: the foaming agent container is a box.

[0009] A more specific embodiment of the above technical solution is as follows: the foamer includes a cylinder with one end connected to the outlet of the foaming agent container and the other end connected to the foam outlet. A gear pump is axially arranged inside the cylinder from the outlet of the foaming agent container. The gear pump is connected to an impeller through a reducer. The cylinder is radially connected to the water inlet pipe on one side of the impeller.

[0010] Furthermore, the foaming agent container is a cylindrical body with the same outer diameter as the outer diameter of the cylinder.

[0011] Furthermore, the water inlet pipe is equipped with a solenoid valve, which is connected to a DC power supply via a touch button.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0013] This foaming device uses a pressure difference generated by a venturi tube between the inlet and outlet pipes of tap water to agitate the foaming agent and produce foam. Alternatively, it uses a gear pump with a reducer-connected impeller to agitate the foaming agent and produce foam. This eliminates at least one electric pump, saving energy and manufacturing costs, and reducing noise to almost nothing (the venturi method is noiseless). Furthermore, because the foaming principle relies on water flow agitation of the foaming liquid, the foaming speed is fast and uniform. The foaming liquid directly enters the agitated water flow and is directly connected to the outlet pipe, optimizing and simplifying the entire foaming and foaming process. Therefore, the foaming time is shortened from 7-8 seconds with the previous dual-electric-pump foaming device to only 4 seconds with this device. After foaming, the device can be connected to smart kitchen and bathroom appliances such as toilets, shower heads, and dishwasher shower heads. It has a wide range of applications, low cost, and is suitable for widespread adoption. Attached Figure Description

[0014] Figure 1 This is a front view of Embodiment 1 of this utility model;

[0015] Figure 2 yes Figure 1 AA section view;

[0016] Figure 3 This is a bottom-view axonometric drawing of Embodiment 1 of this utility model;

[0017] Figure 4 This is the main view axonometric drawing of Embodiment 1 of this utility model;

[0018] Figure 5 This is a cross-sectional view of a Venturi tube according to Embodiment 1 of this utility model;

[0019] Figure 6 This is a cross-sectional view of the second Venturi tube according to Embodiment 1 of this utility model;

[0020] Figure 7 This is an isometric view of the connecting block and spiral water hole of the Venturi tube II in Embodiment 1 of this utility model;

[0021] Figure 8 This is a front view of Embodiment 2 of this utility model;

[0022] Figure 9 yes Figure 6 BB cross-sectional view;

[0023] Figure 10 This is a top view of Embodiment 2 of this utility model;

[0024] The diagram shows the following components: 1. Inlet pipe; 2. Solenoid valve; 3. Touch button; 4. DC power supply; 5. Housing; 6. Bubble outlet pipe; 7. Venturi tube; 7-1. Inlet body; 7-2. Outlet body; 7-3. Suction pipe; 7-4. Suction port; 7-11. Inner pipe; 7-12. Outer pipe; 7-13. Spiral water hole; 7-14. Connecting block; 8. Connecting pipe; 9. Adjusting screw; 10. Shower head; 11. Cylinder body; 12. Cylinder; 13. Gear pump; 14. Reducer; 15. Impeller; 20. Air inlet pipe; 21. Liquid inlet. Detailed Implementation

[0025] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0026] Example 1: As Figures 1 to 7 The foaming device shown includes an inlet pipe 1 connected to tap water, a foaming agent container, a foaming pipe 6, an inlet pipe 1 connected to a foamer, a foamer connected to the foaming pipe 6, an outlet of the foaming agent container connected to the foamer, and a foaming pipe connected to a shower head 10, which can increase the foaming effect.

[0027] The foamer includes a venturi tube 7 that connects the water inlet pipe 1 and the foam outlet pipe 6. The inlets and outlets on the left and right sides of the venturi tube 7 are connected to the water inlet pipe 1 and the foam outlet pipe 6, respectively. The liquid inlet 7-4 of the venturi tube is connected to the outlet of the foaming agent container through a connecting pipe 8. An air inlet pipe 20 is provided on the outlet of the foaming agent container, which penetrates the surface of the foaming agent liquid. An inlet 21 for the foaming agent to flow in is provided above the outlet of the foaming agent container on the air inlet pipe. In order to minimize noise and avoid the sound generated by the air inlet pipe, a silencer can be installed on the air inlet pipe.

[0028] like Figure 5 The Venturi tube 7 here includes a vertically installed suction pipe 7-3 for sucking in liquid. The suction pipe is connected to an inlet body 7-1 and an outlet body 7-2 on the left and right sides. Both the inlet body 7-1 and the outlet body 7-2 are conical and have a smaller diameter at the part connected to the suction inlet. The average inner diameter of the inlet body is smaller than that of the outlet body.

[0029] The Venturi tube 7 can also have the following structures, such as... Figure 6 , Figure 7As shown, the Venturi tube 7 includes an inner tube 7-11 and an outer tube 7-12 nested together. The outer tube has a liquid inlet 7-4 in its middle section, and its inner diameter gradually decreases from the middle section to the outlet section, forming a transition section. The inlet section of the inner tube 7-11 is located outside the outer tube 7-12. The inner diameter of the portion of the inner tube 7-11 inside the outer tube gradually decreases and ends before the outlet section of the outer tube. A connecting block 7-14 with four axial spiral water holes 7-13 is embedded in the inner tube 7-11 at the inlet section. The inlet section is connected to the water inlet pipe 1, and the outlet section of the outer pipe 7-12 is connected to the bubble outlet pipe 6. Water enters the inner pipe and is pressurized by four axial spiral water holes 7-13. It exits at the end of the transition section before the outlet section of the outer pipe and mixes with the foaming liquid entering from the suction port 7-4. A mixing chamber of water and foaming liquid is formed inside the outlet section of the outer pipe 7-12. The mixture is formed by the pressure and foam is generated and exits from the bubble outlet pipe 6. Under the spray pressure of the shower head 10, more uniform and dense foam is sprayed out.

[0030] One side of the connecting pipe 8 is equipped with an adjusting screw 9 that extends into the wall of the connecting pipe to adjust the amount of liquid flowing through it. The foaming agent container here is a box 5 for holding foaming liquid. The outlet of the box 5 is at the bottom, and the liquid inlet 7-4 is connected to the venturi tube.

[0031] The Venturi tube utilizes Bernoulli's principle, a fundamental principle in hydraulics before the establishment of the continuous medium theory equations in fluid mechanics. Its essence is the conservation of mechanical energy in fluids. Bernoulli's principle states that in an ideal fluid (i.e., an incompressible, inviscid fluid), an increase in velocity leads to a decrease in static pressure, and vice versa. This means that under steady fluid flow conditions, the sum of the fluid's kinetic energy, gravitational potential energy, and pressure potential energy remains constant. For an ideal barotropic fluid undergoing steady motion under the influence of potential body forces, the equation of motion (i.e., the Euler equation) is integrated along streamlines to express the conservation of mechanical energy. For an incompressible homogeneous fluid in a gravitational field, the equation is p + ρgh + (1 / 2) × ρv^2 = c, where p, ρ, and v are the fluid's pressure, density, and velocity, respectively; h is the vertical height; g is the gravitational acceleration; and c is a constant. The terms in the above equation represent the pressure energy p, gravitational potential energy ρgh, and kinetic energy (1 / 2) × ρv^2 per unit volume of fluid, respectively. During flow along streamlines, the sum remains constant, meaning total energy is conserved. However, the total energy (i.e., the constant value in the equation) may differ between streamlines. For gases, gravity can be neglected, and the equation simplifies to p + (1 / 2) × ρv^2 = constant (p0), where each term represents static pressure, dynamic pressure, and total pressure, respectively. Clearly, as velocity increases during flow, pressure decreases; as velocity decreases, pressure increases; and when velocity drops to zero, pressure reaches its maximum (theoretically equal to total pressure). The lift generated by an aircraft wing is due to the lower velocity and higher pressure on the lower wing surface, and the higher velocity and lower pressure on the upper wing surface, resulting in an upward force. Based on this equation, the velocity can be determined by measuring the total pressure and static pressure of the fluid, which is the principle behind Pitot tube speed measurement. In irrotational flow, the same result can be obtained by integrating the Euler equation under irrotational conditions, but with different meanings. In this case, the constant in the formula remains unchanged throughout the flow field, indicating that the fluid on each streamline has the same total energy. The equation applies to any two points in the entire flow field. In viscous flow, viscous friction consumes mechanical energy and generates heat. Mechanical energy is not conserved. When applying Bernoulli's equation, a mechanical energy loss term should be added. This foaming device uses the pressure difference generated by a Venturi tube between the inlet and outlet pipes of tap water to agitate the foaming agent and generate foam. This reduces the need for two electric pumps, saving energy consumption and manufacturing and operating costs, and reducing noise to zero. One side of the connecting pipe 8 is equipped with an adjusting screw 9 that extends into the wall of the connecting pipe to adjust the amount of liquid flowing through the connecting pipe 6. The foaming liquid output can be adjusted according to the water flow rate.

[0032] The water inlet pipe 1 is equipped with a solenoid valve 2. The solenoid valve 2 is connected to a DC power supply 4 via a touch button 3. The solenoid valve can automatically control whether water enters the pipe, while the touch button 3 can be manually controlled by touching it.

[0033] Example 2: Figures 8 to 10The foaming device shown includes an inlet pipe 1 connected to tap water, a foaming agent container, a foaming pipe 6, an inlet pipe 1 connected to a foamer, a foamer connected to the foaming pipe 6, an outlet of the foaming agent container connected to the foamer, and a foaming pipe connected to a shower head 10.

[0034] The foaming device includes a cylinder 12 with one end connected to the outlet of a foaming agent container and the other end connected to a foam outlet. A gear pump 13 is axially arranged inside the cylinder 12, extending from the outlet of the foaming agent container. The gear pump 13 is connected to an impeller 15 via a reducer 14. A water inlet pipe 1 is radially connected to one side of the cylinder 12 near the impeller 15. The foaming agent container is a cylindrical body 11 containing the foaming liquid, and its outer diameter is the same as that of the cylinder 12.

[0035] This foaming device uses a gear pump connected to a reducer via an impeller to agitate the foaming agent between the inlet and outlet pipes of tap water to generate foam. This reduces the need for an electric pump, saving energy and manufacturing and operating costs, and significantly reducing noise. Furthermore, the impeller agitation of the foaming liquid results in fast and uniform foaming.

[0036] The water inlet pipe 1 is equipped with a solenoid valve 2. The solenoid valve 2 is connected to a DC power supply 4 via a touch button 3. The solenoid valve can automatically control whether water enters the pipe, while the touch button 3 can be manually controlled by touching it.

[0037] This foaming device uses the pressure difference generated by the Venturi tube 7 between the inlet and outlet pipes of tap water to agitate the foaming agent and generate foam, or uses a gear pump 13 connected to an impeller 15 via a reducer 14 to agitate the foaming agent and generate foam. This reduces the number of electric pumps by at least one, saving energy and manufacturing and usage costs, and reducing noise to almost nothing (the method using the Venturi tube is noiseless). Moreover, since the foaming principle is based on the agitation of the foaming liquid by the water flow, the foaming speed is fast and the foaming is uniform. Furthermore, the foaming liquid directly enters the agitated water flow and is directly connected to the outlet pipe. The entire foaming and foaming process is optimized and simplified, resulting in a shorter foaming time. The foaming time has been reduced from 7-8 seconds with the original foaming device using dual electric pumps to only 4 seconds with this foaming device. After foaming, this foaming device can be connected to smart kitchen and bathroom appliances such as toilets, shower heads, and dishwashers. It can also be used to foam car wash liquid. It has high foaming efficiency, wide applicability, and low cost, making it suitable for widespread promotion.

Claims

1. A foaming device comprising a water inlet pipe connected to a water supply, a container for a foaming agent, and a foam outlet pipe, characterised in that: The water inlet pipe is connected with a foaming device, the foaming device is connected with the water outlet pipe, and the outlet of the foaming agent container is connected with the foaming device.

2. The foaming device of claim 1, wherein: The foaming device comprises a Venturi tube connected with the water inlet pipe and the water outlet pipe, the inlet and outlet of the Venturi tube on the left and right sides are connected with the water inlet pipe and the water outlet pipe respectively, the liquid suction inlet of the Venturi tube is connected with the outlet of the foaming agent container through a connecting pipe, the outlet of the foaming agent container is provided with an air inlet pipe penetrating the liquid level of the foaming agent, and the air inlet pipe is provided with a liquid inlet above the outlet of the foaming agent container for the flow of the foaming agent.

3. The foaming device of claim 1, wherein: The foaming device comprises a Venturi tube connected with the water inlet pipe and the water outlet pipe, the Venturi tube comprises a nested inner tube and an outer tube, the middle section of the outer tube is provided with a liquid suction inlet, the inner diameter of the middle section to the outlet section gradually decreases to form a transition section, the inlet section of the inner tube is arranged outside the outer tube, the inner diameter of the part of the inner tube in the outer tube gradually decreases and stops before the outlet section of the outer tube, a connecting circular block with four axial spiral water holes is embedded in the inner tube at the position of the inlet section, the inlet section of the inner tube is connected with the water inlet pipe, the outlet section of the outer tube is connected with the water outlet pipe, the liquid suction inlet of the Venturi tube is connected with the outlet of the foaming agent container through a connecting pipe, the outlet of the foaming agent container is provided with an air inlet pipe penetrating the liquid level of the foaming agent, and the air inlet pipe is provided with a liquid inlet above the outlet of the foaming agent container for the flow of the foaming agent.

4. The foaming device of claim 2, wherein: One side of the connecting pipe is provided with an adjusting screw for adjusting the amount of liquid passing through the connecting pipe.

5. The foaming device of claim 4, wherein: The foaming agent container is a box body.

6. The foaming device of claim 1, wherein: The foaming device comprises a cylindrical tube connected with the outlet of the foaming agent container at one end and connected with the water outlet pipe at the other end, a gear pump is arranged in the cylindrical tube in an axial direction from the outlet of the foaming agent container, the gear pump is connected with a vane wheel through a speed reducer, and the water inlet pipe is connected with the cylindrical tube in a radial direction on one side of the vane wheel.

7. The foaming device of claim 6, wherein: The foaming agent container is a cylindrical body with the same outer diameter as the cylindrical tube.

8. A foaming device according to any one of claims 1 to 7, characterized in that: The water inlet pipe is provided with a solenoid valve, and the solenoid valve is connected with a direct current power source through a touch button.

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