Water outlet pipe of water toothpick and tooth flushing equipment
By combining a segmented water channel design with a porous, tapered expansion foaming core, the problems of large size and complex structure of dental irrigators have been solved, achieving efficient generation of microbubbles and portable use, reducing production costs and improving maintainability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FUJI KEIKI SCIENCE & TECHNOLOGY CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-01
AI Technical Summary
The existing motor drive structure of dental irrigators results in a large size and complex structure, which cannot meet the needs of easy daily use and portability in the home.
It adopts a segmented water channel design, with built-in porous foam core and conical expanded foam core, which forms microbubbles by increasing flow rate and turbulence, simplifying the structure to suit portable devices.
It achieves efficient generation and uniform distribution of microbubbles, simplifies structural design, is suitable for portable use, reduces production costs, and improves maintainability.
Smart Images
Figure CN224179819U_ABST
Abstract
Description
Water pipe for dental floss and dental rinsing equipment Technical Field
[0001] This utility model belongs to the technical field of dental rinsing equipment, specifically relating to the water outlet pipe of a dental irrigator and dental rinsing equipment. Background Technology
[0002] A dental irrigator is an oral care tool that cleans teeth and gums using high-pressure water flow. Its main structure includes a water tank, a water outlet pipe, and a miniature water pump. To improve oral cleaning efficiency, some dental irrigators use sparkling water to clean teeth and between teeth. For example, patent CN219424135U_Sparkling Water Preparation Device and Dental Irrigator discloses a gas-liquid mixing mechanism and a pressurized mixing mechanism for preparing sparkling water.
[0003] However, while existing water flossers can produce sparkling water, their motor-driven structures still suffer from technical bottlenecks such as large axial space occupation and high structural complexity, resulting in a large size that cannot meet the needs of easy daily use at home or portability for travel and work. Summary of the Invention
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a water outlet pipe for a dental irrigator and a dental rinsing device to solve the technical bottlenecks of the existing technology, which are large in size and complex in structure, resulting in a large size that cannot meet the needs of easy daily use at home and portability for travel and work.
[0005] One embodiment of this utility model provides a water outlet pipe for a dental irrigator, comprising a main pipe body and a microbubble generating structure:
[0006] The main body of the water pipe is equipped with a bubble generating section and a flow stabilizing section in sequence.
[0007] The microbubble generating structure includes a porous foaming core and an expanding foaming core; the porous foaming core is disposed at the water inlet end of the water channel of the bubble generating section, and is used to increase the flow velocity of the water flowing through the water channel of the bubble generating section and generate bubbles.
[0008] The expanded foaming core is disposed at the outlet end of the water channel of the bubble generating section, and is used to make the water flowing through the water channel of the bubble generating section form turbulence and generate micro bubbles.
[0009] The steady flow section waterway is located on the outlet side of the expanded foam core.
[0010] In one embodiment of this utility model, the porous foam core is provided with a plurality of first water passage holes arranged in an axial array; the expanded foam core is provided with a second water passage hole arranged in an axial array, the second water passage hole being a tapered hole with a gradually widening inner wall.
[0011] In one embodiment of this utility model, the first water passage hole is set to 2-6, and the diameter of the first water passage hole is set to 0.8-1.2mm.
[0012] In one embodiment of this utility model, the small end of the conical hole faces the first water passage, and the large end of the conical hole faces the water inlet direction of the steady flow section.
[0013] In one embodiment of this utility model, the small end diameter of the tapered hole is set to 1-1.5 mm;
[0014] And / or, the large end diameter of the tapered hole is set to 1.6-2.5 mm.
[0015] In one embodiment of this utility model, the outer surfaces of the porous foam core and the expanded foam core are covered with an elastic layer so that the porous foam core and the expanded foam core are interference-fitted into the water channel of the bubble generating section through the elastic layer.
[0016] In one embodiment of this utility model, the elastic layer is any one of rubber, TPE, or silicone.
[0017] In one embodiment of this utility model, the microbubble generating structure is integrally formed with the water pipe body, so that the porous foaming core and the expanded foaming core are fixedly connected to the inner wall of the water pipe body.
[0018] In one embodiment of this utility model, the inner diameter of the steady flow section water channel is smaller than the inner diameter of the bubble generating section water channel.
[0019] In one embodiment of this utility model, the water pipe body further includes a nozzle water path, which is configured as a tapered pipe with a gradually decreasing inner diameter, and the inner diameter of the water pipe body at the outlet is greater than the minimum inner diameter of the nozzle water path, so as to increase the coverage area of the bubble water.
[0020] One embodiment of this utility model also discloses a dental rinsing device, including a water outlet pipe of a dental rinsing device as described in any of the above embodiments.
[0021] The water outlet pipe of the dental irrigator provided by this utility model can achieve the following technical effects:
[0022] 1. The water outlet pipe of the water flosser adopts a segmented water circuit design, with built-in porous foaming core and conical expanding foaming core. The porous foaming core is located at the water inlet end, which increases the flow rate and enhances the gas-liquid mixing efficiency, thereby generating bubbles. The expanding foaming core creates turbulence at the water outlet end, which can promote the breakup and uniform distribution of bubbles, thereby generating finer microbubbles. The microbubble generation structure is compact. By integrating the porous and expanding foaming cores into the water outlet pipe of the water flosser, the water outlet pipe design is simplified and suitable for portable devices.
[0023] 2. The porous foam core and the tapered expanded foam core are assembled with an interference fit through an elastic layer. The elastic layer can fill the gap between the core and the inner wall of the water channel to ensure a tight fit. Secondly, the interference fit through the elastic layer makes the core easier to install and disassemble, and easier to clean or replace, thereby improving the maintainability of the product. In addition, it simplifies the manufacturing process because it does not require a complex fixing structure, thus reducing production costs.
[0024] 3. The steady flow section helps stabilize the water flow, reduce pressure fluctuations, and ensure a continuous and stable output of bubble water; and the conical contraction of the nozzle water path can increase the water flow speed. Combined with the increase in the inner diameter of the water outlet of the water pipe body at the outlet relative to the end of the nozzle water path, it can disperse the bubble water and cover a larger cleaning area. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0026] Figure 1 shows a schematic diagram of the water outlet pipe of the dental irrigator of this utility model;
[0027] Figure 2 shows a side view of the water outlet pipe of the dental irrigator of this utility model;
[0028] Figure 3 shows a cross-sectional view of the water outlet pipe of the dental irrigator of this utility model.
[0029] Figure 4 shows an enlarged structural diagram of point A in Figure 3.
[0030] The symbols in the attached image are explained as follows:
[0031] 1-Water pipe body; 11-Water circuit for bubble generation; 12-Water circuit for steady flow; 13-Water circuit for nozzle;
[0032] 2-Porous foam core component; 21-First water passage hole;
[0033] 3-Expanded foam core; 31-Second water passage hole;
[0034] 4-Elastic layer. Detailed Implementation
[0035] The technical embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0036] Please refer to Figures 1-4. One embodiment of this utility model provides a water outlet pipe for a dental irrigator, including a water pipe body 1 and a microbubble generating structure:
[0037] The water pipe body 1 is provided with a bubble generating section water passage 11 and a flow stabilizing section water passage 12 in sequence inside the main body of the water pipe;
[0038] The microbubble generating structure includes a porous foaming core 2 and an expanding foaming core 3; the porous foaming core 2 is disposed at the water inlet end of the bubble generating section water channel 11, and is used to increase the flow velocity of the water flowing through the bubble generating section water channel 11 and generate bubbles.
[0039] The expanded foaming core 3 is disposed at the outlet end of the bubble generating section water channel 11, and is used to make the water flowing through the bubble generating section water channel 11 form turbulence and generate micro bubbles.
[0040] The steady flow section water channel 12 is located on the water outlet side of the expanded foam core 3.
[0041] Understandably, the water outlet pipe of the water flosser in this embodiment adopts a segmented water path design, with a built-in porous foaming core 2 and a conical expanding foaming core 3. The porous foaming core 2 is located at the water inlet end, which increases the flow rate and enhances the gas-liquid mixing efficiency, thereby generating bubbles. The expanding foaming core 3 forms turbulence at the water outlet end, which can promote the breakup and uniform distribution of bubbles, thereby generating finer microbubbles. The microbubble generation structure is compact. By integrating the porous and expanding foaming core 3 into the water outlet pipe of the water flosser, the water outlet pipe design is simplified and suitable for portable devices.
[0042] In one embodiment of the present invention, the porous foam core 2 is provided with a plurality of first water passage holes 21 arranged in an axial array, and the expanded foam core 3 is provided with a second water passage hole 31 arranged in an axial array. The second water passage hole 31 is configured as a tapered hole with a gradually widening inner wall.
[0043] Understandably, the axial array of water passages in the porous foam core 2 promotes cavitation by increasing the water flow velocity. According to Bernoulli's principle, when water flows through the small holes, the flow velocity increases and the pressure decreases, causing the gas dissolved in the water to precipitate and form bubbles. At the same time, the porous design can disperse the water flow, forming multiple high-speed jets, increasing the gas-liquid contact area and promoting mixing. The structure of the conical holes utilizes the Venturi effect. When the water flows through the narrow section and enters the expansion section, the flow velocity decreases and the pressure rises. This pressure change causes the bubbles to break up and become finer, while the enhanced turbulence helps to achieve a uniform distribution of the bubbles.
[0044] Therefore, in this embodiment, a porous structure is used to accelerate water flow and generate initial bubbles. Then, a conical expansion section is used to refine the bubbles using turbulent shear and pressure changes, forming microbubbles. This design can improve the bubble generation efficiency and uniformity.
[0045] In one embodiment of this utility model, the first water passage hole 21 is set to 2-6, and the diameter of the first water passage hole 21 is set to 0.8-1.2mm.
[0046] In one embodiment of this utility model, the small end of the conical hole faces the first water passage 21, the large end of the conical hole faces the water inlet direction of the steady flow section water passage 12, the diameter of the small end of the conical hole is set to 1-1.5mm, and / or the diameter of the large end of the conical hole is set to 1.6-2.5mm.
[0047] Understandably, the first water passage 21 is used to divert water flow. The smaller diameter of each passage increases the flow velocity, triggering cavitation and generating bubbles. Simultaneously, the number and diameter of the first water passage 21 affect flow resistance; it is necessary to ensure bubble generation without causing excessive flow resistance. Therefore, when the length and diameter of the porous foam core 2 are set to 5mm, the number of first water passages 21 is preferably 4, and the diameter of the first water passage 21 is preferably 1mm. Depending on the size of the application product, as the length and diameter of the porous foam core 2 increase or decrease, the number and diameter of the first water passages 21 can also be adjusted accordingly to increase or decrease, ensuring bubble generation without causing excessive flow resistance.
[0048] Furthermore, the second water passage 31 adopts a conical shape, with the small end of the conical hole facing the first water passage 21 and the large end facing the steady flow section. This helps to receive the high-speed water flow from the front section and gradually expand it to form turbulence. At the same time, the larger size of the large end of the conical hole slows down the flow rate, increases the mixing time, and makes the bubbles more uniform. Therefore, when the length and diameter of the expanding foam core 3 are set to 5mm and 5mm respectively, the small end of the conical hole is preferably set to 1mm and the large end of the conical hole is preferably set to 1.8mm. Depending on the size of the application product, when the length and diameter of the expanding foam core 3 are increased or decreased, the diameter of the small and large ends of the conical hole can also be increased or decreased accordingly.
[0049] In one embodiment of the present invention, the outer surfaces of the porous foam core 2 and the expanded foam core 3 are covered with an elastic layer 4 so that the porous foam core 2 and the expanded foam core 3 are interference-fitted into the bubble generating section water channel 11 through the elastic layer 4. The elastic layer 4 is any one of rubber, TPE or silicone.
[0050] Understandably, in this embodiment, the porous foam core 2 and the conical expanded foam core 3 are assembled by the interference fit of the elastic layer 4. The elastic layer 4 can fill the gap between the core and the inner wall of the water channel to ensure a tight fit. Secondly, the interference fit of the elastic layer 4 makes the core easier to install and disassemble, and easier to clean or replace, thereby improving the maintainability of the product. Furthermore, it simplifies the manufacturing process because it does not require a complex fixing structure, thus reducing production costs.
[0051] Specifically, the elastic layer 4 made of rubber has good elasticity and resilience, which can effectively achieve the sealing effect of interference fit; or, the elastic layer 4 made of thermoplastic elastomer (TPE) is flexible in processing, easy to mold, suitable for complex structures, and achieves better fixing effect; good elasticity and flexibility can adapt to water channel designs of different shapes; the elastic layer 4 made of silicone has excellent high temperature resistance, strong hydrophobicity, is not easy to breed bacteria, is easy to clean, and has good anti-aging performance and long service life under long-term use.
[0052] In one embodiment of this utility model, the microbubble generating structure is integrally formed with the water pipe body 1, so that the porous foaming core 2 and the expanded foaming core 3 are fixedly connected to the inner wall of the water pipe body 1.
[0053] Understandably, the microbubble generating structure is integrally formed with the water pipe body 1, which allows the porous foam core 2 and the expanded foam core 3 to form a seamless single structure with the water pipe body 1. This avoids gaps or interfaces that may exist in the separate assembly, improves the sealing of the water circuit, and enhances the mechanical strength of the overall structure. It ensures that the core is not easily displaced or loosened under the impact of water flow, thereby ensuring the reliability of long-term use.
[0054] In one embodiment of this utility model, the inner diameter of the steady flow section water passage 12 is smaller than the inner diameter of the bubble generating section water passage 11. The water pipe body 1 also includes a nozzle water passage. The nozzle water passage is configured as a tapered pipe with a gradually decreasing inner diameter, and the inner diameter of the water pipe body 1 at the outlet is larger than the minimum inner diameter of the nozzle water passage.
[0055] Understandably, the steady flow section 12 helps stabilize the water flow, reduce pressure fluctuations, and ensure a continuous and stable output of bubble water; and the conical contraction of the nozzle water path can increase the water flow velocity. Combined with the increase in the inner diameter of the water outlet of the water pipe body 1 at the outlet relative to the end of the nozzle water path, it can disperse the bubble water and cover a larger cleaning area.
[0056] One embodiment of this utility model also discloses a dental rinsing device, including a water outlet pipe of a dental irrigator as described in any of the above embodiments.
[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A water outlet pipe for a dental irrigator, characterized in that, The system includes a water pipe body (1) and a microbubble generating structure: the water pipe body (1) is provided with a bubble generating section water channel (11) and a steady flow section water channel (12); the microbubble generating structure includes a porous foaming core (2) and an expanding foaming core (3); the porous foaming core (2) is located at the inlet end of the bubble generating section water channel (11) to increase the flow velocity of the water flowing through the bubble generating section water channel (11) and generate bubbles; the expanding foaming core (3) is located at the outlet end of the bubble generating section water channel (11) to make the water flowing through the bubble generating section water channel (11) form turbulence and generate microbubbles; the steady flow section water channel (12) is located on the outlet side of the expanding foaming core (3).
2. The water outlet pipe of the dental irrigator as described in claim 1, characterized in that, The porous foam core (2) is arranged with a plurality of first water passage holes (21) in an axial array; the expanded foam core (3) is arranged with second water passage holes (31) in an axial array, and the second water passage holes (31) are set as tapered holes with gradually widening inner walls.
3. The water outlet pipe of the dental irrigator as described in claim 2, characterized in that, The first water passage (21) is set to 2-6, and the diameter of the first water passage (21) is set to 0.8-1.2mm.
4. The water outlet pipe of the dental irrigator as described in claim 2, characterized in that, The small end of the conical hole faces the first water passage (21), and the large end of the conical hole faces the water inlet direction of the steady flow section (12).
5. The water outlet pipe of the dental irrigator as described in claim 4, characterized in that, The small end diameter of the tapered hole is set to 1-1.5 mm; and / or, the large end diameter of the tapered hole is set to 1.6-2.5 mm.
6. The water outlet pipe of the dental irrigator as described in claim 1, characterized in that, The outer surfaces of the porous foam core (2) and the expanded foam core (3) are covered with an elastic layer (4) so that the porous foam core (2) and the expanded foam core (3) are interference-fitted into the bubble generating section water channel (11) through the elastic layer (4).
7. The water outlet pipe of the dental irrigator as described in claim 1, characterized in that, The microbubble generating structure is integrally formed with the water pipe body (1) so that the porous foam core (2) and the expanded foam core (3) are fixedly connected to the inner wall of the water pipe body (1).
8. The water outlet pipe of the dental irrigator as described in any one of claims 1-7, characterized in that, The inner diameter of the steady flow section water channel (12) is smaller than the inner diameter of the bubble generating section water channel (11).
9. The water outlet pipe of the dental irrigator as described in claim 8, characterized in that, The water pipe body (1) also includes a nozzle water passage (13), which is configured as a tapered pipe with a gradually decreasing inner diameter, and the inner diameter of the water pipe body (1) at the outlet is greater than the minimum inner diameter of the nozzle water passage (13).
10. A dental rinsing device, characterized in that, Includes the water outlet pipe of the dental irrigator as described in any one of claims 1-9.