Nozzle and oral irrigator
By designing the first and second flow channels in the water flosser nozzle to generate bubble-like water flow, the discomfort and oral damage caused by excessive water pressure are solved, achieving a dental care effect that balances efficient cleaning and comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-03-13
AI Technical Summary
Existing oral irrigators spray excessive water pressure, causing discomfort and oral damage to users.
Design a nozzle comprising a first flow channel and a second flow channel, wherein the diameter of the first flow channel is larger than that of the second flow channel. When water flows through, bubbles are generated at the junction of the first and second flow channels, forming a bubble water flow to relieve irritation, and energy is released by the bursting of bubbles to remove tooth stains.
While ensuring effective cleaning, it reduces the irritation of water flow to teeth, improves user comfort, and avoids oral damage.
Smart Images
Figure CN223987939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dental care technology, and in particular to a nozzle and a dental flosser. Background Technology
[0002] A water flosser is a device used for oral care and is now widely used in people's daily lives. Water flossers clean the user's mouth by using pressure to propel a stream of water from the nozzle.
[0003] Existing water flossers clean teeth using a pulsed water flow. Water flossing requires high-pressure water, and the higher the water pressure, the better the cleaning effect on teeth. However, conversely, increased water pressure can cause discomfort such as stinging in the mouth, and may even damage the oral cavity.
[0004] Therefore, this application provides a new nozzle and a water flosser to address the above-mentioned problems. Utility Model Content
[0005] The purpose of this invention is to provide a nozzle that can at least alleviate the technical problem in the prior art where excessive water pressure from the water jet of a water flosser causes discomfort to the user or even damage to the oral cavity.
[0006] The purpose of this utility model is also to provide a water flosser to further alleviate the technical problem in the prior art where excessive water pressure from the water jet of the water flosser causes discomfort to the user and even damage to the oral cavity.
[0007] Based on the aforementioned first objective, this utility model provides a nozzle, the nozzle including a nozzle body, a water flow channel provided in the nozzle body, the water flow channel extending through the nozzle along the extension direction of the water flow channel, and forming an inlet and an outlet on the nozzle; and along the extension direction of the water flow channel, the water flow channel includes a first flow channel and a second flow channel that are connected, the first flow channel being disposed near the inlet.
[0008] The first flow channel is provided with a first opening, which connects the first flow channel to the second flow channel. The second flow channel is provided with a second opening, which connects the second flow channel to the first flow channel. The diameter of the first opening is larger than the diameter of the second opening.
[0009] Furthermore, the diameter of the first port ranges from 0.8mm to 1.1mm, and the diameter of the second port ranges from 0.6mm to 0.8mm.
[0010] Furthermore, the diameter of the first opening is 0.9 mm, and the diameter of the second opening is 0.7 mm.
[0011] Furthermore, from the inlet to the outlet, the cross-sectional area of the first flow channel gradually decreases.
[0012] Furthermore, from the inlet to the outlet, the cross-sectional area of the second flow channel gradually increases.
[0013] Furthermore, the length of the first flow channel is greater than the length of the second flow channel, and the ratio of the length of the first flow channel to the length of the second flow channel is in the range of 15-20.
[0014] Furthermore, along the extending direction of the second flow channel, the second flow channel includes a plurality of sequentially connected sub-flow channels, each of the sub-flow channels including a sub-inlet and a sub-outlet, wherein water can enter the sub-flow channel from the sub-inlet and flow out from the sub-outlet;
[0015] The two adjacent sub-channels are the first sub-channel and the second sub-channel. The second sub-channel is located close to the outlet, and the diameter of the sub-outlet of the first sub-channel is smaller than the diameter of the sub-inlet of the second sub-channel.
[0016] Furthermore, the nozzle body includes a nozzle head and a nozzle pipe, the first flow channel is disposed in the nozzle pipe, and the second flow channel is disposed in the nozzle head;
[0017] Wherein, both the nozzle and the nozzle pipe are straight pipes, and their axes coincide; or, the nozzle is a bent pipe, and the nozzle pipe is a straight pipe.
[0018] Furthermore, the nozzle and the nozzle pipe are integrally formed.
[0019] By adopting the above technical solution, the nozzle of this utility model has at least the following beneficial effects:
[0020] In this invention, water enters the water flow channel from the inlet, passes through the first flow channel to the first opening, flows through the first opening and the second opening in sequence to enter the second flow channel, and is sprayed out from the outlet after passing through the second flow channel.
[0021] In this design, the diameter of the first opening is larger than that of the second opening. This sudden decrease in the water flow area between the first and second openings causes the water to collide with the inner wall of the nozzle body, generating numerous small bubbles. These bubbles reflect back to the main water flow and, together with the main water flow, enter the second channel through the second opening, forming a bubble-filled water flow. This bubble-filled water flow is then ejected through the outlet for cleaning teeth. On one hand, the energy released when the bubbles burst can loosen stubborn stains on teeth, achieving the purpose of cleaning and removing stains, thus improving the cleaning effect of the water flosser. On the other hand, the bubble-filled water flow, containing a large number of bubbles, effectively alleviates the irritation caused during teeth cleaning, improving comfort. In summary, the nozzle of this embodiment, while ensuring the cleaning effect of the water flosser, can alleviate the irritation caused during teeth cleaning, thereby mitigating the technical problem in existing water flossers where excessive water pressure causes discomfort or even oral damage to the user.
[0022] Based on the second objective mentioned above, this utility model provides a water flosser, which includes a water flosser body and the nozzle, wherein the nozzle body is detachably connected to the water flosser body.
[0023] By adopting the above technical solution, the oral irrigator of this utility model has at least the following beneficial effects:
[0024] By incorporating the aforementioned nozzle into the water flosser, the water flosser consequently possesses all the advantages of the aforementioned nozzle, which will not be elaborated upon here. Attached Figure Description
[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 A schematic diagram of the nozzle structure provided in an embodiment of this utility model;
[0027] Figure 2 for Figure 1 A cross-sectional view of the nozzle;
[0028] Figure 3 for Figure 2 Enlarged view of a portion of the nozzle's structure;
[0029] Figure 4 This is a partial enlarged view of another structure of the nozzle provided in an embodiment of the present utility model.
[0030] Figure label:
[0031] 1- Nozzle body;
[0032] 111 - First flow channel; 112 - Second flow channel; 113 - First inlet; 114 - Second inlet; 115 - Sub-flow channel;
[0033] 12-Inlet; 13-Outlet;
[0034] 2-Sprayer head;
[0035] 3- Nozzle. Detailed Implementation
[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] Example 1
[0040] Please see Figure 1 and combined Figure 2 and Figure 3This embodiment provides a nozzle, which includes a nozzle body 1. A water flow channel is provided inside the nozzle body 1. The water flow channel extends through the nozzle along the extension direction and forms an inlet 12 and an outlet 13 on the nozzle. The water flow channel includes a first flow channel 111 and a second flow channel 112 that are connected along the extension direction. The first flow channel 111 is located near the inlet 12. The first flow channel 111 is provided with a first opening 113, which connects the first flow channel 111 to the second flow channel 112. The second flow channel 112 is provided with a second opening 114, which connects the second flow channel 112 to the first flow channel 111. The diameter of the first opening 113 is larger than the diameter of the second opening 114.
[0041] It should be noted that in this embodiment, the water flow enters the water channel from the inlet 12, passes through the first flow channel 111 to the first outlet 113, flows through the first outlet 113 and the second outlet 114 in sequence to enter the second flow channel 112, and is sprayed out from the outlet 13 after passing through the second flow channel 112.
[0042] The diameter of the first opening 113 is larger than that of the second opening 114. This sudden decrease in the water flow area between the first and second openings causes the water to collide with the inner wall of the nozzle body 1, generating numerous small bubbles. These bubbles reflect back to the main water flow and, together with the main water flow, pass through the second opening 114 into the second channel 112, forming a bubble-filled water flow. This bubble-filled water flow is then ejected through the outlet 13 for cleaning teeth. On one hand, the energy released when the bubbles burst can loosen stubborn stains on teeth, achieving the purpose of cleaning and removing stains, thus improving the cleaning effect of the water flosser. On the other hand, the bubble-filled water flow, mixed with a large number of bubbles, can effectively alleviate the irritation caused during teeth cleaning, improving the comfort of the process. In summary, the nozzle of this embodiment can alleviate the irritation caused by cleaning teeth while ensuring the cleaning effect of the oral irritator. This solves the technical problem in the prior art where the water pressure of the water jet from the oral irritator is too high, causing discomfort to the user or even damage to the oral cavity.
[0043] Optionally, the diameter of the first aperture 113 ranges from 0.8mm to 1.1mm, and the diameter of the second aperture 114 ranges from 0.6mm to 0.8mm. For example, the diameter of the first aperture 113 is 0.8mm, 0.9mm, 1.0mm, or 1.1mm, and the diameter of the second aperture 114 is 0.6mm, 0.7mm, or 0.8mm, etc.
[0044] Preferably, in this embodiment, the diameter of the first port 113 is 0.9 mm, and the diameter of the second port 114 is 0.7 mm.
[0045] Preferably, please refer to Figure 2 and Figure 3 In this embodiment, the cross-sectional area of the first flow channel 111 gradually decreases from the inlet 12 to the outlet 13.
[0046] It should be noted that the cross-section of the flow channel determines the flow rate and velocity of the water flowing through it.
[0047] Among them, from the inlet 12 to the outlet 13, the cross-sectional area of the first flow channel 111 gradually decreases. That is to say, the cross-section of the inlet 12 is the maximum value of the cross-section of the first flow channel 111, that is, the cross-section at the inlet 12 of the first flow channel 111 is the largest; the cross-section of the first outlet 113 is the minimum value of the cross-section of the first flow channel 111, that is, the cross-section at the first outlet 113 of the first flow channel 111 is the smallest.
[0048] With this setup, as the water flows from the inlet 12 to the first outlet 113 in the first flow channel 111, the water flow is compressed, the water pressure gradually increases, and the water flow speed gradually accelerates, which is used to provide greater flushing pressure for the water flosser, making it easier to clean teeth and remove stains.
[0049] Preferably, please refer to Figure 2 and Figure 3 In this embodiment, the cross-sectional area of the second flow channel 112 gradually increases from the inlet 12 to the outlet 13.
[0050] Among them, from the inlet 12 to the outlet 13, the cross-sectional area of the second flow channel 112 gradually increases. That is to say, the cross-sectional area of the outlet 13 is the maximum value of the cross-sectional area of the second flow channel 112, that is, the cross-sectional area at the outlet 13 of the second flow channel 112 is the largest; the cross-sectional area of the second outlet 114 is the minimum value of the cross-sectional area of the second flow channel 112, that is, the cross-sectional area at the second outlet 114 of the second flow channel 112 is the smallest.
[0051] With this configuration, as the water flows from the second outlet 114 to the outlet 13 in the second channel 112, the flow velocity gradually decreases, which is used to appropriately reduce the water pressure and prevent excessive water pressure from causing discomfort to the user.
[0052] In summary, the nozzle of this embodiment can provide a large water pressure to the water flow through the first flow channel 111, and can also appropriately reduce the water flow pressure through the second flow channel 112. Thus, after the water flows through the first flow channel 111 and the second flow channel 112, it has a suitable pressure, which will not affect the cleaning effect due to insufficient pressure, nor will it affect the comfort of use due to excessive pressure.
[0053] Preferably, please refer to Figure 2In this embodiment, the length of the first flow channel 111 is greater than the length of the second flow channel 112, and the ratio of the length of the first flow channel 111 to the length of the second flow channel 112 is in the range of 15-20.
[0054] For example, the ratio of the length of the first flow channel 111 to the length of the second flow channel 112 can be 15, 16, 17, 18, 19, or 20. It should be noted that the ratio of the length of the first flow channel 111 to the length of the second flow channel 112 is selected according to the actual required water flow pressure, and no specific limit is made on the length of the first flow channel 111 and the length of the second flow channel 112 here.
[0055] This design allows the longer first flow channel 111 to significantly increase water pressure, making it easier to clean teeth and remove stains, while the shorter second flow channel 112 can appropriately reduce water pressure to prevent excessive water pressure from causing discomfort to the user.
[0056] Preferably, please refer to Figure 4 In this embodiment, along the extension direction of the second flow channel 112, the second flow channel 112 includes a plurality of sequentially connected sub-flow channels 115. Each sub-flow channel 115 includes a sub-inlet and a sub-outlet. Water can enter the sub-flow channel 115 from the sub-inlet and flow out from the sub-outlet. Among them, two adjacent sub-flow channels 115 are respectively the first sub-flow channel 115 and the second sub-flow channel 115. The second sub-flow channel 115 is located close to the water outlet 13, and the diameter of the sub-outlet of the first sub-flow channel 115 is smaller than the diameter of the sub-inlet of the second sub-flow channel 115.
[0057] In other words, each sub-channel 115 is a frustum-shaped cone, with the larger end face of the frustum positioned close to the outlet 13. The diameter of the outlet of the first sub-channel 115 is smaller than the diameter of the inlet of the second sub-channel 115. This configuration creates a variable-diameter channel between adjacent sub-channels 115. As the water flows through the variable-diameter channel in the second channel 112, a gas-liquid mixing zone is continuously formed, creating tiny bubbles within the water flow. These tiny bubbles effectively alleviate irritation and improve the comfort of brushing teeth.
[0058] In summary, the nozzle of this embodiment can not only form bubbles between the first flow channel 111 and the second flow channel 112, but also continuously form bubbles during the flow in the second flow channel 112, thereby increasing the bubble content in the water flow and further improving the comfort of rinsing teeth.
[0059] Preferably, please refer to Figure 1 In this embodiment, the nozzle body 1 includes a nozzle 2 and a nozzle pipe 3. A first flow channel 111 is disposed on the nozzle pipe 3, and a second flow channel 112 is disposed on the nozzle 2. The nozzle 2 and the nozzle pipe 3 are both straight pipes, and their axes coincide. Alternatively, the nozzle 2 is a bent pipe, and the nozzle pipe 3 is a straight pipe.
[0060] Preferably, in this embodiment, the nozzle 2 and the nozzle 3 are integrally formed.
[0061] This setup ensures, firstly, the structural sealing performance of the nozzle body 1 during processing, and secondly, guarantees the consistency of the finished nozzle body 1 in terms of process, while also achieving high production efficiency and reducing the production cost of the nozzle.
[0062] Example 2
[0063] Embodiment 2 provides a water flosser, which includes the nozzle of Embodiment 1. The technical features of the nozzle disclosed in Embodiment 1 are also applicable to this embodiment. The technical features of the nozzle disclosed in Embodiment 1 will not be described again.
[0064] The oral irrigator provided in this embodiment includes an oral irrigator body and the above-mentioned nozzle, wherein the nozzle body 1 of the nozzle is detachably connected to the oral irrigator body.
[0065] In the nozzle body 1 of this water flosser, because the diameter of the first inlet 113 is larger than that of the second inlet 114, the water flow area decreases abruptly from the first inlet 113 to the second inlet 114. This causes the water to collide with the inner wall of the nozzle body 1 during the flow from the first inlet 113 to the second inlet 114, generating numerous small bubbles. These small bubbles reflect back to the main water flow and, together with the main water flow, pass through the second inlet 114 into the second flow channel 112, forming a bubble-filled water flow. This bubble-filled water flow is then ejected through the outlet 13 for cleaning teeth. On one hand, the energy released when the bubbles burst can loosen stubborn stains on the teeth, achieving the purpose of cleaning teeth and removing stains, thus improving the cleaning effect of the water flosser. On the other hand, the bubble-filled water flow, containing a large number of bubbles, can effectively alleviate the irritation caused during teeth cleaning, improving the comfort of the process. In summary, the nozzle of this embodiment ensures the cleaning effect of the water flosser while alleviating the irritation caused during teeth cleaning.
[0066] Therefore, this oral irrigator further alleviates the technical problem in existing technologies where excessive water pressure from the water jet causes discomfort or even damage to the oral cavity.
[0067] The water flosser of this embodiment has the advantages of the nozzle of Embodiment 1, which have been described in detail in Embodiment 1 and will not be repeated here.
[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A nozzle characterized by, The nozzle comprises a nozzle body (1) provided with a water flow channel, the water flow channel extends through the nozzle and forms an inlet (12) and an outlet (13) on the nozzle along the extension direction of the water flow channel, and the water flow channel comprises a first flow channel (111) and a second flow channel (112) connected in sequence along the extension direction of the water flow channel, and the first flow channel (111) is arranged close to the inlet (12); The first flow channel (111) is provided with a first port (113), the first flow channel (111) is communicated with the second flow channel (112) through the first port (113), the second flow channel (112) is provided with a second port (114), the second flow channel (112) is communicated with the first flow channel (111) through the second port (114), and the diameter of the first port (113) is greater than the diameter of the second port (114).
2. The nozzle of claim 1, wherein The diameter of the first port (113) is 0.8-1.1 mm, and the diameter of the second port (114) is 0.6-0.8 mm.
3. The nozzle of claim 2, wherein, The diameter of the first port (113) is 0.9 mm, and the diameter of the second port (114) is 0.7 mm.
4. The nozzle of claim 1, wherein The cross-sectional area of the first flow channel (111) gradually decreases from the inlet (12) to the outlet (13).
5. The nozzle of claim 4, wherein, The cross-sectional area of the second flow channel (112) gradually increases from the inlet (12) to the outlet (13).
6. The nozzle of claim 5, wherein, The length of the first flow channel (111) is greater than the length of the second flow channel (112), and the ratio of the length of the first flow channel (111) to the length of the second flow channel (112) is 15-20.
7. The nozzle of claim 5, wherein, Along the extension direction of the second flow channel (112), the second flow channel (112) comprises a plurality of sub-flow channels (115) connected in sequence, each of the sub-flow channels (115) comprises a sub-inlet and a sub-outlet, water flow can enter the sub-flow channel (115) from the sub-inlet and flow out from the sub-outlet; Among them, the two adjacent sub-flow channels (115) are respectively a first sub-flow channel and a second sub-flow channel, the second sub-flow channel is arranged close to the outlet (13), and the diameter of the sub-outlet of the first sub-flow channel is smaller than the diameter of the sub-inlet of the second sub-flow channel.
8. A nozzle according to any one of claims 1 to 7, characterised in that The nozzle body (1) comprises a nozzle head (2) and a nozzle pipe (3), the first flow channel (111) is arranged in the nozzle pipe (3), and the second flow channel (112) is arranged in the nozzle head (2); The nozzle head (2) and the nozzle pipe (3) are straight pipes, and the axes of the two coincide; or the nozzle head (2) is a bent pipe, and the nozzle pipe (3) is a straight pipe.
9. The nozzle of claim 8, wherein, The nozzle head (2) and the nozzle pipe (3) are integrally formed.
10. An oral irrigator characterized by, The oral irrigator comprises an oral irrigator body and the nozzle according to any one of claims 1-9, and the nozzle body (1) of the nozzle is detachably connected with the oral irrigator body.