Nozzle and oral irrigator with same

Abstract

The nozzle comprises a body, a liquid channel allowing liquid to flow is formed in the body, and the liquid channel comprises a water inlet section, a contraction section, an extrusion section and a mixing section which are sequentially communicated in the flowing direction of the liquid; the channel caliber of the water inlet section and the channel caliber of the contraction section are gradually reduced in the flowing direction, the channel caliber of the extrusion section is flat, and the channel caliber of the mixing section is larger than that of the extrusion section. An air inlet is formed in the body and is communicated with the mixing section. According to the technical scheme, water flow sprayed out of the oral irrigator sequentially flows to the water inlet section and the contraction section with the channel caliber gradually reduced, so that the flow speed of the water flow is greatly increased, then the water flow flows to the extrusion section with the channel caliber being flat, the water flow is changed into linear water flow from point-shaped water flow, and finally the water flow is mixed with air entering from the air inlet in the mixing section. Therefore, the stimulation to the gingiva is reduced, the cleaning efficiency of the teeth and the slits between the teeth is improved, and the user experience is good.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning, and in particular to a nozzle and an oral irrigator having the same. Background Art

[0002] An oral irrigator is a device used to care for the oral cavity. It can use a certain pressure to spray a cleaning water column from the nozzle of the oral irrigator to clean the oral cavity. It has gradually been widely used in people's daily lives.

[0003] At present, the cleaning water column sprayed out through the nozzle of a traditional water flosser is often a point-like water flow. This kind of water flow has a large impact force and is highly irritating to the gums. It is not efficient in cleaning teeth and between teeth, has limited cleaning power, and provides a poor user experience. Utility Model Content

[0004] In response to the above technical problems, the present application provides a nozzle and an oral irrigator having the same, aiming to solve the problem that the point-like water flow sprayed by the existing nozzle is highly irritating to the gums and is not efficient enough in cleaning teeth and between teeth, thereby improving the cleaning power and user experience.

[0005] To solve the above technical problems, the present application provides a nozzle, comprising a body, wherein the body has a liquid channel for liquid flow, wherein the liquid channel comprises a water inlet section, a contraction section, an extrusion section, and a mixing section, which are sequentially connected along the flow direction of the liquid;

[0006] The channel diameters of the water inlet section and the contraction section gradually decrease along the flow direction, the channel diameter of the extrusion section is flat, and the channel diameter of the mixing section is larger than the channel diameter of the extrusion section;

[0007] An air inlet is provided on the main body, and the air inlet is communicated with the mixing section.

[0008] Optionally, the main body further includes a nozzle and a nozzle, the nozzle is arranged at one end of the nozzle, the contraction section, the extrusion section and the mixing section are formed in the nozzle, and the water inlet section is formed in the nozzle.

[0009] Optionally, the front portion of the nozzle includes an outer tube and an inner tube disposed within the outer tube, an air intake gap is formed between the inner tube and the outer tube, the air intake gap is communicated with the mixing section, the extrusion section is disposed within the inner tube, the mixing section is disposed within the outer tube, and the air inlet is opened on a side wall of the outer tube opposite to the air intake gap;

[0010] The front end of the outer tube protrudes from the front end of the inner tube, and the mixing section is located between the front end of the inner tube and the front end of the outer tube.

[0011] Optionally, the outer tube and the inner tube are coaxially arranged, and the bottom of the outer tube is connected to the side wall of the inner tube.

[0012] Optionally, the inlet end of the contraction section is circular, and the cross-section of the water flow channel in the extrusion section is racetrack-shaped.

[0013] Optionally, the front end surface of the extrusion section is recessed along the length direction of the contraction section to form an air vent.

[0014] Optionally, there are two air vents, which are respectively located on both sides of the water flow channel of the extrusion section and perpendicular to the water flow channel of the extrusion section.

[0015] Optionally, there are two air inlets, and the two air inlets are arranged opposite to each other.

[0016] Optionally, the axes of the two air vents are parallel to the axes of the two air inlets.

[0017] The present application also provides a water flosser, comprising a water pump and the nozzle as described above, wherein the output end of the water pump is connected to the water inlet section.

[0018] According to the technical solution of the present application, the water flow sprayed from the water flosser flows in sequence to the water inlet section and the contraction section with gradually decreasing channel diameters, which greatly accelerates the water flow rate, and then flows to the extrusion section with a flat channel diameter, so that the water flow changes from a point-like water flow to a linear water flow, and finally mixes with the air entering from the air inlet in the mixing section, and is sprayed out from the water outlet of the mixing section, thereby reducing irritation to the gums, improving the cleaning efficiency of teeth and gaps between teeth, and providing a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the front view of the nozzle according to the first embodiment of the present application. Figure 1 ;

[0021] Figure 2 is a schematic diagram of the right side structure of the nozzle according to the first embodiment of the present application;

[0022] Figure 3 yes Figure 2 AA section view;

[0023] Figure 4 yes Figure 3 A magnified view of part A;

[0024] Figure 5 yes Figure 2 BB cross-sectional view;

[0025] Figure 6 This is a schematic diagram of the front view of the nozzle according to the first embodiment of the present application. Figure 2 ;

[0026] Figure 7 yes Figure 6 CC cross-sectional view;

[0027] Figure 8 yes Figure 6 DD cross-sectional view;

[0028] Figure 9 yes Figure 6 EE cross-sectional view. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0030] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may be used, and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application.

[0031] Although the terms "first", "second", etc. are used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0032] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0033] First embodiment

[0034] Figure 1 and Figure 2 They are respectively a front view structural diagram and a right view structural diagram of a nozzle according to an embodiment of the present application, Figure 3 yes Figure 2 AA cross-sectional view, Figure 4 yes Figure 3 A magnified view of part A, Figure 5 yes Figure 2 BB cross-sectional view.

[0035] like Figures 1 to 5 As shown, the nozzle includes a main body, the interior of the main body has a liquid channel for the flow of the cleaning water column. Specifically, the liquid channel includes a water inlet section 10, a contraction section 20, an extrusion section 30 and a mixing section 40 that are connected in sequence along the flow direction of the cleaning water column. In other words, the cleaning water column enters the liquid channel from the water inlet section 10 and is finally ejected from the mixing section 40.

[0036] As one of the implementation methods, starting from the water inlet of the water inlet section 10, the channel diameters of the water inlet section 10 and the contraction section 20 gradually decrease along the flow direction. In this way, since the area of ​​the water outlet is sharply reduced, the flow rate of the cleaning water column is greatly accelerated.

[0037] As one of the embodiments, the channel aperture of the extrusion section 30 is flat. For example, the channel aperture of the extrusion section 30 can be in the shape of a runway, a rectangle, an ellipse, etc., and then, the cleaning water column flowing into the extrusion section 30 will change from a point-like water flow to a linear water flow, that is, the way the cleaning water column impacts the oral cavity will change from point contact to line contact, effectively reducing the irritation to the gums.

[0038] In one embodiment, the channel diameter of the mixing section 40 is larger than that of the extrusion section 30. An air inlet 50 is provided on the main body, communicating with the mixing section 40. Specifically, after the clean water column flows out of the extrusion section 30, a low pressure is generated at the edge of the water flow, and air outside the main body is drawn into the mixing section 40 through the air inlet 50, where it is mixed with the clean water column. By making the channel diameter of the mixing section 40 larger than that of the extrusion section 30, this ensures that the linear water column ejected from the front end of the mixing section 40 is fully ejected. Furthermore, it ensures that the clean water column ejected from the extrusion section 30 is fully mixed with the air in the mixing section 40.

[0039] Through the above technical solution, the water flow sprayed from the mixing section 40 is a linear cleaning water column with bubbles, which effectively reduces the irritation to the gums, improves the cleaning efficiency of the teeth and the gaps between teeth, and provides a good user experience.

[0040] In one embodiment, the main body further includes a nozzle 60 and a nozzle 70. The nozzle 60 and nozzle 70 may be detachably connected or integrally formed, without limitation. The nozzle 60 is disposed at the outlet end of the nozzle 70, the contraction section 20, the extrusion section 30, and the mixing section 40 are formed within the nozzle 60, and the water inlet section 10 is formed within the nozzle 70.

[0041] In one embodiment, the front portion of the nozzle 60 includes an outer tube 61 and an inner tube 62 disposed within the outer tube 61. An air intake gap 63 is formed between the inner tube 62 and the outer tube 61 for allowing external air to enter the nozzle 60. In the illustrated structure, the air intake gap 63 is located between the outer wall of the inner tube 62 and the inner wall of the outer tube 61 and is connected to the mixing section 40.

[0042] The extrusion section 30 is disposed within the inner tube 62, the mixing section 40 is disposed within the outer tube 61, and the air inlet 50 is provided on the sidewall of the outer tube 61 opposite the air inlet gap 63. Specifically, due to the negative pressure, external air enters the air inlet gap 63 through the air inlet 50, then flows from the air inlet gap 63 to the mixing section 40, where it mixes with the clean water column ejected from the extrusion section 30 to form a clean water column with bubbles.

[0043] In one embodiment, the front end of the outer tube 61 protrudes from the front end of the inner tube 62, forming a configuration in which the inner tube 62 is surrounded and covered by the outer tube 61. The space formed between the front ends of the inner tube 62 and the outer tube 61 is the mixing section 40.

[0044] As one embodiment, the outer tube 61 and the inner tube 62 are coaxially arranged, and the bottom of the outer tube 61 is connected to the side wall of the inner tube 62 to form a cavity with a front end opening in the front of the nozzle 60, wherein the front of the cavity is the mixing section 40.

[0045] like Figure 4 、 Figures 6 to 9 As shown in the figure, as one embodiment, the inlet end of the contraction section 20 is circular. Specifically, the contraction section 20, which serves as the transition to the extrusion section 30, has a circular inlet end connected to the water inlet section 10 and a racetrack-shaped outlet end connected to the extrusion section 30, thereby forming a cone-like shape with a rapidly decreasing inner diameter. This significantly accelerates the flow rate of the cleaning water column as it flows from the water inlet section 10 through the contraction section 20.

[0046] Correspondingly, the extrusion section 30 is an elongated water channel with a racetrack-shaped cross-section. The water flowing through the extrusion section 30 is transformed into a long strip, thereby changing the way the water impacts the oral cavity from the common point contact in the market to line contact. Furthermore, because the lateral area of ​​a racetrack-shaped column (the cross-sectional shape of the extrusion section 30) is greater than that of a circular cylinder when the cross-sectional area and height are the same, the contact area between the water and air ejected from the extrusion section 30 with a racetrack cross-section is larger, resulting in a more effective gas-liquid mixing effect.

[0047] As one of the embodiments, the front end surface of the extrusion section 30 is recessed along the length direction of the contraction section 20 to form an air vent 31. Specifically, in the illustrated structure, the front end surface of the extrusion section 30 is recessed along the direction opposite to the flow direction of the clean water column, that is, along the length direction of the contraction section 20, thereby forming an air vent 31 at the front end of the extrusion section 30. In the process of water flowing out of the extrusion section 30 to the mixing section 40, a negative pressure will be formed at the port of the extrusion section 30. Due to the influence of the negative pressure, the air in the atmosphere enters the mixing section 40 through the air inlet 50. The air vent 31 is used to disrupt the flow direction of the air so that the air forms airflows of different flow rates in the mixing section 40, thereby improving the mixing efficiency of the air and liquid.

[0048] In one embodiment, there are two air vents 31, one located on either side of the water flow channel of the extrusion section 30 and perpendicular to the water flow channel of the extrusion section 30. Specifically, the two air vents 31 are arranged on opposite sides of the water flow channel of the extrusion section 30 and perpendicular to the water flow channel of the extrusion section 30. In this way, the two oppositely arranged air vents 31 can cause air to form vortices in the water flow, increasing the chance of air and water mixing. The negative pressure area formed by the water flow at the outlet end of the extrusion section 30 is increased, and air is further drawn into the water flow, increasing the contact area between water and air, thereby improving the gas-liquid mixing efficiency.

[0049] In one embodiment, there are two air inlets 50, which are disposed opposite each other. Specifically, the two air inlets 50 are disposed opposite each other on the side walls of the main body. This increases the amount of air entering the mixing section 40 due to negative pressure, thereby increasing the contact area between the cleaning water column and the air, making it easier for the air to be drawn in and dispersed into the water flow, thereby improving the efficiency of gas-liquid mixing.

[0050] In one embodiment, the axes of the two air vents 31 are parallel to the axes of the two air inlets 50. Specifically, the axes of the two air vents 31 are parallel to the axes of the two air inlets 50. In this way, due to the negative pressure, the air entering the mixing section 40 from the air inlets 50 will immediately come into contact with the air vents 31 and be quickly disrupted by the air vents 31. This allows the air to quickly form airflows of different flow rates in the mixing section 40 and quickly mix with the water flow ejected from the extrusion section 30, thereby improving the efficiency of gas-liquid mixing.

[0051] Second embodiment

[0052] The present application also provides a water irrigator, comprising a water pump and the nozzle described above, wherein the output end of the water pump is connected to the water inlet section 10. Thus, when the water irrigator is activated, the water pump is used to pump a clean water column toward the water inlet of the water inlet section 10. The clean water column then flows sequentially toward the water inlet section 10, the contraction section 20, the extrusion section 30, and the mixing section 40, and is ultimately ejected from the front water outlet of the mixing section 40. Through the above-described technical solution, the water flow ejected from the mixing section 40 is a linear clean water column with bubbles, which effectively reduces irritation to the gums, improves the cleaning efficiency of the teeth and interdental spaces, and provides a good user experience.

[0053] All the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solution of the present application rather than to limit it. The scope of protection of the present application is not limited thereto. Any equivalent modification or replacement of the technical solution described in the above embodiments by any technician familiar with the technical field is included in the scope defined by the claims of the present application.

Claims

1. A nozzle, characterized in that: The nozzle comprises a body, the interior of the body having a liquid channel for liquid flow, the liquid channel comprising a water inlet section, a contraction section, an extrusion section and a mixing section which are sequentially connected along the flow direction of the liquid; The channel diameters of the water inlet section and the contraction section gradually decrease along the flow direction, the channel diameter of the extrusion section is flat, and the channel diameter of the mixing section is larger than the channel diameter of the extrusion section; An air inlet is provided on the main body, and the air inlet is communicated with the mixing section.

2. The nozzle according to claim 1, characterized in that The main body further includes a nozzle and a nozzle. The nozzle is arranged at one end of the nozzle. The contraction section, the extrusion section and the mixing section are formed in the nozzle. The water inlet section is formed in the nozzle.

3. The nozzle according to claim 2, characterized in that The front portion of the nozzle includes an outer tube and an inner tube disposed within the outer tube, an air intake gap being formed between the inner tube and the outer tube, the air intake gap being in communication with the mixing section, the extrusion section being disposed within the inner tube, the mixing section being disposed within the outer tube, and the air inlet being opened on a side wall of the outer tube opposite the air intake gap; The front end of the outer tube protrudes from the front end of the inner tube, and the mixing section is located between the front end of the inner tube and the front end of the outer tube.

4. The nozzle according to claim 3, characterized in that The outer tube is coaxially arranged with the inner tube, and the bottom of the outer tube is connected to the side wall of the inner tube.

5. The nozzle according to any one of claims 1 to 4, characterized in that The inlet end of the contraction section is circular, and the cross section of the water flow channel in the extrusion section is racetrack-shaped.

6. The nozzle according to any one of claims 1 to 4, characterized in that The front end surface of the extrusion section is recessed along the length direction of the contraction section to form an air vent.

7. The nozzle according to claim 6, characterized in that There are two air vents, which are respectively located on both sides of the water flow channel of the extrusion section and are perpendicular to the water flow channel of the extrusion section.

8. The nozzle according to claim 7, characterized in that There are two air inlets, which are arranged opposite to each other.

9. The nozzle according to claim 8, characterized in that The axes of the two air vents are parallel to the axes of the two air inlets.

10. A water flosser, characterized in that: It comprises a water pump and the nozzle according to any one of claims 1 to 9, wherein the output end of the water pump is connected to the water inlet section.

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