Nozzle and oral irrigator

Abstract

The utility model relates to the technical field of oral care, in particular to a nozzle and a water pick. The nozzle includes a body. The interior of the main body is hollow to form a flow channel, and the flow channel comprises an inflow port allowing flushing fluid to flow in and an outflow port spraying the flushing fluid. Any position in the inlet flow section can be cut by a preset plane to form a first section, any position in the outlet flow section can be cut by the preset plane to form a second section, and any position in the cavitation flow section can be cut by the preset plane to form a third section. The size of the first section and the size of the second section are both larger than that of the third section. At least one part of the cavitation flow section has the same size on the third cross section corresponding to each position in the direction vertical to the flowing direction of the flushing fluid. According to the nozzle, by arranging the cavitation flow section with the small cross section area, flushing fluid is subjected to cavitation, bubbles generated by cavitation are mixed through the outlet flow section, the pressure of the flushing fluid is reduced, and the cleaning effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of oral care, and in particular to a nozzle and a water flosser. Background Art

[0002] An oral irrigator is a household hygiene appliance that uses jets to remove stains such as bacteria, plaque and tartar to clean teeth and spaces between teeth.

[0003] The water flosser generally includes a nozzle, which generates a jet to directly impact the teeth and the spaces between teeth.

[0004] In the related art, in order to achieve a sufficient cleaning effect, the pressure of the jet is often relatively high, and a jet with excessive pressure may cause damage to teeth and gums. Utility Model Content

[0005] In view of this, the present application provides a nozzle and a water flosser to reduce the pressure of the jet and improve the cleaning effect.

[0006] Specifically, the following technical solutions are included:

[0007] The first aspect of the present application provides a nozzle, which includes a main body. The main body is hollow inside to form a flow channel, and the flow channel includes an inlet for the flushing liquid to flow in and an outlet for ejecting the flushing liquid. The flow channel includes an inlet flow section, a cavitation flow section and an outlet flow section arranged in sequence and connected in sequence in the flow direction of the flushing liquid. Any position in the inlet flow section can be cut by a preset plane to form a first cross-section, any position in the outlet flow section can be cut by a preset plane to form a second cross-section, and any position in the cavitation flow section can be cut by a preset plane to form a third cross-section, and the size of the first cross-section and the size of the second cross-section are both larger than the size of the third cross-section, wherein the preset plane refers to a plane perpendicular to the flow direction of the flushing liquid. The size of the third cross-section corresponding to each position along the direction perpendicular to the flow of the flushing liquid is the same for at least a portion of the cavitation flow section.

[0008] Optionally, a size of the first cross section is greater than a size of the second cross section.

[0009] Optionally, the size of any one of the first cross section, the second cross section and the third cross section refers to at least one of a diameter and an area.

[0010] Optionally, the inlet flow section includes a transition section at one end close to the cavitation flow section, and the cross-sectional size of the transition section gradually decreases along the flow direction of the flushing liquid.

[0011] Optionally, an angle between an extension line of the side wall of the transition section and a central axis of the transition section is greater than or equal to 75°.

[0012] Optionally, the diameter of the end of the transition section away from the cavitation flow section is 1.5 to 2.5 mm. The diameter of the cavitation flow section is 0.6 to 0.8 mm. The length of the cavitation flow section is 0.5 to 1.2 mm. The end of the outlet flow section with a smaller diameter is connected to the cavitation flow section, and the angle between the extension line of the side wall of the outlet flow section and the central axis of the outlet flow section is 2.25 to 3.25°. The diameter of the end of the outlet flow section close to the cavitation flow section is equal to the diameter of the cavitation flow section. The length of the outlet flow section is 4 to 8 mm.

[0013] Optionally, the diameter of the end of the transition section away from the cavitation flow section is 2.5 mm. The diameter of the cavitation flow section is 0.65 mm. The length of the cavitation flow section is 0.85 mm. The end of the outlet flow section with a smaller diameter is connected to the cavitation flow section, and the angle between the extension line of the side wall of the outlet flow section and the central axis of the outlet flow section is 2.5°. The length of the outlet flow section is 6 mm.

[0014] Optionally, an angle between an extension line of the side wall of the transition section and a central axis of the transition section is less than or equal to 75°.

[0015] Optionally, the angle between the extension line of the side wall of the transition section and the central axis of the transition section is 45 to 75°. The diameter of the end of the transition section away from the cavitation flow section is 1.5 to 2.5 mm. The diameter of the cavitation flow section is 0.4 to 0.8 mm. The length of the cavitation flow section is 0.5 to 1.2 mm. The diameter of the outlet flow section is 1 to 1.4 mm. The length of the outlet flow section is 4 to 8 mm.

[0016] Optionally, the angle between the extension line of the side wall of the transition section and the central axis of the transition section is 60°. The diameter of the end of the transition section away from the cavitation flow section is 2.5 mm. The diameter of the cavitation flow section is 0.65 mm. The length of the cavitation flow section is 0.85 mm. The diameter of the outlet flow section is 1.17 mm. The length of the outlet flow section is 5 mm.

[0017] Optionally, an extension line of the side wall of the outlet flow segment forms an angle with the central axis of the outlet flow segment, an end of the outlet flow segment with a smaller diameter is connected to the cavitation flow segment, and an end of the outlet flow segment with a larger diameter extends to the edge of the main body.

[0018] Optionally, the angle between the extension line of the side wall of the transition section and the central axis is 15 to 45°. The diameter of the end of the transition section away from the cavitation flow section is 1.5 to 2.5 mm. The diameter of the cavitation flow section is 0.6 to 0.8 mm. The length of the cavitation flow section is 0.5 to 1.2 mm. The diameter of the end with a larger diameter of the outlet flow section is 0.8 to 2 mm. The length of the outlet flow section is 4 to 8 mm. The angle between the extension line of the side wall of the outlet flow section and the central axis of the outlet flow section is 2.25 to 3.25°.

[0019] Optionally, the angle between the extension line of the side wall of the transition section and the central axis is 30°. The diameter of the end of the transition section away from the cavitation flow section is 2.5 mm. The diameter of the cavitation flow section is 0.65 mm. The length of the cavitation flow section is 0.85 mm. The diameter of the end with a larger diameter of the outlet flow section is 1.17 mm. The length of the outlet flow section is 6 mm. The angle between the extension line of the side wall of the outlet flow section and the central axis of the outlet flow section is 2.5°.

[0020] Optionally, the angle between the extension line of the side wall of the transition section and the central axis is 45 to 75°. The diameter of the transition section away from the cavitation flow section is 1.5 to 2.5 mm. The diameter of the cavitation flow section is 0.4 to 0.8 mm. The length of the cavitation flow section is 0.5 to 1.2 mm. The length of the outlet flow section is 4 to 8 mm. The diameter of the end with a larger diameter of the outlet flow section is 1 to 1.4 mm. The diameter of the end with a smaller diameter of the outlet flow section is equal to the diameter of the cavitation flow section.

[0021] Optionally, the angle between the extension line of the side wall of the transition section and the central axis is 60°. The diameter of the transition section away from the cavitation flow section is 2.5 mm. The diameter of the cavitation flow section is 0.65 mm. The length of the cavitation flow section is 0.85 mm. The length of the outlet flow section is 6 mm. The diameter of the larger end of the outlet flow section is 1.17 mm.

[0022] Optionally, the diameter of the inlet flow section is 2 to 4 mm. The diameter of the cavitation flow section is 0.4 to 1 mm. The length of the cavitation flow section is 0.5 to 1.2 mm. The diameter of the outlet flow section is 1 to 3 mm. The length of the outlet flow section is 2 to 6 mm.

[0023] Optionally, the diameter of the inlet flow section is 4 mm, the diameter of the cavitation flow section is 0.7 mm, the length of the cavitation flow section is 1.2 mm, the diameter of the outlet flow section is 2 mm, and the length of the outlet flow section is 2.25 mm.

[0024] A second aspect of the present application provides a water flosser, comprising a handle, a pump body and a nozzle as described in the above technical solution, wherein the nozzle is mounted on the handle, and the pump body is connected to the inlet flow section of the nozzle.

[0025] The beneficial effects of the technical solution provided by the embodiment of the present application of the water flosser include at least: the flushing liquid can enter the cavitation flow section through the inlet flow section. The cross-sectional area of ​​the inlet flow section along the direction perpendicular to the flow of the flushing liquid is larger than the cross-sectional area of ​​the cavitation flow section along the direction perpendicular to the flow of the flushing liquid, so that the flushing liquid cavitates when entering the cavitation flow section, and bubbles are generated in the cavitation flow section, and the bubbles can participate in the flushing liquid cleaning of teeth and gums. The cavitation flow section provides space for the cavitation of the flushing liquid, which can increase the number of bubbles in the flushing liquid. The cross-sectional area of ​​the outlet flow section along the direction perpendicular to the flow of the flushing liquid is larger than the cross-sectional area of ​​the cavitation flow section along the direction perpendicular to the flow of the flushing liquid, so that the bubbles and the flushing liquid can be fully mixed, thereby improving the mixing efficiency of the bubbles and the flushing liquid, thereby improving the cleaning effect. Due to the participation of bubbles, the nozzle of the present application can reduce the pressure of the flushing liquid and improve the cleaning effect.

[0026] In summary, the nozzle of the present application causes cavitation of the flushing liquid by setting a cavitation flow section with a smaller cross-sectional area, and uses the outlet flow section to mix the bubbles generated by cavitation, so as to reduce the pressure of the flushing liquid and improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A partial cross-sectional schematic diagram of a nozzle provided in an embodiment of the present application;

[0029] Figure 2 Experimental photos of the nozzle without cavitation flow section provided for this application;

[0030] Figure 3 An experimental photo of a nozzle provided for this application;

[0031] Figure 4 A partial cross-sectional schematic diagram of another nozzle provided in an embodiment of the present application;

[0032] Figure 5 A partial cross-sectional schematic diagram of another nozzle provided in an embodiment of the present application;

[0033] Figure 6A partial cross-sectional schematic diagram of another nozzle provided in an embodiment of the present application;

[0034] Figure 7 A schematic diagram of a nozzle provided in an embodiment of the present application;

[0035] Figure 8 A schematic diagram of the structure of a nozzle provided in an embodiment of the present application;

[0036] Fig. 9 A schematic cross-sectional view of a nozzle provided in an embodiment of the present application;

[0037] Fig.10 A schematic diagram of the structure of a water flosser provided in an embodiment of the present application.

[0038] The reference numerals in the figures represent respectively:

[0039] 1. Main body; 100. Flow channel; 101. Inlet flow section; 1011. Transition section; 10111. Extension line; 10112. Central axis; 102. Cavitation flow section; 103. Outlet flow section;

[0040] 2. Handle.

[0041] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0044] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0045] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0046] The first aspect of the present application provides a nozzle, such as Figure 1 As shown, the nozzle includes a main body 1. The main body 1 is hollow inside to form a flow channel 100, and the flow channel 100 includes an inlet 1001 for the flushing liquid to flow in and an outlet 1002 for spraying the flushing liquid. The flow channel 100 includes an inlet flow section 101, a cavitation flow section 102 and an outlet flow section 103 arranged in sequence and connected in sequence in the flow direction of the flushing liquid. Any position in the inlet flow section 101 can be cut by a preset plane to form a first cross section, any position in the outlet flow section 103 can be cut by a preset plane to form a second cross section, and any position in the cavitation flow section 102 can be cut by a preset plane to form a third cross section. The size of the first cross section and the size of the second cross section are both greater than the size of the third cross section, wherein the preset plane refers to a plane perpendicular to the flow direction of the flushing liquid. The size of the third cross section corresponding to each position of at least a part of the cavitation flow section 102 along the direction perpendicular to the flow direction of the flushing liquid is the same.

[0047] It can be understood that the rinsing liquid can enter the cavitation flow section 102 through the inlet flow section 101. The cross-sectional area of ​​the inlet flow section 101 along the direction perpendicular to the flow of the rinsing liquid is larger than the cross-sectional area of ​​the cavitation flow section 102 along the direction perpendicular to the flow of the rinsing liquid, so that the rinsing liquid cavitates when entering the cavitation flow section 102, and bubbles are generated in the cavitation flow section 102, and the bubbles can participate in the cleaning of the teeth and gums by the rinsing liquid. The cavitation flow section 102 provides space for the cavitation of the rinsing liquid, which can increase the number of bubbles in the rinsing liquid. The cross-sectional area of ​​the outlet flow section 103 along the direction perpendicular to the flow of the rinsing liquid is larger than the cross-sectional area of ​​the cavitation flow section 102 along the direction perpendicular to the flow of the rinsing liquid, so that the bubbles and the rinsing liquid can be fully mixed, thereby improving the mixing efficiency of the bubbles and the rinsing liquid, thereby improving the cleaning effect. Due to the participation of bubbles, the nozzle of the present application can reduce the pressure of the rinsing liquid and improve the cleaning effect.

[0048] In the embodiments of the present application, the “cavitation” involved generally refers to the fact that during the movement of the flushing liquid, the cross-sectional area of ​​the pipe carrying the flushing liquid changes, resulting in a decrease in its local pressure, thereby causing bubbles to form inside the flushing liquid.

[0049] In some embodiments of the present application, the flow direction of the flushing liquid refers to the direction from the inlet 1001 through the inlet flow section 101 , the cavitation flow section 102 and the outlet flow section 103 in sequence, and out of the outlet 1002 .

[0050] In some embodiments of the present application, the flushing liquid can be purified water, tap water, etc.

[0051] In some embodiments of the present application, the irrigating liquid collides between the inlet flow section 101 and the cavitation flow section 102, so that part of the oxygen in the irrigating liquid escapes from the cavitation flow section 102, thereby forming bubbles. The bubbles burst when they come into contact with the teeth, gums and other parts, thereby achieving a cleaning effect on these parts.

[0052] In the embodiment of the present application, the main body 1 is a component for carrying the flushing liquid, and its material can be glass, silica gel, plastic, etc. Optionally, the material of the main body 1 is a transparent material.

[0053] In the embodiment of the present application, the inlet flow section 101 may extend to the edge of the main body 1 to introduce the flushing liquid from the outside into the cavitation flow section 102 .

[0054] In the embodiment of the present application, the outlet flow section 103 may extend to the edge of the main body 1 to guide the flushing liquid from the cavitation flow section 102 to the outside.

[0055] Optionally, the axis of the inlet flow section 101 , the axis of the cavitation flow section 102 , and the axis of the outlet flow section 103 are arranged collinearly.

[0056] In the embodiment of the present application, in order to achieve approximately the same cleaning effect, the flushing liquid pressure of the outlet flow section 103 of the nozzle without the cavitation flow section 102 is 14 grams, while the flushing liquid pressure of the outlet flow section 103 of the nozzle with the cavitation flow section 102 of the present application is 13 grams.

[0057] like Figure 2 As shown, Figure 2 The nozzle of the related art ejects a small amount of bubbles from the outlet flow section 103 of the nozzle, and most of the bubbles exist only in the central part of the flushing liquid. Figure 3 As shown, Figure 3 The nozzle of the present application has a large number of bubbles ejected from the outlet flow section 103 of the nozzle, and the bubbles are well mixed with the flushing liquid, and the existence time of the bubbles is also longer. Figure 2 The nozzle shown has a long bubble life.

[0058] In summary, the nozzle of the present application causes cavitation of the flushing liquid by providing a cavitation flow section 102 with a smaller cross-sectional area, and uses the outlet flow section 103 to mix the bubbles generated by cavitation, so as to reduce the pressure of the flushing liquid and improve the cleaning effect.

[0059] In some of the embodiments of this application, Figure 1 As shown, the size of the first cross section is greater than that of the second cross section. Such an arrangement can reduce the flushing liquid pressure of the outlet flow section 103.

[0060] It can be understood that, ignoring the loss and turbulence, in the process of the flushing liquid passing through the cavitation flow section 102 from the inlet flow section 101 and being ejected from the outlet flow section 103, the flow rate of the inlet flow section 101 is equal to the flow rate of the outlet flow section 103. According to the Bernoulli equation, the increase in flow rate is always accompanied by a decrease in pressure. The size of the first cross section is larger than the size of the second cross section, so that the flow rate of the flushing liquid in the outlet flow section 103 is larger than the flow rate of the flushing liquid in the inlet flow section 101, thereby reducing the pressure of the flushing liquid when it is ejected, so as to avoid excessive flushing liquid pressure from causing damage to the user's teeth and gums.

[0061] In some embodiments of the present application, the size of any one of the first cross section, the second cross section and the third cross section refers to the diameter.

[0062] In some embodiments of the present application, the size of any one of the first cross section, the second cross section and the third cross section refers to the area.

[0063] In some embodiments of the present application, the size of any one of the first cross section, the second cross section and the third cross section refers to the diameter and the area.

[0064] In some of the embodiments of this application, Figure 4 As shown, the inlet flow section 101 includes a transition section 1011 at one end close to the cavitation flow section 102, and the cross-sectional size of the transition section 1011 gradually decreases along the flow direction of the flushing liquid.

[0065] It can be understood that the transition section 1011 can guide the flushing liquid, so that the friction loss generated by the flushing liquid is small when it passes through the transition section 1011 and enters the cavitation flow section 102.

[0066] In some embodiments of the present application, an angle α between an extension line 10111 of a side wall of the transition section 1011 and a central axis 10112 of the transition section 1011 is greater than or equal to 75°.

[0067] It can be understood that such a configuration can reduce the friction loss of the flushing liquid in the process of passing through the transition section 1011 and entering the cavitation flow section 102, so as to improve the cavitation effect.

[0068] Optionally, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 of the transition section 1011 may be 75°, 80° or 85°, or other values ​​between 75 and 90°.

[0069] In some of the embodiments of this application, Figure 4As shown, the diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 1.5 to 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.6 to 0.8 mm. The length L2 of the cavitation flow section 102 is 0.5 to 1.2 mm. The end of the outlet flow section 103 with a smaller diameter is connected to the cavitation flow section 102, and the angle β between the extension line 10111 of the side wall of the outlet flow section 103 and the central axis 10112 of the outlet flow section 103 is 2.25 to 3.25°. The diameter of the end of the outlet flow section 103 close to the cavitation flow section 102 is equal to the diameter D2 of the cavitation flow section 102. The length L3 of the outlet flow section 103 is 4 to 8 mm.

[0070] It can be understood that the angle between the extension line of the side wall of the outlet flow section 103 and the central axis of the outlet flow section 103 is 2.5°, which is conducive to the mixing of bubbles and the flushing liquid, reduces the overflow of bubbles from the flushing liquid, and improves the cleaning effect on the gums and teeth.

[0071] Optionally, a diameter D3 ′ of an end of the outlet flow segment 103 away from the cavitation flow segment 102 is 1.17 mm.

[0072] Optionally, the diameter D1' of one end of the transition section 1011 away from the cavitation flow section 102 is 1.5 mm, 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm or 2.5 mm, or may be other values ​​between 1.5 and 2.5 mm.

[0073] Optionally, the diameter D2 of the cavitation flow segment 102 may be 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm or 0.85 mm, or may be other values ​​between 0.6 and 0.8 mm.

[0074] Optionally, the length L2 of the cavitation flow segment 102 is 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1 mm, 1.05 mm, 1.1 mm, 1.15 mm or 1.2 mm, or other values ​​between 0.5 and 1.2 mm.

[0075] Optionally, the end of the outlet flow segment 103 with a smaller diameter is connected to the cavitation flow segment 102, and the angle β between the extension line 10111 of the side wall of the outlet flow segment 103 and the central axis 10112 of the outlet flow segment 103 is 2.25°, 2.5°, 2.75°, 3° or 3.25°, or other values ​​between 2.25 and 3.25°.

[0076] Optionally, the length L3 of the outlet flow section 103 is 4 mm, 5 mm, 6 mm, 7 mm or 8 mm, or may be other values ​​between 4 and 8 mm.

[0077] In some embodiments of the present application, the diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.65 mm. The length L2 of the cavitation flow section 102 is 0.85 mm. The end of the outlet flow section 103 with a smaller diameter is connected to the cavitation flow section 102, and the angle β between the extension line of the side wall of the outlet flow section 103 and the central axis of the outlet flow section 103 is 2.5°. The length L3 of the outlet flow section 103 is 6 mm. Such an arrangement can improve the flushing effect of the nozzle of the present application.

[0078] In the embodiment of the present application, when the end of the transition section 1011 away from the cavitation flow section 102 is connected to other parts of the inlet flow section 101, the shape of the end of the transition section 1011 away from the cavitation flow section 102 and the connected part can be the same.

[0079] In some embodiments of the present application, an angle α between an extension line 10111 of a side wall of the transition section 1011 and a central axis 10112 of the transition section 1011 is less than or equal to 75°.

[0080] It can be understood that such a configuration can reduce the friction loss of the flushing liquid in the process of passing through the transition section 1011 and entering the cavitation flow section 102, so as to improve the passing efficiency of the flushing liquid.

[0081] Optionally, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 of the transition section 1011 can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 65°, 70° or 75°, or other values ​​between 0 and 75°.

[0082] In some of the embodiments of this application, Figure 5 As shown, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 of the transition section 1011 is 45 to 75°. The diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 1.5 to 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.4 to 0.8 mm. The length L2 of the cavitation flow section 102 is 0.5 to 1.2 mm. The diameter D3 of the outlet flow section 103 is 1 to 1.4 mm. The length L3 of the outlet flow section 103 is 4 to 8 mm.

[0083] Such an arrangement can improve the cleaning effect of the flushing liquid on the gums and teeth while reducing the flushing liquid pressure.

[0084] Optionally, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 of the transition section 1011 is 45°, 50°, 55°, 60°, 65°, 70° or 75°, or other values ​​between 45 and 75°.

[0085] Optionally, the diameter D1' of one end of the transition section 1011 away from the cavitation flow section 102 is 1.5 mm, 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm or 2.5 mm, or may be other values ​​between 1.5 and 2.5 mm.

[0086] Optionally, the diameter D2 of the cavitation flow segment 102 may be 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm or 0.8 mm, or may be other values ​​between 0.4 and 0.8 mm.

[0087] Optionally, the length L2 of the cavitation flow segment 102 is 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1 mm, 1.05 mm, 1.1 mm, 1.15 mm or 1.2 mm, or other values ​​between 0.5 and 1.2 mm.

[0088] Optionally, the diameter D3 of the outlet flow section 103 is 1 mm, 1.1 mm, 1.2 mm, 1.3 mm or 1.4 mm, or may be other values ​​between 1 and 1.4 mm.

[0089] Optionally, the length L3 of the outlet flow section 103 is 4 mm, 5 mm, 6 mm, 7 mm or 8 mm, or may be other values ​​between 4 and 8 mm.

[0090] In some embodiments of the present application, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 of the transition section 1011 is 60°. The diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.65 mm. The length L2 of the cavitation flow section 102 is 0.85 mm. The diameter D3 of the outlet flow section 103 is 1.17 mm. The length L3 of the outlet flow section 103 is 5 mm. Such a setting can increase the number of bubbles generated by the nozzle of the present application.

[0091] In the embodiment of the present application, when the end of the transition section 1011 away from the cavitation flow section 102 is connected to other parts of the inlet flow section 101, the shape of the end of the transition section 1011 away from the cavitation flow section 102 and the connected part can be the same.

[0092] In some of the embodiments of this application, Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the extension line of the side wall of the outlet flow segment 103 forms an angle with the central axis of the outlet flow segment 103, the end of the outlet flow segment 103 with a smaller diameter is connected to the cavitation flow segment 102, and the end of the outlet flow segment 103 with a larger diameter extends to the edge of the main body 1. The outlet flow segment 103 configured in this way provides sufficient mixing space for bubbles and the rinsing liquid, which can improve the mixing efficiency of bubbles and the rinsing liquid, thereby improving the cleaning effect on gums and teeth.

[0093] In some of the embodiments of this application, Figure 6 and Figure 7 As shown, the angle α formed by the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 is 15 to 45°. The diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 1.5 to 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.6 to 0.8 mm. The length L2 of the cavitation flow section 102 is 0.5 to 1.2 mm. The diameter D3' of the larger diameter end of the outlet flow section 103 is 0.8 to 2 mm. The length L3 of the outlet flow section 103 is 4 to 8 mm. The angle β formed by the extension line of the side wall of the outlet flow section 103 and the central axis of the outlet flow section 103 is 2.25 to 3.25°. Such an arrangement can improve the cleaning effect of the flushing liquid on the gums and teeth while reducing the flushing liquid pressure.

[0094] Optionally, the diameter D1' of one end of the transition section 1011 away from the cavitation flow section 102 is 1.5 mm, 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm or 2.5 mm, or may be other values ​​between 1.5 and 2.5 mm.

[0095] Optionally, the diameter D2 of the cavitation flow segment 102 may be 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm or 0.8 mm, or may be other values ​​between 0.6 and 0.8 mm.

[0096] Optionally, the length L2 of the cavitation flow segment 102 is 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1 mm, 1.05 mm, 1.1 mm, 1.15 mm or 1.2 mm, or other values ​​between 0.5 and 1.2 mm.

[0097] Optionally, the diameter D3' of the end with a larger diameter of the outlet flow section 103 is 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm or 2 mm, or other values ​​between 0.8 and 2 mm.

[0098] Optionally, the length L3 of the outlet flow section 103 is 4 mm, 5 mm, 6 mm, 7 mm or 8 mm, or may be other values ​​between 4 and 8 mm.

[0099] Optionally, the angle β between the extension line of the side wall of the outlet flow section 103 and the central axis of the outlet flow section 103 is 2.25°, 2.5°, 2.75°, 3° or 3.25°, or other values ​​between 2.25 and 3.25°.

[0100] In some embodiments of the present application, the angle α between the extended line 10111 of the side wall of the transition section 1011 and the central axis 10112 is 30°. The diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.65 mm. The length L2 of the cavitation flow section 102 is 0.85 mm. The diameter D3' of the larger diameter end of the outlet flow section 103 is 1.17 mm. The length L3 of the outlet flow section 103 is 6 mm. The angle β between the extended line of the side wall of the outlet flow section 103 and the central axis of the outlet flow section 103 is 2.5°. Such an arrangement can improve the cleaning performance of the nozzle of the present application.

[0101] In the embodiment of the present application, when the end of the transition section 1011 away from the cavitation flow section 102 is connected to other parts of the inlet flow section 101, the shape of the end of the transition section 1011 away from the cavitation flow section 102 and the connected part can be the same.

[0102] In some of the embodiments of this application, Figure 7 As shown, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 is 45 to 75°. The diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 1.5 to 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.4 to 0.8 mm. The length L2 of the cavitation flow section 102 is 0.5 to 1.2 mm. The length L3 of the outlet flow section 103 is 4 to 8 mm. The diameter D3' of the end with a larger diameter of the outlet flow section 103 is 1 to 1.4 mm. The diameter of the end with a smaller diameter of the outlet flow section 103 is equal to the diameter D2 of the cavitation flow section 102. Such an arrangement can improve the cleaning effect of the flushing liquid on the gums and teeth while reducing the flushing liquid pressure.

[0103] Optionally, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 of the transition section 1011 is 45°, 50°, 55°, 60°, 65°, 70° or 75°, or other values ​​between 45 and 75°.

[0104] Optionally, the diameter D1' of one end of the transition section 1011 away from the cavitation flow section 102 is 1.5 mm, 1.7 mm, 1.9 mm, 2.1 mm, 2.3 mm or 2.5 mm, or may be other values ​​between 1.5 and 2.5 mm.

[0105] Optionally, the diameter D2 of the cavitation flow segment 102 may be 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm or 0.8 mm, or may be other values ​​between 0.4 and 0.8 mm.

[0106] Optionally, the length L2 of the cavitation flow segment 102 is 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1 mm, 1.05 mm, 1.1 mm, 1.15 mm or 1.2 mm, or other values ​​between 0.5 and 1.2 mm.

[0107] Optionally, the length L3 of the outlet flow section 103 is 4 mm, 5 mm, 6 mm, 7 mm or 8 mm, or may be other values ​​between 4 and 8 mm.

[0108] Optionally, the diameter D3' of the end with a larger diameter of the outlet flow section 103 is 1 mm, 1.1 mm, 1.2 mm, 1.3 mm or 1.42 mm, or other values ​​between 1 and 1.4 mm.

[0109] In some embodiments of the present application, the angle α between the extension line 10111 of the side wall of the transition section 1011 and the central axis 10112 is 60°. The diameter D1' of the end of the transition section 1011 away from the cavitation flow section 102 is 2.5 mm. The diameter D2 of the cavitation flow section 102 is 0.65 mm. The length L2 of the cavitation flow section 102 is 0.85 mm. The length L3 of the outlet flow section 103 is 6 mm. The diameter D3' of the end with a larger diameter of the outlet flow section 103 is 1.17 mm. Such a setting can improve the cleaning effect of the flushing liquid on the gums and teeth while reducing the flushing liquid pressure.

[0110] In some of the embodiments of this application, Figure 4 , Figure 6 and Figure 7As shown, the outlet flow segment 103 is in a truncated cone shape, the end of the outlet flow segment 103 with a smaller diameter is connected to the cavitation flow segment 102, and the angle between the extension line of the side wall of the outlet flow segment 103 and the central axis of the outlet flow segment 103 is less than or equal to 2.5°.

[0111] The truncated cone-shaped outlet flow section 103 provides sufficient mixing space for the bubbles and the flushing liquid, which can improve the mixing efficiency of the bubbles and the flushing liquid, thereby improving the cleaning effect on the gums and teeth.

[0112] Optionally, the angle β between the side wall extension line of the outlet flow section 103 and the central axis of the outlet flow section 103 may be 0.5°, 1°, 1.5°, 2° or 2.5°, or other values ​​between 0 and 2.5°.

[0113] In some embodiments of the present application, the shape of each longitudinal section of the cavitation flow section 102 is the same along the flow direction of the flushing liquid in the cavitation flow section 102. Such a configuration can improve the passing efficiency of the flushing liquid and facilitate the mixing of the flushing liquid and the bubbles.

[0114] Optionally, the cavitation flow segment 102 may be in a cylindrical, cubic or other geometric shape.

[0115] In some of the embodiments of this application, Figure 1 As shown, optionally, the diameter D1 of the inlet flow segment 101 is 2 to 4 mm. The diameter D2 of the cavitation flow segment 102 is 0.4 to 1 mm. The length L2 of the cavitation flow segment 102 is 0.5 to 1.2 mm. The diameter D3 of the outlet flow segment 103 is 1 to 3 mm. The length L3 of the outlet flow segment 103 is 2 to 6 mm.

[0116] It is understandable that the inlet flow section 101 configured in this way has a larger cross-sectional area, so that the flushing liquid can cavitate and generate bubbles when entering the cavitation flow section 102. The outlet flow section 103 with a larger cross-sectional area can also mix the bubbles with the flushing liquid, thereby improving the cleaning effect of the flushing liquid.

[0117] Optionally, the diameter D1' of one end of the transition section 1011 away from the cavitation flow section 102 is 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, 3.2 mm, 3.4 mm, 3.6 mm, 3.8 mm or 4 mm, or other values ​​between 2 and 4 mm.

[0118] Optionally, the diameter D2 of the cavitation flow segment 102 may be 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm or 1 mm, or may be other values ​​between 0.4 and 1 mm.

[0119] Optionally, the length L2 of the cavitation flow segment 102 is 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm or 1.2 mm, or other values ​​between 0.5 and 1.2 mm.

[0120] Optionally, the diameter D3 of the outlet flow section 103 is 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm, and may also be other values ​​between 1 and 3 mm.

[0121] Optionally, the length L3 of the outlet flow section 103 is 2 mm, 3 mm, 4 mm, 5 mm or 6 mm, or may be other values ​​between 2 and 6 mm.

[0122] In the above application embodiment, the diameter of the inlet flow section 101 is 4 mm. The diameter of the cavitation flow section 102 is 0.7 mm. The length of the cavitation flow section 102 is 1.2 mm. The diameter of the outlet flow section 103 is 2 mm. The length of the outlet flow section 103 is 2.25 mm. The nozzle arranged in this way has a good flushing effect.

[0123] The second aspect of the present application provides a dental flosser, such as Figure 8 , Fig. 9 and Fig.10 As shown, the oral irrigator comprises a handle 2, a pump body and a nozzle as described in the embodiment, the nozzle is mounted on the handle, and the pump body is connected to the inlet flow section 101 of the nozzle. It can be understood that since the same nozzle as the above embodiment is used, the oral irrigator of the present application has the same technical effect as the above embodiment, which will not be repeated here.

[0124] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0125] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0126] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A nozzle, characterized in that: The nozzle comprises a main body (1), wherein: The main body (1) is hollow inside to form a flow channel (100), and the flow channel (100) comprises an inlet (1001) for a flushing liquid to flow in and an outlet (1002) for spraying the flushing liquid; The flow channel (100) comprises an inlet flow section (101), a cavitation flow section (102) and an outlet flow section (103) which are arranged in sequence and connected in sequence in the flow direction of the flushing liquid; Any position in the inlet flow section (101) can be cut by a preset plane to form a first cross section, any position in the outlet flow section (103) can be cut by a preset plane to form a second cross section, and any position in the cavitation flow section (102) can be cut by a preset plane to form a third cross section, and the size of the first cross section and the size of the second cross section are both larger than the size of the third cross section, wherein the preset plane refers to a plane perpendicular to the flow direction of the flushing liquid; The dimensions of the third cross-sections corresponding to various positions of at least a portion of the cavitation flow segment (102) along a direction perpendicular to the flow of the flushing liquid are all the same.

2. The nozzle according to claim 1, characterized in that The size of the first cross section is greater than the size of the second cross section.

3. The nozzle according to claim 1 or 2, characterized in that: in, The size of any one of the first cross section, the second cross section and the third cross section refers to at least one of a diameter and an area.

4. The nozzle according to claim 1, characterized in that The inlet flow section (101) comprises a transition section (1011) at one end close to the cavitation flow section (102), and the cross-sectional size of the transition section (1011) gradually decreases along the flow direction of the flushing liquid.

5. The nozzle according to claim 4, characterized in that The angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) of the transition section (1011) is greater than or equal to 75°.

6. The nozzle according to claim 5, characterized in that The diameter of the end of the transition section (1011) away from the cavitation flow section (102) is 1.5 to 2.5 mm; The diameter of the cavitation flow section (102) is 0.6 to 0.8 mm; The length of the cavitation flow segment (102) is 0.5 to 1.2 mm; The end of the outlet flow section (103) with a smaller diameter is connected to the cavitation flow section (102), and the angle between the extension line (10111) of the side wall of the outlet flow section (103) and the central axis (10112) of the outlet flow section (103) is 2.25 to 3.25°; The diameter of one end of the outlet flow section (103) close to the cavitation flow section (102) is equal to the diameter of the cavitation flow section (102); The length of the outlet flow section (103) is 4 to 8 mm.

7. The nozzle according to claim 6, characterized in that The diameter of the end of the transition section (1011) away from the cavitation flow section (102) is 2.5 mm; The diameter of the cavitation flow section (102) is 0.65 mm; The length of the cavitation flow section (102) is 0.85 mm; The end of the outlet flow section (103) with a smaller diameter is connected to the cavitation flow section (102), and the angle between the extension line of the side wall of the outlet flow section (103) and the central axis of the outlet flow section (103) is 2.5°; The length of the outlet flow section (103) is 6 mm.

8. The nozzle according to claim 4, characterized in that The angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) of the transition section (1011) is less than or equal to 75°.

9. The nozzle according to claim 8, characterized in that The included angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) of the transition section (1011) is 45 to 75°; The diameter of the end of the transition section (1011) away from the cavitation flow section (102) is 1.5 to 2.5 mm; The diameter of the cavitation flow section (102) is 0.4 to 0.8 mm; The length of the cavitation flow segment (102) is 0.5 to 1.2 mm; The diameter of the outlet flow section (103) is 1 to 1.4 mm; The length of the outlet flow section (103) is 4 to 8 mm.

10. The nozzle according to claim 9, characterized in that The included angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) of the transition section (1011) is 60°; The diameter of the end of the transition section (1011) away from the cavitation flow section (102) is 2.5 mm; The diameter of the cavitation flow section (102) is 0.65 mm; The length of the cavitation flow section (102) is 0.85 mm; The diameter of the outlet flow section (103) is 1.17 mm; The length of the outlet flow section (103) is 5 mm.

11. The nozzle according to claim 8, characterized in that An extension line of the side wall of the outlet flow section (103) forms an angle with the central axis of the outlet flow section (103); an end of the outlet flow section (103) with a smaller diameter is connected to the cavitation flow section (102); and an end of the outlet flow section (103) with a larger diameter extends to the edge of the main body (1).

12. The nozzle according to claim 11, characterized in that The included angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) is 15 to 45°; The diameter of the end of the transition section (1011) away from the cavitation flow section (102) is 1.5 to 2.5 mm; The diameter of the cavitation flow section (102) is 0.6 to 0.8 mm; The length of the cavitation flow segment (102) is 0.5 to 1.2 mm; The diameter of the larger end of the outlet flow section (103) is 0.8 to 2 mm; The length of the outlet flow section (103) is 4 to 8 mm; The included angle between the extended line of the side wall of the outlet flow section (103) and the central axis of the outlet flow section (103) is 2.25 to 3.25°.

13. The nozzle according to claim 12, characterized in that The included angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) is 30°; The diameter of the end of the transition section (1011) away from the cavitation flow section (102) is 2.5 mm; The diameter of the cavitation flow section (102) is 0.65 mm; The length of the cavitation flow section (102) is 0.85 mm; The diameter of the larger end of the outlet flow section (103) is 1.17 mm; The length of the outlet flow section (103) is 6 mm; The included angle between the extension line of the side wall of the outlet flow section (103) and the central axis of the outlet flow section (103) is 2.5°.

14. The nozzle according to claim 11, characterized in that The included angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) is 45 to 75°; The diameter of the transition section (1011) at one end away from the cavitation flow section (102) is 1.5 to 2.5 mm; The diameter of the cavitation flow section (102) is 0.4 to 0.8 mm; The length of the cavitation flow segment (102) is 0.5 to 1.2 mm; The length of the outlet flow section (103) is 4 to 8 mm; The diameter of the larger end of the outlet flow section (103) is 1 to 1.4 mm; The diameter of the end with a smaller diameter of the outlet flow section (103) is equal to the diameter of the cavitation flow section (102).

15. The nozzle according to claim 14, characterized in that The included angle between the extension line (10111) of the side wall of the transition section (1011) and the central axis (10112) is 60°; The diameter of the transition section (1011) at one end away from the cavitation flow section (102) is 2.5 mm; The diameter of the cavitation flow section (102) is 0.65 mm; The length of the cavitation flow section (102) is 0.85 mm; The length of the outlet flow section (103) is 6 mm; The diameter of the larger end of the outlet flow section (103) is 1.17 mm.

16. The nozzle according to claim 1, characterized in that The diameter of the inlet flow section (101) is 2 to 4 mm; The diameter of the cavitation flow section (102) is 0.4 to 1 mm; The length of the cavitation flow segment (102) is 0.5 to 1.2 mm; The diameter of the outlet flow section (103) is 1 to 3 mm; The length of the outlet flow section (103) is 2 to 6 mm.

17. The nozzle according to claim 16, characterized in that The diameter of the inlet flow section (101) is 4 mm; The diameter of the cavitation flow section (102) is 0.7 mm; The length of the cavitation flow section (102) is 1.2 mm; The diameter of the outlet flow section (103) is 2 mm; The length of the outlet flow section (103) is 2.25 mm.

18. A dental flosser, characterized in that: The oral irrigator comprises a handle (2), a pump body and a nozzle according to any one of claims 1 to 17, wherein the nozzle is mounted on the handle, and the pump body is connected to the inlet flow section (101) of the nozzle.

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