Spray head assembly and spraying device

Abstract

The utility model provides a spray head assembly and a spraying device, the spray head assembly comprises a flow guide pipe, an end cover and an atomization structure, and the flow guide pipe is provided with a flow guide pipe cavity; the end cover is provided with a mist outlet, the end cover is detachably connected with the flow guide pipe, the end cover and the flow guide pipe jointly form a mounting cavity, and the mounting cavity is communicated with the mist outlet; the atomization structure is located in the mounting cavity, an atomization area is arranged on the end face, in the first direction, of the atomization structure, a flow guide channel is formed between the side wall of the atomization structure and the cavity wall of the mounting cavity in the first direction, and the flow guide pipe cavity, the flow guide channel, the atomization area and the mist outlet are sequentially communicated. According to the nozzle assembly and the spraying device, the atomization structure is convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] This application relates to the field of hygiene and cleaning technology, specifically to a nozzle assembly and a spraying device. Background Technology

[0002] The nozzle assembly is the water outlet structure installed at the outlet end of spray devices such as nasal irrigators and nebulizers, used to provide liquid atomization. The atomizing structure inside the nozzle assembly needs to be cleaned or replaced regularly to prevent excessive accumulation of dirt and clogging of the water passages. Chinese patent application number 202321142053.8 discloses an atomizing nasal irrigator, including an infusion section, a guide tube, and at least two atomizing elements. The guide tube includes a first section and a second section connected together. The atomizing element is a replaceable atomizing core that can be inserted and installed at the end of the second section to atomize the flowing nasal irrigator solution. Although the above patent allows for the replacement of the atomizing elements, the connection between the atomizing element and the second section is a plug-in connection, which is difficult to install and remove, and can easily damage the product during installation and removal. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a nozzle assembly that allows for easier disassembly and assembly of the atomizing structure, effectively preventing damage to the nozzle assembly during disassembly and assembly.

[0004] This application also proposes a spraying device having the above-described nozzle assembly.

[0005] The nozzle assembly according to an embodiment of this application includes a guide tube, an atomizing structure, and an end cap;

[0006] The flow guide tube is provided with a flow guide tube cavity;

[0007] The end cap is provided with a mist outlet. The end cap is detachably connected to the guide tube and together with the guide tube, they form an installation cavity. The installation cavity is connected to the mist outlet.

[0008] The atomizing structure is located inside the mounting cavity. The atomizing area is provided on the end face of the atomizing structure in the first direction. Along the first direction, a flow guiding channel is formed between the side wall of the atomizing structure and the cavity wall of the mounting cavity. The flow guiding cavity, the flow guiding channel, the atomizing area and the mist outlet are connected in sequence.

[0009] The nozzle assembly according to the embodiments of this application has at least the following beneficial effects: the end cap and the guide tube are detachably connected. Connecting the end cap and the guide tube fixes the atomizing structure within the mounting cavity. The guide tube cavity, the guide channel, the atomizing zone, and the mist outlet are sequentially connected to guide liquid flow and atomize the liquid through mutual impact within the atomizing zone. The mist outlet is used to spray the atomized liquid, ensuring the atomization function of the nozzle assembly. Furthermore, separating the end cap from the guide tube allows the atomizing structure to be removed from the mounting cavity for replacement or cleaning. Therefore, in this application, the connection between the guide tube and the end cap enables the fixing and release of the atomizing structure, avoiding excessive wear caused by plug-in connections during assembly and disassembly, and thus extending the service life of the nozzle assembly.

[0010] According to some embodiments of this application, the end cap is provided with a first receiving cavity and a second receiving cavity. Along a first direction, the first receiving cavity and the second receiving cavity are arranged sequentially and connected. The first receiving cavity is connected to the mist outlet. One end of the guide tube is disposed in the second receiving cavity. One end of the guide tube and the cavity wall of the first receiving cavity enclose the installation cavity. The atomizing structure includes a connected atomizing body and a limiting part. Along the first direction, the end face of the atomizing body is provided with an atomizing area. The atomizing area is located in the first receiving cavity. With the first direction as the axis, the limiting part is distributed around the outer peripheral wall of the atomizing body, and the atomizing body and the limiting part together define an avoidance groove.

[0011] In the first direction, the guide tube abuts against one side of the limiting part, and the cavity wall of the first receiving cavity abuts against the opposite side of the limiting part.

[0012] According to some embodiments of this application, a portion of the atomizing body is located in the guide tube cavity, and another portion of the atomizing body is located in the first receiving cavity. The atomizing body is provided with two atomizing zones, and the positions of the two atomizing zones are symmetrically arranged relative to the limiting portion along the first direction.

[0013] According to some embodiments of this application, the atomizing zone includes an atomizing groove and a flow channel. The flow channel is connected to one end of the flow channel, and the other end of the flow channel is connected to the atomizing groove. The opening of the atomizing groove faces the mist outlet, and the top of the atomizing groove abuts against the end cap along the first direction.

[0014] According to some embodiments of this application, the flow channel extends from one end of the flow channel away from the flow tube cavity to the atomizing tank, and the flow channel is transversely cut along a plane perpendicular to the extension direction of the flow channel, and the cross-sectional area of ​​the flow channel gradually decreases.

[0015] According to some embodiments of this application, the atomizing zone includes at least two flow channels, each flow channel being distributed at intervals around the outer periphery of the atomizing tank, each flow channel including a flow wall, each flow wall including a water outlet end near the atomizing tank, each water outlet end being connected to the center of the atomizing tank defining a plurality of first lines, each flow wall having an angle with the connected first lines, and all angles being equal, and at least two flow walls being arranged parallel to each other.

[0016] According to some embodiments of this application, the atomizing structure includes a flow guide wall and a limiting wall, the limiting wall abutting against the cavity wall of the mounting cavity, and a gap between the flow guide wall and the cavity wall of the mounting cavity to enclose the flow guide channel.

[0017] According to some embodiments of this application, the atomizing structure includes multiple guide walls and multiple limiting walls. With a first direction as the axis, the guide walls and limiting walls are distributed around the atomizing structure at intervals. Each guide wall has a gap with the cavity wall of the mounting cavity to enclose multiple guide channels.

[0018] According to some embodiments of this application, the mist outlet includes a first orifice segment and a second orifice segment, the first orifice segment and the second orifice segment are connected, the first orifice segment is located on the side of the end cap close to the atomizing structure, the second orifice segment is located on the side of the end cap away from the atomizing structure, the orifice diameter of the first orifice segment towards the second orifice segment gradually decreases, and the orifice diameter of the second orifice segment towards the first orifice segment gradually decreases.

[0019] Alternatively, the mist outlet includes a first section, a second section, and a third section. One end of the third section is connected to the first section, and the other end of the third section is connected to the second section. The first section is located on the side of the third section closer to the atomizing structure, and the second section is located on the side of the third section away from the second section. The diameter of the first section gradually decreases towards the third section, and the diameter of the second section gradually decreases towards the third section.

[0020] The spraying device according to the embodiments of this application includes a liquid storage component and a nozzle assembly as described in any of the above embodiments. The liquid storage component is provided with a liquid storage chamber, the nozzle assembly is connected to the liquid storage component, and the guide tube cavity is in communication with the liquid storage chamber.

[0021] The spraying device according to the embodiments of this application has at least the following beneficial effects: the nozzle assembly is used to atomize the liquid flowing into the guide tube cavity and spray it out. The end cap and the guide tube are detachably connected. The release and fixation of the limiting part can be realized by disassembling and assembling the end cap and the guide tube, thereby realizing the disassembly and assembly of the atomizing structure. This makes the disassembly and maintenance of the atomizing structure more convenient, effectively avoids damage to the nozzle assembly during disassembly and maintenance, and helps to ensure the cleanliness of the spraying device and extend the service life of the spraying device.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the nozzle assembly according to an embodiment of this application;

[0025] Figure 2 This is an exploded view of the nozzle assembly according to an embodiment of this application;

[0026] Figure 3 This is a cross-sectional view of the nozzle assembly according to an embodiment of this application;

[0027] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the atomization structure in an embodiment of this application;

[0029] Figure 6 This is a cross-sectional view of the end cap according to an embodiment of this application;

[0030] Figure 7 This is a top view of the atomization structure according to an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the assembly of the end cap and the atomizing structure according to an embodiment of this application;

[0032] Figure 9 This is a schematic diagram of the assembly of the guide tube and the atomizing structure according to an embodiment of this application;

[0033] Figure 10 for Figure 9 A magnified view of a portion of point B in the middle.

[0034] Reference numerals: 100 for the guide tube, 110 for the guide tube cavity;

[0035] Atomizing structure 200, atomizing body 210, first main body part 211, first atomizing area 2111, atomizing groove 2112, flow channel 2113, flow channel 2114, second main body part 212, second atomizing area 2121, limiting part 220, clearance groove 230, flow guiding channel 240, flow guiding wall 250, limiting wall 260;

[0036] End cap 300, mist outlet 310, first hole section 311, second hole section 312, third hole section 313, first receiving cavity 320, second receiving cavity 330. Detailed Implementation

[0037] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0038] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0039] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0041] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The embodiments of this application are described below with reference to the accompanying drawings:

[0043] refer to Figures 1 to 6 According to an embodiment of this application, a nozzle assembly is used to guide the flow of liquid and atomize the liquid before spraying it out. The nozzle assembly includes a guide tube 100, an atomizing structure 200, and an end cap 300. The guide tube 100 is provided with a guide tube cavity 110, which is used to connect to the liquid storage cavity of the spray device. Liquid in the liquid storage cavity can flow into the nozzle assembly along the guide tube cavity 110.

[0044] The end cap 300 is provided with a mist outlet 310. The end cap 300 is detachably connected to the guide tube 100 and together with the guide tube 100 forms an installation cavity. The installation cavity is connected to the mist outlet 310. The atomizing structure 200 is located in the installation cavity. The end cap 300 is connected to the guide tube 100 to fix the atomizing structure 200 in the installation cavity. The atomizing structure 200 can be released by disassembling the end cap 300 and the guide tube 100. Thus, the atomizing structure 200 can be disassembled and assembled by disassembling and assembling the end cap 300 and the guide tube 100, making the disassembly, maintenance or replacement of the atomizing structure 200 more convenient. Compared with the method of plugging the atomizing structure 200 and the guide tube 100 together, it can effectively avoid wear on the atomizing structure 200 during disassembly and assembly, which is beneficial to extending the service life of the nozzle assembly.

[0045] The atomizing structure 200 has an atomizing zone on its end face in the first direction. Along the first direction, a flow channel 240 is formed between the side wall of the atomizing structure 200 and the cavity wall of the mounting cavity. The flow channel 240, the flow tube 110, the flow channel 240, the atomizing zone and the mist outlet 310 are connected in sequence to guide the flow of liquid. The liquid flows from the flow channel 240 into the flow channel 110 and then into the atomizing zone. The liquid impacts each other in the atomizing zone to achieve atomization. The atomized liquid is sprayed out from the mist outlet 310.

[0046] refer to Figures 1 to 6 The end cap 300 is provided with a first receiving cavity 320 and a second receiving cavity 330. Along the first direction, the first receiving cavity 320 and the second receiving cavity 330 are arranged sequentially and connected. The first receiving cavity 320 is connected to the mist outlet 310. One end of the guide tube 100 is disposed in the second receiving cavity 330, and one end of the guide tube 100 and the cavity wall of the first receiving cavity 320 enclose a mounting cavity. The atomizing structure 200 includes a connected atomizing body 210 and a limiting part 220. Along the first direction, the end face of the atomizing body 210 is provided with an atomizing area, which is located in the first receiving cavity 320. In the first direction, the limiting part 220 is distributed around the outer peripheral wall of the atomizing body 210, and the atomizing body 210 and the limiting part 220 together define the avoidance groove 230. Along the first direction, the guide tube 100 abuts against one side of the limiting part 220, and the cavity wall of the first receiving cavity 320 abuts against the opposite side of the limiting part 220, thereby fixing the atomizing structure 200. On the basis of ensuring the fixing of the atomizing structure 200, the avoidance groove 230 is set to prevent the limiting part 220 from blocking the guide channel 240, thus ensuring the atomization and spraying functions of the nozzle assembly.

[0047] Therefore, once the guide tube 100 is separated from the end cap 300, the atomizing structure 200 can be released, thus enabling the disassembly of the atomizing structure 200. The nozzle assembly of this application is more convenient and quick to disassemble and maintain the atomizing structure 200, facilitating timely cleaning of dirt accumulation or blockage in the nozzle assembly. Compared with the method of disassembly between the atomizing structure 200 and the guide tube 100 through plug-in connection, this method avoids excessive wear caused by plug-in connection between the atomizing structure 200 and the guide tube 100, which is beneficial to extending the service life of the nozzle assembly.

[0048] refer to Figures 1 to 6 Specifically, the end cap 300 and the guide tube 100 can be detachably connected by means of threaded connection, magnetic connection and snap-fit ​​connection. Thus, the atomizing structure 200 is fixed when the end cap 300 is connected to the guide tube 100, and the atomizing structure 200 is released when the end cap 300 is separated from the guide tube 100, which facilitates the maintenance or replacement of the atomizing structure 200.

[0049] Taking the threaded connection between the end cap 300 and the guide tube 100 as an example, the outer wall of the guide tube 100, which is used to fix one end of the atomizing structure 200, is threaded, and the inner wall of the second receiving cavity 330 is threaded. The end cap 300 can rotate relative to the guide tube 100 with the first direction as the axis, realizing the detachable connection between the end cap 300 and the guide tube 100. Furthermore, the atomizing structure 200 can be fixed or released by twisting the end cap 300, making the disassembly and maintenance of the atomizing structure 200 more convenient. The threaded connection also allows for adjustment of the tightness of the fixation of the atomizing structure 200, effectively avoiding poor installation such as leakage or shaking caused by a loose fixation of the atomizing structure 200, or preventing the limiting part 220 from being damaged due to excessive compression caused by an overly tight fixation of the atomizing structure 200.

[0050] refer to Figures 1 to 4 In other embodiments, the flow guide cavity 110 and the flow guide channel 240 are cross-sectioned by a plane perpendicular to the first direction. The cross-sectional area of ​​the flow guide channel 240 is smaller than that of the flow guide cavity 110. When liquid flows from the flow guide cavity 110 into the flow guide channel 240, the smaller cross-sectional area of ​​the flow guide channel 240 increases the flow speed of the liquid. Consequently, when the liquid flows into the atomization zone through the flow guide channel 240, it has a greater impact force, and the atomization of the liquid is more thorough.

[0051] refer to Figures 1 to 3 In other embodiments, the outer peripheral wall of the end cap 300 is composed of multiple side surfaces with the same dimensions, that is, each side surface has the same length and width, and there is an included angle between adjacent side surfaces. For example, the end cap 300 can be a hexagonal end cap 300 or an octagonal end cap 300, etc., which makes it easier to twist the end cap 300 and makes it easier to disassemble and assemble the atomizing structure 200.

[0052] refer to Figures 2 to 6 In other embodiments, a portion of the atomizing body 210 is located in the first receiving cavity 320, and another portion of the atomizing body 210 is located in the guide tube cavity 110 (the portion of the guide tube cavity 110 used to receive the atomizing body 210 can be understood as part of the mounting cavity). Through the cooperation between the atomizing body 210 and the guide tube 100, the relative position between the limiting part 220 and the guide tube 100 can be determined, facilitating the assembly between the atomizing body 210 and the guide tube 100. There is a gap between the atomizing body 210 and the tube wall of the guide tube 100 to define a portion of the guide channel 240, and there is also a gap between the atomizing body 210 and the cavity wall of the first receiving cavity 320 to define another portion of the guide channel 240. The two portions are connected by the clearance groove 230.

[0053] It should be noted that the atomizing body 210 and the guide tube cavity 110 can be fitted with a clearance fit or a transition fit. When installing the atomizing body 210, the atomizing body 210 is inserted into the guide tube cavity 110, so that the atomizing structure 200 and the guide tube 100 have a definite relative position. Then, the end cap 300 is connected to the guide tube 100 to fix the atomizing structure 200.

[0054] refer to Figures 4 to 8 In some embodiments, a portion of the atomizing body 210 is located within the guide tube cavity 110, and another portion of the atomizing body 210 is located within the first receiving cavity 320. The atomizing body 210 has two atomizing zones. Along the first direction, the positions of the two atomizing zones are symmetrically arranged relative to the limiting part 220, so that when any end of the atomizing body 210 is inserted into the guide tube cavity 110, the end located in the first receiving cavity 320 is provided with an atomizing zone, ensuring the communication between the atomizing zone and the mist outlet 310, and realizing the mist output of the nozzle assembly. Thus, when assembling the atomizing structure 200, there is no need to additionally confirm the position of the atomizing zone on the atomizing body 210, providing a foolproof assembly function and further improving the convenience of assembling the atomizing structure 200.

[0055] For example, the atomizing zone may include a first atomizing zone 2111 and a second atomizing zone 2121. Along the first direction, one end face of the atomizing body 210 is provided with the first atomizing zone 2111, and the opposite end face of the atomizing body 210 is provided with the second atomizing zone 2121. Along the first direction, the position of the second atomizing zone 2121 is symmetrically arranged with respect to the position of the first atomizing zone 2111 relative to the limiting part 220, so that when any end of the atomizing body 210 is installed in the guide tube cavity 110, one of the first atomizing zone 2111 and the second atomizing zone 2121 is located in the first receiving cavity 320. The flow path of the liquid may be the guide tube cavity 110, the guide channel 240, the first atomizing zone 2111 and the mist outlet 310, or the guide tube cavity 110, the guide channel 240, the second atomizing zone 2121 and the mist outlet 310. Therefore, the symmetrical arrangement of the first atomizing zone 2111 and the second atomizing zone 2121 eliminates the need to determine the location of the atomizing zone, making the installation of the atomizing structure 200 more convenient and faster.

[0056] refer to Figures 4 to 8 Specifically, the atomizing body 210 includes a first main body 211 and a second main body 212. Both the first main body 211 and the second main body 212 are connected to the limiting part 220. Along the first direction, the first main body 211 is located on one side of the limiting part 220, and the second main body 212 is located on the opposite side of the limiting part 220. The two are symmetrically arranged relative to the limiting part 220. The first main body 211 is provided with a first atomizing area 2111 at one end away from the limiting part 220, and the second main body 212 is provided with a second atomizing area 2121 at one side away from the limiting part 220. The positions of the first atomizing area 2111 and the second atomizing area 2121 are symmetrically arranged relative to the limiting part 220. By inserting either the first main body 211 or the second main body 212 into the guide tube cavity 110, the atomizing structure 200 and the guide tube 100 can be installed. The other part exposed outside the guide tube cavity 110 is placed in the first receiving cavity 320. It should be understood that when the first main body 211 is inserted into the guide tube cavity 110, the second main body 212 is located in the first receiving cavity 320, and the second atomizing zone 2121 is connected to the mist outlet 310. When the second main body 212 is inserted into the guide tube cavity 110, the first main body 211 is located in the first receiving cavity 320, and the first atomizing zone 2111 is connected to the mist outlet 310.

[0057] refer to Figures 4 to 8 In other embodiments, the atomizing structure 200 includes at least two limiting portions 220. Each limiting portion 220 is connected to the outer peripheral wall of the atomizing body 210 at intervals with a first direction as the axis of rotation. Two adjacent limiting portions 220 and the atomizing body 210 together define an avoidance groove 230. The guide tube 100 and the end cap 300 can be disassembled and maintained by abutting the limiting portions 220. At the same time, the avoidance groove 230 is used to ensure the continuity of the guide channel 240.

[0058] refer to Figures 4 to 8 In some embodiments, the atomizing zone includes an atomizing groove 2112 and a flow channel 2113. The flow channel 240 is connected to one end of the flow channel 2113, and the other end of the flow channel 2113 is connected to the atomizing groove 2112. The opening of the atomizing groove 2112 faces the mist outlet 310, and the atomizing groove 2112 is connected to the mist outlet 310. Along the first direction, the top of the atomizing groove 2112 abuts against the end cap 300 (i.e., the inner wall of the first receiving cavity 320) to further compress the liquid flow space, making the impact of the liquid in the atomizing cavity more intense and improving the atomization effect of the liquid.

[0059] It should be noted that during liquid atomization, if the cavity wall of the atomizing groove 2112 separates from the end cap 300 along the first direction, the actual flow space of the liquid is the sum of the volume of the atomizing groove 2112 and a portion of the volume of the first receiving cavity 320. When the cavity wall of the atomizing groove 2112 abuts against the inner cavity wall of the first receiving cavity 320, the actual flow space of the liquid is confined within the atomizing groove 2112, making the impact between liquids more intense, thereby improving the atomization effect.

[0060] refer to Figures 4 to 8 In other embodiments, when the atomizing body 210 is provided with a first atomizing area 2111 and a second atomizing area 2121, both the first atomizing area 2111 and the second atomizing area 2121 may include an atomizing groove 2112 and a flow channel 2113, so that no matter which direction the first atomizing area 2111 and the second atomizing area 2121 are installed towards the mist outlet 310, the flow space of the liquid can be further compressed and the atomization effect of the liquid can be improved.

[0061] refer to Figures 3 to 7 In some embodiments, the flow channel 2113 extends from one end of the flow channel 240 away from the flow tube cavity 110 to the atomizing tank 2112. The flow channel 2113 is used to guide the liquid from the flow channel 240 to the atomizing tank 2112 for atomization. The flow channel 2113 is transversely cut along a plane perpendicular to the extension direction of the flow channel 2113. The cross-sectional area of ​​the flow channel 2113 gradually decreases, so that the liquid flow speed gradually increases during the process of guiding the liquid from the flow channel 240 to the atomizing tank 2112, thereby increasing the impact force of the liquid in the atomizing tank 2112 and improving the atomization effect.

[0062] refer to Figures 3 to 7In some embodiments, the atomizing zone includes at least two drainage channels 2113, each drainage channel 2113 being spaced apart around the outer periphery of the atomizing tank 2112, and each drainage channel 2113 including a drainage wall 2114. Each drainage wall 2114 includes a water outlet end near the atomizing tank 2112, and each water outlet end is connected to the center of the atomizing tank 2112 to define multiple first lines. Each drainage wall 2114 and the connected first lines have an angle, and all angles are equal. At least two drainage walls 2114 are arranged in parallel. Thus, through the drainage of each drainage channel 2113, liquid can flow into the atomizing tank 2112 in multiple directions. Furthermore, the liquid guided into the atomizing tank 2112 via each drainage channel 2113 can form a rotating vortex about a first direction as its axis by impacting the cavity wall of the atomizing tank 2112, which helps to further pressurize the atomizing tank 2112 and improve the atomization effect of the nozzle assembly.

[0063] Specifically, the end of the guide wall 2114 near the atomizing tank 2112 is the water outlet, and the water outlet is connected to the center of the atomizing tank 2112 to form the first connecting line. Figure 7 The dotted line in the diagram represents the first connecting line. At least a portion of the guide wall 2114 near the water outlet is flat, thus creating an angle between the guide wall 2114 and the first connecting line. The atomizing zone includes at least two guide channels 2113, each with a guide wall 2114. Different guide walls 2114 have water outlets near the atomizing tank 2112, and these outlets are connected to the center of the atomizing tank 2112 to form different first connecting lines (different first connecting lines can be collinear). Different guide walls 2114 have angles with their corresponding connected first connecting lines, thus defining multiple angles, all of which are equal. Furthermore, the flat portions of at least two guide walls 2114 are arranged parallel to each other to define the direction of the liquid flowing into the atomizing tank 2112, allowing multiple liquid streams to flow clockwise or counterclockwise around the center of the atomizing tank 2112 to ensure the formation of vortices.

[0064] It should be noted that the angle between the first connecting line and the drainage wall 2114 can be adjusted according to requirements.

[0065] refer to Figures 4 to 10 In some embodiments, the atomizing body 210 includes a flow guide wall 250 and a limiting wall 260. The limiting wall 260 abuts against the cavity wall of the mounting cavity to limit the installation position of the atomizing body 210 in the mounting cavity. There is a gap between the flow guide wall 250 and the cavity wall of the mounting cavity to enclose the flow guide channel 240. The flow guide cavity 110 is connected to the atomization area through the flow guide channel 240, thereby realizing the flow from the flow guide cavity 110 to the atomization area, so as to take into account the positioning and installation between the atomizing body 210, the flow guide tube 100 and the end cap 300 and the atomization function of the nozzle assembly.

[0066] It should be noted that the limiting wall 260 only needs to be positioned by abutting against the guide tube 100 and / or end cap 300. It is not necessary to fix the atomizing body 210 through this abutment, so as to avoid excessive wear on the guide tube 100 and / or end cap 300 when disassembling and assembling the atomizing body 210.

[0067] refer to Figures 5 to 10 In some embodiments, the atomizing body 210 includes multiple guide walls 250 and multiple limiting walls 260. With the first direction as the axis, the guide walls 250 and limiting walls 260 are distributed around the atomizing structure 200 at intervals. Each guide wall 250 has a gap with the cavity wall of the mounting cavity to enclose multiple guide channels 240. Thus, liquid can be delivered to the atomizing area through multiple paths from the guide tube cavity 110, which is beneficial to improving the liquid delivery efficiency. Furthermore, the impact of the liquid in the atomizing area is more intense, further improving the atomization effect of the nozzle assembly.

[0068] For example, the guide wall 250 is a plane and the limiting wall 260 is a curved surface. The guide wall 250 and the limiting wall 260 are distributed around the atomizing body 210 in sequence with the first direction as the axis. There is a gap between the guide wall 250 and the cavity wall of the mounting cavity to define the guide channel 240. The curvature of the guide wall 250, the curvature of the inner wall of the guide tube 100 and the curvature of the inner wall of the end cap 300 can be equal to ensure the fit between the limiting wall 260 and the guide tube 100, and the fit between the limiting wall 260 and the cavity wall of the first receiving cavity 320, restricting the movement of the atomizing structure 200 relative to the guide tube 100 and / or the end cap 300 in directions other than the first direction.

[0069] It should be noted that the number of guide walls 250 and limiting walls 260 can be set to two, three, or four, etc., so that the liquid can be transported from the guide tube cavity 110 to the atomization zone through multiple paths, which is beneficial to improving the atomization efficiency of the liquid. In addition, the number of guide channels 240 can be adjusted according to actual needs.

[0070] refer to Figures 3 to 6 In some embodiments, the mist outlet 310 includes a first orifice 311 and a second orifice 312, which are connected. The first orifice 311 is located on the side of the end cap 300 close to the atomizing structure 200, and the second orifice 312 is located on the side of the end cap 300 away from the atomizing structure 200. The orifice diameter of the first orifice 311 gradually decreases towards the second orifice 312 to increase the flow rate and improve the impact force of the spray. The orifice diameter of the second orifice 312 gradually decreases towards the first orifice 311, which is beneficial for more uniformly dispersing the water mist and limiting the diffusion range of the water mist.

[0071] Alternatively, the mist outlet 310 includes a first orifice section 311, a second orifice section 312, and a third orifice section 313. One end of the third orifice section 313 is connected to the first orifice section 311, and the other end of the third orifice section 313 is connected to the second orifice section 312. The first orifice section 311 is located on the side of the third orifice section 313 closer to the atomizing structure 200, and the second orifice section 312 is located on the side of the third orifice section 313 away from the third orifice section 312. The orifice diameter of the first orifice section 311 gradually decreases towards the third orifice section 313 to increase the flow rate. The third orifice section 313 is used to receive liquid from the first orifice section 311, providing a transition zone to make the liquid flow more stable. Furthermore, the orifice diameter of the second orifice section 312 gradually decreases towards the third orifice section 313 to ensure that the water mist gradually diffuses to the surroundings, making the sprayed water mist more uniform.

[0072] refer to Figures 3 to 6 In other embodiments, the maximum aperture of the second orifice 312 is greater than the maximum aperture of the first orifice 311, which is beneficial to further expand the spraying range of the nozzle assembly and improve the uniformity of spraying.

[0073] refer to Figures 1 to 10 The spraying device according to the embodiments of this application includes a liquid storage component and a nozzle assembly as described in any of the above embodiments. The liquid storage component is provided with a liquid storage chamber for storing cleaning fluid. The nozzle assembly is connected to the liquid storage component. The liquid in the liquid storage chamber is atomized by the nozzle assembly and sprayed out. The nozzle assembly can more conveniently realize the disassembly and maintenance of the atomizing structure 200, effectively avoiding damage to the nozzle assembly caused by disassembly and assembly of the atomizing structure 200, and is beneficial to extending the service life of the spraying device.

[0074] It should be noted that the spray device can be an electronic product such as a nasal irrigator or sprayer, which uses electrical energy to drive a liquid pump or squeeze a liquid reservoir to make the liquid in the reservoir flow to the nozzle assembly.

[0075] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A nozzle assembly, characterized in that, include: The flow guide tube is provided with a flow guide tube cavity; An end cap is provided with a mist outlet. The end cap is detachably connected to the guide tube and together with the guide tube forms an installation cavity, which is connected to the mist outlet. An atomizing structure is located inside the mounting cavity. The atomizing structure has an atomizing area on its end face in a first direction. Along the first direction, a flow guiding channel is formed between the side wall of the atomizing structure and the cavity wall of the mounting cavity. The flow guiding cavity, the flow guiding channel, the atomizing area, and the mist outlet are sequentially connected.

2. The nozzle assembly according to claim 1, characterized in that, The end cap is provided with a first receiving cavity and a second receiving cavity. Along the first direction, the first receiving cavity and the second receiving cavity are arranged sequentially and connected. The first receiving cavity is connected to the mist outlet. One end of the guide tube is arranged in the second receiving cavity. One end of the guide tube and the cavity wall of the first receiving cavity enclose the mounting cavity. The atomizing structure includes a connected atomizing body and a limiting part. Along the first direction, the end face of the atomizing body is provided with the atomizing area. The atomizing area is located in the first receiving cavity. With the first direction as the axis, the limiting part is distributed around the outer peripheral wall of the atomizing body, and the atomizing body and the limiting part together define an avoidance groove. Along the first direction, the guide tube abuts against one side of the limiting part, and the cavity wall of the first receiving cavity abuts against the opposite side of the limiting part.

3. The nozzle assembly according to claim 2, characterized in that, A portion of the atomizing body is located within the flow guide cavity, and another portion of the atomizing body is located within the first receiving cavity. The atomizing body has two atomizing zones, and the positions of the two atomizing zones are symmetrically arranged relative to the limiting portion along the first direction.

4. The nozzle assembly according to claim 1, characterized in that, The atomizing zone includes an atomizing groove and a flow channel. The flow channel is connected to one end of the flow channel, and the other end of the flow channel is connected to the atomizing groove. The opening of the atomizing groove faces the mist outlet, and the top of the atomizing groove abuts against the end cap along the first direction.

5. The nozzle assembly according to claim 4, characterized in that, The flow channel extends from one end of the flow channel away from the flow tube cavity to the atomizing groove, and crosses the flow channel along a plane perpendicular to the extension direction of the flow channel, with the cross-sectional area of ​​the flow channel gradually decreasing.

6. The nozzle assembly according to claim 4 or 5, characterized in that, The atomizing zone includes at least two flow channels, each flow channel being spaced apart around the outer periphery of the atomizing channel. Each flow channel includes a flow wall, each flow wall including a water outlet end near the atomizing channel. Each water outlet end is connected to the center of the atomizing channel, defining multiple first lines. Each flow wall and the connected first lines have an angle, and all angles are equal. Furthermore, at least two flow walls are arranged parallel to each other.

7. The nozzle assembly according to claim 1, characterized in that, The atomizing structure includes a flow guide wall and a limiting wall. The limiting wall abuts against the cavity wall of the mounting cavity, and there is a gap between the flow guide wall and the cavity wall of the mounting cavity to enclose the flow guide channel.

8. The nozzle assembly according to claim 7, characterized in that, The atomizing structure includes multiple guide walls and multiple limiting walls. With the first direction as the axis, the guide walls and limiting walls are distributed around the atomizing structure at intervals. Each guide wall has a gap with the cavity wall of the mounting cavity to enclose multiple guide channels.

9. The nozzle assembly according to claim 1, characterized in that, The mist outlet includes a first section and a second section, the first section and the second section are connected, the first section is located on the side of the end cap close to the atomizing structure, the second section is located on the side of the end cap away from the atomizing structure, the diameter of the first section gradually decreases towards the second section, and the diameter of the second section gradually decreases towards the first section. Alternatively, the mist outlet includes a first segment, a second segment, and a third segment, with one end of the third segment connected to the first segment and the other end connected to the second segment. The first segment is located on the side of the third segment closer to the atomizing structure, and the second segment is located on the side of the third segment away from the second segment. The diameter of the first segment gradually decreases towards the third segment, and the diameter of the second segment gradually decreases towards the third segment.

10. A spraying device, characterized in that, include: Liquid storage component, equipped with a liquid storage chamber; The nozzle assembly according to any one of claims 1 to 9 is connected to the liquid storage component, and the flow guide cavity is in communication with the liquid storage cavity.

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