Seal assembly for a fluid dispensing device, spray assembly and fluid dispensing device

Abstract

The present disclosure relates to a sealing assembly, a spray assembly and a fluid dispensing apparatus. The fluid dispensing apparatus has a reservoir component for fluid communication with a fluid dispensing assembly, wherein the sealing assembly comprises: a third seal disposed between the fluid dispensing assembly and a nozzle of the fluid dispensing apparatus to provide a fluid seal between the fluid dispensing assembly and the fluid dispensing apparatus in the event of fluid flow from the fluid dispensing apparatus into the fluid dispensing assembly; and a housing fixedly connected with the fluid dispensing apparatus and having a first spray opening.

Description

Technical Field

[0001] This disclosure relates to the field of spray technology, and more particularly to a sealing assembly, a spray assembly, and a fluid distribution device for use in a fluid distribution apparatus. Background Technology

[0002] With increasing public awareness of health, the demand for precision medicine is becoming more urgent. Among these advancements, oral or nasal administration via fluid dispensing devices has proven to be a direct and effective treatment. Liquids (such as medications) can be atomized into droplets using the spray assembly of a fluid dispensing device. However, the spray volume of fluid dispensing devices in related technologies is often inconsistent and the sealing effect is generally poor. Therefore, there is a need for fluid dispensing devices with improved sealing performance.

[0003] The methods described in this section are not necessarily methods that had been previously conceived or adopted. Unless otherwise specified, no method described in this section should be assumed to be prior art simply because it is included in this section. Similarly, unless otherwise specified, the issues mentioned in this section should not be considered to be accepted in any prior art. Utility Model Content

[0004] This disclosure provides a sealing assembly, a spraying assembly, and a fluid dispensing device for use in a fluid dispensing apparatus. The fluid dispensing assembly may be a fluid dispensing assembly equipped with a microfluidic chip. The microfluidic chip may contain structures such as channels and chambers with micrometer-scale dimensions (typically between tens and hundreds of micrometers in width and depth), which can handle extremely small amounts of liquid.

[0005] According to a first aspect of this disclosure, a sealing assembly for a fluid dispensing device is provided. The fluid dispensing device has a reservoir for fluid communication with the fluid dispensing assembly, and the sealing assembly includes: a third seal disposed between the fluid dispensing assembly and a nozzle of the fluid dispensing device to provide a fluid seal between the fluid dispensing assembly and the fluid dispensing device in the event of fluid flow from the fluid dispensing device into the fluid dispensing assembly; and a housing fixedly connected to the fluid dispensing device and having a first spray nozzle.

[0006] According to a second aspect of this disclosure, a spray assembly is provided, including a sealing assembly according to a first aspect of this disclosure, the sealing assembly being configured to provide a fluid seal between the spray assembly and the fluid distribution device when fluid flow from the fluid distribution device enters the second fluid channel.

[0007] According to a third aspect of this disclosure, a fluid dispensing device is provided, comprising: a sealing assembly according to a first aspect of this disclosure; and a pumping assembly for pumping fluid stored in a reservoir of the fluid dispensing device to the sealing assembly, such that the fluid is ejected outward from a first spray nozzle.

[0008] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it according to the contents of the specification, and to make the above and other objects, features and advantages of this application more apparent, specific embodiments of this application are described below. Attached Figure Description Further details, features, and advantages of this disclosure are disclosed in the following description of exemplary embodiments in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram illustrating a chip assembly according to an exemplary embodiment of the present disclosure, wherein the flow direction of fluid in the chip assembly is illustrated exemplarily; Figure 2 This is a perspective schematic diagram of a first chip of a chip assembly according to an exemplary embodiment of the present disclosure; Figure 3 This is a top view illustrating a first chip of a chip assembly according to an exemplary embodiment of the present disclosure; Figure 4 This is a perspective schematic diagram of a second chip of a chip assembly according to an exemplary embodiment of the present disclosure; Figure 5 This is a cross-sectional view illustrating a fluid dispensing device according to an exemplary embodiment of the present disclosure; Figure 6 It is shown in the figure. Figure 5 A partial cross-sectional view of a spray assembly according to an exemplary embodiment of the present disclosure; Figure 7 It is shown in the figure. Figure 6 A perspective view of a support member according to an exemplary embodiment of the present disclosure; Figure 8 It is shown in the figure. Figure 6 A cross-sectional view of a support member according to an exemplary embodiment of the present disclosure.

[0009] List of reference numerals in the attached diagram: Chip component 10; First chip 101, first main surface 1011, circumferential side surface 1012; Main surface groove 1013, first bottom wall 131, first side wall 132, first opening 133, second opening 134; Side surface groove 1014, second bottom wall 141, second side wall 142, chamfer 143; Second chip 102, through hole 1021; The cavity 103 is a collection chamber, the bottom wall of the cavity 1031 is a cavity bottom wall, and the side wall of the cavity 1032 is a cavity side wall; First fluid channel 104; Spray assembly 20; fluid distribution assembly 210; Housing 201, first spray nozzle 2011; Chip base 202, first receiving cavity 2021, second spray nozzle 2022; first contact surface 2023; First sealing element 203; Support member 204, second receiving cavity 2041, recess 241, second fluid channel 2042; second abutment surface 2043; sealing groove 2044; Filter element 205; Cavity 206; Second seal 207; Third seal 208; Fluid distribution device 30; liquid storage component 301; pumping assembly 302; nozzle assembly 303. Detailed Implementation

[0010] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0011] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this disclosure are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0012] In this disclosure, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0013] In this disclosure, unless otherwise stated, all figures used in this specification and claims to represent component parameters, technical effects, etc., should in any instance be understood to be modified by the terms "approximately" or "roughly". Therefore, unless indicated to the contrary, the numerical parameters listed in the following specification and appended claims are approximate values. They will vary for those skilled in the art depending on the desired properties and effects sought to be obtained through this disclosure, and each numerical parameter should be interpreted according to the number of significant figures and conventional rounding methods or in a manner understood by those skilled in the art.

[0014] In this disclosure, the terminology used in the description of the various examples is for the purpose of describing particular examples only and is not intended to be limiting. Unless the context explicitly indicates otherwise, an element may be one or more unless the number of elements is specifically limited. Furthermore, the term "and / or" as used in this disclosure covers any one of the listed items and all possible combinations thereof.

[0015] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solutions of this disclosure and are therefore intended to limit the scope of protection of this disclosure.

[0016] In this disclosure, Figure 1 This is a schematic diagram illustrating a chip assembly according to an exemplary embodiment of the present disclosure, wherein the flow direction of fluid in the chip assembly is illustrated by way of example. Figure 2 This is a perspective schematic diagram of a first chip of a chip assembly according to an exemplary embodiment of the present disclosure; Figure 3 This is a top view illustrating a first chip of a chip assembly according to an exemplary embodiment of the present disclosure; Figure 4 This is a perspective schematic diagram of a second chip of a chip assembly according to an exemplary embodiment of the present disclosure; Figure 5 This is a cross-sectional view illustrating a fluid dispensing device according to an exemplary embodiment of the present disclosure; Figure 6 It is shown in the figure. Figure 5 A partial cross-sectional view of a spray assembly according to an exemplary embodiment of the present disclosure.

[0017] With the development of medical technology, drug delivery via the mouth or nose through fluid dispensing devices has proven to be a direct and effective treatment. Liquids (such as medications) can be atomized into droplets using the spray assembly of a fluid dispensing device. However, the spray volume of fluid dispensing devices in related technologies is often unstable and the sealing effect is generally poor. Therefore, there is a current need for a fluid dispensing device with improved sealing performance.

[0018] In view of this, a sealing assembly for a fluid dispensing device is provided in this disclosure. The fluid dispensing device 30 has a reservoir 301 for fluid communication with the fluid dispensing assembly. The sealing assembly includes a third seal 208 disposed between the fluid dispensing assembly and a nozzle of the fluid dispensing device 30 to provide a fluid seal between the fluid dispensing assembly and the fluid dispensing device 30 when fluid flow from the fluid dispensing device 30 enters the fluid dispensing assembly. In some embodiments, the sealing assembly further includes a housing 201. The housing 201 is fixedly connected to the fluid dispensing device 30 and has a first spray nozzle 2011.

[0019] The third seal 208 facilitates the smooth flow of fluid from the fluid distribution device into the fluid distribution assembly (e.g., the second fluid channel 2042 of the support 204, which will be described below), preventing fluid dispersion or leakage to other areas of the spray assembly 20. It is understood that the seals described in this disclosure (including the first seal 203, and the second seal 207 and the third seal 208, which will be described in detail below) may be in the form of sealing rings and may be made using the same materials to save on manufacturing costs.

[0020] It is understood that the housing 201 can be fixedly connected to the fluid distribution device. For example, in Figure 5 In the example shown, housing 201 can be used to fit over the nozzle component 303 of the fluid dispensing device 30. Housing 201 can have a shape similar to the end nozzle of the nozzle component 303 of the fluid dispensing device 30, for example, as shown in the example. Figure 5 The opening shown is cylindrical. The housing 201 can be securely connected to the nozzle component 303 of the fluid distribution device by any suitable mechanical connection, such as a snap-fit ​​connection or an interference fit connection. Figure 6 As shown, the housing 201 has a first spray nozzle 2011 such that the fluid forming a vortex is sprayed outward from the first spray nozzle 2011 after passing through the chip assembly 10 (which will be described in detail below).

[0021] In some embodiments, the fluid distribution assembly 201 described above includes a chip assembly 10 having a fluid inlet and a fluid outlet, and a support member 204 disposed inside the housing 201. In the above embodiments, fluid from the reservoir 301 flows into the chip assembly 10 through the fluid inlet via the second fluid channel 2042, and is ejected outward from the fluid outlet of the chip assembly 10 (e.g., through a through-hole 1021 on the second chip 102, which will be described in detail below).

[0022] In addition, the support 204 also includes a second fluid channel 2042, which is in fluid communication with the liquid storage component 301 of the fluid dispensing device 30 to deliver fluid from the fluid dispensing device 30 to the chip assembly 10 in the chip base 202 (the chip assembly 10 will be described in detail below).

[0023] In some implementations, such as Figure 6 As shown, the support member 204 defines a second receiving cavity 2041 for receiving the chip base 202.

[0024] In some examples, the second fluid channel 2042 may be fluidly connected to a fluid channel inside the nozzle component 303 of the fluid distribution device 30. In some examples, the diameter of the second fluid channel 2042 may be slightly smaller than that of the fluid channel inside the fluid distribution device 30 to appropriately increase the hydraulic pressure of fluid entering the spray assembly 20 and avoid fluid velocity loss.

[0025] Continue to refer to Figure 6 In some embodiments, a filter element 205 is provided at one end of the second fluid channel 2042 away from the fluid distribution device 30, and the second receiving cavity 2041 includes a recess recessed into the second fluid channel 2042, and the recess receives at least a portion of the filter element 205. Furthermore, the sealing assembly includes a second seal 207 positioned between the chip base 202 and the support member 204, and the second seal 207 is interference-fitted with the filter element 205.

[0026] In the above embodiments, a portion of the filter element 205 can be accommodated in the recess, which helps maintain the positional stability of the filter element 205 and improves its filtration efficiency. In some examples, the filter element 205 can be interference-fitted with the recess. Furthermore, the second seal 207, disposed between the chip base 202 and the support member 204, further reduces and prevents fluid leakage from the filter element 205 into other areas of the second receiving cavity 2041, thus improving the sealing performance of the spray assembly. The filter element 205 and the second seal 207 precisely guide the fluid from the fluid distribution device, allowing the fluid to pass more accurately through the filter element 205 for impurity filtration, thereby achieving a good spray effect from the fluid distribution device.

[0027] In some embodiments, the chip base 202 has a first receiving cavity 2021 defined inside for receiving a chip assembly 10, wherein the chip assembly includes a first chip and a second chip attached to the first chip, the first chip and the second chip being configured to allow fluid from the fluid dispensing device to converge into a vortex after passing through the first chip and be ejected outward from the second chip.

[0028] A first seal 203 is disposed between the second chip 102 and the top of the first receiving cavity 2021. The first seal 203 may have a shape adapted to the second chip 102. In some examples, such as... Figure 6 As shown, the first seal 203 has a through hole so that fluid can be ejected from the second chip 102.

[0029] By providing the first seal 203, it helps to ensure that fluid is ejected through the predetermined second spray port 2022 and the first spray port 2011, thus preventing leakage in other areas of the spray assembly 20.

[0030] In some implementations, reference Figure 8 The inner wall of the support member 204 may be formed with a second abutment surface 2043, which is used to limit the second seal member 207.

[0031] In some examples, such as Figure 6 and Figure 8 As shown, the inner wall of the support member 204 can also be chamfered to facilitate the installation of the chip assembly 10.

[0032] In some embodiments, the recess 241 may be recessed from the second abutment surface 2043 toward the second fluid channel 2042.

[0033] In some implementations, reference Figure 8 The support member 204 may further include a sealing groove 2044, which is disposed around the second fluid channel 2042 for receiving a third seal 208. The third seal 208 is used to provide the fluid distribution assembly 210 with other components (e.g., ...) when fluid flows into the fluid distribution assembly 210. Figure 6 A fluid seal is formed between the components below the support member 204. The third seal 208 facilitates smooth fluid entry into the second fluid channel 2042 of the support member 204, preventing fluid dispersion or leakage to other areas of the spray assembly 20. In the example, the sealing groove 2044 may be an annular groove surrounding the second fluid channel 2042 and disposed circumferentially outward of the second fluid channel 2042 to accommodate the annular third seal 208.

[0034] Next reference Figures 1 to 4 Detailed description of the chip component 10 according to this disclosure.

[0035] Within the scope of this disclosure, the "chip assembly" can be installed in the nozzle assembly or spray assembly of a fluid dispensing device and can be linked with a pumping assembly of the fluid dispensing device, such as one including an actuating component like a push switch, for delivering the atomized liquid to be sprayed into the corresponding chamber.

[0036] A chip assembly for a fluid dispensing device provided according to an exemplary embodiment of the present disclosure may include: a first chip having a first main surface and circumferential side surfaces, and the first chip defining: at least two main surface recesses recessed from the first main surface; at least two side surface recesses recessed from the circumferential side surfaces, wherein each of the at least two side surface recesses is in fluid communication with one of the main surface recesses, thereby forming at least two first fluid channels; and a collection cavity in fluid communication with the at least two first fluid channels to allow fluid flowing into the collection cavity via the at least two first fluid channels to converge into a vortex; and a second chip attached to the first chip and defining at least one through-hole extending through the thickness of the second chip, wherein the at least one through-hole is in fluid communication with the collection cavity to allow fluid forming the vortex to be ejected outward through the at least one through-hole.

[0037] The chip assembly according to this disclosure forms multiple (e.g., at least two) fluid channels with different directions and positions by providing at least two main surface grooves and at least two side surface grooves on the first main surface and circumferential side surface of the first chip. This allows fluids to flow with different velocities and / or directions when flowing into the collecting cavity. Fluids (e.g., medication) from at least two fluid channels can collide and converge within the collecting cavity, thereby forming eddies or turbulence. The formation of eddies effectively increases the energy exchange of the fluid, allowing the fluid to mix thoroughly within the collecting cavity. Furthermore, the rotation and turbulence within the collecting cavity increase the injection pressure and improve the injection efficiency. When the fluid in the collecting cavity is ejected outward through at least one through-hole on the second chip, the injected medication can form a finer and more uniform atomized aerosol, improving the spray effect of the fluid distribution device and making the spray gentler and more continuous. This facilitates full inhalation by the patient and avoids discomfort or irritation.

[0038] like Figure 1 As shown, the chip assembly 10 provided in this disclosure includes a first chip 101 and a second chip 102, with the second chip 102 disposed above and attached to the first chip 101. A main surface groove 1013 on the first main surface 1011 of the first chip 101 and a side surface groove 1014 on the circumferential side surface 1012 form corresponding first fluid channels 104, for example, at least two first fluid channels 104. Fluid from a fluid distribution device flows through the first fluid channels 104 formed by the main surface groove 1013 and the side surface groove 1014, collects in a collecting cavity 103, and forms a vortex, causing the fluid to be fully mixed before being ejected from at least one through-hole 1021 of the second chip 102.

[0039] It is understandable that the main surface groove 1013 of the first main surface 1011 and the circumferential side surface 1012 can have a one-to-one correspondence. For example, a main surface groove 1013 and a side surface groove 1014 can be fluidly connected to form a first fluid channel 104. Figure 1 In the example shown, fluid from the fluid distribution device is... Figure 1 The flow direction shown is as follows: the fluid flows from the side surface groove 1014 into the corresponding main surface groove 1013 along the first fluid channel 104 and is ejected from the through hole 1021 of the second chip 102 after converging into a vortex. Due to the vortex formed in the converging cavity 103, the fluid has higher momentum and stronger penetrating power when ejected through the through hole 1021 of the second chip 102.

[0040] In some embodiments, the diameter of the via 1021 of the second chip 102 ranges from 0.01 mm to 0.2 mm. For example, in some examples, the diameter of the via 1021 of the second chip 102 is 0.175 mm.

[0041] In some embodiments, the size of the first fluid channel 104 ranges from 0.01 mm to 0.2 mm. Furthermore, and in some examples, the gap at the narrowest point of the first fluid channel 104 may also range from 0.01 mm to 0.2 mm. For example, in... Figure 2 and Figure 3 In the example shown, the width of the first fluid channel 104 on the circumferential side surface 1012 of the first chip 10 can be 0.14 mm.

[0042] In some embodiments, at least two side surface grooves 1014 penetrate the first chip 101 in the thickness direction. In this embodiment, fluid can flow smoothly from bottom to top.

[0043] In some implementations, such as Figures 1 to 3 As shown, the collecting cavity 103 has a circular shape, and each of the at least two main surface grooves 1013 extends on the first main surface 1011 at a first angle greater than 0° and less than 90° with the radial direction of the collecting cavity 103.

[0044] In some examples, "the collecting cavity 103 has a circular shape" can refer to the collecting cavity 103 having a generally circular outline shape, and / or the collecting cavity 103 having a circular shape, such as... Figure 2 The cavity sidewall 1032 shown (the cavity sidewall 1032 of the collecting cavity 103 will be described in more detail below) is equidistant or approximately equidistant from the geometric center of the collecting cavity 103.

[0045] In the above embodiment, by offsetting the extension direction of each main surface groove 1013 from the radial direction of the collecting cavity 103, the chip assembly 10 according to this disclosure defines the fluid flow direction of the portion of the fluid from the fluid dispensing device on the first main surface 1011 of the first fluid channel 104. With a first angle greater than 0° and less than 90° to the radial direction of the collecting cavity 103, the fluid flows obliquely into the collecting cavity 103. This non-radial symmetric fluid guiding design helps to break the symmetry of the fluid, allowing the fluid to mix thoroughly within the collecting cavity and generating a stronger rotational effect, thereby increasing the intensity of the vortex generated in the collecting cavity 103. The strong vortex allows for thorough mixing of the fluid (e.g., medication) from the fluid dispensing device, contributing to the spraying of a uniform, fine atomized spray and enhancing the efficiency of drug inhalation.

[0046] In this disclosure, the direction in which fluid from the fluid distribution device flows into the collecting cavity 103 is not limited to an oblique flow greater than 0° and less than 90°. Under other suitable conditions, the fluid may also have a radial or tangential flow relative to the collecting cavity 103.

[0047] In some embodiments, the main surface groove 1013 and the side surface groove 1014 have a smaller surface roughness than the first main surface 1011 and / or the circumferential side surface 1012. Due to the smaller surface roughness of the main surface groove 1013 and the side surface groove 1014, the fluid maintains lower flow resistance when flowing through the first fluid channel 104. The fluid can pass through the grooves smoothly and quickly, reducing flow velocity loss within the first fluid channel 104, which helps ensure the eddy strength and stability within the collecting cavity 103, resulting in a more uniform and fine spray particle size and enhanced spray effect. Furthermore, the lower surface roughness reduces fluid adhesion to the inner surfaces of the main surface groove 1013 and / or the side surface groove 1014, preventing drug retention due to surface tension.

[0048] like Figure 1 and Figure 2 As shown, in some embodiments, the main surface groove 1013 includes a first bottom wall 131 and two first side walls 132 connected to the first bottom wall 131. The two first side walls 131, together with the first bottom wall 131, sequentially define a first fluid channel 104 in a direction extending from the main surface groove 1013 towards the collecting cavity 103, forming a first fluid channel 104 through a first opening 133 and a second opening 134 on the first main surface 1011. The main surface groove 1013 is in fluid communication with the side surface groove 1014 through the first opening 133 and with the collecting cavity 103 through the second opening 134, thereby forming the first fluid channel 104. In such embodiments... Figure 2 and Figure 3 In the example shown, since the second opening 134 is in communication with the collecting cavity 103, the outline shape of the second opening 134 can correspond to the outline of the collecting cavity 103. For example, in the collecting cavity 103 (from such... Figure 3 In the case of a roughly circular outline (as shown from the bottom view), the second opening 134 can have an outline shape similar to an arc on that circle.

[0049] In some embodiments, the distance between the two first sidewalls 132 decreases as the first fluid channel 104 extends closer to the collecting cavity 103. For example... Figure 3 As shown, the width of the first fluid channel 104 on the first main surface gradually narrows.

[0050] In the above embodiment, when the fluid passes through the first fluid channel 104, which gradually narrows in width, the flow velocity increases due to the reduced channel area, thereby enhancing the fluid's liquid pressure and kinetic energy. This design helps to concentrate the fluid's kinetic potential energy before entering the collecting cavity, promoting the formation of a stronger vortex within the collecting cavity. Under the action of the vortex, the fluid can be ejected as a tiny and uniform atomized spray, improving atomization efficiency.

[0051] In some examples, the degree to which the width of the first fluid channel 104 narrows on the first main surface 1011 can be precisely controlled to ensure that fluid can enter the collecting cavity 103 with appropriate water pressure and flow rate.

[0052] In some implementations, such as Figure 2 The shown collection cavity 103 includes a cavity bottom wall 1031 and a cavity side wall 1032 connected to the cavity bottom wall 1032.

[0053] And as Figure 1 and Figure 3 As shown, the surface curvature of one of the two first sidewalls 132 is equal to the surface curvature of the cavity sidewall 1032 at the junction of the first sidewall 132 and the corresponding cavity sidewall 1032. That is, one of the two first sidewalls 132 of the first fluid channel 104 is smoothly connected to the cavity sidewall 1032 of the collecting cavity 103. In some embodiments, the smooth connection between one of the two first sidewalls 132 of the first fluid channel 104 and the sidewall of the collecting cavity 103 can be selected based on the flow direction (clockwise or counterclockwise) of the fluid in the at least two first fluid channels 104 relative to the geometric center of the collecting cavity 103.

[0054] The smooth transition design in the above embodiments can avoid the loss of flow rate and / or energy of the fluid due to the sudden change in curvature at the connection between the first fluid channel 104 and the collecting cavity 103, which helps to maintain the stability of the fluid and facilitates the formation of a stable and powerful vortex after the fluid enters the collecting cavity 103, so that the fluid can form a fine and uniform spray effect when it is ejected through the through hole 1021 of the second chip 102.

[0055] In some embodiments, the side surface groove 1014 includes a second bottom wall 141 and two second side walls 142 connected to the second bottom wall 141. And... Figure 2 and Figure 3 In the example shown, there is a rounded chamfer between the second bottom wall 141 and the corresponding second side wall 142. It will be understood that in some embodiments, the distance between the second side walls 142 is equal to the width of the first opening 133.

[0056] The rounded chamfer design reduces friction between the fluid and the wall as it flows through the side surface groove 1014 from the fluid distribution device. This prevents excessive turbulence caused by sharp corners and other factors, thus reducing fluid velocity loss. Furthermore, the rounded chamfer design not only enhances the chip's durability but also reduces the probability of failure in the chip assembly 10 during long-term use.

[0057] It is understood that at least two side surface grooves 1014 are each in fluid communication with a main surface groove 1013, thereby forming at least two first fluid channels 104, which may be three, four or more, and this disclosure does not limit them.

[0058] For example, in such Figures 1 to 3 In the example shown, at least two first fluid channels 104 include three first fluid channels 104, and the three first fluid channels 104 extend into the collecting cavity 103 from the first main surface 1011 by three side surface grooves 1012, respectively, and the extending directions of the three first fluid channels 104 are arranged at 120° relative to each other. That is, the three first fluid channels extend into the collecting cavity 103 at an extending direction of 120° relative to each other, so that the fluid from the fluid distribution device forms a vortex after flowing into the collecting cavity 103.

[0059] Continue to refer to Figure 1 and Figure 4The via 1021 on the second chip 102 can be implemented in two ways: single via and multiple via. In some embodiments, the second chip 102 includes a first via 1021 that passes through the thickness of the second chip 102, wherein the first via 1021 is located on the same straight line as the geometric center point of the collecting cavity 103.

[0060] In some embodiments, the second chip 102 includes a plurality of second through-holes 1021 extending through the thickness of the second chip 102. And as... Figure 4 As shown, in an embodiment where the second chip 102 has multiple vias, the multiple second vias 1021 are arranged in an array, and the array of the multiple second vias 1021 has a shape consistent with the collection cavity 103, wherein the geometric center point of the array of the multiple second vias 1021 and the geometric center point of the collection cavity 103 are located on the same straight line.

[0061] In some embodiments, a cavity 206 surrounding the chip assembly 10 is defined between the cavity wall of the first receiving cavity 2021 of the chip substrate 202 and the chip assembly 10. Figure 6 In the example shown, after the fluid from the fluid distribution device enters the filter 205 for filtration via the second fluid channel 2042, the fluid will first enter the cavity 206 and then flow into the chip assembly via the side surface groove 1014 of the second chip 102.

[0062] It is understood that the cavity 206 at least surrounds the second chip 102 of the chip assembly 10 so that fluid within the cavity 206 can flow into the chip assembly 10 via the side surface groove 1014 of the second chip 102. In some examples, the cavity wall of the first receiving cavity 2021 may have a suitable gap between it and the chip assembly 10 to form the cavity 206, so that the fluid can maintain a suitable flow rate and pressure after passing through the filter 205.

[0063] In the above embodiment, the fluid is first pre-purified by the filter element 205, and then the fluid enters the cavity 206 surrounding the second chip 102. The cavity surrounding the second chip provides a buffer space for fluid flow. Through the function of the cavity 206, the speed and distribution of the fluid can be effectively adjusted, so that it flows into the chip assembly more evenly and smoothly, ensuring the uniformity of the atomization process and making the spray effect more stable.

[0064] In some embodiments, the chip substrate 202 is provided with a second spray nozzle 2022 at the top of the first receiving cavity 2021, so that fluid for forming a vortex is sprayed from the second spray nozzle 2022 after passing through at least one through hole. For example... Figure 6As shown, the second spray nozzle 2022 can be positioned below the first spray nozzle 2011, and the size of the first spray nozzle 2011 is larger than the size of the second spray nozzle 2022, so that fluid can be sprayed out sequentially from the second spray nozzle 2022 and the first spray nozzle 2011, avoiding fluid residue. The second spray nozzle 2022 and the first spray nozzle 2011 can have a trapezoidal cross-section to facilitate fluid spraying.

[0065] In some embodiments, a filter element 205 is disposed at one end of the second fluid channel 2042 near the chip substrate 202, and the first chip 101 inside the first receiving cavity 2021 of the chip substrate 202 is interference-fitted with the filter element 205. In some examples, the filter element 205 may have a porous structure. In some examples, the filter element 205 may, for example, comprise a porous soft material.

[0066] In the above embodiment, by using a filter element 205 that is interference-fitted to the first chip 101, impurities, particulate matter, and contaminants that may be present in the fluid can be effectively removed before the fluid enters the chip assembly 10, avoiding damage to the multiple fluid channels 104 that protect the chip assembly 10, and helping to ensure that the fluid maintains a high level of purity after being sprayed from the chip assembly 10. For aerosol devices used in medical applications, the filter element can prevent fine particles or possible contaminants from being absorbed by the patient after being sprayed through the chip assembly, thereby reducing potential health risks. By using an interference fit between the first chip 101 and the filter element 205, the stability of the filter element is ensured, preventing it from loosening or shifting during use due to fluid pressure or vibration.

[0067] refer to Figure 6 According to an exemplary embodiment of the present disclosure, a spray assembly 20 is also provided. The spray assembly 20 includes a sealing assembly according to a first aspect of the present disclosure, the sealing assembly being configured to provide a fluid seal between the spray assembly 20 and the fluid dispensing device 30 when fluid flow from the fluid dispensing device 30 enters the fluid dispensing assembly (in some examples, the fluid flows into the chip assembly of the fluid dispensing assembly through a second fluid channel 2042).

[0068] In some embodiments, the spray assembly 20 further includes a chip base 202, the interior of which defines a first receiving cavity 2021 for receiving the chip assembly 10. The chip assembly includes a first chip 101 and a second chip 102 attached to the first chip 101. The first chip 101 and the second chip 102 are configured to allow fluid from the fluid dispensing device 30 to converge into a vortex after passing through the first chip 101 and be sprayed outward from the second chip 102.

[0069] The spray assembly 20 has similar features to the chip assembly 10 and the sealing assembly described above, and has the advantages of improving the spraying and sealing effects of the fluid distribution device, which will not be elaborated here.

[0070] Return to reference Figure 5 According to exemplary embodiments of the present disclosure, a fluid dispensing device 30 is also provided.

[0071] The fluid dispensing device 30 includes a liquid storage component 301 and a pumping assembly 302. A nozzle component 303 of the fluid dispensing device 30 is provided at the spray assembly 20 according to this disclosure. The pumping assembly 302 pumps the fluid stored in the liquid storage component 301 of the fluid dispensing device 30 to the spray assembly 20 (and, for example, the chip assembly 10 sealed by a sealing assembly), so that the fluid is sprayed outward from the first spray nozzle 2011.

[0072] The fluid dispensing device 30 according to this disclosure may be, for example, a nasal spray device for nasal medication delivery, and the fluid dispensing device 30 has the features and advantages of the chip assembly 10 and the spray assembly 20 according to this disclosure, which will not be repeated here.

[0073] The particle size of the fluid sprayed by the fluid distribution device 30 according to the embodiments of the present disclosure can be measured using a particle size analyzer (or particle size tester) to verify the effectiveness of the fluid distribution device 30.

[0074] For example, a laser particle size analyzer for inhalers or for aerosols / nasal sprays, manufactured by Sympatec GmbH in Germany, can be used to measure the particle size of the fluid sprayed by the fluid dispensing device. Tables 1 and 2 below show the fluid particle size measurement results at test flow rates of 28.3 L / min and 60 L / min, respectively. The test fluid in the fluid dispensing device is water, and all parameters except the test flow rate are instrument default values.

[0075] Table 1: Fluid particle size measurement results at a test flow rate of 28.3 L / min

[0076] Table 1 shows the results of eight fluid particle size measurements performed at a flow rate of 28.3 L / min. Here, "x10" indicates that 10% of the particles sprayed by the fluid distribution device have a diameter smaller than or equal to this value; "x50" indicates that 50% of the particles sprayed by the fluid distribution device have a diameter smaller than or equal to this value; and "x90" indicates that 90% of the particles sprayed by the fluid distribution device have a diameter smaller than or equal to this value. The span value is calculated using the formula: Span value = (x90 - x10) / x50. A smaller span value indicates a more concentrated particle size distribution, i.e., more uniform particle size; a larger span value indicates a more dispersed particle size distribution, i.e., less uniform particle size. Taking the average value of the first to eighth measurements as an example, among all the particles sprayed by the fluid distribution device, the proportion of particles with a diameter less than or equal to 11.48 µm is 10%, the proportion of particles with a diameter less than or equal to 31.80 µm is 50%, and the proportion of particles with a diameter less than or equal to 45.92 µm is 90%, and the span value = (45.92 - 11.48) / 31.80 = 1.08.

[0077] Table 2: Fluid particle size measurement results at a test flow rate of 60 L / min

[0078] Table 2 shows the results of eight fluid particle size measurements performed at a flow rate of 60 L / min. Here, "x10" indicates that 10% of the particles sprayed by the fluid distribution device have a diameter smaller than or equal to this value; "x50" indicates that 50% of the particles sprayed by the fluid distribution device have a diameter smaller than or equal to this value; and "x90" indicates that 90% of the particles sprayed by the fluid distribution device have a diameter smaller than or equal to this value. The span value is calculated using the formula: Span value = (x90 - x10) / x50. A smaller span value indicates a more concentrated particle size distribution, i.e., more uniform particle size; a larger span value indicates a more dispersed particle size distribution, i.e., less uniform particle size. Taking the average value of the first to eighth measurements as an example, among all the particles sprayed by the fluid distribution device, the proportion of particles with a diameter less than or equal to 12.29 µm is 10%, the proportion of particles with a diameter less than or equal to 29.19 µm is 50%, and the proportion of particles with a diameter less than or equal to 43.99 µm is 90%, and the span value = (43.99 - 12.29) / 29.19 = 1.08.

[0079] It should be understood that in this specification, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship or dimensions based on the orientation or positional relationship or dimensions shown in the accompanying drawings. These terms are used only for ease of description and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application.

[0080] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0081] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "installation," etc., should be interpreted broadly. For example, they can refer to an installation connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0082] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0083] Although this disclosure has been described and illustrated in detail in the accompanying drawings and the foregoing description, such description and illustration should be considered illustrative and suggestive, not restrictive; this disclosure is not limited to the disclosed embodiments. By studying the drawings, the disclosure, and the appended claims, those skilled in the art will be able to understand and implement variations of the disclosed embodiments in practice with respect to the claimed subject matter. In the claims, the word "comprising" does not exclude other elements or steps not listed, the indefinite article "a" or "an" does not exclude a plurality, the term "a plurality" means two or more, and the term "based on" should be interpreted as "at least partially based on". The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be beneficial.

Claims

1. A sealing assembly for a fluid distribution device, characterized in that, The fluid dispensing device has a liquid reservoir for fluid communication with the fluid dispensing assembly, wherein the sealing assembly includes: A third seal, disposed between the fluid dispensing assembly and the nozzle of the fluid dispensing device, provides a fluid seal between the fluid dispensing assembly and the fluid dispensing device when fluid flow from the fluid dispensing device enters the fluid dispensing assembly; and A housing, which is fixedly connected to the fluid distribution device and has a first spray nozzle.

2. The sealing assembly according to claim 1, characterized in that, The fluid distribution component includes: The chip assembly has a fluid inlet and a fluid outlet; A support member disposed inside the housing defines a second fluid channel for fluid communication with the liquid storage component. Fluid from the liquid storage component flows into the chip assembly through the fluid inlet after passing through the second fluid channel, and is ejected outward from the fluid outlet of the chip assembly.

3. The sealing assembly according to claim 2, characterized in that, The support includes a second receiving cavity for accommodating the chip base.

4. The sealing assembly according to claim 3, characterized in that, A filter element is disposed at one end of the second fluid channel away from the fluid dispensing device, wherein the second receiving cavity includes a recess recessed into the second fluid channel, and the recess accommodates at least a portion of the filter element, and wherein the sealing assembly further includes: A second seal is positioned between the chip base and the support member, and the second seal is interference-fitted with the filter member.

5. The sealing assembly according to claim 4, characterized in that, The chip base has a first receiving cavity defined inside for accommodating the chip assembly, wherein the chip assembly includes a first chip and a second chip disposed on the first chip, the first chip and the second chip being configured to allow fluid from the fluid dispensing device to converge into a vortex after passing through the first chip and be ejected outward from the second chip.

6. The sealing assembly according to claim 5, characterized in that, It also includes a first seal disposed between the second chip and the top of the first receiving cavity.

7. The sealing assembly according to claim 5, characterized in that, The first receiving cavity of the chip substrate defines a cavity surrounding the chip assembly between the cavity wall and the chip assembly, and wherein, after fluid from the fluid dispensing device enters the filter element for filtration via the second fluid channel, the fluid enters the cavity and flows into the chip assembly.

8. The sealing assembly according to claim 5, characterized in that, The chip base has a second spray nozzle at the top of the first receiving cavity for fluid to be sprayed from the second spray nozzle after passing through the chip assembly.

9. The sealing assembly according to claim 5, characterized in that, The first chip inside the first receiving cavity of the chip base is interference-fitted with the filter element.

10. The sealing assembly according to claim 5, characterized in that, The first chip has a first main surface and a circumferential side surface, and the first chip defines: At least two main surface grooves recessed from the first main surface; At least two side surface grooves recessed from the circumferential side surface, wherein each of the at least two side surface grooves is in fluid communication with one of the main surface grooves, thereby forming at least two first fluid channels; and A collecting cavity, which is in fluid communication with the at least two first fluid channels, allows fluid flowing into the collecting cavity via the at least two first fluid channels to converge into a vortex; and The second chip defines at least one through-hole through the thickness of the second chip, wherein the at least one through-hole is in fluid communication with the collecting cavity to allow fluid forming a vortex to be ejected outward through the at least one through-hole.

11. A spray assembly, characterized in that, Includes a sealing assembly according to any one of claims 1 to 10, the sealing assembly being used to provide a fluid seal between the spray assembly and the fluid distribution device when fluid flow from the fluid distribution device enters the fluid distribution assembly.

12. The spray assembly according to claim 11, characterized in that, The spray assembly further includes a chip base, the interior of which defines a first receiving cavity for accommodating the chip assembly, the chip assembly including a first chip and a second chip attached to the first chip, the first chip and the second chip being configured to allow fluid from the fluid dispensing device to converge into a vortex after passing through the first chip and be sprayed outward from the second chip.

13. A fluid distribution device, characterized in that, The fluid distribution device includes: The spray assembly according to any one of claims 11 to 12; and A pumping assembly for pumping fluid stored in the reservoir of the fluid distribution device to the spray assembly, so that the fluid is sprayed outward via the fluid distribution assembly.

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