TWI849860B - Asymmetric fluid guiding structure - Google Patents

Abstract

The asymmetric fluid guiding structure disclosed in the present invention includes a first cavity, a second cavity and a first connecting tube, wherein a first chamber is formed inside the first cavity; the second cavity is separated from the first cavity and a second chamber is formed inside the second cavity; the first connecting tube is bridged between the first cavity and the second cavity with the two ends of the tube axis, so that the first cavity and the second cavity are connected through the space inside the tube, and the center point of the space connecting the first connecting tube and the second cavity is eccentric to one side of the center axis of the second cavity, so that an external fluid can be offset to one side of the center axis of the second cavity and enter the second cavity when entering the second cavity from the first cavity through the space inside the tube of the first connecting tube. Accordingly, the present invention utilizes an eccentric structural design to guide the fluid while also properly controlling the retention time of the fluid inside it.

Description

Asymmetric fluid guiding structure

The present invention relates to fluid guiding technology, and in particular to an asymmetric fluid guiding structure.

It is known that a nebulizer is usually equipped with a guide cover at its air outlet to concentrate and guide the direction of the mist flow to prevent the mist from escaping directly into the atmosphere. However, when the mist flows in the inner space of the guide cover, it will inevitably contact the inner wall surface of the guide cover and condense into water droplets. Especially when the nebulizer is used continuously for a long time, as the water droplets accumulate, a large amount of liquid gathers inside the guide cover. Therefore, in addition to possibly affecting the performance of the nebulizer, it will also affect the user's experience and effect.

To solve this problem, there are usually two ways to improve it. One is to disassemble the guide cover to clean the accumulated water inside the guide cover; the other is to adjust the use time and frequency of the atomizer, such as intermittently opening and closing the atomizer to reduce the problem of water droplet accumulation. However, these methods still cause inconvenience in use, so there is a need for improvement.

Therefore, the main purpose of the present invention is to provide an asymmetric fluid guiding structure, which utilizes an eccentric structural design to guide the fluid while also properly controlling the residence time of the fluid inside it.

Therefore, in order to achieve the above-mentioned purpose, the asymmetric fluid guiding structure provided by the present invention mainly includes a first cavity, a second cavity and a first connecting tube, wherein a first chamber is formed inside the first cavity; the second cavity is separated from the first cavity, and a second chamber is formed inside the first connecting tube; the first connecting tube is bridged between the first cavity and the second cavity with the two ends of the tube axis, so that the first cavity and the second cavity are connected through the space inside the tube, and the center point of the space where the first connecting tube and the second cavity are connected to each other is eccentric to one side of the center axis of the second cavity, so that an external fluid can be offset to one side of the center axis of the second cavity and enter the second cavity when entering the second cavity from the first cavity through the space inside the tube of the first connecting tube.

In one embodiment, the present invention further includes a first opening, a second opening, a third opening and a fourth opening, wherein the first opening and the second opening are respectively arranged on two opposite ends of the first cavity; the third opening and the fourth opening are respectively arranged on two opposite ends of the second cavity, and the geometric center of the third opening is offset from the central axis of the second cavity; and the first connecting tube is connected to the second opening on the first cavity and the third opening on the second cavity with two ends of the tube axis, so that the first cavity is connected to the second cavity, and the first opening, the first cavity, the second opening, the space inside the tube of the first connecting tube, the third opening, the second cavity and the fourth opening form a flow path.

Specifically, the contour shape of the edge of the third opening is elliptical.

In one embodiment, in the tube axis direction of the first connecting tube, the tube body of the first connecting tube substantially extends from the first cavity toward the second cavity, and in accordance with the contour shape of the third opening edge, a deviation angle is formed between the extension direction of a local tube wall of the tube body and the central axis of the second cavity, so that the inner diameter of the first connecting tube gradually increases from the first cavity toward a direction away from the second cavity. The deviation angle is between 5∘ and 20∘.

Furthermore, in the radial direction of the first connecting tube, the tube wall of the first connecting tube is divided into a plurality of wall surfaces which are sequentially connected to each other and distributed around the central axis of the second chamber, and at least one of the wall surfaces has the offset angle with the central axis of the second chamber in the direction along which the tube axis of the first connecting tube extends, and at least another of the wall surfaces is parallel with the central axis of the second chamber in the direction along which the tube axis of the first connecting tube extends.

In one embodiment, the present invention further comprises a flow guide tube, one end of the tube axis of which is connected to the fourth opening on the second cavity, and the inner diameter of the flow guide tube gradually increases in a direction away from the second cavity.

In one embodiment, the present invention further comprises a second connecting tube, wherein one end of the tube shaft is serially connected to the first opening on the first cavity, and the other end of the tube shaft is detachably connected to an external fluid supply unit.

In one embodiment, the central axis of the first chamber is coaxial and collinear with the central axis of the second chamber.

First, the spatial shape of the "chamber" described in the present invention can be but not limited to spherical, cubic, elliptical, conical or other three-dimensional geometric structures, and the volume of the chamber can be changed arbitrarily according to actual needs.

The "opening" described in the present invention may have a circular, elliptical, square, rectangular, polygonal or other planar geometric structure, and the size of the opening may also be changed arbitrarily according to actual needs.

Please refer to Figures 1 to 4, which are the asymmetric fluid guiding structure provided in the preferred embodiment of the present invention, which mainly includes a first cavity 10, a second cavity 20, a first connecting tube 30, a first opening 40, a second opening 50, a third opening 60, a fourth opening 70, a guide tube 80 and a second connecting tube 90, and the first cavity 10, the second cavity 20, the first connecting tube 30, the guide tube 80 and the second connecting tube 90 are integrally connected to each other and interconnected to form a flow path.

Specifically, a first chamber 11 is formed inside the first cavity 10, and the spatial shape of the first chamber 11 in this example is roughly spherical, and the first opening 40 and the second opening 50 are respectively arranged along the central axis L1 of the first cavity 10, and are respectively arranged on two opposite end sides of the first cavity 10, and are respectively connected to the first chamber 11. In this example, the edge contours of the first opening 40 and the second opening 50 are both circular, and the aperture D1 of the first opening 40 is larger than the aperture D2 of the second opening 50.

The second cavity 20 is separated from the first cavity 10, and a second chamber 21 is formed inside the second cavity 20. The spatial shape of the second cavity 21 in this example is generally spherical, and the third opening 60 and the fourth opening 70 are respectively arranged on two opposite ends of the second cavity 20, and the geometric center O of the third opening 60 is offset from the central axis L2 of the second cavity 21, as shown in FIG. 4, and the fourth opening 70 is located on the extension line of the central axis L2 of the second cavity 20, as shown in FIG. 2. Furthermore, in this example, the outer contour of the hole edge of the fourth opening 70 is circular, the outer contour of the hole edge of the third opening 60 is approximately elliptical, and the maximum hole diameter D3 of the third opening 60 is larger than the hole diameter D4 of the fourth opening 70, and the overall hole area of the third opening 60 is larger than the overall hole area of the second opening 50. The hole diameter D4 of the fourth opening 70 is equal to the hole diameter D2 of the second opening 50. In addition, the central axis L1 of the first chamber 11 is coaxial and collinear with the central axis L2 of the second chamber 21, and the maximum inner diameter H1 of the first chamber 11 is larger than the maximum inner diameter H2 of the second chamber 21. In other possible implementations, the relationship between the central axis L1 of the first chamber 11 and the central axis L2 of the second chamber 21 can also be configured in a non-coaxial manner, and the maximum inner diameter H1 of the first chamber 11 can also be equal to or smaller than the maximum inner diameter H2 of the second chamber 21.

The first connecting tube 30 is connected to the second opening 50 on the first cavity 10 and the third opening 60 on the second cavity 20 at both ends of the tube axis, so that the first chamber 11 and the second chamber 21 are connected through the inner space of the tube. Accordingly, the flow path is formed through the mutually connected first opening 40, the first chamber 11, the second opening 50, the inner space of the first connecting tube 30, the third opening 60, the second chamber 21 and the fourth opening 70. In particular, because the third opening 60 is located at an eccentric position and its shape is elliptical, the center point of the space where the first connecting tube 30 and the second chamber 21 are connected to each other is eccentric to one side of the central axis L2 of the second chamber 21. Furthermore, in the axial direction of the first connecting tube 30, the tube body of the first connecting tube 30 substantially extends from the first cavity 10 toward the second cavity 20, and in accordance with the contour shape of the edge of the third opening 60, a deviation angle θ is formed between the extension direction of the local tube wall of the tube body and the central axis L2 of the second cavity 21, so that the inner diameter H1 of the first connecting tube 30 gradually expands from the first cavity 10 toward the direction away from the second cavity 20. The deviation angle θ is between 5∘ and 20∘, preferably between 5.56∘ and 10.15∘.

In more detail, in the radial direction of the first connecting tube 30, the tube wall of the first connecting tube 30 is divided into a plurality of wall surfaces which are sequentially connected to each other and distributed around the central axis L2 of the second chamber 21, and at least one of the wall surfaces has the offset angle θ with the central axis L2 of the second chamber 21 along the direction in which the tube axis of the first connecting tube extends, and at least another of the wall surfaces is parallel to the central axis L2 of the second chamber 21 along the direction in which the tube axis of the first connecting tube extends, please refer to FIGS. 1 to 3 respectively.

The guide tube 80 is connected to the fourth opening 70 on the second cavity 20 at one end of the tube axis, and the inner diameter H4 of the guide tube 80 gradually increases in the direction away from the second cavity 20 , so that the maximum inner diameter H4 of the guide tube 80 is larger than the hole diameter D4 of the fourth opening 70 .

The second connecting tube 90 is connected in series to the first opening 40 on the first cavity 10 with one end of the tube shaft, and the inner diameter H5 of the second connecting tube 90 is equal to the hole diameter D1 of the first opening 40, and the other end of the tube shaft is used to be detachably connected to an external fluid supply unit (not shown) to receive the fluid generated by the fluid supply unit and flow in the flow path. The connection technology between the fluid supply unit and the second connecting tube 90 can be, but not limited to, such as fixed connection, screw lock, embedding, clamping, etc. Furthermore, the fluid supply unit used in this example is an atomizer, and the fluid generated by it is mist. In addition, at least one diffusion hole 91 is formed through the tube wall of the second connecting tube 90 , and the diameter of the diffusion hole 91 is smaller than the inner diameter H5 of the second connecting tube 90 .

Through the composition of the above components, the specific usage of the present invention is as follows.

When the mist flows on the flow path, it first enters the first chamber 11 from the outside through the second connecting tube 90. Since the maximum inner diameter H1 of the first chamber 11 is larger than the inner diameter H5 of the second connecting tube 90, the mist entering the first chamber 11 has its flow rate slowed down due to the change in tube diameter and converges in the first chamber 11.

Then, after the mist accumulates to a certain amount in the first chamber 11, it flows into the second chamber 21 through the first connecting tube 30. Since the maximum inner diameter H2 of the second chamber 21 is greater than the inner diameter H3 of the first connecting tube 30, the flow rate of the mist entering the second chamber 21 slows down due to the change in tube diameter. In addition, in particular, since the center point of the space where the first connecting tube 30 and the second chamber 21 are connected to each other is eccentric to one side of the central axis L2 of the second chamber 21, when the mist enters the second chamber 21, it can be offset to one side of the central axis L2 of the second chamber 21 to enter the second chamber 21, and flow out along the inner wall surface of the second chamber 20 toward the location of the fourth opening 70. Accordingly, while slowing down the mist flow rate, the time for the mist to stagnate in the second chamber 21 can be properly controlled, and the time for the mist to contact the inner wall surface of the second chamber 20 can be reduced, so as to avoid a large amount of mist condensing into water droplets or water droplets and accumulating in the second chamber 21.

The above is only one possible implementation of the present invention, but it is not limited thereto. The same effect can be achieved by other different shapes and structural changes that can form differences, and these equivalent technologies are all within the scope of protection of the present invention.

For example, in other possible implementations, the first connecting tube 30 may also be a straight tube, and connected to the second cavity 20 with its tube axis having the offset angle θ relative to the central axis L2 of the second cavity 21, and similar effects as described above may also be achieved.

10: First cavity 11: First chamber 20: Second cavity 21: Second chamber 30: First connecting tube 40: First opening 50: Second opening 60: Third opening 70: Fourth opening 80: Flow guide tube 90: Second connecting tube 91: Evaporation hole L1, L2: Center axis D1, D2, D3, D4: Aperture H1, H2, H3, H4, H5: Inner diameter O: Geometric center θ: Deviation angle

FIG. 1 is a three-dimensional assembly diagram of a preferred embodiment of the present invention. FIG. 2 is a cross-sectional view of FIG. 1 along section line 2-2. FIG. 3 is a cross-sectional view of FIG. 1 along section line 3-3. FIG. 4 is a cross-sectional view of FIG. 1 along section line 4-4.

10: First cavity

20: Second cavity

30: First connecting pipe

80: Flow guide tube

90: Second connecting pipe

91: Escape hole

Claims (6)

An asymmetric fluid guiding structure includes: a first cavity, a first chamber is formed inside the first cavity; a second cavity is separated from the first cavity and a second chamber is formed inside the second cavity; a first connecting tube is bridged between the first cavity and the second cavity with the two ends of the tube axis so that the first chamber and the second chamber are connected through the space inside the tube, and the center point of the space connecting the first connecting tube and the second chamber is eccentric to the first cavity. The first opening and the second opening are respectively provided at two opposite ends of the first cavity; the third opening and the fourth opening are respectively provided at two opposite ends of the second cavity, and the geometric center of the third opening is The first connecting tube is relatively offset from the central axis of the second chamber; wherein the first connecting tube is connected to the second opening on the first chamber and the third opening on the second chamber at both ends of the tube axis, so that the first chamber is connected to the second chamber, and the first opening, the first chamber, the second opening, the space inside the tube of the first connecting tube, the third opening, the second chamber and the fourth opening form a flow path; wherein, at the tube axis of the first connecting tube In the direction, the tube body of the first connecting tube substantially extends from the first cavity toward the second cavity, and the contour shape of the third opening edge is matched to make the extension direction of the local tube wall of the tube body and the central axis of the second cavity have a deviation angle, so that the inner diameter of the first connecting tube gradually expands from the first cavity toward the direction away from the second cavity; wherein the central axis of the first cavity is coaxial and collinear with the central axis of the second cavity. The asymmetric fluid guiding structure as described in claim 1, wherein the contour shape of the edge of the third opening is elliptical. An asymmetric fluid guiding structure as described in claim 1 or 2, wherein the deviation angle is between 5° and 20°. The asymmetric fluid guiding structure as described in claim 1 or 2, wherein, in the radial direction of the first connecting tube, the tube wall of the first connecting tube is divided into a plurality of wall surfaces which are sequentially connected to each other and distributed around the central axis of the second chamber, and at least one of the wall surfaces has the offset angle with the central axis of the second chamber along the direction in which the tube axis of the first connecting tube extends, and at least another of the wall surfaces is parallel to the central axis of the second chamber along the direction in which the tube axis of the first connecting tube extends. The asymmetric fluid guiding structure as described in claim 1 or 2 further includes a flow guide tube, one end of the tube axis is connected to the fourth opening on the second cavity, and the inner diameter of the flow guide tube gradually increases in the direction away from the second cavity. The asymmetric fluid guiding structure as described in claim 1 or 2 further includes a second connecting tube, one end of which is connected in series to the first opening on the first cavity, and the other end of which is detachably connected to an external fluid supply unit.

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