Capillary device

Abstract

A capillary device is provided. The capillary device comprises a bearing element, a first metal braid layer and a second metal braid layer. The carrier element has an inner surface. The bearing element comprises a tubular part and a first end part connected with the tubular part, wherein the first end part is a closed end part. The first metal braid layer is disposed on the inner surface of the carrier element. The second metal braid layer is arranged on the first metal braid layer. The first metal braid layer covers 50%-80% of the perimeter of the inner diameter of the carrier element, and the second metal braid layer covers 70%-90% of the perimeter of the inner diameter of the first metal braid layer.

Description

Technical Field

[0001] This invention relates to capillary devices, and more particularly to capillary devices comprising at least two layers of metal braid. Background Technology

[0002] Capillary devices can include channels that enable capillary action, and therefore can be widely used in the field of fluid transport.

[0003] Generally, capillary devices typically consist of a sintered structure formed by sintering powder, and capillary action is achieved through this sintered structure. However, it is unavoidable that the sintered structure may suffer from problems such as cracks, powder shedding, uneven porosity, uneven thickness, difficulty in removing fixtures such as mandrels, and high production costs, leading to insufficient reliability limitations. Furthermore, this may result in insufficient maximum heat transfer (Qmax) when the capillary device is subsequently applied in fluid transport applications.

[0004] Therefore, although existing capillary devices have gradually met their intended uses, they are not yet completely satisfactory in all aspects. Thus, there are still some problems to be overcome regarding capillary devices. Utility Model Content

[0005] The capillary device of this invention includes at least two layers of metal braided wire disposed on a supporting element. Since the metal braided layer is formed by braiding metal wires, it avoids problems such as cracks, sintering powder shedding, uneven porosity, uneven thickness, difficulty in removing the fixture, and high production costs, thereby improving capillary function and / or reliability. Furthermore, the maximum heat transfer (Qmax) can be increased by adjusting the braiding angle, braiding method, metal wire type, and combination of different metal braided layers.

[0006] In some embodiments, a capillary device is provided. The capillary device includes a carrier element, a first metal braid layer, and a second metal braid layer. The carrier element has an inner surface. The carrier element includes a tubular portion and a first end connected to the tubular portion, wherein the first end is a closed end. The first metal braid layer is disposed on the inner surface of the carrier element. The second metal braid layer is disposed on the first metal braid layer. The first metal braid layer covers 50% to 80% of the inner diameter circumference of the carrier element, and the second metal braid layer covers 70% to 90% of the inner diameter circumference of the first metal braid layer.

[0007] In one embodiment of the present invention, the first metal braided layer has a plurality of first pores, and the second metal braided layer has a plurality of second pores, wherein the plurality of second pores are smaller than the plurality of first pores.

[0008] In one embodiment of the present invention, the first metal braid layer includes: a plurality of first metal wires; and a plurality of second metal wires, which are arranged alternately with the plurality of first metal wires, wherein a first included angle between the plurality of first metal wires and the plurality of second metal wires is less than or equal to 60 degrees.

[0009] In one embodiment of the present invention, the second metal braided layer further includes: a plurality of third metal wires; and a plurality of fourth metal wires, which are arranged alternately with the plurality of third metal wires, wherein a second included angle between the plurality of third metal wires and the plurality of fourth metal wires is less than or equal to 60 degrees.

[0010] In one embodiment of this utility model, the second included angle is smaller than the first included angle.

[0011] In one embodiment of the present invention, a third metal braided layer is further included, disposed on the second metal braided layer, wherein the third metal braided layer covers 80 to 100% of the inner diameter circumference of the second metal braided layer.

[0012] In one embodiment of the present invention, the first metal braided layer extends beyond the support element.

[0013] In one embodiment of the present invention, the second metal braided layer contacts the bearing element and the first metal braided layer.

[0014] In one embodiment of the present invention, the supporting element further includes: a plurality of recesses disposed on the inner surface; and a plurality of protrusions arranged alternately with the plurality of recesses, wherein the first metal braided layer contacts the plurality of protrusions, and the first metal braided layer is not disposed in the plurality of recesses.

[0015] In one embodiment of the present invention, the supporting element further includes: a second end, wherein the first end and the second end are respectively connected to the opposite ends of the tubular portion, and wherein the second end is a closed end or an open end.

[0016] The capillary device of this invention can be applied to various types of capillary equipment. To make the components and advantages of this invention more apparent and understandable, various embodiments are described below in conjunction with the accompanying drawings for detailed explanation. Attached Figure Description

[0017] The present invention can be more fully understood from the following detailed description when read in conjunction with the accompanying drawings. It is worth noting that, in accordance with industry standard practice, the components are not drawn to scale. In fact, for clarity, the dimensions of the components may be arbitrarily enlarged or reduced.

[0018] Figures 1A to 1C Each of the following is a cross-sectional schematic diagram of a capillary device according to an embodiment of the present invention;

[0019] Figure 1D A schematic diagram showing the first region of a capillary device according to an embodiment of the present invention;

[0020] Figure 1E and Figure 1F Each of the following is a cross-sectional schematic diagram of the second region of the capillary device according to an embodiment of the present invention;

[0021] Figure 1G and Figure 1H Each of the following is a perspective view of a capillary device according to an embodiment of the present invention;

[0022] Figures 2A to 2C Each of the following is a cross-sectional schematic diagram of a capillary device according to an embodiment of the present invention;

[0023] Figures 3A to 3C Each of the following is a cross-sectional schematic diagram of a capillary device according to an embodiment of the present invention;

[0024] Figures 4A to 4C Each of the following is a cross-sectional schematic diagram of a capillary device according to an embodiment of the present invention;

[0025] Figures 5A to 5C Each of the following is a cross-sectional schematic diagram of a capillary device according to an embodiment of the present invention;

[0026] Figures 6A to 6C Each of the following is a cross-sectional schematic diagram of a capillary device according to an embodiment of the present invention;

[0027] Figure 7 This diagram shows a cross-sectional view of a capillary device according to an embodiment of the present invention.

[0028] [Symbol Explanation]

[0029] 1,2,3,4,5,6: Capillary apparatus

[0030] 7: Capillary equipment

[0031] 10: Load-bearing element

[0032] 10P1: Tubular portion

[0033] 10P2: First end

[0034] 10P3: Second end

[0035] 10S1: Inner surface

[0036] 12: concave part

[0037] 14,14a,14b:convex part

[0038] 16, 22, 32, 42: Drainage area

[0039] 20: First metal braided layer

[0040] 21: First pore

[0041] 30: Second metal braided layer

[0042] 31: Second pore

[0043] 40: Third metal braided layer

[0044] 41: Third pore

[0045] 50: Fourth metal braided layer

[0046] 60: Fifth metal braided layer

[0047] 70: Carrier plate

[0048] 80: Capillary structure

[0049] A-A', B-B': Cross-section

[0050] A1: First included angle

[0051] A1': Complementary angle

[0052] ED: Direction of extension

[0053] H: Height

[0054] L1: First metal wire

[0055] L2: Second metal wire

[0056] RD: Radial direction

[0057] R1: First Region

[0058] R2: Second Region

[0059] T1: First thickness

[0060] T2: Second thickness

[0061] T3: Third Thickness

[0062] W: Width Detailed Implementation

[0063] The capillary device of this utility model is described in detail below with reference to various embodiments. It should be understood that the following description provides many different embodiments for implementing different ways of some embodiments of this utility model. The specific elements and arrangements described below are merely for simple and clear description of some embodiments of this utility model. Of course, these are only examples and not limitations on this utility model. Furthermore, similar and / or corresponding element symbols may be used in different embodiments to identify similar and / or corresponding elements for clear description of this utility model. However, the use of these similar and / or corresponding element symbols is only for simple and clear description of some embodiments of this utility model and does not represent any relationship between the different embodiments and / or structures discussed.

[0064] Furthermore, it should be understood that the ordinal numbers used in the specification and claims, such as "first," "second," etc., to modify elements, are not intended to imply any prior ordinal number for that element (or those elements), nor to indicate the order of one element with another, or the order of manufacturing processes. The use of these ordinal numbers is solely to clearly distinguish one named element from another element with the same name. The claims and specification may not use the same terminology; for example, a first element in the specification may be a second element in the claims.

[0065] In the following text, the terms "approximately," "about," and "substantially" generally indicate that a given value or range is within 10%, 5%, 3%, 2%, 1%, or 0.5%. The given quantities are approximate, meaning that the terms "approximately," "about," or "substantially" are implied even without specific mention. The phrases "range between the first and second values" or "first value to second value" indicate that the range includes the first value, the second value, and other values ​​in between. Furthermore, any two values ​​or directions used for comparison may have a certain degree of error.

[0066] In the following text, the terms "comprise," "containing," and "having" are open-ended terms and should therefore be interpreted as "containing but not limited to...". Thus, when the terms "comprise," "containing," and / or "having" are used in the description of this invention, they specify the presence of corresponding components, areas, steps, operations, and / or elements, but do not exclude the presence of one or more corresponding components, areas, steps, operations, and / or elements. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It is understood that these terms, for example, as defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant art and this invention, and should not be interpreted in an idealized or overly formal manner, unless specifically defined in embodiments of this invention.

[0067] In some embodiments, additional components may be added to the capillary device of the present invention. In some embodiments, some components of the capillary device of the present invention may be replaced or omitted. In some embodiments, additional steps may be provided before, during, and / or after the method of forming the capillary device. In some embodiments, some steps may be replaced or omitted, and the order of some steps is interchangeable. Furthermore, it should be understood that some steps may be replaced or deleted for other embodiments of the method. Moreover, in the present invention, the number and dimensions of the elements in the drawings are merely illustrative and are not intended to limit the scope of the present invention.

[0068] In this invention, the directions are not limited to the three axes of a Cartesian coordinate system such as the X, Y, and Z axes, and can be interpreted in a broader sense. In this invention, the directions can be in a cylindrical coordinate system. For ease of explanation, in the following text, the extension direction of the capillary device can be the extension direction ED, and the radial direction of the capillary device can be the radial direction RD. In some embodiments, the extension direction ED of the capillary device can be the backflow direction of the working fluid.

[0069] In this article, the term "capillary function" refers to the fluid transport effect caused by capillary phenomena, such as the flow rate of the working fluid, the return flow rate of the working fluid, or the flow velocity.

[0070] Reference Figures 1A to 1C Each of these figures shows a cross-sectional schematic diagram of a capillary device according to an embodiment of the present invention. Figure 1B Show along Figure 1A A schematic diagram of section A-A' in the image, and Figure 1C Show along Figure 1A A schematic diagram of the section B-B' captured in the image. (See diagram below.) Figures 1A to 1CAs shown, in some embodiments, the capillary device 1 may include a carrier element 10. In some embodiments, the carrier element 10 may have an inner surface 10S1. In some embodiments, the inner surface 10S1 may be a flat surface, so the carrier element 10 may be a smooth tube. In other embodiments, the inner surface 10S1 may be an uneven surface, so the carrier element 10 may be a rough tube such as a grooved tube.

[0071] In some embodiments, the carrier element 10 may include a tubular portion 10P1, a first end 10P2, and a second end 10P3. In some embodiments, along the extending direction ED, the first end 10P2 and the second end 10P3 may be respectively connected to opposite ends of the tubular portion 10P1. In some embodiments, at least one of the first end 10P2 and the second end 10P3 may be a closed end portion. A closed end portion means that the fluid within the closed end is not in communication with external fluid. Conversely, an open end portion means that it is in communication with external fluid. In some embodiments (e.g.) Figure 1A and Figure 2A As shown), the first end 10P2 can be a closed end, and the second end 10P3 can be an open end, therefore the carrier element 10 can serve as a capillary. In some embodiments (such as...), Figure 3A , Figure 4A , Figure 5A and Figure 6A As shown), the first end 10P2 can be a closed end, and the second end 10P3 can be a closed end, so the carrier element 10 can be used as a heat pipe.

[0072] like Figures 1A to 1C As shown, in some embodiments, the capillary device 1 may include at least two metal braided layers, and these at least two metal braided layers may be disposed on the inner surface 10S1 of the support element 10. Accordingly, compared to capillary devices including sintered structures, the capillary device of this invention does not have problems such as cracks, sintered powder shedding, uneven porosity, uneven thickness, difficulty in removing the fixture, and high production costs, thereby improving capillary function and / or reliability. Furthermore, compared to a surface formed by alternating stacking of different particles of sintered powder, the surface of the metal braided layer is smoother, providing a shorter backflow path and thus improving capillary function.

[0073] like Figure 1AAs shown, in some embodiments, at least two metal braided layers may be flush with the support element 10 along the extension direction ED. In other embodiments, at least two metal braided layers may extend beyond the support element 10 along the extension direction ED to facilitate subsequent connection with other elements. In some embodiments, the extension length beyond the support element 10 may be less than or equal to 10 mm. For example, the extension length may be 10 mm, 5 mm, 1 mm, 0.5 mm, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, at least two metal braided layers may extend into the first end 10P2, and at least two metal braided layers may extend into the second end 10P3.

[0074] like Figures 1A to 1C As shown, in some embodiments, the number of metal braided layers can be a positive integer from 2 to N, where N can be 100. For example, the number of metal braided layers can be 2, 3, 4, 5, 10, 20, 30, 50, 100, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the Nth metal braided layer may include a plurality of 2N-1th metal wires and a plurality of 2Nth metal wires, and the plurality of 2N-1th metal wires and the plurality of 2Nth metal wires may be arranged alternately. In some embodiments, when N is the same value, the plurality of 2N-1th metal wires and the plurality of 2Nth metal wires may be the same or different. In some embodiments, when N is different values, the plurality of 2N-1th metal wires may be the same or different, and the plurality of 2Nth metal wires may be the same or different. In some embodiments, the metal wires may further include a plurality of metal strands. For ease of explanation, embodiments with 3 (N=3) or 5 (N=5) metal braided layers are shown below, but the present invention is not limited thereto.

[0075] like Figures 1A to 1C As shown, in some embodiments, the capillary device 1 may include a first metal braid layer 20, a second metal braid layer 30, and a third metal braid layer 40. In some embodiments, the first metal braid layer 20 may be disposed on the inner surface 10S1 of the support element 10, the second metal braid layer 30 may be disposed on the first metal braid layer 20, and the third metal braid layer 40 may be disposed on the second metal braid layer 30. In some embodiments, the second metal braid layer 30 and the third metal braid layer 40 may not contact the inner surface 10S1 of the support element 10. In other words, the second metal braid layer 30 and the third metal braid layer 40 may be spaced apart from the inner surface 10S1 of the support element 10. In other embodiments, the second metal braid layer 30, the third metal braid layer 40, or a combination thereof may directly contact the inner surface 10S1 of the support element 10. Accordingly, the capillary function can be adjusted by adjusting the number, thickness, and / or type of the metal braid layers disposed on the support element 10.

[0076] like Figure 1B and Figure 1C As shown, in some embodiments, the carrier element 10 may include a plurality of recesses 12 and a plurality of protrusions 14. In some embodiments, the plurality of recesses 12 may be disposed on the inner surface 10S1. In some embodiments, the plurality of protrusions 14 may be staggered with the plurality of recesses 12. In some embodiments, the first metal braid layer 20 may directly contact the plurality of protrusions 14. In some embodiments, the first metal braid layer 20 may not be substantially disposed in the plurality of recesses 12. In other words, an accommodating space may be formed between the first metal braid layer 20 and the plurality of recesses 12 to facilitate the flow of working fluid therein. Accordingly, capillary function, reliability, and / or maximum heat transfer can be improved.

[0077] Reference Figure 1D It shows a schematic diagram of the first region R1 of the capillary device 1 according to an embodiment of the present invention. Figure 1D As shown, in some embodiments, the first metal braided layer 20 has a plurality of first pores 21, the second metal braided layer 30 has a plurality of second pores 31, and the third metal braided layer 40 has a plurality of third pores 41. In some embodiments, the size of the plurality of second pores 31 may be less than or equal to the size of the plurality of first pores 21. In some embodiments, the size of the plurality of third pores 41 may be less than or equal to the size of the plurality of second pores 31. The size of the pores may be, for example, the pore diameter, the total pore area, etc. For example, the size of the plurality of second pores 31 may be smaller than the size of the plurality of first pores 21, and the size of the plurality of third pores 41 may be smaller than the size of the plurality of second pores 31.

[0078] Accordingly, when the pores of the metal braided layer closer to the support element 10 are larger, and the pores of the metal braided layer farther away from the support element 10 are smaller, capillary function, reliability, and / or maximum heat transfer can be improved. Specifically, due to capillary action, the working fluid tends to be transported in the metal braided layer closer to the support element 10. Therefore, the pores of the metal braided layer closer to the support element 10 can be larger to facilitate the transport of the working fluid. Furthermore, when the pores of the metal braided layer farther away from the support element 10 are smaller, a greater surface tension can be provided to the working fluid. Therefore, it is advantageous for the working fluid to tend to be transported in the braided layer below it (the metal braided layer closer to the support element 10).

[0079] like Figure 1DAs shown, in some embodiments, the first metal braided layer 20 may cover 50% to 80% of the inner diameter circumference of the support element 10. For example, the first metal braided layer 20 may cover 50%, 55%, 60%, 65%, 70%, 75%, 80% of the inner diameter circumference of the support element 10, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto. The term "a first element may cover X% of the inner diameter circumference of a second element" represents the ratio of the arc length of the second element covered by the first element to the inner diameter circumference of the second element. In some embodiments, the inner diameter circumference of the support element 10 may be 20mm to 30mm. For example, the inner diameter circumference of the support element 10 may be 20mm, 22mm, 23mm, 24mm, 25mm, 30mm, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto.

[0080] like Figure 1D As shown, in some embodiments, the second metal braided layer 30 may cover 70% to 90% of the inner diameter circumference of the first metal braided layer 20. For example, the second metal braided layer 30 may cover 70%, 75%, 80%, 85%, 90% of the inner diameter circumference of the first metal braided layer 20, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the inner diameter circumference of the first metal braided layer 20 may be 18mm to 28mm. For example, the inner diameter circumference of the bearing element 10 may be 18mm, 20mm, 21mm, 22mm, 23mm, 28mm, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto.

[0081] like Figure 1D As shown, in some embodiments, the third metal braid layer 40 may cover 80% to 100% of the inner diameter circumference of the second metal braid layer 30. For example, the third metal braid layer 40 may cover 80%, 85%, 90%, 95%, 100% of the inner diameter circumference of the second metal braid layer 30, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the inner diameter circumference of the second metal braid layer 30 may be 16mm to 26mm. For example, the inner diameter circumference of the bearing element 10 may be 16mm, 18mm, 19mm, 20mm, 21mm, 26mm, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto.

[0082] For example, the inner circumference of the support element 10 can be 21.99 mm, the inner circumference of the first metal braid layer 20 can be 21.93 mm, and the inner circumference of the second metal braid layer 30 can be 21.86 mm. The porosity of the first metal braid layer 20 is 70%, meaning it covers 30% of the inner circumference of the support element 10. The porosity of the second metal braid layer 30 is 50%, meaning it covers 50% of the inner circumference of the first metal braid layer 20. The porosity of the third metal braid layer 40 is 30%, meaning it covers 70% of the inner circumference of the second metal braid layer 30. Accordingly, when the braid structure of the metal braid layer closer to the support element 10 is looser (larger pores) and the braid structure of the metal braid layer farther from the support element 10 is tighter (smaller gaps), capillary function, reliability, and / or maximum heat transfer can be improved.

[0083] like Figure 1D As shown, in some embodiments, at least two metal braided layers may cover 80%, 85%, 90%, or more of the inner diameter circumference of the support element 10. For example, even if the braid structure of each of the at least two metal braided layers is loose, when the at least two metal braided layers together cover 80% or more of the inner diameter circumference of the support element 10, the overflow of the working fluid in an unnecessary direction can be prevented.

[0084] like Figure 1D As shown, in some embodiments, in the radial direction RD, the first metal braided layer 20 may have a first thickness T1, the second metal braided layer 30 may have a second thickness T2, and the third metal braided layer 40 may have a third thickness T3. In some embodiments, the first thickness T1 may be greater than or equal to the second thickness T2, and the second thickness T2 may be greater than or equal to the third thickness T3. For example, the first thickness T1 may be greater than the second thickness T2, and the second thickness T2 may be greater than the third thickness T3. In some embodiments, the ratio of the first thickness T1 to the second thickness T2 (first thickness T1 / second thickness T2) may be 1.1 to 5. For example, the ratio of the first thickness T1 to the second thickness T2 may be 1.1, 2, 3, 4, 5, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the ratio of the second thickness T2 to the third thickness T3 (second thickness T2 / third thickness T3) may be 1.1 to 5. For example, the ratio of the second thickness T2 to the third thickness T3 can be 1.1, 2, 3, 4, 5 or any value between the aforementioned values ​​or any range of values, but the present invention is not limited thereto.

[0085] For example, when the first metal braid layer 20 covers 30% of the inner diameter circumference of the support element 10, the second metal braid layer 30 covers 50% of the inner diameter circumference of the first metal braid layer 20, and the third metal braid layer 40 covers 70% of the inner diameter circumference of the second metal braid layer 30, the ratio of the first thickness T1 to the second thickness T2 can be 1, and the ratio of the second thickness T2 to the third thickness T3 can be 1. Accordingly, when the thickness of the metal braid layer with larger pores closer to the support element 10 is greater, and the thickness of the braided structure of the metal braid layer with smaller pores further away from the support element 10 is thinner, capillary function, reliability, and / or maximum heat transfer can be improved. Specifically, when the thickness of the metal braid layer with larger pores is greater, the return water flow rate can be increased. When the thickness of the braided structure of the metal braid layer with smaller pores is thinner, a greater surface tension can be provided to the working fluid without excessively occupying the vapor passage.

[0086] like Figure 1D As shown, in some embodiments, the protrusion 14 may have a height H, and the recess 12 may have a corresponding depth. In some embodiments, the height H may be 0.1 mm to 0.5 mm. For example, the height H may be 0.1 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.4 mm, 0.5 mm, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, adjacent protrusions 14a and 14b may have a width W. In some embodiments, the width W may gradually decrease along the radial direction RD. Therefore, the protrusion 14 may have a trapezoidal shape that is narrower at the top and wider at the bottom, but the present invention is not limited thereto. In some embodiments, the width W may be 0.05 mm to 0.4 mm. For example, the width W may be 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.4 mm, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto.

[0087] Reference Figure 1E and Figure 1F Each of these figures shows a cross-sectional schematic diagram of the second region R2 of the capillary device 1 according to an embodiment of the present invention. Figure 1E and Figure 1FAs shown, in some embodiments, the first metal braid layer 20 may include multiple first metal wires L1 and multiple second metal wires L2, and the multiple second metal wires L2 may be arranged alternately with the multiple first metal wires L1. In some embodiments, the first metal wires L1 and the second metal wires L2 may each include a metal, and the metal may include copper (Cu), tin (Sn), gold (Au), silver (Ag), nickel (Ni), indium (In), platinum (Pt), palladium (Pd), iridium (Ir), titanium (Ti), chromium (Cr), tungsten (W), aluminum (Al), molybdenum (Mo), titanium (Ti), magnesium (Mg), zinc (Zn), their alloys or compounds, or combinations thereof, but the present invention is not limited thereto. For example, the first metal wires L1 and the second metal wires L2 may each include copper (Cu).

[0088] In some embodiments, the diameter of the first metal wire L1 may be less than or equal to 0.25 times the width W. For example, the diameter of the first metal wire L1 may be 0.25 times, 0.2 times, 0.15 times, 0.1 times, 0.05 times, or less of the width W, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the diameter of the first metal wire L1 may be 0.03 mm to 0.08 mm. For example, the diameter of the first metal wire L1 may be 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, or less, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the diameter of the second metal wire L2 may be less than or equal to 0.25 times the width W. For example, the diameter of the second metal wire L2 can be 0.25 times, 0.2 times, 0.15 times, 0.1 times, 0.05 times, or smaller of the width W, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the diameter of the second metal wire L2 can be 0.03 mm to 0.08 mm. For example, the diameter of the second metal wire L2 can be 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, or smaller, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto.

[0089] like Figure 1E and Figure 1FAs shown, in some embodiments, one of the first metal wire L1 and the second metal wire L2 can be used as a warp, and the other of the first metal wire L1 and the second metal wire L2 can be used as a weft. In some embodiments, the staggered arrangement can be a woven arrangement. For example, the woven arrangement can be plain woven, twill woven, satin woven, other similar woven arrangements, or combinations thereof, but the present invention is not limited thereto. Figure 1E As shown, since the first metal wire L1 and the second metal wire L2 can be plain woven, they are arranged in an alternating pattern, one above the other. Figure 1F As shown, multiple first metal wires L1 and multiple second metal wires L2 can be arranged in a staggered pattern of four down and four up. In other embodiments, the multiple first metal wires L1 and multiple second metal wires L2 can be arranged in other suitable patterns such as one up and three down, two up and four down.

[0090] like Figure 1E and Figure 1F As shown, in some embodiments, the first included angle A1 between the plurality of first metal wires L1 and the plurality of second metal wires L2 can be less than or equal to 60 degrees. The first included angle A1 can be an acute angle and can point towards the extending direction ED. For example, the first included angle A1 can be 60 degrees, 55 degrees, 50 degrees, 45 degrees, 40 degrees, 35 degrees, 30 degrees, 25 degrees, 20 degrees, or smaller, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto. Accordingly, the return path of the first metal braided layer 20 can be adjusted by adjusting the first included angle A1 pointing towards the extending direction ED. Specifically, the smaller the first included angle A1, the shorter the return path of the working fluid through the first metal braided layer 20, thereby increasing the flow rate of the working fluid that can be transmitted. Furthermore, the smaller the first included angle A1, the larger the effective contact area of ​​the first metal braided layer 20 with the working fluid. Therefore, capillary function can be improved.

[0091] like Figure 1E and Figure 1F As shown, in some embodiments, the sum of the first included angle A1 and the supplementary angle A1' is 180 degrees. In some embodiments, the difference between the first included angle A1 and the supplementary angle A1' may be greater than or equal to 60 degrees. For example, the difference between the first included angle A1 and the supplementary angle A1' may be 60 degrees, 70 degrees, 80 degrees, 90 degrees, 100 degrees, 120 degrees, 150 degrees or greater, or any value or a range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, such as Figure 1F The first included angle A1 shown can be smaller than, for example, Figure 1EThe first included angle A1 is shown. Accordingly, the return water path of the first metal braided layer 20 can be adjusted by adjusting the difference between the first included angle A1 and the complementary angle A1'. Specifically, the larger the difference between the first included angle A1 and the complementary angle A1', the shorter the return water path.

[0092] In some embodiments, the arrangement, materials, and angles of other metal braided layers (e.g., second metal braided layer 30, third metal braided layer 40, fourth metal braided layer, fifth metal braided layer, or other additional metal braided layers) may be similar to those of the first metal braided layer. In some embodiments, the second metal braided layer 30 may include multiple third metal wires and multiple fourth metal wires, and the multiple third metal wires may be arranged in an alternating pattern with the multiple fourth metal wires. In some embodiments, the second angle between the multiple third metal wires and the multiple fourth metal wires may be less than or equal to 60 degrees. The second angle may be an acute angle and may point towards the extending direction ED. In some embodiments, the second angle between the multiple third metal wires and the multiple fourth metal wires may be less than the first angle A1 between the multiple first metal wires L1 and the multiple second metal wires L2. Accordingly, when the braided structure of the metal braided layer closer to the carrier element 10 is looser, and the braided structure of the metal braided layer farther from the carrier element 10 is tighter, capillary function, reliability, and / or maximum heat transfer can be improved. In detail, due to capillary action, the working fluid tends to be transported in the metal braided layer closer to the support element 10. Therefore, the braided structure of the metal braided layer closer to the support element 10 can be made looser to facilitate the transport of the working fluid.

[0093] Reference Figure 1G and Figure 1H Each of these figures shows a perspective view of a capillary device 1 according to an embodiment of the present invention. Figure 1G As shown, in some embodiments, the first metal braided layer 20, the second metal braided layer 30, and the third metal braided layer 40 may extend beyond the second end 10P3 of the carrier element 10. For example... Figure 1HAs shown, in some embodiments, the support element 10, the first metal braid layer 20, the second metal braid layer 30, and the third metal braid layer 40 may each have drainage portions 16, 22, 32, and 42 to facilitate adjusting the flow direction of fluid when the capillary device 1 is connected to other elements. In some embodiments, the drainage portions 16 of the support element 10, 22 of the first metal braid layer 20, 32 of the second metal braid layer 30, and 42 of the third metal braid layer 40 may correspond to each other. In some embodiments, the bottom surface of the drainage portions 16, 22, 32, and 42 may be lower than the top surface of the second end portion 10P3. Accordingly, by providing the drainage portions 16, 22, 32, and 42, capillary function, reliability, and / or maximum heat transfer are improved. For example, the maximum heat transfer of the capillary device with drainage sections 16, 22, 32, and 42 can be 1.1 times, 1.2 times, 1.5 times, or greater than the maximum heat transfer of the capillary device without drainage sections 16, 22, 32, and 42.

[0094] Reference Figures 2A to 2C Each of these figures shows a cross-sectional schematic diagram of the capillary device 2 according to an embodiment of the present invention. Figure 2B Show along Figure 2A A schematic diagram of section A-A' in the image, and Figure 2C Show along Figure 2A A schematic diagram of the section B-B' captured in the image. (See diagram below.) Figures 2A to 2C As shown, in some embodiments, the first end 10P2 may be a closed end, and the second end 10P3 may be an open end. In some embodiments, the first metal braided layer 20, the second metal braided layer 30, and the third metal braided layer 40 may be disposed in the tubular portion 10P1 and the second end 10P3, and may not be disposed in the first end 10P2. Accordingly, the vapor passage adjacent to the first end 10P2 may not be occupied, and the capillary function adjacent to the second end 10P3 may be improved.

[0095] Reference Figures 3A to 3C Each of these figures shows a cross-sectional schematic diagram of the capillary device 3 according to an embodiment of the present invention. Figure 3B Show along Figure 3A A schematic diagram of section A-A' in the image, and Figure 3C Show along Figure 3A A schematic diagram of the section B-B' captured in the image. (See diagram below.) Figures 3A to 3C As shown, in some embodiments, the first end 10P2 and the second end 10P3 may be closed ends. In some embodiments, the first metal braided layer 20, the second metal braided layer 30 and the third metal braided layer 40 may be disposed in the tubular portion 10P1, the first end 10P2 and the second end 10P3.

[0096] Reference Figures 4A to 4C Each of these figures shows a cross-sectional schematic diagram of the capillary device 4 according to an embodiment of the present invention. Figure 4B Show along Figure 4A A schematic diagram of section A-A' in the image, and Figure 4C Show along Figure 4A A schematic diagram of the section B-B' captured in the image. (See diagram below.) Figures 4A to 4C As shown, in some embodiments, the first end 10P2 and the second end 10P3 may be closed ends. In some embodiments, the first metal braid layer 20, the second metal braid layer 30, and the third metal braid layer 40 may be disposed in the tubular portion 10P1 and the second end 10P3, and may not be disposed in the first end 10P2. In some embodiments, the first metal braid layer 20 may expose the inner surface 10S1 of the carrier element 10. Accordingly, by not providing a metal braid layer in the first end 10P2, capillary function, reliability, and / or maximum heat transfer are improved. Specifically, the first end 10P2 may serve as the cold end of the heat pipe, and the second end 10P3 may serve as the hot end of the heat pipe. Therefore, when a metal braid layer is provided in the hot end, the size of the vapor channel can be reduced to facilitate heat transfer to the cold end. On the other hand, when a metal braid layer is not provided in the cold end, the size of the vapor channel can be increased to facilitate heat transfer.

[0097] Figures 5A to 5C Each of the following is a cross-sectional schematic diagram of a capillary device 5 according to an embodiment of the present invention. Figure 5B Show along Figure 5A A schematic diagram of section A-A' in the image, and Figure 5C Show along Figure 5A A schematic diagram of the section B-B' captured in the image. (See diagram below.) Figures 5A to 5C As shown, in some embodiments, the first end 10P2 and the second end 10P3 may be closed ends. In some embodiments, the capillary device 5 may further include a fourth metal braid layer 50 and a fifth metal braid layer 60. In some embodiments, the fourth metal braid layer 50 may be disposed on the third metal braid layer 40, and the fifth metal braid layer 60 may be disposed on the fourth metal braid layer 50. In some embodiments, the arrangement method, material, and angle of the fourth metal braid layer 50 and the fifth metal braid layer 60 may be similar to the arrangement method, material, and angle of the first metal braid layer. In some embodiments, the first metal braid layer 20, the second metal braid layer 30, the third metal braid layer 40, the fourth metal braid layer 50, and the fifth metal braid layer 60 may be disposed in the tubular portion 10P1, the first end 10P2, and the second end 10P3.

[0098] like Figures 5A to 5CAs shown, in some embodiments, the fourth metal braid layer 50 may cover 10% to 25% of the inner diameter circumference of the third metal braid layer 40. For example, the fourth metal braid layer 50 may cover 10%, 17.5%, 15%, 20%, 22.5%, 25% of the inner diameter circumference of the third metal braid layer 40, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the fourth metal braid layer 50 may expose at least 50% of the inner diameter circumference of the third metal braid layer 40. For example, the fourth metal braid layer 50 may expose 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85% of the inner diameter circumference of the third metal braid layer 40, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto. In some embodiments, the fourth metal braid layer 50 may be provided in relation to an external heat source. Accordingly, while providing a precise return water channel at the corresponding heat source, more steam channels can be retained.

[0099] like Figures 5A to 5C As shown, in some embodiments, the fifth metal braid layer 60 may cover 7% to 22% of the inner diameter circumference of the fourth metal braid layer 50. For example, the fifth metal braid layer 60 may cover 7%, 10%, 15%, 20%, 22% of the inner diameter circumference of the fourth metal braid layer 50, or any value or range of values ​​between the aforementioned values, but the present invention is not limited thereto.

[0100] For example, the inner diameter circumference of the bearing element 10 can be 21.99 mm, the inner diameter circumference of the first metal braid layer 20 can be 21.93 mm, the inner diameter circumference of the second metal braid layer 30 can be 21.86 mm, the inner diameter circumference of the third metal braid layer 40 can be 21.80 mm, and the inner diameter circumference of the fourth metal braid layer 50 can be 5.5 mm. The first metal braid layer 20 can cover 30% of the inner diameter circumference of the bearing element 10, the second metal braid layer 30 can cover 50% of the inner diameter circumference of the first metal braid layer 20, the third metal braid layer 40 can cover 70% of the inner diameter circumference of the second metal braid layer 30, the mesh porosity of the fourth metal braid layer 50 is 0%, that is, the fourth metal braid layer 50 can cover 100% of the inner diameter circumference of the third metal braid layer 40, and the mesh porosity of the fifth metal braid layer 60 is 0%, that is, the fifth metal braid layer 60 can cover 100% of the inner diameter circumference of the fourth metal braid layer 50. Accordingly, more steam channels can be retained while providing precise return water channels at the corresponding heat sources for the fourth metal braid layer 50 and the fifth metal braid layer 60.

[0101] like Figures 5A to 5CAs shown, in some embodiments, the fourth metal braided layer 50 may have a fourth thickness in the radial direction RD, and the fifth metal braided layer 60 may have a fifth thickness. In some embodiments, the fourth thickness may be greater than or equal to the fifth thickness. For example, the ratio of the first thickness T1 to the second thickness T2 may be 1, the ratio of the second thickness T2 to the third thickness T3 may be 1, the ratio of the third thickness T3 to the fourth thickness may be 1, and the ratio of the fourth thickness to the fifth thickness may be 1. Accordingly, more steam passages can be retained while providing precise return water channels.

[0102] like Figures 5A to 5C As shown, in some embodiments, the fourth metal braid layer 50 may have a plurality of fourth pores, and the fifth metal braid layer 60 may have a plurality of fifth pores. In some embodiments, the size of the plurality of fourth pores may be less than or equal to the size of the plurality of fifth pores. For example, the diameters of the first pore 21, the second pore 31, and the third pore 41 may be the same, the diameters of the fourth pores and the fifth pores may be the same, and the diameter of the first pore 21 is larger than the diameter of the fourth pores. Accordingly, when the pores of the metal braid layer closer to the support element 10 are larger, and the pores of the metal braid layer farther away from the support element 10 are smaller, capillary function, reliability, and / or maximum heat transfer can be improved.

[0103] Reference Figures 6A to 6C Each of these figures shows a cross-sectional schematic diagram of a capillary device 6 according to an embodiment of the present invention. Figure 6B Show along Figure 6A A schematic diagram of section A-A' in the image, and Figure 6C Show along Figure 6A A schematic diagram of the section B-B' captured in the image. (See diagram below.) Figures 6A to 6C As shown, in some embodiments, the first end 10P2 and the second end 10P3 may be closed ends. In some embodiments, the fourth metal braid layer 50 and the fifth metal braid layer 60 may be disposed in the first end 10P2, and the first metal braid layer 20, the second metal braid layer 30, and the third metal braid layer 40 may not be disposed in the first end 10P2. Figure 6A and Figure 6BAs shown, the fourth metal braided layer 50 can directly contact the inner surface 10S1 of the carrier element 10. Accordingly, by providing different numbers of metal braided layers in the first end 10P2 and the second end 10P3, capillary function, reliability, and / or maximum heat transfer can be improved. Specifically, the first end 10P2 can serve as the cold end of the heat pipe, and the second end 10P3 can serve as the hot end of the heat pipe. Therefore, when more layers of metal braided layers are provided in the hot end, the size of the vapor channel can be reduced to facilitate heat transfer to the cold end. In other words, when fewer layers of metal braided layers are provided in the cold end, the size of the vapor channel can be increased to facilitate heat transfer.

[0104] Reference Figure 7 It shows a cross-sectional schematic diagram of a capillary device 7 according to an embodiment of the present invention. For ease of explanation, Figure 7 The illustration shows a capillary device 7 including the capillary device 1, but the present invention is not limited thereto. In some embodiments, the capillary device 7 may be a three-dimensional heat-conducting plate (3D vapor chamber). In some embodiments, the capillary device 7 may also include a carrier plate 70 and a capillary structure 80 disposed on the carrier plate 70. In some embodiments, the material of the carrier plate 70 may be the same as or different from the material of the support element 10. In some embodiments, the carrier plate 70 and the capillary structure 80 may be another capillary device. Figure 7 As shown, since the first metal braided layer 20 of the capillary device 1 extends beyond the support element 10, it is advantageous to connect the first metal braided layer 20 to the capillary structure 80.

[0105] In some embodiments, one or more of the capillary devices 1-6, or capillary device 7, may be applied in the field of fluid transport. In some embodiments, one or more of the capillary devices 1-6 may be applied in capillary device 7, and capillary device 7 may be a heat dissipation device. For example, the heat dissipation device may include a heat spreader, a heat conduction plate, a heat dissipation module, the like, or a combination thereof. For example, the heat conduction plate may include a three-dimensional heat conduction plate.

[0106] Accordingly, the capillary device of this invention is free from limitations such as cracks, sinter powder shedding, uneven porosity, uneven thickness, difficulty in removing fixtures, and high production costs. The capillary device of this invention can improve capillary function, reliability, and / or maximum heat transfer. The capillary device of this invention can be a high-power capillary device.

[0107] The scope of protection of this utility model is not limited to the processes, machines, manufacturing, material composition, apparatus, methods, and steps described in the specific embodiments of this specification. Any process, machine, manufacturing, material composition, apparatus, method, and step that is currently or will be developed can be understood from the disclosure of this utility model, as long as it can perform substantially the same function or obtain substantially the same result in the embodiments described herein. Therefore, the scope of protection of this utility model includes the aforementioned processes, machines, manufacturing, material composition, apparatus, methods, and steps. No embodiment or claim of this utility model is required to achieve all the purposes, advantages, and / or features disclosed in this utility model.

[0108] The above outlines several embodiments to enable those skilled in the art to better understand the viewpoints of the present invention. Those skilled in the art should understand that they can design or modify other processes and structures based on the embodiments of the present invention to achieve the same purpose and / or advantages as the embodiments described herein. Those skilled in the art should also understand that such equivalent processes and structures do not depart from the spirit and scope of the present invention, and that they can make various changes, substitutions, and replacements without departing from the spirit and scope of the present invention.

Claims

1. A capillary device, characterized in that, include: A carrier element has an inner surface and includes a tubular portion and a first end connected to the tubular portion, wherein the first end is a closed end; A first metal braided layer is disposed on the inner surface of the carrier element; and A second metal braided layer is disposed on the first metal braided layer; The first metal braided layer covers 50% to 80% of the inner diameter circumference of the bearing element, and the second metal braided layer covers 70% to 90% of the inner diameter circumference of the first metal braided layer.

2. The capillary device as described in claim 1, characterized in that, The first metal braided layer has a plurality of first pores, and the second metal braided layer has a plurality of second pores, wherein the plurality of second pores are smaller than the plurality of first pores.

3. The capillary device as described in claim 1, characterized in that, The first metal braided layer includes: Multiple first metal wires; and Multiple second metal wires are arranged interlaced with the multiple first metal wires, wherein a first included angle between the multiple first metal wires and the multiple second metal wires is less than or equal to 60 degrees.

4. The capillary device as described in claim 3, characterized in that, The second metal braided layer also includes: Multiple third metal wires; and Multiple fourth metal wires are interspersed with the multiple third metal wires, wherein a second included angle between the multiple third metal wires and the multiple fourth metal wires is less than or equal to 60 degrees.

5. The capillary device as described in claim 4, characterized in that, The second included angle is smaller than the first included angle.

6. The capillary device as claimed in claim 1, characterized in that, Also includes: A third metal braided layer is disposed on the second metal braided layer. The third metal braided layer covers 80 to 100% of the inner diameter circumference of the second metal braided layer.

7. The capillary device as claimed in claim 1, characterized in that, The first metal braided layer extends beyond the load-bearing element.

8. The capillary device as claimed in claim 1, characterized in that, The second metal braided layer contacts the load-bearing element and the first metal braided layer.

9. The capillary device as claimed in claim 1, characterized in that, The load-bearing element also includes: Multiple recesses are provided on the inner surface; and Multiple protrusions are arranged alternately with the multiple concave portions. The first metal braided layer contacts the plurality of protrusions, and the first metal braided layer is not disposed in the plurality of recesses.

10. The capillary device as claimed in claim 1, characterized in that, The load-bearing element also includes: A second end, wherein the first end and the second end are respectively connected to opposite ends of the tubular portion, and The second end can be either a closed end or an open end.

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