Spray cooling device

Abstract

This invention is directed to a spray cooling device for spraying a working fluid. The spray cooling device has a nozzle array and a spray lid. The nozzle array has a base for supplying the working fluid. The base has a spray surface provided with a plurality of nozzles arranged in an array for spraying the working fluid. The spray lid has a heat dissipation surface and a heat absorption surface corresponding to each other, and the heat dissipation surface faces the spray surface. The heat dissipation surface is provided with a plurality of protrusion structures arranged in an array corresponding to the nozzles. Each nozzle is defined with a spray path, and each nozzle sprays the working fluid along the spray path to the protrusion structure corresponding thereto.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This patent application claims the benefit of United States Provisional Patent Application No. 63 / 790,100, filed Apr. 17, 2025, which is incorporated by reference herein.BACKGROUND OF THE INVENTIONTechnical Field

[0002] This invention is directed to a fluid cooling device, in particular to a spray cooling device.Description of Related Art

[0003] A spray cooling device of related art may absorb heat from a heat source (such as a chip) through a thermal conductor, and it may spray a liquid working fluid onto the thermal conductor through nozzles. The liquid working fluid would be vaporized on the surfaces of the thermal conductor so as to quickly remove the heat contained in the thermal conductor. If the liquid working fluid accumulates on the surface of the thermal conductor, it will be difficult to vaporize the working fluid, so that the heat cannot be removed. Therefore, the relative position of the nozzles and the surface structure of the thermal conductor is crucial. The technology of spray cooling devices focuses on how to quickly cover and pass the working fluid through the surface of the thermal conductor.

[0004] In views of this, in order to solve the above disadvantage, the inventor studied related technology and provided a reasonable and effective solution in this invention.SUMMARY OF THE INVENTION

[0005] This invention is directed to a spray cooling device.

[0006] This invention is directed to a spray cooling device for spraying a working fluid. The spray cooling device has a nozzle array and a spray lid. The nozzle array has a base for supplying the working fluid, the base has a spray surface, and a plurality of nozzles disposed in an array and arranged on the spray surface for spraying the working fluid. The spray lid has a heat dissipation surface and a heat absorption surface opposite to the heat dissipation surface, the heat dissipation surface faces the spray surface, and a plurality of protrusion structures are disposed in an array and arranged on the heat dissipation surface corresponding to the nozzles. Each of the nozzles is defined with a spray path, and each of the nozzles sprays the working fluid to the corresponding protrusion structure along the spray path.

[0007] In one embodiment of this invention, a curved reflective surface is disposed on the spray surface, the curved reflective surface is surrounded by the nozzles, and the protrusion structures are arranged radially about a center of the curved reflective surface.

[0008] In one embodiment of this invention, a curved reflective surface is defined on the spray surface, the nozzles are arranged in two straight rows, and the two straight rows are disposed opposite to each other on two sides of the curved reflective surface.

[0009] In one embodiment of this invention, the nozzles and the protrusion structures are respectively arranged in radial arrangements corresponding to each other.

[0010] In one embodiment of this invention, the nozzles and the protrusion structures are respectively arranged in annual arrangements corresponding to each other.

[0011] In one embodiment of this invention, the nozzles are arranged in a rectangular array.

[0012] In one embodiment of this invention, the nozzles are arranged in a rhombic array.

[0013] In one embodiment of this invention, each of the protrusion structures is a cone.

[0014] In one embodiment of this invention, each of the protrusion structures is a hemisphere.

[0015] In one embodiment of this invention, each of the protrusion structures is a polygonal column.

[0016] In one embodiment of this invention, the nozzles and the protrusion structures are respectively arranged in multiple a plurality rows in radial arrangements corresponding to each other.

[0017] In one embodiment of this invention, a flat reflective surface is defined on the spray surface, wherein some of the nozzles are arranged in at least one straight row and inclined toward the flat reflective surface and the protrusion structures are arranged in a plurality of rows corresponding to the flat reflective surface and parallel to the straight row.

[0018] In one embodiment of this invention, a plurality of drainage grooves are provided on the heat dissipation surface.

[0019] In one embodiment of this invention, the drainage grooves are arranged in a radial arrangement.

[0020] In one embodiment of this invention, a collection recess is provided on the heat dissipation surface, the drainage grooves are arranged in the radial arrangement about the collection recess as a center, and the drainage grooves are respectively connected to the collection recess.

[0021] The spray cooling device of this invention has spray lid provided with protrusion structures for extending heat dissipation surface, and it may cooperate with the nozzles defined with specific spray paths allowing the working fluid to quickly flow through the protrusion structures to be vaporization.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a perspective view showing the spray cooling device according to the first embodiment of this invention.

[0023] FIG. 2 is a schematic view showing a nozzle array of the spray cooling device according to the first embodiment of this invention.

[0024] FIG. 3 is a schematic view showing a spray lid of the spray cooling device according to the first embodiment of this invention.

[0025] FIG. 4 is a cross-sectional view of the spray cooling device in operation according to the first embodiment of this invention.

[0026] FIG. 5 is a perspective view showing a spray lid of the spray cooling device according to the second embodiment of this invention.

[0027] FIG. 6 is a cross-sectional view of the spray cooling device in operation according to the second embodiment of this invention.

[0028] FIG. 7 is a perspective view showing a spray lid of the spray cooling device according to the third embodiment of this invention.

[0029] FIG. 8 is a cross-sectional view of the spray cooling device in operation according to the third embodiment of this invention.

[0030] FIG. 9 is a perspective view showing a spray lid of the spray cooling device according to the fourth embodiment of this invention.

[0031] FIG. 10 is a cross-sectional view of the spray cooling device in operation according to the fourth embodiment of this invention.

[0032] FIG. 11 is a perspective view showing a nozzle array of the spray cooling device according to the fifth embodiment of this invention.

[0033] FIG. 12 is a cross-sectional view of the spray cooling device in operation according to the fifth embodiment of this invention.

[0034] FIG. 13 is a cross-sectional view showing the spray cooling device in operation according to the sixth embodiment of this invention.

[0035] FIG. 14 is a cross-sectional view showing the spray cooling device in operation according to the seventh embodiment of this invention.

[0036] FIG. 15 is a cross-sectional view of the spray cooling device in operation according to an eighth embodiment of this invention.

[0037] FIG. 16 is a perspective view showing a nozzle array of the spray cooling device according to the ninth embodiment of this invention.

[0038] FIG. 17 is a cross-sectional view of the spray cooling device in operation according to the ninth embodiment of this invention.

[0039] FIG. 18 is a cross-sectional view showing the spray cooling device in operation according to the tenth embodiment of this invention.

[0040] FIG. 19 is a cross-sectional view of the spray cooling device in operation according to an eleventh embodiment of this invention.

[0041] FIG. 20 is a cross-sectional view showing the spray cooling device in operation according to the twelfth embodiment of this invention.

[0042] FIG. 21 is a perspective view showing a spray lid of the spray cooling device according to the thirteenth embodiment of this invention.

[0043] FIG. 22 is a cross-sectional view of the spray cooling device in operation according to the thirteenth embodiment of this invention.

[0044] FIG. 23 is a perspective view showing a nozzle array of the spray cooling device according to the fourteenth embodiment of this invention.

[0045] FIG. 24 is a perspective view of a spray lid of the spray cooling device according to the fourteenth embodiment of this invention.

[0046] FIG. 25 is a cross-sectional view of the spray cooling device in operation according to the fourteenth embodiment of this invention.

[0047] FIG. 26 is a perspective view showing a nozzle array of the spray cooling device according to the fifteenth embodiment of this invention.

[0048] FIG. 27 is a cross-sectional view of the spray cooling device in operation according to the fifteenth embodiment of this invention.

[0049] FIG. 28 is a perspective view showing a nozzle array of the spray cooling device according to the sixteenth embodiment of this invention.

[0050] FIG. 29 is a cross-sectional view of the spray cooling device in operation according to the sixteenth embodiment of this invention.

[0051] FIG. 30 is a perspective view showing a nozzle array of the spray cooling device according to the seventeenth embodiment of this invention.

[0052] FIG. 31 is a cross-sectional view of the spray cooling device in operation according to the seventeenth embodiment of this invention.DETAILED DESCRIPTION

[0053] The technical contents of this invention will become apparent with the detailed description of embodiments accompanied with the illustration of related drawings as follows. It is intended that the embodiments and drawings disclosed herein are to be considered illustrative rather than restrictive.

[0054] Detailed descriptions and technical contents of this invention is described in the flowing paragraph with reference to the drawings. However, the drawings are attached only for illustration and are not intended to limit this invention.

[0055] FIG. 1 is a perspective view showing the spray cooling device according to the first embodiment of this invention. According to the first embodiment of this invention as shown in FIG. 1, a spray cooling device has at least a nozzle array 100 and a spray lid 200 arranged vertically opposite to each other. The nozzle array 100 is suspended above the spray lid 200. In this embodiment, the spray cooling device further includes a collection tank 300 and a circulation pipeline 400. The spray lid 200 is arranged on the collection tank 300, and the circulation pipeline 400 is connected between the nozzle array 100 and the spray lid 200. Specifically, a pump 410 is further provided on the circulation pipeline 400. The collection tank 300 contains a working fluid therein. The pump 410 pumps the working fluid to the nozzle array 100 through the circulation pipeline 400. The working fluid is sprayed onto the spray lid 200 via the nozzle array 100 and then overflows to the collection tank 300. The nozzle array 100 has a base 110 for supplying the working fluid, and a plurality of nozzles 120 are arranged in an array on the base 110 for spraying the working fluid. The spray lid 200 has a heat dissipation surface 201, and a plurality of protrusion structures 220 are arranged in an array on the heat dissipation surface 201 corresponding to the nozzles 120.

[0056] FIG. 2 is a schematic view showing a nozzle array 100 of the spray cooling device according to the first embodiment of this invention. According to this embodiment as shown in FIG. 2, the base 110 of the nozzle array 100 has a spray surface 101, and the nozzles 120 are arranged on the spray surface 101. The nozzles 120 are arranged in a radial arrangement with concentric rings, and one of the nozzles 120 is disposed at the center. FIG. 3 is a schematic view showing a spray lid of the spray cooling device according to the first embodiment of this invention. According to FIG. 3, each protrusion structure 220 is a cone. A plurality of drainage grooves 211 and a collection recess 212 are provided on the heat dissipation surface 201. The drainage grooves 211 are arranged in a radial arrangement about the collection recess 212 as a center, and the drainage grooves 211 are respectively connected to the collection recess 212. The protrusion structures 220 are arranged in concentric rings about the collection recess 212 as a center.

[0057] FIG. 4 is a cross-sectional view of the spray cooling device in operation according to the first embodiment of this invention. According to FIG. 4, the nozzle array 100 is arranged with its spray surface 101 facing downward, and the spray lid 200 has a heat absorption surface 202 opposite to the heat dissipation surface 201. In this embodiment, the heat dissipation surface 201 of the spray lid 200 faces upward and faces the spray surface 101, and the heat absorption surface 202 of the spray lid 200 faces downward for contacting the heat source 10 to absorb the heat into the spray lid 200 from the heat source and conduct the heat to the heat dissipation surface 201. One of nozzles 120 at center is disposed downward to align to the collection recess 212, and the others of the nozzles 120 are respectively disposed downward to align to the protrusion structures 220 corresponding thereto. Each nozzle 120 is defined with a spray path 121, respectively, and each nozzle 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121. Specifically, each nozzle 120 sprays the working fluid downward and directly onto the corresponding protrusion structure 220 along the spray path 121 thereof. The working fluid sprayed onto the heat dissipation surface 201 may be quickly drained from the heat dissipation surface 201 through the collection recess 212 and the drainage grooves 211, thereby allowing the working fluid to form a thin film on the surface of the cone of each protrusion structure 220 and change phase to dissipate the heat from the spray lid 200.

[0058] FIG. 5 is a perspective view showing a spray lid 200 of the spray cooling device according to the second embodiment of this invention. According to the second embodiment of this invention, a spray lid 200 of a spray cooling device is applied to the spray cooling device according to the first embodiment. According to FIG. 5, this embodiment has a spray lid 200 different from the first embodiment as described below. In this embodiment, each protrusion structure 220 of the spray lid 200 is a cone. A plurality of drainage grooves 211 and a collection recess 212 are provided on the heat dissipation surface 201 of the spray lid 200. The drainage grooves 211 are arranged in a radial arrangement about the collection recess 212 as a center, and the drainage grooves 211 are respectively connected to the collection recess 212. The protrusion structures 220 are arranged in another concentric ring arrangement about the collection recess 212 as a center, which is more compact relative to the aforementioned embodiment.

[0059] FIG. 6 is a cross-sectional view of the spray cooling device in operation according to the second embodiment of this invention. According to FIG. 6, the nozzle array 100 as shown in FIG. 2 is cooperated with the spray lid 200 as shown in FIG. 5. One of nozzles 120 at center is disposed downward to align to the collection recess 212, and the others of the nozzles 120 are respectively disposed downward corresponding to at least one of the protrusion structures 220. Each of the nozzles 120 is defined with a spray path 121, respectively, and each of the nozzles 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121.

[0060] FIG. 7 is a perspective view showing a spray lid 200 of the spray cooling device according to the third embodiment of this invention. The third embodiment of this invention provides a spray lid 200 of a spray cooling device, which is applied the spray cooling device as mentioned in the first embodiment. According to FIG. 7, the spray lid 200 of this embodiment is different form the first embodiment as described below. In this embodiment, each protrusion structure 220 may be a hemisphere. A plurality of drainage grooves 211 and a collection recess 212 are disposed on the heat dissipation surface 201. The drainage grooves 211 are arranged in a radial arrangement about the centered on the collection recess 212 as a center, and the drainage grooves 211 are respectively connected to the collection recess 212. The protrusion structures 220 are arranged in a radial arrangement with concentric rings about the collection recess 212 as a center.

[0061] FIG. 8 is a cross-sectional view of the spray cooling device in operation according to the third embodiment of this invention. According to FIG. 8, the nozzle array 100 as shown in FIG. 2 is cooperated with the spray lid 200 as shown in FIG. 7. One of nozzles 120 at center is disposed downward to align to the collection recess 212, and the others of the nozzles 120 are respectively disposed downward corresponding to at least one of the hemispheres as the protrusion structures 220. Each nozzle 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121. The working fluid sprayed onto the heat dissipation surface 201 may be quickly drained from the heat dissipation surface 201 through the collection recess 212 and the drainage grooves 211, thereby allowing the working fluid to form a thin film on the surface of the hemisphere of each protrusion structure 220 and change phase to dissipate the heat from the spray lid 200.

[0062] FIG. 9 is a perspective view showing a spray lid 200 of the spray cooling device according to the fourth embodiment of this invention. The fourth embodiment of this invention provides a spray lid 200 of a spray cooling device, which is applied the spray cooling device as mentioned in the first embodiment. According to FIG. 9, this embodiment has a spray lid 200 different from the first embodiment as described below. In this embodiment, each protrusion structure 220 is a cone. A plurality of drainage grooves 211 and a collection recess 212 are disposed on the heat dissipation surface 201. The drainage grooves 211 are arranged in a radial arrangement about the centered on the collection recess 212 as a center, and the drainage grooves 211 are respectively connected to the collection recess 212. The protrusion structures 220 are arranged in a radial arrangement with concentric rings about the collection recess 212 as a center.

[0063] FIG. 10 is a cross-sectional view of the spray cooling device in operation according to the fourth embodiment of this invention. According to FIG. 10, the nozzle array 100 as shown in FIG. 2 is cooperated with the spray lid 200 as shown in FIG. 9. One of nozzles 120 at center is disposed downward to align to the collection recess 212, and the others of the nozzles 120 are respectively disposed downward corresponding to at least one of the cones as the protrusion structures 220. Each nozzle 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121. The working fluid sprayed onto the heat dissipation surface 201 may be quickly drained from the heat dissipation surface 201 through the collection recess 212 and the drainage grooves 211, thereby allowing the working fluid to form a thin film on the surface of the cone of each protrusion structure 220 and change phase to dissipate the heat from the spray lid 200.

[0064] FIG. 11 is a perspective view showing a nozzle array of the spray cooling device according to the fifth embodiment of this invention. The fifth embodiment of this invention provides a nozzle array 100 of a spray cooling device, which is applied the spray cooling device as mentioned in the first embodiment. According to FIG. 11, this embodiment has a nozzle array 100 different from the first embodiment as described below. According to this embodiment, the base 110 of the nozzle array 100 has a spray surface 101, and the nozzles 120 are arranged on the spray surface 101. The nozzles 120 are arranged in a radial arrangement with concentric rings without one of the nozzles 120 disposed at the center.

[0065] FIG. 12 is a cross-sectional view of the spray cooling device in operation according to the fifth embodiment of this invention. According to FIG. 12, the nozzle array 100 as shown in FIG. 11 is cooperated with the spray lid 200 as shown in FIG. 3. This spray lid 200 has a plurality of cones as the protrusion structures 220 arranged in a radial arrangement. The nozzles 120 are disposed downward and respectively aligned with the protrusion structures 220 corresponding thereto. Each nozzle 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121. The working fluid sprayed onto the heat dissipation surface 201 may be quickly drained from the heat dissipation surface 201 through the collection recess 212 and the drainage grooves 211, thereby allowing the working fluid to form a thin film on the surface of the cone of each protrusion structure 220 and change phase to dissipate the heat from the spray lid 200.

[0066] FIG. 13 is a cross-sectional view showing the spray cooling device in operation according to the sixth embodiment of this invention. According to FIG. 13, the nozzle array 100 as shown in FIG. 11 is cooperated with the spray lid 200 as shown in FIG. 5. This spray lid 200 has a plurality of cones as the protrusion structures 220 arranged more compactly in an annular arrangement. The nozzles 120 are disposed downward and respectively aligned with the protrusion structures 220 corresponding thereto. Each nozzle 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121. The working fluid sprayed onto the heat dissipation surface 201 may be quickly drained from the heat dissipation surface 201 through the collection recess 212 and the drainage grooves 211, thereby allowing the working fluid to form a thin film on the surface of the cone of each protrusion structure 220 and change phase to dissipate the heat from the spray lid 200.

[0067] FIG. 14 is a cross-sectional view showing the spray cooling device in operation according to the seventh embodiment of this invention. According to FIG. 14, the nozzle array 100 as shown in FIG. 11 is cooperated with the spray lid 200 as shown in FIG. 7. This spray lid 200 has a plurality of hemispheres as the protrusion structures 220 arranged in a radial arrangement. The nozzles 120 are disposed downward and respectively aligned with the protrusion structures 220 corresponding thereto. Each nozzle 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121. The working fluid sprayed onto the heat dissipation surface 201 may be quickly drained from the heat dissipation surface 201 through the collection recess 212 and the drainage grooves 211, thereby allowing the working fluid to form a thin film on the surface of the hemisphere of each protrusion structure 220 and change phase to dissipate the heat from the spray lid 200.

[0068] FIG. 15 is a cross-sectional view of the spray cooling device in operation according to an eighth embodiment of this invention. According to FIG. 15, the nozzle array 100 as shown in FIG. 11 is cooperated with the spray lid 200 as shown in FIG. 9. This spray lid 200 has a plurality of cones as the protrusion structures 220 arranged in a radial arrangement. The nozzles 120 are disposed downward and respectively aligned with the protrusion structures 220 corresponding thereto. Each nozzle 120 sprays the working fluid onto the corresponding protrusion structure 220 along the spray path 121. The working fluid sprayed onto the heat dissipation surface 201 may be quickly drained from the heat dissipation surface 201 through the collection recess 212 and the drainage grooves 211, thereby allowing the working fluid to form a thin film on the surface of the cone of each protrusion structure 220 and change phase to dissipate the heat from the spray lid 200.

[0069] FIG. 16 is a perspective view showing a nozzle array 100 of the spray cooling device according to the ninth embodiment of this invention. The ninth embodiment of this invention provides a nozzle array 100 of a spray cooling device, which is applied the spray cooling device as mentioned in the first embodiment. According to FIG. 16, this embodiment has a nozzle array 100 different from the first embodiment as described below. According to this embodiment, the base 110 of the nozzle array 100 has a spray surface 101, and the nozzles 120 are arranged on the spray surface 101. The curved reflective surface 111 shown in this embodiment is a concaved spherical surface. The nozzles 120 are arranged surrounding the curved reflective surface 111 and facing the curved reflective surface 111, respectively.

[0070] FIG. 17 is a cross-sectional view of the spray cooling device in operation according to the ninth embodiment of this invention. According to FIG. 17, this nozzle array 100 may be used corresponding to a spray lid 200 having protrusion structures 220 in a radial arrangement or an annular arrangement. In this embodiment, the nozzle array 100 as shown in FIG. 16 is cooperated with the spray lid 200 as shown in FIG. 3. This spray lid 200 has a plurality of cones as the protrusion structures 220 arranged in an arrangement with concentric rings. According to FIG. 17, a center of the radial arrangement of protrusion structures 220 is aligned to a center of the curved reflective surface 111. The nozzles 120 surrounding the curved reflective surface 111 spray the working fluid onto the curved reflective surfaces 111, respectively, and then reflected to the heat dissipation surface 201. The spray paths 121 of the working fluid from the nozzles 120 are combined into a cone shape after passing the curved surface, and the cone shape is defined with an area covering the protrusion structures 220.

[0071] FIG. 18 is a cross-sectional view showing the spray cooling device in operation according to the tenth embodiment of this invention. According to FIG. 18, the nozzle array 100 as shown in FIG. 16 is cooperated with the spray lid 200 as shown in FIG. 5. This spray lid 200 has a plurality of cones as the protrusion structures 220 arranged more compactly in an arrangement with concentric rings. A center of the radial arrangement of protrusion structures 220 is aligned to a center of the curved reflective surface 111. The nozzles 120 surrounding the curved reflective surface 111 spray the working fluid onto the curved reflective surfaces 111, respectively, and then reflected to the heat dissipation surface 201. The spray paths 121 of the working fluid from the nozzles 120 are combined into a cone shape after passing the curved surface, and the cone shape is defined with an area covering the protrusion structures 220.

[0072] FIG. 19 is a cross-sectional view of the spray cooling device in operation according to an eleventh embodiment of this invention. According to FIG. 19, the nozzle array 100 as shown in FIG. 16 is cooperated with the spray lid 200 as shown in FIG. 7. This spray lid 200 has a plurality of hemispheres as the protrusion structures 220 arranged in a radial arrangement. A center of the radial arrangement of protrusion structures 220 is aligned to a center of the curved reflective surface 111. The nozzles 120 surrounding the curved reflective surface 111 spray the working fluid onto the curved reflective surfaces 111, respectively, and then reflected to the heat dissipation surface 201. The spray paths 121 of the working fluid from the nozzles 120 are combined into a cone shape after passing the curved surface, and the cone shape is defined with an area covering the protrusion structures 220.

[0073] FIG. 20 is a cross-sectional view showing the spray cooling device in operation according to the twelfth embodiment of this invention. According to FIG. 20, the nozzle array 100 as shown in FIG. 16 is cooperated with the spray lid 200 as shown in FIG. 9. This spray lid 200 has a plurality of cones as the protrusion structures 220 arranged in a radial arrangement. A center of the radial arrangement of protrusion structures 220 is aligned to a center of the curved reflective surface 111. The nozzles 120 surrounding the curved reflective surface 111 spray the working fluid onto the curved reflective surfaces 111, respectively, and then reflected to the heat dissipation surface 201. The spray paths 121 of the working fluid from the nozzles 120 are combined into a cone shape after passing the curved surface, and the cone shape is defined with an area covering the protrusion structures 220.

[0074] FIG. 21 is a perspective view showing a spray lid 200 of the spray cooling device according to the thirteenth embodiment of this invention. The thirteenth embodiment of this invention provides a spray lid 200 of a spray cooling device, which is applied the spray cooling device as mentioned in the ninth embodiment. According to FIG. 21, this embodiment has a spray lid 200 different from the ninth embodiment as described below. The spray lid 200 as shown in this embodiment has protrusion structures 220 arranged in a radial arrangement, and each of the protrusion structures 220 is a polygonal column. At least one overflow slope 213 is provided on the heat dissipation surface 201 of the spray lid 200. The overflow slope 213 has a lower end disposed at the edge of the heat dissipation surface 201, thereby accelerating drainage of the working fluid sprayed onto the heat dissipation surface 201 to avoid accumulation which may obstacle phase change.

[0075] FIG. 22 is a cross-sectional view of the spray cooling device in operation according to the thirteenth embodiment of this invention. According to FIG. 22, the nozzle array 100 as shown in FIG. 16 is cooperated with the spray lid 200 as shown in FIG. 21. A center of the radial arrangement of protrusion structures 220 is aligned to a center of the curved reflective surface 111. The nozzles 120 surrounding the curved reflective surface 111 spray the working fluid onto the curved reflective surfaces 111, respectively, and then reflected to the heat dissipation surface 201. The spray paths 121 of the working fluid from the nozzles 120 are combined into a cone shape after passing the curved surface, and the cone shape is defined with an area covering the protrusion structures 220.

[0076] FIG. 23 is a perspective view showing a nozzle array 100 of the spray cooling device according to the fourteenth embodiment of this invention. The fourteenth embodiment of this invention provides a nozzle array 100 of a spray cooling device, which is applied the spray cooling device as mentioned in the first embodiment. According to FIG. 23, this embodiment has a nozzle array 100 different from the first embodiment as described below. According to this embodiment, the base 110 of the nozzle array 100 has a spray surface 101, and the nozzles 120 are arranged on the spray surface 101. A curved reflective surface 111 is disposed on the spray surface 101. The curved reflective surface 111 shown in this embodiment is a concaved spherical surface. The nozzles 120 are arranged in two straight rows, and the two straight rows are disposed on two opposite sides of the curved reflective surface 111. The nozzles 120 are arranged surrounding the curved reflective surface 111 and facing the curved reflective surface 111, respectively.

[0077] FIG. 24 is a perspective view of a spray lid 200 of the spray cooling device according to the fourteenth embodiment of this invention. The fourteenth embodiment of this invention provides a spray lid 200 of a spray cooling device, which is applied the spray cooling device as mentioned in the first embodiment. According to FIG. 24, this embodiment has a spray lid 200 different from the first embodiment as described below. The spray lid 200 as shown in this embodiment has protrusion structures 220 arranged in a radial arrangement, and each of the protrusion structures 220 is a rectangular polygonal column. The protrusion structures 220 are arranged parallel to each other and spaced from each other. At least one overflow slope 213 is provided on the heat dissipation surface 201 of the spray lid 200. The overflow slope 213 has a lower end disposed at the edge of the heat dissipation surface 201, thereby accelerating drainage of the working fluid sprayed onto the heat dissipation surface 201 to avoid accumulation which may obstacle phase change.

[0078] FIG. 25 is a cross-sectional view of the spray cooling device in operation according to the fourteenth embodiment of this invention. According to FIG. 25, the nozzle array 100 as shown in FIG. 23 is cooperated with the spray lid 200 as shown in FIG. 24. According to FIG. 25, the nozzles 120 arranged in two rows opposite to each other spray the working fluid onto the curved reflective surface 111, respectively, and then reflected to the heat dissipation surface 201. The spray paths 121 of the working fluid from the nozzles 120 are combined into a pair of planes after passing the curved surface, so that the working fluid may be sprayed into the gaps between the protrusion structures 220 to dip on two side surfaces of the protrusion structures 220.

[0079] FIG. 26 is a perspective view showing a nozzle array 100 of the spray cooling device according to the fifteenth embodiment of this invention. The fifteenth embodiment of this invention provides a nozzle array 100 of a spray cooling device, which is applied the spray cooling device as mentioned in the fourteenth embodiment. According to FIG. 26, this embodiment has a nozzle array 100 different from the fourteenth embodiment as described below. According to this embodiment, the base 110 of the nozzle array 100 has a spray surface 101, and the nozzles 120 are arranged on the spray surface 101. The spray surface 101 is provided with flat reflective surfaces 112 thereon. According to this embodiment, a pair of flat reflective surfaces 112 are arranged back-to-back and inclined. The flat reflective surface 112 is defined with a normal direction disposed away from the heat dissipation surface 201 and deviated from the heat dissipation surface 201. The nozzles 120 are arranged in two straight rows, and the two straight rows are disposed toward the curved reflective surfaces 111, respectively. According to FIG. 27, the nozzle array 100 as shown in FIG. 26 is cooperated with the spray lid 200 as shown in FIG. 24.

[0080] FIG. 27 is a cross-sectional view of the spray cooling device in operation according to the fifteenth embodiment of this invention. According to FIG. 27, the nozzle array 100 as shown in FIG. 26 is cooperated with the spray lid 200 as shown in FIG. 24. According to FIG. 27, the nozzles 120 arranged in two rows opposite to each other spray the working fluid onto the flat reflective surfaces 112, respectively, and then reflected to the heat dissipation surface 201. The spray paths 121 of the working fluid from the nozzles 120 are combined into a pair of planes after passing the curved surface, so that the working fluid may be sprayed into the gaps between the protrusion structures 220 to dip on two side surfaces of the protrusion structures 220.

[0081] FIG. 28 is a perspective view showing a nozzle array 100 of the spray cooling device according to the sixteenth embodiment of this invention. The sixteenth embodiment of this invention provides a spray lid 200 of a spray cooling device, which is applied the spray cooling device as mentioned in the fourteenth embodiment. According to FIG. 28, this embodiment has a nozzle array 100 different from the fourteenth embodiment as described below. According to this embodiment, the base 110 of the nozzle array 100 has a spray surface 101, and the nozzles 120 are arranged on the spray surface 101. The nozzles 120 are arranged in a rectangular array.

[0082] FIG. 29 is a cross-sectional view of the spray cooling device in operation according to the sixteenth embodiment of this invention. According to FIG. 29, the nozzle array 100 as shown in FIG. 28 is cooperated with the spray lid 200 as shown in FIG. 24. According to FIG. 29, the spray paths 121 of the working fluid from the nozzles 120 are arranged in a rectangular array, so that the working fluid may be sprayed into the gaps between the protrusion structures 220 to dip on two side surfaces of the protrusion structures 220.

[0083] FIG. 30 is a perspective view showing a nozzle array 100 of the spray cooling device according to the seventeenth embodiment of this invention. The seventeenth embodiment of this invention provides a nozzle array 100 of a spray cooling device, which is applied the spray cooling device as mentioned in the thirteenth embodiment. According to FIG. 30, the nozzles 120 are arranged in a rhombic array.

[0084] FIG. 31 is a cross-sectional view of the spray cooling device in operation according to the seventeenth embodiment of this invention. According to FIG. 31, the nozzle array 100 as shown in FIG. 30 is cooperated with the spray lid 200 as shown in FIG. 21. The spray lid 200 as shown in this embodiment has protrusion structures 220 arranged in a radial arrangement, and each of the protrusion structures 220 is a polygonal column. According to FIG. 31, the spray paths 121 of the working fluid from the nozzles 120 are arranged in a rhombic array, so that the working fluid may be sprayed into the gaps between the protrusion structures 220 to dip on two side surfaces of the protrusion structures 220.

[0085] This invention provides nozzles 120 which are defined with spray paths 121 connected with the protrusion structures 220 correspondingly, so that the working fluid may quickly flow through the protrusion structures 220 to be vaporization.

[0086] While this invention has been described by means of specific embodiments, numerous modifications and variations may be made thereto by those skilled in the art without departing from the scope and spirit of this invention set forth in the claims.

Claims

1. A spray cooling device for spraying a working fluid, the spray cooling device comprising:a nozzle array, comprising a base for supplying the working fluid, the base comprising a spray surface, and a plurality of nozzles disposed in an array and arranged on the spray surface for spraying the working fluid; anda spray lid, comprising a heat dissipation surface and a heat absorption surface opposite to the heat dissipation surface, the heat dissipation surface facing the spray surface, and a plurality of protrusion structures disposed in an array and arranged on the heat dissipation surface corresponding to the nozzles,wherein each of the nozzles is defined with a spray path, and each of the nozzles sprays the working fluid to the corresponding protrusion structure along the spray path.

2. The spray cooling device according to claim 1, wherein a curved reflective surface is disposed on the spray surface, the curved reflective surface is surrounded by the nozzles, and the protrusion structures are arranged radially about a center of the curved reflective surface.

3. The spray cooling device according to claim 1, wherein a curved reflective surface is defined on the spray surface, the nozzles are arranged in two straight rows, and the two straight rows are disposed opposite to each other on two sides of the curved reflective surface.

4. The spray cooling device according to claim 1, wherein the nozzles and the protrusion structures are respectively arranged in radial arrangements corresponding to each other.

5. The spray cooling device according to claim 1, wherein the nozzles and the protrusion structures are respectively arranged in annual arrangements corresponding to each other.

6. The spray cooling device according to claim 1, wherein the nozzles are arranged in a rectangular array.

7. The spray cooling device according to claim 1, wherein the nozzles are arranged in a rhombic array.

8. The spray cooling device according to claim 1, wherein each of the protrusion structures is a cone.

9. The spray cooling device according to claim 1, wherein each of the protrusion structures is a hemisphere.

10. The spray cooling device according to claim 1, wherein each of the protrusion structures is a polygonal column.

11. The spray cooling device according to claim 1, wherein the nozzles and the protrusion structures are respectively arranged in multiple a plurality rows in radial arrangements corresponding to each other.

12. The spray cooling device according to claim 1, wherein a flat reflective surface is defined on the spray surface, wherein some of the nozzles are arranged in at least one straight row and inclined toward the flat reflective surface and, and the protrusion structures are arranged in a plurality of rows corresponding to the flat reflective surface and parallel to the straight row.

13. The spray cooling device according to claim 1, wherein a plurality of drainage grooves are provided on the heat dissipation surface.

14. The spray cooling device according to claim 13, wherein the drainage grooves are arranged in a radial arrangement.

15. The spray cooling device according to claim 13, wherein a collection recess is provided on the heat dissipation surface, the drainage grooves are arranged in the radial arrangement about the collection recess as a center, and the drainage grooves are respectively connected to the collection recess.

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