WO2023286206A1 - Enceinte - Google Patents

Enceinte Download PDF

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Publication number
WO2023286206A1
WO2023286206A1 PCT/JP2021/026471 JP2021026471W WO2023286206A1 WO 2023286206 A1 WO2023286206 A1 WO 2023286206A1 JP 2021026471 W JP2021026471 W JP 2021026471W WO 2023286206 A1 WO2023286206 A1 WO 2023286206A1
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WO
WIPO (PCT)
Prior art keywords
lattice structure
housing
rod
voronoi
delaunay
Prior art date
Application number
PCT/JP2021/026471
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English (en)
Japanese (ja)
Inventor
健寛 右原
尚久 高橋
洋敬 栗田
洋之 永本
佳祐 栗本
孝幸 小林
Original Assignee
ヤマハ発動機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by ヤマハ発動機株式会社 filed Critical ヤマハ発動機株式会社
Priority to PCT/JP2021/026471 priority Critical patent/WO2023286206A1/fr
Priority to PCT/JP2022/026289 priority patent/WO2023286631A1/fr
Priority to TW111126226A priority patent/TW202309470A/zh
Publication of WO2023286206A1 publication Critical patent/WO2023286206A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the present invention relates to a housing, particularly a housing that houses contents including a heat source.
  • the housing that houses the content including the heat source has a housing wall that forms a housing space that houses the content including the heat source.
  • an elongated coolant passage may be formed between the outer surface and the inner surface of the housing wall.
  • the heat generated by the heat source is radiated to the outside through the refrigerant flowing through the refrigerant passage.
  • An elongated refrigerant passage is a refrigerant passage formed so that the maximum width of the refrigerant passage in a cross section across the refrigerant flow direction is shorter than the length of the refrigerant passage in the refrigerant flow direction.
  • a housing that houses a motor (heat source) has a housing wall portion in which an elongated refrigerant passage is formed.
  • the housing wall portion of Patent Documents 1 and 2 includes an inner cylinder and an outer cylinder that hold the stator of the motor.
  • a coolant passage is formed between the inner cylinder and the outer cylinder.
  • the refrigerant passage is devised to improve the cooling efficiency. Specifically, in Patent Documents 1 and 2, a plurality of narrowed portions (concave portions) are provided so that the cross-sectional area of the refrigerant passage is partially reduced.
  • a plurality of fins connected to at least the inner cylinder are provided inside the refrigerant passage of Patent Document 1.
  • the refrigerant passage of Patent Document 2 is provided with a plurality of cylinders that connect the inner cylinder and the outer cylinder.
  • Patent Literature 1 the efficiency of heat exchange is improved by generating turbulence in the refrigerant flow by the restrictor and bringing the turbulent coolant flow into contact with fins provided downstream of the restrictor.
  • Patent Literature 2 the efficiency of heat exchange is improved by generating turbulence in the refrigerant flow by means of the throttle portion and the cylinder to eliminate the stagnation of the refrigerant.
  • cooling structure of the housing there are cases where a plurality of heat radiation fins are provided on the surface of the housing wall portion, as in Patent Document 3, for example.
  • the heat generated by the heat source is radiated to the outside of the housing through the radiation fins.
  • JP-A-08-19218 JP 2010-041835 A Japanese Patent Application Laid-Open No. 2021-072758
  • the housing that contains the contents, including the heat source is required to improve cooling performance while suppressing the increase in size.
  • a housing that accommodates contents including a heat source is required to increase the degree of freedom in designing the shape of the housing while ensuring the cooling performance of the housing.
  • the present invention can improve the cooling performance of the housing while suppressing an increase in the size of the housing, or can improve the degree of freedom in designing the shape of the housing while ensuring the cooling performance of the housing. , is intended to provide a housing.
  • a housing that houses contents including a heat source has a problem that the shape of the outer surface and inner surface of the housing is restricted for the following two reasons.
  • the first reason is that it is necessary to consider the shape of the contents and the interference with surrounding parts when mounting the housing.
  • the second reason is that it is necessary to secure the rigidity and strength necessary to support the contents and the housing itself.
  • the housing has a cooling structure, the following problems still exist. For a case that is restricted by the shape of the outer and inner surfaces of the case, it is necessary to improve the cooling performance while suppressing an increase in the size of the case, or to improve the design freedom of the case shape while ensuring the cooling performance. is required.
  • the rigidity and strength of the housing are increased by the lattice structure, and the rigidity and strength of the housing are improved. bias can be further suppressed. Therefore, even if the lattice structure is provided on either side, the cooling performance of the housing can be further improved while suppressing an increase in the size of the housing, or the housing can be designed freely in shape while ensuring the cooling performance of the housing. degree can be improved.
  • the housing of the present invention is applied to a device comprising a housing for housing contents including a heat source and the contents.
  • the type of device is not particularly limited. At least a portion of the outer surface of the device consists of at least a portion of the outer surface of the housing.
  • the lattice structure When the lattice structure is formed so as to be continuous with the outer surface or the inner surface of the housing wall, the lattice structure has an edge in a direction orthogonal to the outer surface or the inner surface of the housing wall on which the lattice structure is provided. Fluid can enter and exit from the The fluid may be air, for example.
  • the rod-shaped portion that constitutes the lattice structure may be linear. In the present specification, "each rod-shaped portion" means each of all the rod-shaped portions of the lattice structure.
  • the housing of the present invention may have multiple lattice structures. A plurality of lattice structures may be provided in one coolant passage.
  • the Delaunay lattice structure consists of a plurality of first rods forming a plurality of Delaunay sides.
  • a plurality of first rod-shaped portions forming a plurality of Delaunay sides means that each of the plurality of first rod-shaped portions forms at least part of a Delaunay side. At least one end of each first rod-shaped portion is connected to another first rod-shaped portion at the Delaunay point.
  • the Voronoi lattice structure consists of a plurality of first rod-shaped portions forming sides of a plurality of Voronoi polyhedra formed only by Voronoi interfaces.
  • a Voronoi boundary surface surrounded by a plurality of first rod-shaped portions means that a plurality of sides forming one Voronoi boundary surface are all formed of the first rod-shaped portions.
  • the two generating points positioned on both sides of the Voronoi boundary surface are two generating points such that the perpendicular bisector of the line segment connecting the two generating points is the Voronoi boundary surface. means a point.
  • the fact that the length of the lattice structure in the coolant flow direction is longer than the maximum width or the circumferential length of the coolant passage in the cross section passing through the lattice structure means that the lattice structure is It means that the maximum length of the lattice structure in the coolant flow direction is longer than the maximum width or circumference of the coolant passage in the cross section passing through.
  • the term "lattice structure" means that a plurality of unit cells are connected so that the length of the lattice structure in the coolant flow direction is longer than the maximum width or circumferential length of the coolant passage in the cross section passing through the lattice structure.
  • the lattice structure of the present invention is arranged between one part of the housing wall and another part of the housing wall in the direction of two mutually orthogonal line segments included in the first cross section that traverses the coolant flow direction. may be formed so as to be connected at the lattice structure.
  • the direction of the line segment included in the first cross section is not only parallel to the line segment included in the first cross section, but also the direction coaxial with this line segment.
  • the direction of a line segment included in the first cross-section is a linear direction included in the first cross-section without crossing the first cross-section.
  • the definition of the first cross section across the refrigerant flow direction is the same as the definition of the cross section described above.
  • At least a portion of the refrigerant passage in the refrigerant flow direction is provided with a first passage portion provided with at least a portion of the lattice structure portion, and a lattice structure portion aligned in a direction intersecting the first passage portion with the refrigerant flow direction. and a second passage portion that is not closed.
  • the second passage portion and the first passage portion may be arranged in a direction orthogonal to the coolant flow direction. If the coolant passage has a first passage portion and a second passage portion, coolant is movable from the lattice structure to the second passage portion of the coolant passage and from the second passage portion of the coolant passage to the lattice structure. is.
  • a line segment included in the first passage portion is a line segment that exists wholly in the first passage portion.
  • each of two mutually orthogonal line segments included in the second cross section crossing the flow direction change part is formed by connecting points between the first rod-shaped parts. It may be formed through more than one Delaunay pyramid.
  • two line segments orthogonal to each other included in the second cross section crossing the flow direction changing part are each formed by connecting points between the first rod-shaped parts at all vertexes. It may be formed through one or more Voronoi polyhedra.
  • the definition of the flow direction change section is as described above.
  • the definition of the second cross-section is the same as the definition of the cross-section described above.
  • the Voronoi lattice structure has two or more Voronoi polyhedrons in which two mutually orthogonal line segments included in each of the plurality of second cross-sections each have vertices formed by connecting points between the first rod-shaped portions. may be formed to pass through.
  • the definition of the third cross-section is the same as the definition of the cross-section described above.
  • Two mutually orthogonal line segments included in the third cross section passing through two or more Delaunay triangular pyramids or Voronoi polyhedrons means that two mutually orthogonal line segments included in one third cross section are , means passing through two or more Delaunay pyramids or Voronoi polyhedra.
  • the Delaunay lattice structure is two or more Delaunay triangles in which two mutually orthogonal line segments included in each of the plurality of third cross sections are each formed by connecting points between the first rod-shaped portions. It may be formed to pass through an awl.
  • At least one (one) of a plurality of options includes all conceivable combinations of the plurality of options.
  • At least one (one) of the multiple options may be any one of the multiple options, or may be all of the multiple options.
  • at least one of A, B and C may be A only, B only, C only, A and B, A and C There may be, it may be B and C, or it may be A, B and C.
  • a and/or B means that it can be A, it can be B, and it can be both A and B.
  • the housing of the present invention it is possible to improve the cooling performance of the housing while suppressing an increase in the size of the housing, or to improve the degree of freedom in designing the shape of the housing while ensuring the cooling performance of the housing. can be made
  • FIG. 1(a) to 1(g) are diagrams for explaining the housing of the first embodiment of the present invention.
  • FIG. 2 is a two-dimensional Delaunay diagram and also a two-dimensional Voronoi diagram.
  • 3(a) to 3(c) are diagrams schematically showing a part of the lattice structure part of the housing of the second embodiment of the present invention.
  • 4(a) to 4(e) are diagrams schematically showing a portion of the lattice structure of the housing of the third embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of part of the housing of the fifth embodiment of the present invention.
  • 6(a) and 6(c) are cross-sectional views of a portion of the housing of the sixth embodiment of the present invention.
  • FIG. 6(b) is a cross-sectional view taken along line AA in FIG. 6(a)
  • FIG. 6(d) is a cross-sectional view taken along line AA in FIG. 6(c).
  • FIG. 7(a) is a cross-sectional view of a portion of a housing according to a seventh embodiment of the present invention
  • FIG. 7(b) is a cross-sectional view taken along line BB of FIG. 7(a)
  • FIG. 7(c) is a cross-sectional view of a portion of the housing of the eighth embodiment of the present invention
  • FIG. 7(d) is a cross-sectional view taken along line CC of FIG. 7(c).
  • FIGS. 8(a) to 8(c) are sectional views of a housing according to a ninth embodiment of the present invention.
  • 9(a) is a perspective view of a part of the housing of FIGS. 8(a) to 8(c)
  • FIG. 9(b) is a housing of FIGS. 8(a) to 8(c).
  • 8(a) to 8(c) as viewed in the vertical direction of the paper surface.
  • 10A is a cross-sectional view of the housing of Modification 1 of the ninth embodiment
  • FIG. 10B is a cross-sectional view of the housing of Modification 2 of the ninth embodiment
  • FIG. (c) is a cross-sectional view of a housing of Modification 3 of the ninth embodiment.
  • FIG. 11(a) is a cross-sectional view of a housing according to a tenth embodiment of the present invention
  • FIG. 11(b) is a cross-sectional view taken along line DD of FIG. 11(a)
  • FIG. 11(c) is a cross-sectional view taken along line EE of FIG. 11(a).
  • FIG. 12(a) is a cross-sectional view of the housing of the eleventh embodiment of the present invention
  • FIG. 12(b) is a perspective view of the housing of the eleventh embodiment of the present invention.
  • a housing 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1(a) to 1(g).
  • 1(a) to 1(c) show three examples of the housing 1 of the first embodiment.
  • a housing 1 houses contents 2 including a heat source 3 .
  • 1(a) to 1(c) show cross sections of the housing 1 and the contents 2.
  • FIG. The housing 1 and the contents 2 are not limited to those shown in FIGS. 1(a) to 1(c).
  • the housing 1 has a housing wall portion 5 forming a housing space 4 for housing a content 2 including a heat source 3 .
  • the housing 1 has a cooling structure in which heat generated by the heat source 3 is radiated to the outside of the housing 1 .
  • the cooling structure is formed to be continuous with the outer surface 6 or the inner surface 7 of the housing wall 5, or is not continuous with either the outer surface 6 or the inner surface 7 of the housing wall 5, and the coolant It includes a lattice structure portion 20 formed so as to be continuous with the housing wall portion 5 forming the coolant passage 10 through which the refrigerant flows.
  • a coolant passage 10 is formed between an outer surface 6 and an inner surface 7 of the housing wall portion 5 .
  • the refrigerant passage 10 is formed such that the maximum width of the refrigerant passage 10 in a cross section crossing the refrigerant flow direction F is shorter than the length L of the refrigerant passage 10 in the refrigerant flow direction F.
  • the coolant flow direction F is straight from one end to the other end of the coolant passage 10 .
  • the refrigerant passage 10 is not limited to such a shape.
  • the lattice structure 20 includes a Delaunay lattice structure 30 or a Voronoi lattice structure 40 .
  • FIG. 1(d) shows a portion of an example of the Delaunay lattice structure 30, and FIG. 1(e) shows a portion of an example of the Voronoi lattice structure 40.
  • FIG. The Delaunay lattice structure 30 and the Voronoi lattice structure 40 are not limited to those shown in FIGS. 1(d) and 1(e).
  • the lattice structure portion 20 is composed of a plurality of rod-shaped portions 21 .
  • the Delaunay lattice structure 30 consists of a plurality of first rod-shaped parts 22 .
  • the plurality of first rod-shaped portions 22 forming the Delaunay lattice structure 30 form a plurality of Delaunay sides 32 in a three-dimensional Delaunay diagram based on a plurality of Delaunay points 31 randomly distributed in three dimensions.
  • FIG. 1(d) shows a part of the Delaunay lattice structure 30 existing in the rectangular parallelepiped space T1.
  • FIG. 1(f) shows all the Delaunay points 31 existing in the same space T1 as in FIG. .
  • the Delaunay triangular pyramid 33 is a triangular pyramid formed by six Delaunay sides 32 .
  • the Voronoi lattice structure part 40 consists of a plurality of first rod-shaped parts 22 .
  • the plurality of first rod-shaped portions 22 constituting the Voronoi lattice structure portion 40 are formed only by the Voronoi boundary surfaces 42 in a three-dimensional Voronoi diagram with a plurality of virtual points 41 randomly distributed in three dimensions as generating points. form the edges of the Voronoi polyhedron 43 of .
  • FIG. 1(e) shows a portion of the Voronoi lattice structure 40 existing in the rectangular parallelepiped space T2.
  • FIG. 1(g) shows all generating points 41 existing in the same space T2 as in FIG.
  • the length of the lattice structure 20 in the coolant flow direction F may be longer than the maximum width of the coolant passage 10 in the cross section passing through the lattice structure 20. .
  • the length of the lattice structure portion 20 in the coolant flow direction F may be less than or equal to the maximum width of the coolant passage 10 in the cross section passing through the lattice structure portion 20 .
  • the length of the lattice structure portion 20 in the coolant flow direction F may be longer than the circumferential length of the coolant passage 10 in the cross section passing through the lattice structure portion 20 .
  • the length of the lattice structure portion 20 in the coolant flow direction F may be less than or equal to the circumferential length of the coolant passage 10 in the cross section passing through the lattice structure portion 20 .
  • the plurality of Voronoi polyhedrons are a Voronoi polyhedron 43 surrounded only by perpendicular bisectors of lines connecting two generating points 41, and a perpendicular bisector of lines connecting two generating points 41 and a three-dimensional space. and a Voronoi polyhedron bounded by the end faces of .
  • the Voronoi boundary surface 42 is a perpendicular bisector of a line segment connecting two generating points 41 .
  • a Delaunay edge DE in the two-dimensional Delaunay diagram DD is a line segment connecting two generating points P in two Voronoi regions VR adjacent to each other via one Voronoi region VR.
  • a Delaunay edge 32 in the three-dimensional Delaunay diagram of the first embodiment is a line connecting two generating points in two Voronoi polyhedrons adjacent to each other via one Voronoi boundary surface in a Voronoi diagram dual to the Delaunay diagram. minutes.
  • FIGS. 3(a)-3(c) are merely examples of the second embodiment.
  • 3(a) to 3(c) each schematically show a portion of the Delaunay lattice structure 30.
  • FIG. Illustration of the Voronoi lattice structure 40 of the second embodiment is omitted. In the Delaunay lattice structure 30 or the Voronoi lattice structure 40 , some of the first rods 22 are continuous with the housing wall 5 .
  • the end of the first rod-shaped portion 22 forming part of the Delaunay side 32 or part of the side of the Voronoi polyhedron 43 may be continuous with the housing wall 5 (see FIG. 3A, for example). Also, the connection point between the first rod-shaped portions 22 may be continuous with the housing wall portion 5 (see, for example, FIGS. 3(b) and 3(c)). Also, the first rod-shaped portion 22 may be continuous with the housing wall portion 5 along the longitudinal direction of the first rod-shaped portion 22 (see, for example, FIG. 3(c)).
  • FIGS. 4(a)-4(e) are merely examples of the third embodiment.
  • 4(a) and 4(b) each schematically show a portion of the lattice structure 20 including the Delaunay lattice structure 30.
  • FIG. 4(c) to 4(e) each schematically show a portion of the lattice structure 20 including the Voronoi lattice structure 40.
  • the plurality of rod-shaped portions 21 forming the lattice structure portion 20 includes a plurality of second rod-shaped portions 23 in addition to the plurality of first rod-shaped portions 22 forming the Delaunay lattice structure portion 30 or the Voronoi lattice structure portion 40 .
  • At least one second rod-shaped portion 23 is provided between the end of the first rod-shaped portion 22 forming one Delaunay point 31 or one vertex of the Voronoi polyhedron 43 and the housing wall portion 5 . are arranged so that they are connected with each other.
  • the second rod-shaped portion 23 is the rod-shaped portion 21 that originally forms the Delaunay side 32 or the side of the Voronoi polyhedron 43, but cannot be specified from the lattice structure portion 20 whether it forms the Delaunay side 32 or the side of the Voronoi polyhedron 43. good too.
  • the lattice structure 20 is arranged such that the end of the first rod-shaped portion 22 forming one Delaunay point 31 or one vertex of the Voronoi polyhedron 43 and the housing wall portion 5 are connected by one second rod-shaped portion 23. It may have a first portion 24 formed (see, eg, FIGS. 4(a) and 4(c)).
  • the lattice structure 20 is arranged such that the end of the first rod-shaped portion 22 forming one Delaunay point 31 or one vertex of the Voronoi polyhedron 43 and the housing wall portion 5 are connected by a plurality of second rod-shaped portions 23. It may have a second portion 25 formed therein (see, eg, FIGS. 4(b), 4(d), and 4(e)).
  • Lattice structure 20 may have both first portion 24 and second portion 25 .
  • the lattice structure 20 may have only the first portion 24 or only the second portion 25 out of the first portion 24 and the second portion 25 .
  • the second portion 25 includes one second rod-shaped portion 23 directly connected to the end of the first rod-shaped portion 22 forming one Delaunay point 31. , is directly connected to at least one second rod-like portion 23 that is continuous with the housing wall portion 5 (see, for example, FIG. 4(b)).
  • 23 may be directly connected to at least one second rod-like portion 23 that is continuous with the housing wall portion 5 (see, for example, FIG. 4(d)).
  • the lattice structure portion 20 includes the Voronoi lattice structure portion 40 in the second portion 25 , the ends of the first rod-shaped portions 22 forming one vertex of the Voronoi polyhedron 43 are directly connected to the plurality of second rod-shaped portions 23 . (see, for example, FIG. 4(e)).
  • the maximum length of the plurality of second rod-shaped portions 23 is equal to or less than the maximum length of the plurality of first rod-shaped portions 22 .
  • the lattice structure 20 includes the Delaunay lattice structure 30
  • the shortest distance between the end of the first rod-shaped portion 22 to which the second rod-shaped portion 23 is connected and the housing wall portion 5 is less than the maximum length of 22.
  • the lattice structure portion 20 includes the Voronoi lattice structure portion 40
  • the shortest distance between the end of the first rod-shaped portion 22 to which the second rod-shaped portion 23 is connected and the housing wall portion 5 is only the Voronoi boundary surface 42. It is shorter than the maximum length of the plurality of Voronoi polyhedrons 43 to be formed.
  • a housing 1 according to a fourth embodiment of the present invention will be described.
  • the fourth embodiment may or may not have the configurations of the second to third embodiments.
  • the fourth embodiment has the following configuration in addition to the configuration of the first embodiment.
  • the lattice structure 20 includes the Delaunay lattice structure 30
  • the maximum length of the plurality of first rod-shaped portions 22 is less than four times the average length of the plurality of first rod-shaped portions 22 .
  • the maximum length of the plurality of first rod-shaped portions 22 may be smaller than three times the average length of the plurality of first rod-shaped portions 22 .
  • the maximum value of the distance between the two generating points 41 located on both sides of the Voronoi boundary surface 42 surrounded by the plurality of first rod-shaped portions 22 is the same as the plurality of first It is smaller than four times the average value of the distances between the two generating points 41 positioned on both sides of the Voronoi boundary surface 42 surrounded by the bar-shaped portion 22 .
  • the maximum value of the distance between the two generating points 41 positioned on both sides of the Voronoi boundary surface 42 surrounded by the plurality of first rod-shaped portions 22 is on both sides of the Voronoi boundary surface 42 surrounded by the plurality of first rod-shaped portions 22 It may be smaller than three times the average value of the distances between the two generating points 41 located. In the Voronoi lattice structure 40 , the maximum length of the plurality of first rod-shaped portions 22 is less than five times the average length of the plurality of first rod-shaped portions 22 .
  • the Delaunay lattice structure part 30 is formed such that two line segments S4 and S5 each pass through two or more Delaunay triangular pyramids 33 formed by connecting points between the first rod-shaped parts 22 at all Delaunay points 31. be.
  • the Voronoi lattice structure part 40 is formed such that two line segments S4 and S5 each pass through two or more Voronoi polyhedrons 43 formed by connecting points between the first rod-shaped parts 22 at all vertices. Regardless of whether the lattice structure 20 includes the Delaunay lattice structure 30 or the Voronoi lattice structure 40, the lattice structure 20 forms a portion of the housing wall 5 and the housing wall in the directions of the two line segments S4 and S5.
  • FIGS. 6(a) to 6(d) A housing 1 according to a sixth embodiment of the present invention will be described with reference to FIGS. 6(a) to 6(d).
  • the sixth embodiment has the configuration of the first embodiment.
  • the sixth embodiment may or may not have the configurations of the second to fifth embodiments.
  • 6(a) and 6(b) show one example of the sixth embodiment
  • FIGS. 6(c) and 6(d) show another example of the sixth embodiment.
  • the housing 1 of the sixth embodiment has a lattice structure 20 provided in the refrigerant passage 10 .
  • 6(a) and 6(c) show cross sections along the coolant flow direction F, respectively.
  • FIGS. 6(b) and 6(d) show cross sections taken along line AA shown in FIGS. 6(a) and 6(c), respectively.
  • At least part of the refrigerant passage 10 in the refrigerant flow direction F has a first passage portion 11 provided with at least a portion of the lattice structure 20 and a second passage portion 12 not provided with the lattice structure 20. .
  • the second passage portion 12 and the first passage portion 11 are arranged in a direction crossing the refrigerant flow direction F.
  • At least part of the Delaunay lattice structure 30 or the Voronoi lattice structure 40 is provided in the first passage portion 11 .
  • Three line segments included in the first passage portion 11 and orthogonal to each other are set to line segments S6, S7, and S8.
  • the Delaunay lattice structure 30 has three line segments S6, S7, and S8 such that all the Delaunay points 31 pass through two or more Delaunay triangular pyramids 33 formed by connecting points between the first rods 22, respectively. It is formed.
  • the Voronoi lattice structure part 40 is formed such that three line segments S6, S7, and S8 each pass through two or more Voronoi polyhedrons 43 each having its vertices formed by connecting points between the first rod-shaped parts 22. . 6(a) to 6(d), the three line segments S6, S7, and S8 are parallel to the edge of the coolant passage 10, respectively.
  • the shape of the refrigerant passage 10 and the directions and positions of the three line segments S6, S7 and S8 are not limited to those shown in FIGS. 6(a) to 6(d).
  • FIGS. 7(a) and 7(b) A housing 1 according to a seventh embodiment of the present invention will be described with reference to FIGS. 7(a) and 7(b).
  • the seventh embodiment has the configuration of the first embodiment.
  • the seventh embodiment may or may not have the configurations of the second to sixth embodiments.
  • FIGS. 7(a) and 7(b) are merely examples of the seventh embodiment.
  • the housing 1 of the seventh embodiment has a lattice structure 20 provided in the coolant passage 10 .
  • the refrigerant passage 10 has a flow direction changing portion 13 in which the refrigerant flow direction F changes. At least a portion of the lattice structure portion 20 is provided on at least a portion of the flow direction changing portion 13 .
  • FIG. 7(a) shows a cross section along the coolant flow direction F
  • FIG. 7(b) shows a cross section taken along line BB shown in FIG. 7(a).
  • FIG. 7(b) shows the second cross section.
  • the Delaunay lattice structure part 30 is formed such that two line segments S9 and S10 each pass through two or more Delaunay triangular pyramids 33 formed by connecting points between the first rod-shaped parts 22 at all Delaunay points 31. be.
  • the Voronoi lattice structure part 40 is formed such that two line segments S9 and S10 each pass through two or more Voronoi polyhedrons 43 formed by connecting points between the first rod-shaped parts 22 at all vertices.
  • the shape of the flow direction changing portion 13 is not limited to the shape shown in FIGS. 7(a) and 7(b). Also, in FIG. 7A, the two line segments S9 and S10 are parallel to the edge of the coolant passage 10, respectively. However, the shape of the refrigerant passage 10 in the second cross section and the directions and positions of the two line segments S9 and S10 are not limited to those shown in FIG. 7(a).
  • FIGS. 7(c) and 7(d) A housing 1 according to an eighth embodiment of the present invention will be described with reference to FIGS. 7(c) and 7(d).
  • the eighth embodiment has the configuration of the first embodiment.
  • the eighth embodiment may or may not have the configurations of the second to seventh embodiments.
  • FIGS. 7(c) and 7(d) are merely examples of the eighth embodiment.
  • the housing 1 of the eighth embodiment has a lattice structure 20 provided in the coolant passage 10 .
  • the coolant passage 10 has a cross-sectional change portion 14 in which the cross-sectional area of the coolant passage 10 changes. At least a portion of the lattice structure portion 20 is provided on at least a portion of the cross-section changing portion 14 .
  • FIG. 7(c) shows a cross section along the coolant flow direction F
  • FIG. 7(d) shows a cross section taken along line CC shown in FIG. 7(c).
  • FIG. 7(d) shows a third cross section.
  • the Delaunay lattice structure part 30 is formed such that two line segments S11 and S12 each pass through two or more Delaunay triangular pyramids 33 formed by connecting points between the first rod-shaped parts 22. be.
  • the Voronoi lattice structure part 40 is formed such that two line segments S11 and S12 each pass through two or more Voronoi polyhedrons 43 formed by connecting points of the first rod-shaped parts 22 at all vertices.
  • the shape of the cross-section changing portion 14 is not limited to the shapes shown in FIGS. 7(c) and 7(d).
  • the two line segments S11 and S12 are parallel to the edge of the coolant passage 10, respectively.
  • the shape of the coolant passage 10 in the third cross section and the directions and positions of the two line segments S11 and S12 are not limited to those shown in FIG. 7(c).
  • a housing 101 according to a ninth embodiment of the present invention will be described with reference to FIGS. 8(a) to 8(c), 9(a), and 9(b).
  • a housing 101 of the ninth embodiment has the configuration of the housing 1 of the first embodiment.
  • the housing 101 of the ninth embodiment may have the configuration of the housing 1 of any one of the second to eighth embodiments.
  • a housing 101 of the ninth embodiment accommodates a rotating electric machine 190 .
  • the rotating electric machine 190 may be a motor, a generator, or may have the functions of both a motor and a generator.
  • the rotating electrical machine 190 may be an axial gap type rotating electrical machine 190 as shown in FIG. 8A, an inner rotor type radial gap type rotating electrical machine 190 as shown in FIG.
  • the rotary electric machine 190 may be an outer rotor type radial gap type rotary electric machine 190 as shown in c).
  • the rotating electric machine 190 has a shaft 191 , a rotor 192 and a stator 193 .
  • the shaft 191 is rotatably supported by the housing 101 via bearings.
  • Rotor 192 is fixed to shaft 191 and rotates integrally with shaft 191 .
  • the rotor 192 has magnets 192a.
  • the stator 193 has a stator yoke 193a and a winding portion 193b. As shown in FIG.
  • a rotor 192 and a stator 193 face each other in a direction parallel to the central axis of the shaft 191 .
  • a rotor 192 is arranged radially inside a stator 193 in an inner rotor type radial gap type rotating electric machine 190 .
  • the magnets 192 a of the rotor 192 are arranged radially outward of the stator 193 in an outer rotor type radial gap type rotating electric machine 190 .
  • the housing 101 has a housing wall portion 105 that forms a housing space 104 that houses the rotating electrical machine 190.
  • the housing wall portion 105 has a substantially plate-shaped lower wall portion 151 , a cylindrical side wall portion 152 , and a substantially plate-shaped upper wall portion 153 .
  • Side wall portion 152 connects upper wall portion 153 and lower wall portion 151 .
  • the side wall portion 152 is formed integrally with the upper wall portion 153 .
  • the side wall portion 152 may be integrally molded with the lower wall portion 151 .
  • the lower wall portion 151 is located below the upper wall portion 153 in the vertical direction of the paper surface, it is not always located below the upper wall portion 153 when the housing 101 is used.
  • the lower wall portion 151 may be positioned above the upper wall portion 153, and the lower wall portion 151 and the upper wall portion 153 may be horizontally aligned.
  • Side wall portion 152 is positioned radially outward of rotating electric machine 190 .
  • the stator 193 is fixed to the lower wall portion 151 and is in contact with the lower wall portion 151 or in contact with a member (not shown) that contacts the lower wall portion 151 .
  • FIG. 8B the stator 193 is fixed to the side wall portion 152 and is in contact with the side wall portion 152 or in contact with a member (not shown) that contacts the side wall portion 152 .
  • FIG. 8A the stator 193 is fixed to the lower wall portion 151 and is in contact with the lower wall portion 151 or in contact with a member (not shown) that contacts the lower wall portion 151 .
  • the stator 193 is fixed to the side wall portion 152 and is in contact with the side wall portion 152 or in contact with a member (not shown) that
  • the housing wall portion 105 has an inner cylindrical portion 154 connected to the lower wall portion 151 and positioned radially inward of the stator 193 .
  • the stator 193 is fixed to the inner tubular portion 154 and is in contact with the inner tubular portion 154 or in contact with a member (not shown) that contacts the inner tubular portion 154 .
  • the housing wall portion 105 forms a plurality of refrigerant passages 110 .
  • the refrigerant flowing through each refrigerant passage 110 may be gas (for example, air) or liquid.
  • a fan (not shown) may be provided on the shaft 191 for sending the air outside the housing 101 to the inlet of the coolant passage 110 .
  • the inlet and outlet of each coolant passage 110 are formed on the outer surface 106 of the housing wall portion 105 .
  • a plurality of coolant passages 110 are formed at intervals in the circumferential direction around the central axis of shaft 191 .
  • Each coolant passage 110 is formed in an upper wall portion 153 , a side wall portion 152 and a lower wall portion 151 .
  • Each refrigerant passage 110 is composed of a refrigerant passage lower portion 110a, a refrigerant passage intermediate portion 110b, and a refrigerant passage upper portion 110c.
  • the refrigerant passage lower portion 110 a is a portion of the refrigerant passage 110 formed in the lower wall portion 151 .
  • the refrigerant passage intermediate portion 110 b is a portion of the refrigerant passage 110 formed in the side wall portion 152 .
  • the coolant passage upper portion 110 c is a portion of the coolant passage 110 formed in the upper wall portion 153 .
  • Each coolant passage 110 is provided with two lattice structure portions 20 .
  • One of the two lattice structure portions 20 is provided on the lower wall portion 151 and the other lattice structure portion 20 is provided on the side wall portion 152 and the upper wall portion 153 .
  • the two lattice structure portions 20 are provided throughout the coolant flow direction F of the coolant passage 110 .
  • the two lattice structure portions 20 may be provided only in a portion of the coolant passage 110 in the coolant flow direction F.
  • Each lattice structure 20 is integrally molded.
  • the coolant passage 110 has a bent portion at a corner of the housing 101 or the like, where the coolant flow direction F is bent.
  • the bent portion is included in the flow direction change portion 13 .
  • the coolant passage 110 has bent portions at both ends of the coolant passage lower portion 110a and both ends of the coolant passage upper portion 110c.
  • the coolant passage 110 has a tapered portion in a portion including the inlet in which the area of the cross section continuously decreases toward the downstream in the coolant flow direction F. As shown in FIG. This makes it easier for the coolant to flow into the coolant passage 110 from the inlet of the coolant passage 110 .
  • the tapered portion is included in the cross-section changing portion 14 of the eighth embodiment.
  • 9A is a perspective view of the side wall portion 152.
  • the coolant flow direction F of the coolant passage intermediate portion 110b is spiral. That is, the coolant flow direction F of the coolant passage intermediate portion 110b is inclined in the circumferential direction with respect to the direction of the central axis of the shaft 191 . Since the length of the refrigerant passage middle portion 110b in the refrigerant flow direction F is longer than when the refrigerant passage middle portion 110b is parallel to the central axis of the shaft 191, the cooling performance can be improved. Since the refrigerant passage intermediate portion 110 b is formed in a spiral shape on the cylindrical side wall portion 152 , the refrigerant flow direction F of the refrigerant passage intermediate portion 110 b gently curves along the side wall portion 152 .
  • the refrigerant passage intermediate portion 110 b is included in the flow direction changing portion 13 .
  • 9B is a view of the upper wall portion 153 viewed in the direction of the central axis of the shaft 191, and a view of the lower wall portion 151 viewed in the direction of the central axis of the shaft 191.
  • FIG. 9(b) the refrigerant passage upper portion 110c and the refrigerant passage lower portion 110a have curved portions in which the refrigerant flow direction F is substantially radial.
  • the refrigerant passage upper portion 110c and the refrigerant passage lower portion 110a are longer in the refrigerant flow direction F. , can improve the cooling performance.
  • a curved portion in which the refrigerant flow direction F is substantially radial when viewed in the direction of the central axis of the shaft 191 is included in the flow direction changing portion 13 .
  • the coolant passage lower portion 110a in FIG. 8A is a portion of the housing wall portion 105 in contact with the stator 193, a portion in contact with a member (not shown) in contact with the stator 193, or a minute gap. It is formed so as to pass through a position close to the part facing the stator 193 with an opening.
  • the upper part 110c of the coolant passage in FIG. 8(b) is a portion of the housing wall portion 105 in contact with the stator 193, a portion in contact with a member (not shown) in contact with the stator 193, or a minute gap. It is formed so as to pass through a position close to the part facing the stator 193 with an opening.
  • the refrigerant passage lower portion 110a among the refrigerant passage lower portion 110a, the refrigerant passage intermediate portion 110b, and the refrigerant passage upper portion 110c is in contact with the stator 193 in the housing wall portion 105 or It is closest to the point where a member (not shown) that contacts the stator 193 is in contact. Therefore, the coolant flowing through the coolant passage 110 in FIGS. 8A to 8C easily receives heat generated by the stator 193 and the rotor 192 . Since the lattice structure 20 is provided in the coolant passage 110 having high cooling performance in this manner, the cooling performance of the housing 101 can be further improved.
  • the refrigerant passage lower portion 110a does not have to have a bent portion. That is, the refrigerant flow direction F of the entire refrigerant passage lower portion 110a may be the same as the refrigerant flow direction F of the refrigerant passage intermediate portion 110b.
  • the coolant passage upper portion 110c may not have a bent portion. That is, the refrigerant flow direction F of the entire refrigerant passage upper portion 110c may be the same as the refrigerant flow direction F of the refrigerant passage intermediate portion 110b.
  • the refrigerant flow direction F of the refrigerant passage intermediate portion 110b may be linear parallel to the direction of the center axis of the shaft 191 .
  • the side wall portion 152 may have a square tubular shape. In this case, the coolant flow direction F of the coolant passage intermediate portion 110 b may be a straight line that is inclined with respect to the direction of the central axis of the shaft 191 .
  • FIG. 10(a) shows an example in which the housing 101 of FIG. 8(a) is changed
  • the housing 101 of FIGS. 8(b) and 8(c) may be changed.
  • the housing 101 shown in FIG. 10A will be described below.
  • a housing wall portion 105 of the housing 101 forms a plurality of first refrigerant passages 110A1 and a plurality of second refrigerant passages 110A2.
  • the refrigerant passage 110A is a general term for the first refrigerant passage 110A1 and the second refrigerant passage 110A2.
  • each coolant passage 110A is formed on the outer surface 106 of the housing wall portion 105 .
  • the first refrigerant passage 110A1 differs from the refrigerant passage 110 of the ninth embodiment in the shape of the refrigerant passage lower portion 110a, and otherwise has the same configuration as the refrigerant passage 110 of the ninth embodiment.
  • the second coolant passage 110A2 is formed only in the lower wall portion 151. As shown in FIG.
  • the second refrigerant passage 110A2 has the same shape as most of the refrigerant passage lower portion 110a of the refrigerant passage 110 of the ninth embodiment, and differs from the refrigerant passage lower portion 110a in the shape near the outlet.
  • the first coolant passages 110A1 and the second coolant passages 110A2 are alternately arranged in the circumferential direction around the central axis of the shaft 191.
  • Two lattice structure portions 20 are provided in each first coolant passage 110A1.
  • One of the two lattice structure portions 20 is provided on the lower wall portion 151 and the other lattice structure portion 20 is provided on the side wall portion 152 and the upper wall portion 153 .
  • the two lattice structure portions 20 are provided over the entire area of the first coolant passage 110A1 in the coolant flow direction F.
  • the two lattice structure portions 20 may be provided only partially in the coolant flow direction F of the first coolant passage 110A1.
  • Each lattice structure 20 is integrally molded.
  • One lattice structure portion 20 is provided in each second coolant passage 110A2.
  • the lattice structure portion 20 is provided over the entire area of the second refrigerant passage 110A2 in the refrigerant flow direction F. As shown in FIG.
  • the lattice structure portion 20 may be provided only in a portion of the second coolant passage 110A2 in the coolant flow direction F.
  • the lattice structure 20 is integrally molded.
  • Modification 1 of the ninth embodiment although the locations where the refrigerant passages are formed are substantially the same as in the ninth embodiment, the length of each refrigerant passage in the refrigerant flow direction F can be made shorter than in the ninth embodiment. , can improve the cooling performance. Since the lattice structure 20 is provided in the coolant passage 110A having high cooling performance in this manner, the cooling performance of the housing 101 can be further improved.
  • the housing wall portion 105 of the housing 101 has a plurality of internal circulation refrigerant passages 110B in addition to the plurality of first refrigerant passages 110A1 and the plurality of second refrigerant passages 110A2 of Modification 1 of the ninth embodiment.
  • the internal circulation refrigerant passage 110B is included in the refrigerant passage of the present invention.
  • the inlet and outlet of each internal circulation coolant passage 110B are formed on the inner surface 107 of the housing wall portion 105 .
  • the plurality of internal circulation refrigerant passages 110B are formed at intervals in the circumferential direction around the central axis of the shaft 191 .
  • Each internal circulation refrigerant passage 110B is formed in the upper wall portion 153 and the side wall portion 152 .
  • FIG. 10(c) shows an example in which the housing 101 of FIG. 8(a) is changed, but the housing 101 of FIGS. 8(b) and 8(c) may be changed.
  • the lattice structure 20 is provided only on the lower wall 151 in FIG.
  • the housing 101 does not have the coolant passage 110 in FIG. 10C, it may have the coolant passage 110 .
  • FIG. 11(b) is a cross-sectional view taken along line DD shown in FIG. 11(a).
  • FIG. 11(c) is a cross-sectional view taken along line EE shown in FIG. 11(a).
  • a housing 201 of the tenth embodiment has the configuration of the housing 1 of the first embodiment.
  • the housing 201 of the tenth embodiment may have the configuration of the housing 1 of any one of the second to eighth embodiments. As shown in FIGS.
  • the housing 201 of the tenth embodiment accommodates a content 290 including a plurality of rechargeable power storage devices 291 .
  • the power storage device 291 may be a cell or an assembled battery composed of a plurality of cells.
  • the cells may be cylindrical, rectangular, or laminated. Heat is generated in the power storage device 291 when the power storage device 291 is discharged or charged.
  • the power storage device 291 corresponds to the heat source of the present invention.
  • the content 290 includes a heat dissipation member 292 with high thermal conductivity. Heat dissipation member 292 is arranged so as to be in contact with power storage device 291 .
  • Contents 290 may include a battery management system (BMS: battery management system) that manages charging and discharging of power storage device 291 .
  • BMS battery management system
  • the housing 201 has a housing wall portion 205 that forms a housing space 204 that houses a content 290 including a plurality of power storage devices 291 .
  • the housing 201 has a substantially rectangular parallelepiped shape.
  • the housing wall portion 205 has a substantially plate-shaped lower wall portion 251 , a rectangular tubular side wall portion 252 , a substantially plate-shaped upper wall portion 253 , and a plurality of partition wall portions 254 .
  • Side wall portion 252 connects upper wall portion 253 and lower wall portion 251 .
  • the side wall portion 252 is formed integrally with the lower wall portion 251 .
  • the side wall portion 252 may be integrally formed with the upper wall portion 253 .
  • the lower wall portion 251 is located below the upper wall portion 253 in the vertical direction of the paper surface of FIG. In a situation where the housing 201 is used, the lower wall portion 251 may be positioned above the upper wall portion 253, and the lower wall portion 251 and the upper wall portion 253 may be horizontally aligned.
  • a plurality of partition wall portions 254 are connected to the lower wall portion 251 .
  • the plurality of partition wall portions 254 may be connected to the upper wall portion 253 without being connected to the lower wall portion 251 .
  • a plurality of partition wall portions 254 may be connected to both the lower wall portion 251 and the upper wall portion 253 .
  • Each partition wall portion 254 is arranged between a power storage device 291 and an adjacent power storage device 291 .
  • a plurality of heat dissipation members 292 are in contact with the housing wall portion 205 .
  • Each heat radiating member 292 contacts the lower wall portion 251 .
  • each heat dissipation member 292 contacts at least one of the partition wall portion 254 and the side wall portion 252 .
  • the portion of the heat radiating member 292 that contacts the housing wall portion 205 is not limited to this.
  • the heat dissipation member 292 may function as a shock absorber.
  • the housing wall portion 205 forms a plurality of refrigerant passages 210 .
  • the refrigerant flowing through each refrigerant passage 210 may be gas (for example, air) or liquid.
  • the inlet and outlet of each coolant passage 210 are formed in the outer surface 206 of the housing wall portion 205 .
  • the plurality of coolant passages 210 are formed at intervals in the vertical direction of the paper surface of FIG. 11(a).
  • the plurality of refrigerant passages 210 includes a plurality of first refrigerant passages 210A and second refrigerant passages 210B.
  • Each first coolant passage 210 ⁇ /b>A is formed in a side wall portion 252 and a plurality of partition wall portions 254 .
  • the second coolant passage 210B is formed in the lower wall portion 251 .
  • Each coolant passage 210 is provided with one lattice structure 20 .
  • the lattice structure portion 20 is provided over the entire area of the refrigerant passage 210 in the refrigerant flow direction F. As shown in FIG.
  • the lattice structure portion 20 may be provided only in a part of the coolant passage 210 in the coolant flow direction F.
  • the lattice structure 20 is integrally molded.
  • the first refrigerant passage 210A and the second refrigerant passage 210B have bent portions at the corners of the housing 201 or the like where the refrigerant flow direction F bends.
  • the bent portions of the first refrigerant passage 210A and the second refrigerant passage 210B are included in the flow direction changing portion 13 .
  • the second refrigerant passage 210B has a shape that can be drawn with a single stroke from the inlet to the outlet.
  • the first refrigerant passage 210A has a branch point where the refrigerant flow branches and a confluence point where the refrigerant flow joins.
  • the branching portion including the branching point and the branching portion including the merging point of the first refrigerant passage 210A serve as both the flow direction changing portion 13 and the cross section changing portion 14 .
  • the first refrigerant passage 210A and the second refrigerant passage 210B have tapered portions in which the area of the cross section continuously decreases toward the downstream in the refrigerant flow direction F in the portions including the inlets.
  • the tapered portion is included in the cross-section changing portion 14 .
  • a plurality of first coolant passages 210A are formed to surround a plurality of power storage devices 291 . Therefore, the coolant flowing through the first coolant passage 210A easily receives the heat generated in the power storage device 291 .
  • the second refrigerant passage 210B is positioned directly below the power storage device 291 in the vertical direction of the paper surface of FIG. 11(a). Therefore, the coolant flowing through the second coolant passage 210 ⁇ /b>B easily receives the heat generated in the power storage device 291 . Since the lattice structure portion 20 is provided in the coolant passages 210A and 210B having high cooling performance in this manner, the cooling performance of the housing 201 can be further improved. Note that the housing wall portion 205 having the second refrigerant passage 210B may not have the plurality of first refrigerant passages 210A. The housing wall portion 205 having the plurality of first coolant passages 210A may not have the second coolant passages 210B.
  • a housing 301 according to an eleventh embodiment of the present invention will be described with reference to FIGS. 12(a) and 12(b).
  • a housing 301 of the eleventh embodiment has the configuration of the housing 1 of the first embodiment.
  • the housing 301 of the eleventh embodiment may have the configuration of the housing 1 of any one of the second to eighth embodiments.
  • a housing 301 of the eleventh embodiment accommodates an electronic device 390 .
  • the electronic device 390 has a circuit board 391, electronic components 392 mounted on the surface of the circuit board 391, and a heat dissipation member 393 with high thermal conductivity.
  • Circuit board 391 and electronic component 392 correspond to the heat source of the present invention.
  • the heat dissipation member 393 is in contact with the back surface of the circuit board 391 .
  • the housing 301 has a housing wall portion 305 that forms a housing space 304 that houses the electronic device 390 .
  • the housing 301 has a substantially rectangular parallelepiped shape.
  • the housing wall portion 305 has a substantially plate-shaped lower wall portion 351 , a rectangular tubular side wall portion 352 , and a substantially plate-shaped upper wall portion 353 .
  • the side wall portion 352 connects the upper wall portion 353 and the lower wall portion 351 .
  • the side wall portion 352 is formed integrally with the upper wall portion 353 .
  • the side wall portion 352 may be integrally formed with the lower wall portion 351 .
  • the lower wall portion 351 may be positioned above the upper wall portion 353, and the lower wall portion 351 and the upper wall portion 353 may be horizontally aligned.
  • the circuit board 391 is fixed to the lower wall portion 351 .
  • a heat dissipation member 393 is arranged between the circuit board 391 and the lower wall portion 351 . The heat dissipation member 393 is in contact with the lower wall portion 351 .
  • housing wall portion 305 forms refrigerant passage 310 .
  • the refrigerant flowing through the refrigerant passage 310 may be gas (for example, air) or liquid.
  • the inlet and outlet of the coolant passage 310 are formed on the outer surface 306 of the housing wall portion 305 .
  • the coolant passage 310 is formed in the lower wall portion 351 , the side wall portion 352 and the upper wall portion 353 .
  • Two lattice structure portions 20 are provided in the coolant passage 310 .
  • One of the two lattice structure portions 20 is provided on the lower wall portion 351 and the other lattice structure portion 20 is provided on the side wall portion 352 and the upper wall portion 353 .
  • the two lattice structure portions 20 are provided over the entire area of the coolant passage 310 in the coolant flow direction F. As shown in FIG. The two lattice structure portions 20 may be provided only in a portion of the coolant passage 310 in the coolant flow direction F. Each lattice structure 20 is integrally molded.
  • the coolant passage 310 has a bent portion where the coolant flow direction F is bent, such as at a corner of the housing 301 . The bent portion is included in the flow direction change portion 13 .
  • the refrigerant passage 310 has a branch point where the refrigerant flow branches and a confluence point where the refrigerant flow joins.
  • the branching portion including the branching point and the merging portion including the merging point of the refrigerant passage 310 serve as both the flow direction changing portion 13 and the cross section changing portion 14 .
  • the coolant passage 310 has a tapered portion in a portion including the inlet in which the area of the cross section continuously decreases toward the downstream in the coolant flow direction F. As shown in FIG. The tapered portion is included in the cross-section changing portion 14 .
  • a portion of the coolant passage 310 is formed in the lower wall portion 351 of the housing wall portion 305 . In other words, part of the coolant passage 310 passes through a portion of the housing wall portion 305 that is most likely to receive heat from the electronic device 390 .
  • the coolant flowing through coolant passage 310 easily receives heat generated by circuit board 391 and electronic component 392 . Since the lattice structure 20 is provided in the coolant passage 310 having high cooling performance in this manner, the cooling performance of the housing 301 can be further improved. Note that the coolant passage 310 may be formed only in the lower wall portion 351 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

Une enceinte (1) présente une structure de refroidissement dans laquelle de la chaleur générée par une source de chaleur (3), qui est logée dans un espace de logement (4) formé par une paroi d'enceinte (5), est dissipée vers l'extérieur de l'enceinte. La structure de refroidissement de l'enceinte comprend une structure en treillis (20) qui est formée de manière à être continue avec la surface externe (6) ou la surface interne (7) de la paroi d'enceinte, ou est formée de manière à être continue avec ni la surface externe ni la surface interne de la paroi d'enceinte et continue avec la paroi d'enceinte formant un passage de fluide frigorigène (10) à travers lequel s'écoule un fluide frigorigène. La structure en treillis (20) comprend : une structure en treillis de Delaunay (30) comprenant une pluralité de premières parties en forme de tige (22) pour former une pluralité de côtés de Delaunay (32) dans un diagramme de Delaunay tridimensionnel ; ou, une structure en treillis de Voronoi (40) comprenant une pluralité de premières parties en forme de tige (22) pour former des côtés d'une pluralité de polyèdres de Voronoi (43) formés uniquement par des surfaces de limite de Voronoi (42) dans un diagramme de Voronoi tridimensionnel.
PCT/JP2021/026471 2021-07-14 2021-07-14 Enceinte WO2023286206A1 (fr)

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PCT/JP2022/026289 WO2023286631A1 (fr) 2021-07-14 2022-06-30 Dispositif comprenant un boîtier
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008064002A (ja) * 2006-09-06 2008-03-21 Ihi Corp 冷却構造
JP2010041835A (ja) * 2008-08-06 2010-02-18 Mitsubishi Motors Corp 回転電機
WO2020195004A1 (fr) * 2019-03-28 2020-10-01 日本電産株式会社 Moteur, dispositif d'aile rotative et corps volant sans équipage
JP2020179044A (ja) * 2019-04-26 2020-11-05 国立大学法人 筑波大学 緩衝材、枕、マットレス、椅子、及びプロテクター
JP2021050688A (ja) * 2019-09-26 2021-04-01 川崎重工業株式会社 タービン翼

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6693806B2 (ja) * 2016-05-20 2020-05-13 株式会社Ihi ラティス構造及び部品

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008064002A (ja) * 2006-09-06 2008-03-21 Ihi Corp 冷却構造
JP2010041835A (ja) * 2008-08-06 2010-02-18 Mitsubishi Motors Corp 回転電機
WO2020195004A1 (fr) * 2019-03-28 2020-10-01 日本電産株式会社 Moteur, dispositif d'aile rotative et corps volant sans équipage
JP2020179044A (ja) * 2019-04-26 2020-11-05 国立大学法人 筑波大学 緩衝材、枕、マットレス、椅子、及びプロテクター
JP2021050688A (ja) * 2019-09-26 2021-04-01 川崎重工業株式会社 タービン翼

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WO2023286631A1 (fr) 2023-01-19

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