WO2021019993A1 - 隔壁式熱交換器 - Google Patents
隔壁式熱交換器 Download PDFInfo
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- WO2021019993A1 WO2021019993A1 PCT/JP2020/025286 JP2020025286W WO2021019993A1 WO 2021019993 A1 WO2021019993 A1 WO 2021019993A1 JP 2020025286 W JP2020025286 W JP 2020025286W WO 2021019993 A1 WO2021019993 A1 WO 2021019993A1
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- flow path
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- heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/02—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the heat-exchange media travelling at an angle to one another
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
- F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
Definitions
- the technology of this disclosure relates to a bulkhead heat exchanger.
- a partition type heat exchanger that exchanges heat between fluids separated by a partition is known.
- Such a partition type heat exchanger can be made compact by determining the heat transfer area required for heat exchange of each fluid in consideration of the heat conductance equilibrium condition (see Patent Document 1).
- the partition wall heat exchanger has a problem that it is difficult to optimize the shape of the heat transfer surface.
- the disclosed technique has been made in view of the above points, and provides a partition type heat exchanger having a heat transfer surface having a shape that enables the heat exchanger to be compact and improves the heat transfer performance.
- the purpose is.
- the partition wall heat exchanger divides the space formed between the first partition wall, the second partition wall, and the first partition wall and the second partition wall into a plurality of first flow paths. It is equipped with a flow path wall.
- the first partition wall and the second partition wall separate the plurality of first flow paths from a second flow path through which a second fluid different from the first fluid flowing through the plurality of first flow paths flows.
- a plurality of wall surfaces are formed in the plurality of flow path walls. Each of the plurality of wall surfaces follows a sinusoidal curve whose position is different from each other.
- a main flow path wall element is formed in a portion of the one flow path wall that overlaps the phase ⁇ of ⁇ 1 ⁇ ⁇ ⁇ 3 and ⁇ 6 ⁇ ⁇ ⁇ 8 by forming a plurality of flow path wall-less portions. ing. In the other flow path wall, a plurality of flow path wall-less portions are formed, so that a main flow path wall element is formed in a portion overlapping the phase ⁇ of ⁇ 2 ⁇ ⁇ ⁇ 4 and ⁇ 5 ⁇ ⁇ ⁇ 7. ing.
- the disclosed partition type heat exchanger can make the heat exchanger compact and improve its heat transfer performance.
- FIG. 1 is a perspective view showing the partition wall heat exchanger of the first embodiment.
- FIG. 2 is an exploded perspective view showing the heat exchanger main body.
- FIG. 3 is a plan view showing the first heat exchanger plate of one of the plurality of first heat exchanger plates.
- FIG. 4 is a plan view showing a second heat exchanger plate of one of the plurality of second heat exchanger plates.
- FIG. 5 is a plan view showing the recess for the first heat exchange flow path.
- FIG. 6 is a plan view showing two adjacent flow path walls among the plurality of first flow path walls.
- FIG. 7 is an enlarged cross-sectional view taken along the line AA of FIG. FIG.
- FIG. 8 is a plan view showing a plurality of odd-numbered flow path walls and a plurality of even-numbered flow path walls formed in the partition wall heat exchanger of the second embodiment.
- FIG. 9 is an explanatory view schematically showing a plurality of odd-numbered flow path walls and a plurality of even-numbered flow path walls formed in the partition wall heat exchanger of the second embodiment.
- FIG. 10 is a plan view showing the odd-numbered flow path wall elements.
- FIG. 11 is a plan view showing a plurality of odd-numbered flow path walls formed in the partition wall heat exchanger of the third embodiment.
- FIG. 12 is an explanatory view schematically showing a plurality of odd-numbered flow path walls and a plurality of even-numbered flow path walls formed in the partition wall heat exchanger of the third embodiment.
- FIG. 9 is an explanatory view schematically showing a plurality of odd-numbered flow path walls and a plurality of even-numbered flow path walls formed in the partition wall heat exchanger of the second embodiment.
- FIG. 13 is a plan view showing the odd-numbered flow path wall elements.
- FIG. 14 is a plan view showing a plurality of odd-numbered flow path walls formed in the partition wall heat exchanger of the fourth embodiment.
- FIG. 15 is an explanatory view schematically showing a plurality of odd-numbered flow path walls and a plurality of even-numbered flow path walls formed in the partition wall heat exchanger of the fourth embodiment.
- FIG. 16 is an explanatory diagram showing an example of the presence or absence of a sub-channel wall element for each phase range of the sinusoidal curve of the odd-numbered channel wall which is the other channel wall and the even-numbered channel wall which is one channel wall. Is. FIG.
- FIG. 17 is an explanatory view showing an example of a change in the flow path width of the partition wall heat exchanger of the comparative example having no notch in the element.
- FIG. 18 is an explanatory view showing an example of a change in the flow path width of the partition wall heat exchanger of the fourth embodiment.
- FIG. 19 is an explanatory diagram showing an example of the fluid behavior of the front edge effect of the partition wall heat exchanger of the fourth embodiment.
- FIG. 20 is a plan view showing one odd-numbered flow path wall element and one odd-numbered main flow path wall element among the plurality of odd-numbered flow path wall elements formed in the partition wall heat exchanger of the fifth embodiment. is there.
- FIG. 20 is a plan view showing one odd-numbered flow path wall element and one odd-numbered main flow path wall element among the plurality of odd-numbered flow path wall elements formed in the partition wall heat exchanger of the fifth embodiment. is there.
- FIG. 21 is a graph showing the heat transfer rate K and the product KA of the heat transfer rate K and the heat transfer area in the partition type heat exchanger of Example 5 and the partition type heat exchanger of Comparative Example.
- FIG. 22 is a graph showing the pressure loss of the partition wall heat exchanger of Example 5 and the pressure loss of the partition wall heat exchanger of Comparative Example.
- FIG. 23 is a plan view showing a part of one flow path wall included in the partition wall heat exchanger of the modified example.
- FIG. 1 is a perspective view showing the partition wall heat exchanger 1 of the first embodiment.
- the partition wall type heat exchanger 1 of the first embodiment has a heat exchanger main body 2, a first inflow pipe 5, a first outflow pipe 6, a second inflow pipe 7, and a second outflow pipe. It has 8 and.
- the first inflow pipe 5 causes the first fluid to flow into the heat exchanger main body 2.
- the first outflow pipe 6 causes the first fluid, which has been heat-exchanged with the second fluid in the heat exchanger main body 2, to flow out from the heat exchanger main body 2 to the outside.
- the second inflow pipe 7 causes the second fluid to flow into the heat exchanger main body 2.
- the second outflow pipe 8 causes the second fluid, which has been heat-exchanged with the first fluid in the heat exchanger main body 2, to flow out from the heat exchanger main body 2 to the outside.
- FIG. 2 is an exploded perspective view showing the heat exchanger main body 2.
- the heat exchanger main body 2 of FIG. 2 is a view in which the partition wall type heat exchanger 1 of FIG. 1 is rotated 180 degrees around the pipe axis of the second inflow pipe 7 or the second outflow pipe 8.
- the heat exchanger main body 2 includes a laminate 10, a first end plate 11, and a second end plate 12.
- the laminated body 10 is formed in a pillar body.
- the first end plate 11 covers one bottom surface S1 of the laminated body 10 which is a pillar body, and is fixed to the laminated body 10.
- the second end plate 12 covers the other bottom surface S2 on the opposite side of the bottom surface S1 of the laminated body 10 which is a pillar body, and is fixed to the laminated body 10.
- the heat exchanger main body 2 is formed with a first inflow chamber 14, a first outflow chamber 15, a second inflow chamber 16, and a second outflow chamber 17.
- first inflow chamber 14 the first outflow chamber 15, the second inflow chamber 16, and the second outflow chamber 17, both ends of four through holes penetrating the laminate 10 in the stacking direction 20 of the laminate 10, which will be described later, are first. It is formed by being closed by the first end plate 11 and the second end plate 12, respectively.
- the laminated body 10 is further formed with a first outflow hole 18 and a second outflow hole 19.
- the first outflow hole 18 is formed in the vicinity of the first outflow chamber 15 on the side surface of the laminated body 10, and connects the first outflow chamber 15 and the outside of the heat exchanger main body 2.
- one end of the first outflow pipe 6 is inserted into the first outflow hole 18 and fixed to the laminated body 10 so as to face the first outflow chamber 15, and the other end is arranged outside the heat exchanger main body 2.
- the second outflow hole 19 is formed in the vicinity of the second outflow chamber 17 on the side surface of the laminated body 10, and connects the inside of the second outflow chamber 17 to the outside of the heat exchanger main body 2.
- one end of the second outflow pipe 8 is inserted into the second outflow hole 19 and fixed to the laminated body 10 so as to face the second outflow chamber 17, and the other end is arranged outside the heat exchanger main body 2.
- the laminated body 10 is further formed with a first inflow hole and a second inflow hole (not shown).
- the first inflow hole is formed in the vicinity of the first inflow chamber 14 on the side surface of the laminated body 10, and connects the inside of the first inflow chamber 14 to the outside of the heat exchanger main body 2.
- one end of the first inflow pipe 5 is inserted into the first inflow hole and fixed to the laminated body 10 so as to face the first inflow chamber 14, and the other end is arranged outside the heat exchanger main body 2.
- the second inflow hole is formed in the vicinity of the second inflow chamber 16 on the side surface of the laminated body 10, and connects the inside of the second inflow chamber 16 to the outside of the heat exchanger main body 2.
- one end of the second inflow pipe 7 is inserted into the second inflow hole and fixed to the laminated body 10 so as to face the second inflow chamber 16, and the other end is arranged outside the heat exchanger main body 2. ..
- the laminated body 10 has a plurality of heat exchanger plates. Each of the plurality of heat exchanger plates is formed in a plate shape. The plurality of heat exchanger plates are arranged perpendicular to the stacking direction 20 and are laminated so as to be in close contact with each other. The plurality of heat exchanger plates has a plurality of first heat exchanger plates and a plurality of second heat exchanger plates. The first heat exchanger plate and the second heat exchanger plate are alternately laminated.
- FIG. 3 is a plan view showing the first heat exchanger plate 21 of one of the plurality of first heat exchanger plates.
- the first heat exchanger plate 21 has a first inflow chamber hole 22, a first outflow chamber hole 23, a second inflow chamber hole 24, and a second outflow chamber hole 25. And are formed.
- the first inflow chamber hole 22, the first outflow chamber hole 23, the second inflow chamber hole 24, and the second outflow chamber hole 25 are respectively from one surface S3 of the first heat exchanger plate 21 to the other. It penetrates the surface S4 of.
- the first heat exchanger plate 21 is further formed with a first heat exchange flow path recess 26, a first inflow flow path recess 27, and a first outflow flow path recess 28 on one surface S3.
- the recess 26 for the first heat exchange flow path is formed substantially in the center of the first heat exchanger plate 21.
- the first inflow channel recess 27 is formed between the first heat exchange channel recess 26 and the first inflow chamber hole 22 and is connected to the first inflow chamber hole 22 to form a first heat exchange channel. It is connected to the edge V1 on the side of the first inflow chamber hole 22 in the recess 26.
- the first outflow flow path recess 28 is formed between the first heat exchange flow path recess 26 and the first outflow chamber hole 23, and is connected to the first outflow chamber hole 23 to form a first heat exchange flow path. It is connected to the edge V2 on the opposite side of the flow direction 29 with respect to the edge V1 connected to the first inflow flow path recess 27 of the recesses 26.
- the flow direction 29 represents the direction in which the first fluid flows as a whole through the recess 26 for the first heat exchange flow path (the traveling direction of the first fluid flowing along the sinusoidal flow path described later), and is perpendicular to the stacking direction 20. That is, it is parallel to the first heat exchanger plate 21.
- FIG. 4 is a plan view showing the second heat exchanger plate 31 of one of the plurality of second heat exchanger plates.
- the second heat exchanger plate 31 has a first inflow chamber hole 32, a first outflow chamber hole 33, a second inflow chamber hole 34, and a second outflow chamber hole 35. And are formed.
- the first inflow chamber hole 32, the first outflow chamber hole 33, the second inflow chamber hole 34, and the second outflow chamber hole 35 are respectively from one surface S5 of the second heat exchanger plate 31 to the other. It penetrates the surface S6 of.
- the first inflow chamber hole 32 is connected to the first inflow chamber hole 22 of the first heat exchanger plate 21 to form the first inflow chamber 14 when a plurality of heat exchanger plates are appropriately laminated.
- the first outflow chamber hole 33 is connected to the first outflow chamber hole 23 of the first heat exchanger plate 21 to form the first outflow chamber 15 when a plurality of heat exchanger plates are appropriately laminated.
- the second inflow chamber hole 34 is connected to the second inflow chamber hole 24 of the first heat exchanger plate 21 to form the second inflow chamber 16 when a plurality of heat exchanger plates are appropriately laminated.
- the second outflow chamber hole 35 is connected to the second outflow chamber hole 25 of the first heat exchanger plate 21 to form the second outflow chamber 17 when a plurality of heat exchanger plates are appropriately laminated.
- the second heat exchanger plate 31 is further formed with a second heat exchange flow path recess 36, a second inflow flow path recess 37, and a second outflow flow path recess 38 on one surface S5.
- the second heat exchange flow path recess 36 overlaps the first heat exchange flow path recess 26 of the first heat exchanger plate 21 in the stacking direction 20 when a plurality of heat exchanger plates are appropriately laminated.
- it is formed in the center of the second heat exchanger plate 31.
- the second inflow channel recess 37 is formed between the second inflow chamber hole 34 and the second heat exchange channel recess 36, and is connected to the second inflow chamber hole 34 to form a second heat exchange channel.
- the second outflow channel recess 38 is formed between the second outflow chamber hole 35 and the second heat exchange channel recess 36, and is connected to the second outflow chamber hole 35 to form a second heat exchange channel. It is connected to the edge V4 on the opposite side of the flow direction 29 with respect to the edge V3 connected to the second inflow flow path recess 37 of the recesses 36.
- the flow direction 29 is the same as the flow direction 29 in FIG. In FIG. 4, the flow direction 29 represents the direction in which the second fluid flows through the second heat exchange flow path recess 36 as a whole (the traveling direction of the second fluid flowing along the sinusoidal flow path described later), and is laminated. It is perpendicular to the direction 20, that is, parallel to the second heat exchanger plate 31. Since the flow directions of the first fluid and the second fluid are reversible, the flow directions 29 are indicated by double-headed arrows in FIGS. 3 and 4.
- FIG. 5 is a plan view showing the recess 26 for the first heat exchange flow path.
- the first heat exchanger plate 21 has a first side wall surface 41, a second side wall surface 42, and a bottom surface 43 due to the formation of the first heat exchange flow path recess 26. Is formed.
- the first side wall surface 41 is formed on one edge of the first heat exchange flow path recess 26 in the span direction 44, and forms a part of the inner wall surface of the first heat exchange flow path recess 26. ..
- the span direction 44 is a direction perpendicular to the stacking direction 20 and perpendicular to the flow direction 29. Further, the span direction 44 is the amplitude direction of the sinusoidal curve 51 described later.
- the first side wall surface 41 is substantially perpendicular to the plane in which the first heat exchanger plate 21 is parallel, that is, is substantially parallel to the stacking direction 20.
- the first side wall surface 41 is formed so as to follow a sinusoidal curve drawn on a plane parallel to the first heat exchanger plate 21.
- the sinusoidal curve along the first side wall surface 41 is equal to the waveform shown by the sinusoidal function, and the amplitude changes periodically and smoothly in the flow direction 29. That is, the sine function is expressed by the following equation (1) using the variable x, the variable y, the amplitude A, and the period T.
- y Asin (2 ⁇ / T ⁇ x) ⁇ ⁇ ⁇ (1)
- the variable x indicates the position in the flow direction 29.
- the variable y indicates the position in the span direction 44.
- the amplitude A is exemplified by a value smaller than 1.0 mm, for example, 0.6 mm. As the period T, 3 mm is exemplified.
- the second side wall surface 42 is formed on the edge opposite to the edge on which the first side wall surface 41 is formed in the recess 26 for the first heat exchange flow path in the span direction 44, and the first heat exchange flow path is formed. It forms a part of the inner wall surface of the recess 26.
- the second side wall surface 42 is substantially perpendicular to the plane along which the first heat exchanger plate 21 is aligned, that is, is substantially parallel to the stacking direction 20.
- the second side wall surface 42 is formed so as to follow a sinusoidal curve drawn on a plane along which the first heat exchanger plate 21 follows.
- the sine curve along the second side wall surface 42 is the same sine curve as the sine curve along the first side wall surface 41.
- the period of the sinusoidal curve along the second side wall surface 42 is equal to the period of the sinusoidal curve along the first side wall surface 41, and the amplitude of the sinusoidal curve along the second side wall surface 42 is such that the first side wall surface 41 has an amplitude. Equal to the amplitude of the sine curve along. Further, the position of the flow direction 29 of the point corresponding to a certain phase in the sinusoidal curve along the second side wall surface 42 is the flow direction 29 of the point corresponding to the phase in the sinusoidal curve along the first side wall surface 41. Is equal to the position of.
- the bottom surface 43 forms a part of the inner wall surface of the first heat exchange flow path recess 26, and includes the first side wall surface 41 and the second side wall surface 42 of the inner wall surface of the first heat exchange flow path recess 26. It forms a surface sandwiched between.
- the bottom surface 43 is formed so that the first heat exchanger plate 21 is parallel to a parallel plane.
- the first heat exchanger plate 21 includes a first partition wall 45, a first side wall 46, a second side wall 47, and a plurality of first flow path walls 48-1 to 48-n (n is a positive integer. Hereinafter, other implementations are performed. In the example, n represents an arbitrary positive integer).
- the first partition wall 45 is a portion that forms the bottom portion of the recess 26 for the first heat exchange flow path, that is, forms the bottom surface 43 of the first heat exchanger plate 21.
- the first side wall 46 is a portion that forms one side wall of the first heat exchange flow path recess 26, that is, forms the first side wall surface 41 of the first heat exchanger plate 21.
- the second side wall 47 is a portion that forms the other side wall of the first heat exchange flow path recess 26, that is, forms the second side wall surface 42 of the first heat exchanger plate 21.
- Each of the plurality of first flow path walls 48-1 to 48-n is arranged inside the first heat exchange flow path recess 26, and is formed in the first partition wall 45 so as to project from the bottom surface 43 in the stacking direction 20. Has been done.
- FIG. 6 is a plan view showing two adjacent flow path walls among the plurality of first flow path walls 48-1 to 48-n.
- One of the plurality of first flow path walls 48-1 to 48-n, the first flow path wall 48-1 is a plane parallel to the first heat exchanger plate 21 as shown in FIG. It is formed so as to follow the sinusoidal curve 51 drawn in.
- the sine curve 51 is the same sine curve as the sine curve along which the first side wall surface 41 or the second side wall surface 42 represented by the equation (1) is along, so that the amplitude changes periodically and smoothly in the flow direction 29. It is formed.
- the period of the sinusoidal curve 51 is equal to the period T of the sinusoidal curve along which the first side wall surface 41 or the second side wall surface 42 follows, and the amplitude of the sinusoidal curve 51 is along the first side wall surface 41 or the second side wall surface 42. Equal to the amplitude A of the sine curve.
- the first flow path wall 48-1 forms a first side flow path wall surface 52 and a second side flow path wall surface 53.
- the first side flow path wall surface 52 is formed on the side of the first side wall 46 of the first flow path wall 48-1.
- the first side flow path wall surface 52 is formed so as to follow a sinusoidal curve (corresponding to the “first sinusoidal curve”) drawn on a plane parallel to the first heat exchanger plate 21.
- the sine curve along which the first side flow path wall surface 52 follows is the same sine curve as the sine curve 51, and the sine curve 51 is placed on the side of the first side wall 46 in the span direction (corresponding to the "amplitude direction of the sine curve 51") 44. It is formed so as to overlap a sinusoidal curve arranged by moving in parallel by an offset value y 0 .
- the offset value y 0 0.1 mm is exemplified.
- the second side flow path wall surface 53 is formed on the side of the second side wall 47 of the first flow path wall 48-1.
- the second side flow path wall surface 53 is formed so as to overlap the sine curve (corresponding to the "second sine curve") in which the sine curve 51 is translated to the side of the second side wall 47 in the span direction 44 by an offset value y 0.
- the first side flow path wall surface 52 and the second side flow path wall surface 53 are substantially perpendicular to the plane along which the first heat exchanger plate 21 is aligned, that is, substantially parallel to the stacking direction 20.
- the portion orthogonal to the curve 51) is narrower than the width w 2 of the portion of the first flow path wall 48-1 that overlaps the maximum point or the minimum point of the sinusoidal curve 51.
- the maximum point of the sinusoidal curve 51 corresponds to the point of the graph of the sinusoidal function corresponding to the phase ⁇ expressed by the following equation (3).
- ⁇ ⁇ / 2 + 2 ⁇ i ...
- the minimum point of the sinusoidal curve 51 corresponds to the point of the graph of the sinusoidal function corresponding to the phase ⁇ expressed by the following equation (4).
- ⁇ 3 ⁇ / 2 + 2 ⁇ i ... (4)
- the adjacent first flow path wall 48-2 arranged on the side of the second side wall 47 of the first flow path wall 48-1 among the plurality of first flow path walls 48-1 to 48-n is the first. It is formed in the same manner as the flow path wall 48-1. That is, the first flow path wall 48-2 is formed along the sinusoidal curve 51, and the first side flow path wall surface 52 and the second side flow path wall surface 53 are formed. Further, in the first flow path wall 48-2, the sine curve 51 along the first flow path wall 48-2 and the sine curve 51 along the first flow path wall 48-1 have only a predetermined pitch P in the span direction 44. It is arranged so as to overlap the parallel moving sine curve. 0.75 mm is exemplified as the pitch P.
- the first flow It is formed in the same manner as the road wall 48-1 and the first flow path wall 48-2. That is, the plurality of first flow path walls 48-1 to 48-n are formed so as to be arranged at equal intervals in the span direction 44 at a pitch P.
- a plurality of grooves are formed in the first heat exchanger plate 21 by forming a plurality of first flow path walls 48-1 to 48-n.
- Each groove 57 is formed between two adjacent first flow path walls among the plurality of first flow path walls 48-1 to 48-n, and is a first side flow of one of the first flow path walls. It is formed between the road wall surface 52 and the second side flow path wall surface 53 of the other first flow path wall.
- the width w 3 of the portion of the sine curve 51 near the inflection point is the sine curve 51. It is formed so as to be narrower than the width w 4 of the portion close to the maximum point or the minimum point of.
- the second heat exchange flow path recess 36 of the second heat exchanger plate 31 is formed in the same manner as the first heat exchange flow path recess 26 of the first heat exchanger plate 21.
- FIG. 7 is an enlarged cross-sectional view taken along the line AA of FIG.
- the second heat exchanger plate 31 includes a second partition wall 61 and a plurality of second flow path walls 62-1 to 62-n.
- the second partition wall 61 forms the bottom portion of the recess 36 for the second heat exchange flow path, like the first partition wall 45 of the first heat exchanger plate 21, that is, the bottom surface parallel to the second heat exchanger plate 31.
- the plurality of second flow path walls 62-1 to 62-n are recesses for the second heat exchange flow path, similarly to the plurality of first flow path walls 48-1 to 48-n of the first heat exchanger plate 21. It is arranged inside the 36 and is formed on the second partition wall 61 so as to project from the bottom surface 63 in the stacking direction 20.
- the plurality of second flow path walls 62-1 to 62-n are further formed so as to have the same shape as the plurality of first flow path walls 48-1 to 48-n of the first heat exchanger plate 21.
- the second heat exchanger plate 31 further comprises two side walls (not shown).
- the two side walls are formed at both ends of the recess 36 for the second heat exchange flow path in the span direction 44, respectively, like the first side wall 46 and the second side wall 47 of the first heat exchanger plate 21.
- Two side wall surfaces excluding the bottom surface 63 of the inner wall surface of the heat exchange flow path recess 36 are formed.
- one surface S3 of the first heat exchanger plate 21 is joined to the other surface S6 of the second heat exchanger plate 31, and one surface S5 of the second heat exchanger plate 31 is joined.
- the laminated body 10 is formed by joining a plurality of heat exchanger plates to each other in a state where the first heat exchanger plate 21 and the second heat exchanger plate 31 are alternately laminated in this way.
- the plurality of second flow path walls 62-1 to 62-n are arranged in the stacking direction 20 on the plurality of first flow path walls 48-1 to 48-n when the plurality of heat exchanger plates are appropriately laminated.
- the crown S7 of the plurality of first flow path walls 48-1 to 48-n is joined to the other surface S6 of the second partition wall 61, and the crown portions of the plurality of second flow path walls 62-1 to 62-n are joined.
- S8 is joined to the other surface S4 of the first partition wall 45.
- the second heat exchanger plate 31 is when a plurality of heat exchanger plates are appropriately laminated. It is formed so as to overlap each of the two side walls in the stacking direction 20.
- a plurality of first spaces 67 and a plurality of second spaces 68 are formed by laminating a plurality of heat exchanger plates.
- the first space 67 is the inside of the recess 26 for the first heat exchange flow path of the first heat exchanger plate 21, and is a space formed between the first partition wall 45 and the second partition wall 61.
- the plurality of first flow path walls 48-1 to 48-n divide the first space 67 inside the first heat exchange flow path recess 26 into the plurality of first flow paths 65.
- the plurality of first flow paths 65 include a plurality of flow paths surrounded by the plurality of first flow path walls 48-1 to 48-n, the first partition wall 45, and the second partition wall 61.
- the plurality of first flow paths 65 further include a flow path surrounded by the first side wall 46, one flow path wall 48-1, the first partition wall 45, and the second partition wall 61, and a second. It includes a side wall 47, one flow path wall 48-n, and a flow path surrounded by a first partition wall 45 and a second partition wall 61.
- the second space 68 is the inside of the second heat exchange flow path recess 36 of the second heat exchanger plate 31, and is a space formed between the first partition wall 45 and the second partition wall 61.
- the plurality of second flow path walls 62-1 to 62-n are the second space 68 inside the second heat exchange flow path recess 36, similarly to the plurality of first flow path walls 48-1 to 48-n. Is divided into a plurality of second flow paths 66.
- the plurality of second flow paths 66 include a plurality of flow paths surrounded by the plurality of second flow path walls 62-1 to 62-n, the first partition wall 45, and the second partition wall 61.
- the plurality of second flow paths 66 further include one of the two side walls, one of the plurality of second flow path walls 62-1 to 62-n, and the first partition wall 45. And the flow path surrounded by the second partition wall 61, the other of the two side walls, one of the plurality of second flow path walls 62-1 to 62-n, the first partition wall 45, and the second partition wall. It includes a flow path surrounded by 61.
- the first flow path 65 and the second flow path 66 form a sinusoidal flow path in which the fluid flows in the flow direction 29 as the traveling direction while repeatedly vibrating in the span direction 44.
- the width of the groove 57 formed between the first side flow path wall surface 52 and the second side flow path wall surface 53 of the first flow path 65 differs depending on the position along the flow path.
- the cross-sectional area differs depending on the position along the flow path. Similar to the first flow path 65, the cross-sectional area of the second flow path 66 also differs depending on the position.
- the cross-sectional area of the first flow path 65 and the second flow path 66 periodically expands and contracts depending on the position along each flow path.
- the first flow path 65 is formed so that the following equation (5) is established by using the minimum first flow path width Wc1 and the first flow path wall height H1. 2.5 ⁇ Wc1 / H1 ⁇ 6 ... (5)
- the minimum first flow path width Wc1 is the minimum value of the interval between the plurality of first flow path walls 48-1 to 48-n, and among the plurality of first flow path walls 48-1 to 48-n. Indicates the minimum value of the distance between two adjacent flow path walls, that is, the minimum value of the width of the first flow path 65.
- the first flow path wall height H1 indicates the distance between the first partition wall 45 and the second partition wall 61, indicates the depth of the first heat exchange flow path recess 26, and a plurality of first flow path walls 48-1.
- the second flow path 66 is formed so that the following equation (6) is established by using the minimum second flow path width Wc2 and the second flow path wall height H2. 2.5 ⁇ Wc2 / H2 ⁇ 6 ... (6)
- the minimum second flow path width Wc2 is the minimum value of the interval between the plurality of second flow path walls 62-1 to 62-n, and is among the plurality of second flow path walls 62-1 to 62-n. Indicates the minimum value of the distance between two adjacent flow path walls, that is, the minimum value of the width of the second flow path 66.
- the second flow path wall height H2 indicates the distance between the first partition wall 45 and the second partition wall 61, indicates the depth of the second heat exchange flow path recess 36, and a plurality of second flow path walls 62-1. It shows the height of about 62-n, that is, the height of the second flow path 66 in the stacking direction 20.
- Wc1 / H1 and Wc2 / H2 are smaller than 6, sufficient strength is secured against the pressure of the flowing fluid, and the first fluid flows through the plurality of first flow paths 65.
- the first partition wall 45 and the second partition wall 61 are prevented from bending due to the pressure of the respective fluids.
- Wc1 / H1 and Wc2 / H2 are larger than 2.5 and smaller than 6, so that the first fluid and the second fluid and the first partition 45 and the second partition 61 It is possible to suppress a decrease in heat transfer performance between heat transfer and suppress a decrease in pressure resistance performance. Tune these design parameters according to the operating conditions of the working fluid.
- the partition wall heat exchanger 1 is further formed so that the hydraulic diameter of the first flow path 65 is 0.3 mm or less and the hydraulic diameter of the second flow path 66 is 0.3 mm or less. ing. Further, at this time, the amplitude A of the sinusoidal curve along the first side flow path wall surface 52 and the second side flow path wall surface 53 shows a magnitude smaller than 1.0 mm, and for example, 0.6 mm is exemplified. As the period T of the sinusoidal curve, 3 mm is exemplified. By forming the partition wall heat exchanger 1 in this way, high heat exchange performance between the first fluid and the second fluid can be obtained. At this time, the first fluid and the second fluid are, for example, one is water and the other is a refrigerant (example: R410A, R32, R290).
- the partition type heat exchanger 1 since the first side flow path wall surface 52 and the second side flow path wall surface 53 follow a simple sinusoidal curve, a plurality of first flow paths 65 and a plurality of first flow paths 65 and a plurality of first channels have a small number of parameters.
- a computer simulation for determining the shape of the two flow paths 66 can be performed. Examples of the parameters include period T, amplitude A, offset value y 0 , and pitch P.
- the partition type heat exchanger 1 reduces the amount of computer calculation when executing a computer simulation because the number of parameters that determine the shapes of the plurality of first flow paths 65 and the plurality of second flow paths 66 is small. However, the time required for computer simulation can be shortened. Therefore, the partition wall type heat exchanger 1 optimizes the shapes of the plurality of first flow path walls 48-1 to 48-n and the plurality of second flow path walls 62-1 to 62-n by computer simulation. The work can be facilitated.
- the first heat exchanger plate 21 and the second heat exchanger plate 31 are manufactured by etching a metal plate.
- the thickness of this metal plate is exemplified by 0.3 mm.
- the plurality of heat exchanger plates are joined to each other together with the first end plate 11 and the second end plate 12, for example, by diffusion bonding.
- the first inflow chamber hole 22 of the first heat exchanger plate 21 and the first inflow chamber hole 32 of the second heat exchanger plate 31 are a plurality of the first end plate 11 and the second end plate 12.
- first outflow chamber hole 23 of the first heat exchanger plate 21 and the first outflow chamber hole 33 of the second heat exchanger plate 31 form the first outflow chamber 15.
- the second inflow chamber hole 24 of the first heat exchanger plate 21 and the second inflow chamber hole 34 of the second heat exchanger plate 31 form a second inflow chamber 16.
- the second outflow chamber hole 25 of the first heat exchanger plate 21 and the second outflow chamber hole 35 of the second heat exchanger plate 31 form a second outflow chamber 17.
- the first outflow hole 18, the second outflow hole 19, the first inflow hole, and the second inflow hole are formed by joining the first end plate 11, the second end plate 12, and a plurality of laminated heat exchanger plates to each other. After that, it is formed by machining.
- the first inflow pipe 5, the first outflow pipe 6, the second inflow pipe 7, and the second outflow pipe 8 are in the first inflow hole, the first outflow hole 18, the second inflow hole, and the second outflow hole 19, respectively. After being inserted, it is fixed to the heat exchanger body 2 by welding, for example.
- the first fluid flows into the first inflow chamber 14 through the first inflow pipe 5. After flowing into the first inflow chamber 14, the first fluid is distributed to each of the plurality of first heat exchanger plates 21 and flows into the first inflow flow path recess 27 formed in the first heat exchanger plate 21. To do. After the first fluid flows into the first inflow flow path recess 27, the width of the flow is changed from the width of the first inflow chamber 14 to the width of the first heat exchange flow path recess 26 by the first inflow flow path recess 27. It flows into a plurality of first flow paths 65 formed in the recess 26 for the first heat exchange flow path.
- the flow direction changes in a sinusoidal shape because the first side flow path wall surface 52 and the second side flow path wall surface 53 follow a sinusoidal curve.
- the direction in which the first fluid flows changes more rapidly than the other parts.
- the width of the flow path wall is formed at a portion of the plurality of first flow path walls 48-1 to 48-n that overlaps with the maximum point or the minimum point of the sinusoidal curve as compared with the other parts. ..
- the strength against the stress received from the first fluid is larger than that of the other portion, and a sufficient strength against the large stress can be secured as compared with the other portion.
- the cross-sectional area of the plurality of first flow paths 65 differs depending on the position in the flow direction along the flow paths, so that the flow speed is increased. Change.
- the flow direction changes in a sinusoidal shape, and the flow speed changes, so that the first fluid is constantly locally disturbed.
- the partition type heat exchanger 1 reduces the thermal resistance of heat transfer between the first fluid and the first partition 45 by constantly disturbing the first fluid locally, and the first fluid and the second partition 45. The thermal resistance of heat transfer to and from 61 can be reduced.
- the second fluid further flows into the second inflow chamber 16 via the second inflow pipe 7.
- the second fluid is distributed to each of the plurality of second heat exchanger plates 31 and flows into the second inflow flow path recess 37 formed in the second heat exchanger plate 31.
- the width of the flow is changed from the width of the second inflow chamber 16 to the width of the second heat exchange flow path recess 36 by the second inflow flow path recess 37. It flows into a plurality of second flow paths 66 formed in the recess 36 for the second heat exchange flow path.
- the second fluid as a whole flows in the flow direction 29 from the first inflow chamber 14 toward the first outflow chamber 15, whereas the first fluid as a whole flows in the direction opposite to the direction in which the first fluid flows.
- the fluid flows in the flow direction 29 from the first outflow chamber 15 side toward the first inflow chamber 14 side. That is, the partition type heat exchanger 1 is a so-called countercurrent heat exchanger.
- the flow direction changes in a sinusoidal shape because the first side flow path wall surface 52 and the second side flow path wall surface 53 follow a sinusoidal curve.
- the direction in which the second fluid flows changes more rapidly than the other parts.
- the width of the flow path wall is formed at a portion of the plurality of second flow path walls 62-1 to 62-n that overlaps with the maximum point or the minimum point of the sinusoidal curve as compared with the other portions.
- the cross-sectional area of the plurality of second flow paths 66 differs depending on the position in the flow direction along the flow paths, so that the flow speed is increased. Change.
- the partition type heat exchanger 1 reduces the thermal resistance of heat transfer between the second fluid and the first partition 45 by constantly disturbing the second fluid locally, and the second fluid and the second partition 45.
- the thermal resistance of heat transfer to and from 61 can be reduced.
- the partition type heat exchanger 1 is located between the first fluid and the second fluid by reducing the thermal resistance of heat transfer between the first fluid and the second fluid and the first partition 45 and the second partition 61. The performance of the heat exchange performed in the above can be improved.
- the first fluid flows into the first outflow flow path recess 28 after flowing through the plurality of first flow paths 65.
- the width of the flow is changed from the width of the first heat exchange flow path recess 26 to the width of the first outflow chamber 15 by the first outflow flow path recess 28. It is narrowed down to and flows into the first outflow chamber 15.
- the first outflow chamber 15 merges the first fluids that have flowed in from the plurality of first heat exchanger plates 21 through the recesses 28 for the first outflow flow path.
- the first fluid merged in the first outflow chamber 15 flows out to the outside through the first outflow pipe 6.
- the second fluid flows into the second outflow flow path recess 38 after flowing through the plurality of second flow paths 66.
- the width of the flow is changed from the width of the second heat exchange flow path recess 36 to the width of the second outflow chamber 17 by the second outflow flow path recess 38. It is narrowed down to and flows into the second outflow chamber 17.
- the second outflow chamber 17 merges the second fluids supplied from the plurality of second heat exchanger plates 31 via the second outflow flow path recess 38.
- the second fluid merged in the second outflow chamber 17 flows out to the outside through the second outflow pipe 8.
- the partition wall type heat exchanger 1 of the first embodiment includes a first partition wall 45 (corresponding to the “first partition wall”), a second partition wall 61 (corresponding to the “second partition wall”), and a plurality of first flow path walls 48. It has -1 to 48-n.
- the plurality of first flow path walls 48-1 to 48-n form a plurality of first spaces 67 inside the first heat exchange flow path recess 26 formed between the first partition wall 45 and the second partition wall 61. It is divided into the first flow path 65 of.
- the first partition wall 45 and the second partition wall 61 have a plurality of first flow paths 65 from a plurality of second flow paths 66 through which a second fluid different from the first fluid flowing through the plurality of first flow paths 65 flows.
- Each of the plurality of first flow path walls 48-1 to 48-n is formed along a sinusoidal curve.
- the plurality of first flow path walls 48-1 to 48-n form a plurality of first side flow path wall surfaces 52 and a plurality of second side flow path wall surfaces 53, each of which follows a different sinusoidal curve.
- a plurality of first side flow path walls 52 and a plurality of second side flow path wall surfaces 53 along a sine curve are formed, so that the plurality of first side flow paths 65
- the direction in which the first fluid flowing through the water flows can be changed in a sinusoidal manner.
- a plurality of first side flow path wall surfaces 52 and a plurality of second side flow path wall surfaces 53 along a sine curve are formed, so that the plurality of first side flow paths 65 are further formed.
- the width can be varied along the direction in which the first fluid flows.
- the cross-sectional area of the plurality of first flow paths 65 can be changed by changing the width of the plurality of first flow paths 65, and the first flow path 65 flows through the plurality of first flow paths 65. 1
- the speed of the fluid can be changed.
- the partition wall heat exchanger 1 locally moves the first fluid flowing through the plurality of first flow paths 65 by changing the direction in which the first fluid flows and by changing the speed of the first fluid. It can be disturbed at all times.
- the partition type heat exchanger 1 reduces the thermal resistance of heat transfer between the first fluid and the first partition 45 by constantly locally disturbing the first fluid flowing through the plurality of first flow paths 65. It is possible to reduce the thermal resistance of heat transfer between the first fluid and the second partition wall 61.
- the partition type heat exchanger 1 improves the heat transfer performance when heat is exchanged between the first fluid and the second fluid flowing through the plurality of second flow paths 66 by reducing the thermal resistance. be able to.
- the partition type heat exchanger 1 when the behavior of the first fluid is computer-simulated by the plurality of first side flow path wall surfaces 52 and the plurality of second side flow path wall surfaces 53 each following a simple sine curve. , It is possible to facilitate input / change of the shapes of the plurality of first flow paths 65, and to reduce the calculation load of the computer. As a result, the partition wall heat exchanger 1 can facilitate the work of optimizing the shapes of the plurality of first flow path walls 48-1 to 48-n.
- the partition wall type heat exchanger 1 of the first embodiment has a first side wall 46 on which the first side wall surface 41 formed at the end of the first space 67 inside the recess 26 for the first heat exchange flow path is formed. Further prepared. At this time, the first side wall surface 41 is formed so as to follow the same sine curve as the sine curve along which the plurality of first side flow path wall surfaces 52 and the plurality of second side flow path wall surfaces 53 follow.
- the period of the sinusoidal curve along the first side wall surface 41 is equal to the period of the sinusoidal curve along with the plurality of first side flow path wall surfaces 52 and the plurality of second side flow path wall surfaces 53, and the first side wall surface 41
- the amplitude of the along sine curve is equal to the amplitude of the sine curve along which the plurality of first side flow path wall surfaces 52 and the plurality of second side flow path wall surfaces 53 follow.
- the first flow path wall 48-1 and the first flow path wall 48-1 and the first flow path wall 48-1 are similar to the first fluid flowing through the flow path sandwiched between the plurality of first flow path walls 48-1 to 48-n.
- the first fluid flowing through the flow path formed between the side wall surface 41 and the side wall surface 41 can be locally and constantly disturbed.
- the partition type heat exchanger 1 further improves the heat transfer performance when heat exchange is performed between the first fluid and the second fluid by constantly disturbing the first fluid locally. Can be done.
- the minimum first flow path width Wc1 which is the minimum value of the interval between the plurality of first flow path walls 48-1 to 48-n of the partition wall type heat exchanger 1 of the first embodiment is set to the first partition wall 45 and the second.
- the value Wc1 / H1 divided by the height H1 of the first flow path wall, which is the distance from the partition wall 61, is larger than 2.5 and smaller than 6.
- Wc1 / H1 since Wc1 / H1 is smaller than 6, the strength between the first partition 45 and the second partition 61 is secured, and the first fluid flows through the plurality of first flow paths 65. Occasionally, the first partition 45 and the second partition 61 are prevented from bending due to the pressure of the fluid.
- Wc1 / H1 is larger than 2.5 and smaller than 6, thereby suppressing deterioration of heat transfer performance between the first fluid and the first partition 45 and the second partition 61. Moreover, it is possible to suppress a decrease in pressure resistance performance.
- the second flow path walls 62-1 to 62-n are also formed in the same manner as the plurality of first flow path walls 48-1 to 48-n, so that the partition wall type heat exchanger 1 is a second fluid. It is possible to suppress a decrease in heat transfer performance between the first partition wall 45 and the second partition wall 61, and to secure the strength between the first partition wall 45 and the second partition wall 61.
- the partition wall heat exchanger of the second embodiment has a plurality of first flow path walls 48-1 to 48-n of the partition wall heat exchanger 1 of the first embodiment described above.
- a plurality of odd-numbered flow path walls 71-1 to 71-n1 (n1 is a positive integer; hereinafter, n1 represents an arbitrary positive integer in other embodiments) and a plurality of even-numbered flow path walls 72-1 to 72-1 to It has been replaced with 72-n2 (n2 is a positive integer; hereinafter, n2 represents an arbitrary positive integer in other embodiments).
- FIG. 8 is a plan showing a plurality of odd-numbered flow path walls 71-1 to 71-n1 and a plurality of even-numbered flow path walls 72-1 to 72-n2 formed in the partition wall heat exchanger of the second embodiment. It is a figure.
- One of the plurality of odd-numbered flow path walls 71-1 to 71-n1 has the odd-numbered flow path wall 71-1 along the sinusoidal curve 51, similarly to the first flow path wall 48-1 described above. Is formed in.
- other odd-numbered flow path walls different from the odd-numbered flow path wall 71-1 also have a sinusoidal curve like the odd-numbered flow path wall 71-1. It is formed along 51.
- the even-numbered flow path wall 72-1 of the plurality of even-numbered flow path walls 72-1 to 72-n2 follows the sinusoidal curve 51 in the same manner as the first flow path wall 48-2 described above. Is formed in. Of the plurality of even-numbered flow path walls 72-1 to 72-n2, other even-numbered flow path walls different from the even-numbered flow path wall 72-1 are also sinusoidal curves like the even-numbered flow path wall 72-1. It is formed along 51.
- One of a plurality of even-numbered flow path walls 72-1 to 72-n2 is located between two adjacent odd-numbered flow path walls among the plurality of odd-numbered flow path walls 71-1 to 71-n1. Even numbered flow path walls are arranged.
- An odd numbered flow path wall is arranged. That is, the plurality of odd-numbered flow path walls 71-1 to 71-n1 and the plurality of even-numbered flow path walls 72-1 to 72-n2 are in the span direction (corresponding to the "amplitude direction of the sinusoidal curve 51") 44. They are lined up alternately.
- the odd-numbered flow path wall 71-1 has a plurality of odd-numbered notch portions 73 formed in the first flow path wall 48-1 without a flow path wall, and the odd-numbered flow path wall 71-1 has the plurality of odd-numbered channels. It is divided into a plurality of odd-numbered flow path wall elements 74-1 to 74-m1 (m1 is a positive integer. Hereinafter, m1 represents an arbitrary positive integer in other embodiments) by the number notch portion 73. ..
- the plurality of odd-numbered notch portions 73 are periodically formed in the odd-numbered flow path wall 71-1 for each cycle T.
- a plurality of odd-numbered flow path walls 71-1 to 71-n1 that are different from the odd-numbered flow path wall 71-1 are also present.
- the odd-numbered notch portion 73 is formed, and is divided into a plurality of odd-numbered flow path wall elements 74-1 to 74-m1.
- the even-numbered flow path wall 72-1 has a plurality of even-numbered notches 75 having no flow path wall formed in the first flow path wall 48-2, and the even-numbered flow path wall 72-1 has the plurality of even-numbered flow path walls 72-1. It is divided into a plurality of even numbered flow path wall elements 76-1 to 76-m2 (m2 is a positive integer.
- m2 represents an arbitrary positive integer in other embodiments) by the number notch portion 75.
- the “notch portion” indicates both a plurality of odd-numbered notch portions 73 and a plurality of even-numbered notch portions 75.
- the plurality of even-numbered notches 75 are periodically formed in the even-numbered flow path wall 72-1 for each period T. Similar to the even-numbered flow path wall 72-1, a plurality of even-numbered flow path walls 72-1 to 72-n2 different from the even-numbered flow path wall 72-1 are also present.
- the even-numbered notch portion 75 is formed, and is divided into a plurality of even-numbered flow path wall elements 76-1 to 76-m2.
- FIG. 9 schematically shows a plurality of odd-numbered flow path walls 71-1 to 71-n1 and a plurality of even-numbered flow path walls 72-1 to 72-n2 formed in the partition wall heat exchanger of the second embodiment. It is explanatory drawing shown in.
- the odd-numbered flow path wall element 74-1 of one of the plurality of odd-numbered flow path wall elements 74-1 to 74-m1 of the odd-numbered flow path wall 71-1 is as shown in FIG.
- the phase of the sinusoidal curve 51 along the odd-numbered flow path wall 71-1 is formed so as to overlap the portion corresponding to the range of 240 ° from ⁇ / 3 to 5 ⁇ / 3.
- the odd-numbered flow path wall element 74-1 is formed so as to overlap the portion of the sine curve 51 whose phase is ⁇ / 2 and the portion where the phase is 3 ⁇ / 2, and the maximum point and the minimum point of the sine curve 51. It is formed so as to overlap the parts corresponding to each of the above.
- other odd-numbered flow path wall elements different from the odd-numbered flow path wall element 74-1 are also referred to as the odd-numbered flow path wall element 74-1.
- the phase of the sinusoidal curve 51 along the odd-numbered flow path wall 71-1 overlaps the portion corresponding to the 240 ° range from ⁇ / 3 + 2 ⁇ i to 5 ⁇ / 3 + 2 ⁇ i. It is formed.
- One of the plurality of odd-numbered notches 73 has a shape in which the portion of the sinusoidal curve 51 whose phase corresponds to the range of 120 ° from 5 ⁇ / 3 to 7 ⁇ / 3 is removed. Is formed in.
- the odd-numbered notch portion 73 formed in this way includes a portion of the sinusoidal curve 51 having a phase of 2 ⁇ , that is, includes an inflection point of the sinusoidal curve 51.
- the portion of the sinusoidal curve 51 whose phase is 2 ⁇ i is included so as to overlap the inflection point of the sinusoidal curve 51. It is formed.
- the plurality of odd-numbered flow path walls 71-1 do not overlap the inflection points of the sinusoidal curve 51 whose phase is 2 ⁇ i so that the plurality of odd-numbered flow path wall elements 74-1 to 74-m1 do not overlap.
- a plurality of odd-numbered notches 73 are formed.
- Other odd-numbered flow path walls different from the odd-numbered flow path wall 71-1 among the plurality of odd-numbered flow path walls 71-1 to 71-n1 are also formed in the same manner as the odd-numbered flow path wall 71-1. ing.
- the even-numbered flow path wall element 76-1 of one of the plurality of even-numbered flow path wall elements 76-1 to 76-m2 of the even-numbered flow path wall 72-1 has a phase of 4 ⁇ / in the sinusoidal curve 51. It is formed so as to overlap the portion corresponding to the range of 240 ° from 3 to 8 ⁇ / 3. That is, the even-numbered flow path wall element 76-1 is formed so as to overlap the portion of the sinusoidal curve 51 having a phase of 3 ⁇ / 2 and the portion having a phase of 5 ⁇ / 2, and the maximum point and the minimum point of the sinusoidal curve 51. It is formed so as to overlap the parts corresponding to each of the above.
- even-numbered flow path wall element 76-1 Of the plurality of even-numbered flow path wall elements 76-1 to 76-m2, other even-numbered flow path wall elements different from the even-numbered flow path wall element 76-1 are also referred to as the even-numbered flow path wall element 76-1.
- the phase of the sinusoidal curve 51 along which the even-numbered flow path wall 72-1 follows is formed so as to overlap the portion corresponding to the range of 240 ° from 4 ⁇ / 3 + 2 ⁇ i to 8 ⁇ / 3 + 2 ⁇ i.
- One of the plurality of even-numbered notches 75 is formed in a shape obtained by removing the portion of the sinusoidal curve 51 whose phase corresponds to the range of 120 ° from 2 ⁇ / 3 to 4 ⁇ / 3. Will be done.
- the notch portion formed in this way is formed so as to include a portion of the sinusoidal curve 51 having a phase of ⁇ , that is, includes an inflection point of the sinusoidal curve 51.
- the portion of the sinusoidal curve 51 whose phase corresponds to the range of 120 ° from 2 ⁇ / 3 + 2 ⁇ i to 4 ⁇ / 3 + 2 ⁇ i is included.
- a plurality of even-numbered notches 75 are formed.
- Other even-numbered flow path walls different from the even-numbered flow path walls 72-1 among the plurality of even-numbered flow path walls 72-1 to 72-n2 are also formed in the same manner as the even-numbered flow path walls 72-1. ing.
- FIG. 10 is a plan view showing an example of the odd-numbered flow path wall element 74-1.
- the odd-numbered flow path wall element 74-1 includes a head 77 and a tail 78, as shown in FIG.
- the head 77 forms one end 79 (corresponding to "the end adjacent to the notch") of the flow direction 29 of the odd-numbered flow path wall elements 74-1 and is adjacent to one odd-numbered notch 73. doing.
- the head 77 is formed so as to narrow toward one end 79 of the odd-numbered flow path wall element 74-1, that is, the width gradually decreases as it approaches one end 79 of the odd-numbered flow path wall element 74-1. It is formed to be.
- the tail 78 forms the other end 80 (corresponding to the "end adjacent to the notch") on the opposite side of one end 79 on which the head 77 of the odd-numbered flow path wall element 74-1 is formed. It is adjacent to two odd-numbered notches 73.
- the tail 78 is formed so as to taper toward the other end 80 of the flow direction 29 of the odd-numbered flow path wall element 74-1, that is, as it approaches the other end 80 of the odd-numbered flow path wall element 74-1. It is formed so that the width is gently reduced.
- Other flow path wall elements different from the odd-numbered flow path wall elements 74-1 among the plurality of odd-numbered flow path wall elements 74-1 to 74-m1 are also formed in the same manner as the odd-numbered flow path wall elements 74-1. Has been done.
- the plurality of even-numbered flow path wall elements 76-1 to 76-m2 are formed in the same manner as the plurality of odd-numbered flow path wall elements 74-1 to 74-m1, and the plurality of even-numbered flow path wall elements 76-1 to 76-1 to Each of the 76-m2 is formed from one that is mirror-symmetric with the odd-numbered channel wall element 74-1. As a result, for example, a portion where the odd-numbered flow path wall elements adjacent to each other in the span direction 44 and the ends of the even-numbered flow path wall elements overlap each other in the span direction is formed. In FIG.
- this overlapping portion is a portion in which the phase of each end of the even-numbered flow path wall element and the odd-numbered flow path wall element is in the range of 60 °.
- the second heat exchanger plate of the partition type heat exchanger of the second embodiment is a plurality of second flow path walls 62-of the second heat exchanger plate 31 of the partition type heat exchanger 1 of the first embodiment. 1 to 62-n are formed by being replaced with a plurality of odd-numbered flow path walls 71-1 to 71-n1 and a plurality of even-numbered flow path walls 72-1 to 72-n2. ..
- the partition type heat exchanger of the second embodiment is similar to the partition type heat exchanger 1 of the first embodiment described above, in which the first fluid flows through a plurality of first flow paths and the second fluid flows through a plurality of second streams. It flows through the path and exchanges heat between the first fluid and the second fluid. Similar to the partition wall heat exchanger 1 of the first embodiment described above, the partition wall heat exchanger of the second embodiment can locally and constantly disturb the first fluid and the second fluid, and the first fluid can be disturbed locally. The heat transfer performance of heat exchange between and the second fluid can be improved.
- the wall surfaces of the plurality of odd-numbered flow path walls 71-1 to 71-n1 and the plurality of even-numbered flow path walls 72-1 to 72-n2 follow a sinusoidal curve. Similar to the partition wall heat exchanger 1 of the first embodiment described above, the shapes of the plurality of odd-numbered flow path walls 71-1 to 71-n1 and the plurality of even-numbered flow path walls 72-1 to 72-n2. The work of optimizing can be facilitated.
- the partition wall heat exchanger of the second embodiment has the same as the partition wall heat exchanger of the first embodiment described above because the plurality of odd-numbered notches 73 and the plurality of even-numbered notches 75 are formed. In comparison, the frictional resistance when the first fluid flows through the plurality of first channels is reduced, resulting in a reduction in pressure loss.
- a so-called front edge effect is generated by forming a plurality of odd-numbered notches 73 and a plurality of even-numbered notches 75, and the partition wall type according to the first embodiment described above.
- the heat transfer coefficient between the first fluid and the first partition wall 45 and the second partition wall 61 can be improved.
- the sinusoidal flow of the fluid is a plurality of odd-numbered flow path wall elements 74, which are the portions where the centrifugal force acting on the flowing fluid is large before and after the maximum point of the sinusoidal curve 51 of the flow path wall or the part overlapping the minimum point. It is mainly formed by -1 to 74-m1 and a plurality of even-numbered flow path wall elements 76-1 to 76-m2. Therefore, even if a plurality of odd-numbered notches 73 and a plurality of even-numbered notches 75 are formed as a shape that overlaps the inflection point of the sinusoidal curve 51 and removes a portion having a small centrifugal force acting on the flowing fluid, it is sinusoidal. The flow of is not disturbed. By providing such a notch, it is possible to reduce the frictional resistance due to the flow path wall when the fluid flows through the flow path while maintaining the sinusoidal flow.
- Each of the plurality of flow path walls of the partition wall heat exchanger of the second embodiment is divided into a plurality of flow path wall elements by forming a plurality of notches for each period of the sinusoidal curve.
- the plurality of notches show both the plurality of odd-numbered notches 73 and the plurality of even-numbered notches 75. That is, in each of the plurality of odd-numbered flow path walls 71-1 to 71-n1, the plurality of odd-numbered flow path wall elements 74 are formed by forming the plurality of odd-numbered notch portions 73 for each period of the sinusoidal curve. It is divided into -1 to 74-m1.
- the plurality of odd-numbered notch portions 73 overlap with the inflection points of the sinusoidal curve 51.
- the maximum point and the minimum point of the sinusoidal curve 51 overlap each other on the wall surface formed on the plurality of odd-numbered flow path wall elements 74-1 to 74-m1.
- Each of the plurality of even-numbered flow path walls 72-1 to 72-n2 has a plurality of even-numbered flow path wall elements 76-1 due to the formation of the plurality of even-numbered notch portions 75 for each period of the sinusoidal curve. It is divided into ⁇ 76-m2.
- the plurality of even-numbered notches 75 overlap the inflection points of the sinusoidal curve 51.
- the maximum point and the minimum point of the sinusoidal curve 51 overlap each other on the wall surface formed on the plurality of even-numbered flow path wall elements 76-1 to 76-m2.
- a plurality of odd-numbered notches 73 are formed in the plurality of odd-numbered flow path walls 71-1 to 71-n1, so that a plurality of odd-numbered notches 73 flow when the first fluid flows.
- the frictional force received from the odd-numbered flow path walls 71-1 to 71-n1 can be reduced.
- the partition wall heat exchanger of the second embodiment has a plurality of odd-numbered flow path walls by reducing the frictional force acting between the plurality of odd-numbered flow path walls 71-1 to 71-n1 and the first fluid. It is possible to reduce the flow resistance of the plurality of first flow paths formed between 71-1 and 71-n1.
- the working fluid is adjacent to the edge (adjacent to the notch portion) of the flow path wall element. It provides an opportunity to contact the head 77 and the tail 78, which are the ends) to generate the so-called front edge effect, and improve the heat transfer coefficient between the first fluid and the first partition wall 45 and the second partition wall 61. be able to.
- the plurality of odd-numbered flow path wall elements 74-1 to 74-m1 of the partition wall heat exchanger of the second embodiment are formed so that the width gradually decreases as they approach the end.
- the width of the head 77 and the tail 78 of the plurality of odd-numbered flow path wall elements 74-1 to 74-m1 gradually becomes smaller as they approach the ends. It is possible to reduce the shape loss due to the plurality of odd-numbered flow path wall elements 74-1 to 74-m1 when one fluid flows.
- the shape loss referred to here is a loss that the working fluid receives depending on the shape of the flow path wall surface. If the shape of the flow path wall surface is not gentle, the shape loss to the working fluid due to friction or collision with the flow path wall surface becomes large.
- the plurality of odd-numbered flow path wall elements 74-1 to 74-m1 and the plurality of even-numbered flow path wall elements 76-1 to 76-m2 of the partition wall heat exchanger of the second embodiment are arranged in the span direction 44.
- a portion is formed in which the ends of adjacent objects overlap each other in the span direction 44.
- the heat transfer coefficient between the first fluid and the first partition wall 45 and the second partition wall 61 can be improved. As a result, it is formed by providing local constant disturbance of the fluid due to periodic changes in the widths of the flow path walls 71-1 to 71-n1 and 72-1 to 72-n2, and providing notches 73 and 75.
- Flow path wall Flow path wall elements 74-1 to 74-m1, 76-1 to 76-m2 combined with the front edge effect, further transfer compared to the partition wall heat exchanger of Example 1 described above. The thermal performance can be improved.
- the partition wall heat exchanger of the third embodiment includes a plurality of odd-numbered flow path walls 71-1 to 71-n1 of the partition wall heat exchanger of the second embodiment described above.
- the plurality of odd-numbered flow path walls 81-1 to 81-n1 are replaced, and the plurality of even-numbered flow path walls 72-1 to 72-n2 are replaced by a plurality of other even-numbered flow path walls 82-1 to 82-n2.
- FIG. 11 is a plan showing a plurality of odd-numbered flow path walls 81-1 to 81-n1 and a plurality of even-numbered flow path walls 82-1 to 82-n2 formed in the partition wall heat exchanger of the third embodiment. It is a figure.
- the plurality of odd-numbered flow path walls 81-1 to 81-n1 and the plurality of even-numbered flow path walls 82-1 to 82-n2 are the plurality of odd-numbered flow path walls 71-1 to 71-n1 described above. Similar to the plurality of even-numbered flow path walls 72-1 to 72-n2, the recesses 26 for the first heat exchange flow path are formed, and one of them is in the span direction (corresponding to the “amplitude direction of the sinusoidal curve 51”). It is formed so as to overlap one of a plurality of sinusoidal curves 51 arranged at a predetermined pitch P on 44.
- the plurality of odd-numbered flow path walls 81-1 to 81-n1 and the plurality of even-numbered flow path walls 82-1 to 82-n2 are alternately arranged in the span direction 44.
- One of the plurality of odd-numbered flow path walls 81-1 to 81-n1 has a plurality of odd-numbered flow path walls 81-1 having no flow path wall, similarly to the above-mentioned odd-numbered flow path walls 71-1.
- the odd-numbered notch portion 73 is formed, and is divided into a plurality of odd-numbered flow path wall elements 83-1 to 83-m1.
- One of the plurality of even-numbered flow path walls 82-1 to 82-n2 has a plurality of even-numbered flow path walls 82-1 without a flow path wall, similarly to the above-mentioned even-numbered flow path walls 72-1.
- the even-numbered notch portion 75 is formed, and is divided into a plurality of even-numbered flow path wall elements 84-1 to 84-m2.
- FIG. 12 schematically shows a plurality of odd-numbered flow path walls 81-1 to 81-n1 and a plurality of even-numbered flow path walls 82-1 to 82-n2 formed in the partition wall heat exchanger of the third embodiment. It is explanatory drawing shown in.
- the odd-numbered flow path wall element 83-1 of one of the plurality of odd-numbered flow path wall elements 83-1 to 83-m1 is the odd-numbered flow path wall element 83-1 as shown in FIG.
- In-element notch 89 (corresponding to "in-element notch") having a shape in which a part without a flow path wall, that is, a part of the odd-numbered flow path wall element 83-1 is removed is formed in 2 It is divided into two.
- the notch portion 89 in the element is formed and is divided into two.
- the in-element notch 89 is formed in the odd-numbered flow path wall element 83-1 so as to overlap the inflection point where the phase of the sinusoidal curve 51 is ⁇ + 2 ⁇ i.
- the phase of the sinusoidal curve 51 is 5 ⁇ . It is formed so as to overlap the portion corresponding to the range of 60 ° from / 6 + 2 ⁇ i to 7 ⁇ / 6 + 2 ⁇ i.
- the plurality of odd-numbered flow path wall elements 83-1 to 83-m1 are formed so as to overlap the portions corresponding to the maximum points and the minimum points of the sinusoidal curve 51.
- One of the plurality of even-numbered flow path wall elements 84-1 to 84-m2 has the even-numbered flow path wall element 84-1 in the same manner as the odd-numbered flow path wall element 83-1.
- the element 84-1 has no flow path wall, that is, the even-numbered flow path wall element 84-1 has a shape in which a part of the element 84-1 is removed. It is formed and divided into two parts.
- other even-numbered flow path wall elements different from the even-numbered flow path wall element 84-1 are also the same as the even-numbered flow path wall element 84-1. Then, by removing a part of each, the notch portion 90 in the element is formed and divided into two.
- the in-element notch 90 is formed in the even numbered flow path wall element 84-1 so as to overlap the inflection point where the phase of the sinusoidal curve 51 is 2 ⁇ i.
- the phase of the sinusoidal curve 51 is ⁇ . It is formed so as to overlap the portion corresponding to the range of 60 ° from ⁇ / 6 + 2 ⁇ i to ⁇ / 6 + 2 ⁇ i.
- the plurality of even-numbered flow path wall elements 84-1 to 84-m2 are formed so as to overlap the portions corresponding to the maximum points and the minimum points of the sinusoidal curve 51.
- FIG. 13 is a plan view showing the odd-numbered flow path wall element 83-1.
- the odd-numbered flow path wall element 83-1 is formed along the sinusoidal curve 51, similarly to the odd-numbered flow path wall element 74-1 described above, and has a head 77. And a tail 78.
- the odd-numbered flow path wall element 83-1 includes a head side edge portion 85 and a tail side edge portion 86.
- the head side edge portion 85 is adjacent to the in-element notch portion 89, and is arranged on the side of the head 77 from the in-element notch portion 89.
- the head-side edge portion 85 is formed with a head-side end face 87 facing the in-element notch portion 89.
- the head end surface 87 is formed along a plane orthogonal to the sinusoidal curve 51.
- the tail side edge portion 86 is arranged closer to the tail portion 78 than the element inner notch portion 89, and the tail side end surface 88 facing the element inner notch portion 89 is formed.
- the tail side end face 88 is formed along a plane orthogonal to the sinusoidal curve 51.
- the shapes of the head side end face 87 and the tail side end face 88 are not only a shape formed along a plane orthogonal to the sinusoidal curve 51, but also a U that is convex or concave with respect to the notch portion 89 in the element. It includes a shape generated when the odd-numbered flow path wall element 83-1 is formed by etching or the like, such as a character shape.
- the odd-numbered flow path wall element different from the odd-numbered flow path wall element 83-1 among the plurality of odd-numbered flow path wall elements 83-1 to 83-m1 An in-element notch 89 is formed that overlaps the inflection point of the sinusoidal curve along which the odd-numbered flow path wall element follows.
- the plurality of even-numbered flow path wall elements 84-1 to 84-m2 are formed in the same manner as the plurality of odd-numbered flow path wall elements 83-1 to 83-m1, and the plurality of even-numbered flow path wall elements 84-1 to 84-1 to Each of the 84-m2 is formed from one that is mirror-symmetric with the odd-numbered channel wall element 83-1.
- a plurality of odd-numbered flow path walls 81-1 to 81-n1 and a plurality of even-numbered flow paths are formed in the recess 36 for the second heat exchange flow path. Similar to the walls 82-1 to 82-n2 are formed.
- the partition type heat exchanger of the third embodiment is similar to the partition type heat exchanger of the second embodiment described above, in which the first fluid flows through a plurality of first flow paths and the second fluid flows through a plurality of second flow paths. Heat exchange between the first fluid and the second fluid. Similar to the partition wall heat exchanger of the second embodiment described above, the partition wall heat exchanger of the third embodiment can locally and constantly disturb the first fluid and the second fluid, and can be the first fluid. The heat transfer performance for heat exchange with the second fluid can be improved. In the partition wall heat exchanger of the third embodiment, the wall surfaces of the plurality of odd-numbered flow path walls 81-1 to 81-n1 and the plurality of even-numbered flow path walls 82-1 to 82-n2 follow a sinusoidal curve.
- the shapes of the plurality of odd-numbered flow path walls 81-1 to 81-n1 and the plurality of even-numbered flow path walls 82-1 to 82-n2 are formed. The work of optimization can be facilitated.
- the partition wall heat exchanger of the third embodiment has a plurality of first fluids as compared with the partition wall heat exchanger of the second embodiment described above because the notches 89 in a plurality of elements are formed. Friction resistance when flowing through the first flow path is reduced, and pressure loss is reduced.
- the head side edge portion 85 and the tail side edge portion 86 generate a so-called front edge effect as compared with the partition wall type heat exchanger of the second embodiment described above. Opportunities can be increased to improve the heat transfer coefficient between the first fluid and the first partition 45 and the second partition 61.
- the partition wall heat exchanger of Example 3 can improve the heat transfer coefficient between the second fluid and the first partition wall 45 and the second partition wall 61.
- the partition wall heat exchanger of the fourth embodiment includes a plurality of odd-numbered flow path walls 71-1 to 71-n1 of the partition wall heat exchanger of the second embodiment described above.
- the plurality of odd-numbered flow path walls 121-1 to 121-n1 are replaced, and the plurality of even-numbered flow path walls 72-1 to 72-n2 are replaced by a plurality of other even-numbered flow path walls 122-1 to 122-n2.
- FIG. 14 is a plan showing a plurality of odd-numbered flow path walls 121-1 to 121-n1 and a plurality of even-numbered flow path walls 122-1 to 122-n2 formed in the partition wall heat exchanger of the fourth embodiment. It is a figure.
- the plurality of odd-numbered flow path walls 121-1 to 121-n1 and the plurality of even-numbered flow path walls 122-1 to 122-n2 are the plurality of odd-numbered flow path walls 71-1 to 71-n1 described above. Similar to the plurality of even numbered flow path walls 72-1 to 72-n2, they are formed in the recesses 26 for the first heat exchange flow path, and one of them is in the span direction (corresponding to the "amplitude direction of the sinusoidal curve 51"). It is formed so as to overlap one of a plurality of sinusoidal curves 51 arranged at a predetermined pitch P on 44.
- the plurality of odd-numbered flow path walls 121-1 to 121-n1 and the plurality of even-numbered flow path walls 122-1 to 122-n2 are in the span direction (corresponding to the "amplitude direction of the sinusoidal curve 51") 44. They are lined up alternately. That is, one of the plurality of odd-numbered flow path walls 121-1 to 121-n1 and one of the plurality of even-numbered flow path walls 122-1 to 122-n2 are arranged adjacent to each other in the span direction.
- One of the odd-numbered flow path wall and the even-numbered flow path wall arranged adjacent to each other in the span direction may be referred to as one flow path wall, and the other may be referred to as the other flow path wall.
- one flow path wall may be an even numbered flow path wall and the other flow path wall may be an odd numbered flow path wall, but one flow path wall is an odd number flow path wall and the other is an odd number flow path wall. It is substantially the same even if the channel wall is an odd number channel wall.
- the odd-numbered flow path wall 121-1 of one of the plurality of odd-numbered flow path walls 121-1 to 121-n1 is the odd-numbered flow path wall 48, similarly to the above-mentioned odd-numbered flow path wall 71-1.
- a plurality of odd-numbered notch portions 73 having no flow path wall are formed in -1, and the odd-numbered flow path wall 121-1 has a plurality of odd-numbered main flow path wall elements 123- by the plurality of odd-numbered notch portions 73. It is divided into 1 to 123-m1.
- One of the plurality of even-numbered flow path walls 122-1 to 122-n2 has the even-numbered flow path wall 122-1 as the even-numbered flow path wall 72-1 described above.
- a plurality of even-numbered notch portions 75 having no flow path wall are formed in -2, and the even-numbered flow path wall 122-1 has a plurality of even-numbered main flow path wall elements 124- by the plurality of even-numbered notch portions 75. It is divided into 1 to 124-m2.
- FIG. 15 schematically shows a plurality of odd-numbered flow path walls 121-1 to 121-n1 and a plurality of even-numbered flow path walls 122-1 to 122-n2 formed in the partition wall heat exchanger of the fourth embodiment. It is explanatory drawing shown in.
- the odd-numbered main flow path wall element 123-1 of one of the plurality of odd-numbered main flow path wall elements 123-1 to 123-m1 is the odd-numbered main flow path wall element 123-1 as shown in FIG.
- In-element notch 89 (corresponding to "in-element notch", odd in this embodiment) having a shape without a flow path wall, that is, a part of the odd-numbered main flow path wall element 123-1 is removed.
- a notch in the number element 89 is formed, and the first odd-numbered sub-channel wall element 123-1A and the second odd-numbered sub-channel wall element 123-1B are formed.
- the first odd-numbered sub-channel wall element 123-1A is formed in an upwardly convex shape
- the second odd-numbered sub-channel wall element 123-1B is formed in a downwardly convex shape.
- other odd-numbered main flow path wall elements 123-2 different from the odd-numbered main flow path wall element 123-1 are also odd-numbered main flow path wall elements 123-.
- the notch 89 in the odd-numbered element has a plurality of odd-numbered numbers so as to overlap the inflection point (the point where the sine wave changes from convex upward to convex downward) in the sine curve 51 whose phase is (2i + 1) ⁇ . It is formed on the main flow path wall elements 123-1 to 123-m1. Further, the plurality of odd-numbered main flow path wall elements 123-1 to 123-m1 are formed so as to overlap each of the maximum point and the minimum point of the sinusoidal curve 51.
- One of the plurality of even-numbered main flow path wall elements 124-1 to 124-m2 has the even-numbered main flow path wall element 124-1 in the same manner as the odd-numbered main flow path wall element 123-1.
- In-element notch 90 (corresponding to "in-element notch", which has a shape in which the element 124-1 has no flow path wall, that is, a part of the odd-numbered main flow path wall element 124-1 is removed.
- the notch portion 90 in the even-numbered element is formed, and the first even-numbered sub-channel wall element 124-1A and the second even-numbered sub-channel wall element 124-1B are divided into two. There is.
- the first even-numbered sub-channel wall element 124-1A is formed in an upwardly convex shape
- the second even-numbered sub-channel wall element 124-1B is formed in a downwardly convex shape.
- other even-numbered main flow path wall elements 124-2 different from the even-numbered main flow path wall elements 124-1 are also even-numbered main flow path wall elements 124-.
- the notch 90 in the even-numbered element is the even-numbered main flow path wall element 124 so as to overlap the inflection point (the point where the sine wave changes from convex downward to convex upward) in the sine curve 51 whose phase is 2 ⁇ i. It is formed at -1. Further, the plurality of even-numbered main flow path wall elements 124-1 to 124-m2 are formed so as to overlap each of the maximum point and the minimum point of the sinusoidal curve 51.
- FIG. 16 shows the phase range of the sinusoidal curve 51 of the odd-numbered flow path walls 121-1 to 121-n1 which are the other flow path walls and the even-numbered flow path walls 122-1 to 122-n2 which are the one flow path walls. It is explanatory drawing which shows an example of the presence / absence of the sub-channel wall element for each. As described above, one of the even-numbered flow path walls 122-1 to 122-n2 which is one flow path wall and one of the odd-numbered flow path walls 121-1 to 121-n1 which are the other flow path walls. Formes two adjacent flow path walls among a plurality of sinusoidal flow path walls arranged in the span direction (amplitude direction) 44 of the sinusoidal curve 51.
- the turning point (sine wave is convex downward to upward) in the sinusoidal curve 51 on which the odd-numbered main flow path wall element 123-1 overlaps has a phase of 2i ⁇ .
- the phase of (the point where it changes to) is ⁇ 0
- the phase advanced by 60 ° from ⁇ 0 is ⁇ 2
- the phase advanced by 90 ° from ⁇ 2 is ⁇ 4
- the phase advanced by 60 ° from ⁇ 4 is ⁇ 5
- the phase advanced by 90 ° from ⁇ 5 is ⁇ 5.
- the phase advanced by 60 ° from ⁇ 7 becomes the inflection point ⁇ 0 after one cycle. This phase relationship is repeated periodically.
- the range of the phase ⁇ of ⁇ 0 to ⁇ 2 of the sinusoidal curve 51 on which the odd-numbered main flow path wall elements 123-1 overlap is a part of the odd-numbered notch 73
- the range of the phase ⁇ of the sinusoidal curve 51 of ⁇ 2 to ⁇ 4 is.
- the range of the phase ⁇ of the first odd-numbered subchannel wall element 123-1A and the sinusoidal curve 51 from ⁇ 4 to ⁇ 5 is the notch 89 in the odd-numbered element
- the range of the phase ⁇ of the sinusoidal curve 51 from ⁇ 5 to ⁇ 7 is the second.
- the range of the phase ⁇ of ⁇ 7 to ⁇ 0 of the odd-numbered subchannel wall element 123-1B and the sinusoidal curve 51 is formed so as to overlap a part of the odd-numbered notch portion 73.
- the phases advanced by 30 ° from ⁇ 0 are ⁇ 1 and ⁇ 1 to 90.
- ⁇ 3 be the phase advanced by °
- ⁇ 6 be the phase advanced by 120 ° from ⁇ 3
- ⁇ 8 be the phase advanced by 90 ° from ⁇ 6.
- the phase advanced by 30 ° from ⁇ 8 becomes ⁇ 0, which is the inflection point. This phase relationship is repeated periodically.
- the range of the phase ⁇ of ⁇ 0 to ⁇ 1 of the sinusoidal curve 51 on which the even-numbered main flow path wall elements 124-1 overlap is a part of the notch portion 90 in the even-numbered element, and the sinusoidal curve 51.
- the range of the phase ⁇ of ⁇ 1 to ⁇ 3 is the first even number subchannel wall element 124-1A
- the range of the phase ⁇ of the phase ⁇ 3 to ⁇ 6 of the sine curve 51 is the even numbered notch 75
- the range of the phase ⁇ of the sine wave 51 The range of the phase ⁇ is formed so as to overlap the second odd-numbered subchannel wall element 124-1B, and the range of the phase ⁇ of the sinusoidal curve 51 from ⁇ 8 to ⁇ 0 overlaps with a part of the notch portion 90 in the even-numbered element. ..
- the odd-numbered main flow path wall element Similar to the odd-numbered main flow path wall element 123-1, the odd-numbered main flow path wall element different from the odd-numbered main flow path wall element 123-1 among the plurality of odd-numbered main flow path wall elements 123-1 to 123-m1 ,
- the notch in the odd-numbered element that overlaps the inflection point (the point where the sine wave changes from convex upward to convex downward) where the phase of the sine curve 51 along which the odd-numbered main flow path wall element is along is (2i + 1) ⁇ . 89 is formed.
- the plurality of even-numbered main flow path wall elements 124-1 to 124-m2 are also formed in the same manner as the plurality of odd-numbered main flow path wall elements 123-1 to 123-m1, and the plurality of even-numbered main flow path wall elements 124-1 to 124-1 to Each of 124-m2 is formed from an odd-numbered main flow path wall element 123-1 that is mirror-symmetrical, and an inflection point (sine wave) in which the phase of the sinusoidal curve 51 along which the even-numbered main flow path wall element is along is 2i ⁇ .
- the notch 90 in the even-numbered element is formed so as to overlap (the point at which the wave changes from convex downward to convex upward).
- a plurality of odd-numbered flow path walls 121-1 to 121-n1 and a plurality of even-numbered flow paths are formed in the recess 36 for the second heat exchange flow path. Similar to the walls 122-1 to 122-n2 are formed.
- the odd-numbered flow path walls 121-1 to 121-n1 and the even-numbered flow path walls 122-1 to 122-n2 are geometrically related to the shapes described above in addition to the shapes described above. Includes symmetrical or similar shapes.
- the first fluid flows through a plurality of first flow paths, and the second fluid flows through a plurality of second flow paths.
- Heat exchange between the first fluid and the second fluid Similar to the partition wall heat exchanger of the second embodiment described above, the partition wall heat exchanger of the fourth embodiment can locally and constantly disturb the first fluid and the second fluid, and can be the first fluid. The heat transfer performance when exchanging heat with the second fluid can be improved.
- the wall surfaces of the plurality of odd-numbered flow path walls 121-1 to 121-n1 and the plurality of even-numbered flow path walls 122-1 to 122-n2 follow a sinusoidal curve.
- the work of optimizing the shape can be facilitated.
- the partition type heat exchanger of the fourth embodiment similarly to the third embodiment described above, a plurality of notches 89 in the odd-numbered elements are formed, so that the partition wall type heat exchanger of the second embodiment described above is formed.
- the partition type heat exchanger of the second embodiment described above is provided by the head side edge portion 85 and the tail side edge portion 86 shown in FIG.
- the chances of generating the so-called front edge effect can be increased to improve the heat transfer coefficient between the first fluid and the first partition wall 45 and the second partition wall 61.
- the partition wall heat exchanger of the fourth embodiment can improve the heat transfer coefficient between the second fluid and the first partition wall 45 and the second partition wall 61, as in the third embodiment described above.
- the flow of the working fluid flowing between the flow path walls sandwiched between the upper and lower partition walls includes an odd-numbered notch 73, an even-numbered notch 75, and an odd-numbered element internal notch 89 formed in the flow path wall. And the cross-sectional area of the flow path is changed by the notch 90 in the even-numbered element, so that the velocity change and the pressure change occur. Since the velocity is a vector quantity and has magnitude and direction, the velocity change of the working fluid includes the change of magnitude (flow velocity) and the change of direction (direction of flow).
- the difference in the change in the cross-sectional area of the flow path when the odd-numbered element inscribed portion 89 and the even-numbered element inscribed portion 90 are not formed and when they are formed is considered. ..
- the odd-numbered flow path walls 71-1, 71-2, 71-3 and the even-numbered flow path walls 72-1, 72-2 are formed with the odd-numbered notch portions 73, respectively, so that a plurality of odd-numbered flow path wall elements 74-1 to 74- Has m2.
- the even-numbered flow path walls 72-1 and 72-2 also have a plurality of even-numbered flow path wall elements 76-1 to 76-m2 by forming even-numbered notches 75 in each of them.
- the odd-numbered flow path walls 71-1, 71-2, and 71-3 do not have the notch 89 in the odd-numbered element, and the even-numbered flow path walls 72-1 and 72- Notches 90 in even-numbered elements are not formed in each of 2.
- the flow path widths seen in the direction orthogonal to the sinusoidal curve 51 along which each flow path wall is, for example, are the odd number flow path wall elements 74-1 and the even number of the adjacent odd number flow path walls 71-2.
- the odd-numbered element inner notch portion 89 and the even-numbered element inner notch portion 90 are formed as shown in FIG. 18, the second of the above-mentioned adjacent odd-numbered flow path walls 121-1.
- the change in the flow path width (W22-W21) when the odd-numbered element inscribed portion 89 and the even-numbered element inscribed portion 90 are formed is the change in the odd-numbered element inscribed portion 89 and the even-numbered element. It can be seen that the change is twice as large as the change (W12-W11) of the flow path width (see FIG. 17) when the inner notch 90 is not formed.
- the change in the flow path width that is, the change in the cross-sectional area of the flow path causes a change in the flow velocity and pressure of the flowing working fluid according to Bernoulli's theorem, and the larger the change in the flow path width, the more the flow velocity and pressure of the flowing working fluid. Will change significantly.
- the change in the flow velocity and pressure of the flowing working fluid is large, the disturbance received by the working fluid is also large, and the heat transfer coefficient between the first fluid and the first partition wall 45 and the second partition wall 61 is greatly improved by the contribution of the front edge effect.
- the heat transfer performance of the partition type heat exchanger can be improved.
- the second odd sub-channel wall element 124-1B of the odd channel wall 122-1 sandwiched between 123-1B is an object placed in the stream, for example, "Chushu" often found in rivers. Works the same as.
- the first even-numbered sub-channel wall element 124-1A and the second even-numbered sub-channel wall element 124-1B receive the force of the flow and receive the first even-numbered sub-channel.
- the front edge effect is generated at the head portion 78 of the flow path wall element 124-1A and the edge portion 86 of the second even number sub-channel wall element 124-1B.
- the flow of the working fluid is the first even-numbered flow path wall element 124-1A of the even-numbered flow path wall 122-1 and the first odd-numbered sub-channel wall element of the odd-numbered flow path walls 121-1 on both sides thereof.
- a contracted flow is formed between 123-1A and the first odd-numbered sub-channel wall element 123-1A of the even-numbered flow path wall 121-2 to reduce the flow path width, and the even-numbered flow path wall 122-1 After passing through the first even-numbered flow path wall element 124-1A, a flow expansion is formed in which the flow path width expands, and the odd-numbered flow path wall 121-1 has an odd number with the second odd-numbered sub-channel wall element 123-1B.
- the front edge effect obtained by dividing the sinusoidal flow path wall will be explained based on the behavior of the fluid.
- the pressure of the working fluid flowing through the wide flow path is greater than the pressure of the working fluid flowing through the narrow flow path. Therefore, if the pressure at the point X1 is P1 and the pressure at the point X2 is P2 in FIG. 19, P2> P1 and the working fluid flowing between the odd-numbered flow path walls 121-1 and 121-2 is odd.
- a force F1 is applied in the direction from the numbered flow path wall 121-1 to the odd numbered flow path wall 121-2.
- the plurality of odd-numbered flow path wall elements 83-1 to 83-m1 of the partition wall type heat exchanger of the third embodiment described above are other plurality of odd-numbered flow path wall elements.
- the plurality of even-numbered flow path wall elements 84-1 to 84-m2 are replaced with other plurality of even-numbered flow path wall elements.
- the plurality of odd-numbered main flow paths wall elements 123-1 to 123-m1 of the partition wall heat exchanger of the fourth embodiment described above are other than a plurality of other odd-numbered main flow paths.
- FIG. 20 is a plan showing one odd-numbered flow path wall element 91 and one odd-numbered main flow path wall element 91 among the plurality of odd-numbered flow path wall elements formed in the partition wall heat exchanger of Example 5. It is a figure. As shown in FIG. 20, the odd-numbered flow path wall element 91 is formed in the same manner as the odd-numbered flow path wall element 83-1 described above, includes a head 77 and a tail 78, and has a head side. It includes an edge portion 85 and a tail side edge portion 86.
- odd-numbered main flow path wall element 91 is formed in the same manner as the odd-numbered main flow path wall element 123-1 described above, includes a head 77 and a tail 78, and has a head side edge portion 85 and a tail side edge portion 86. And have.
- the odd-numbered flow path wall element 91 and the odd-numbered main flow path wall element 91 further include an intermediate flow path wall element 92 (corresponding to the “intermediate flow path wall element”), respectively.
- the intermediate flow path wall element 92 is formed in a columnar shape.
- the intermediate flow path wall element 92 is arranged in the region where the inscribed portion 89 is formed, and overlaps the inflection point of the sinusoidal curve 51 along which the odd-numbered flow path wall element 91 and the odd-numbered main flow path wall element 91 are formed. It is arranged like this.
- each of the odd-numbered flow path wall element 91 and the odd-numbered main flow path wall element 91 is provided with the intermediate flow path wall element 92, whereby the partition wall heat of the above-described 3 and 4 examples shown in FIG. 13 is provided.
- the length D of the in-element notch 89 which is the distance between the head side edge portion 85 and the tail side edge portion 86, can be increased.
- flow path wall elements different from the odd-numbered flow path wall element 91 and the odd-numbered main flow path wall element 91 among the plurality of flow path wall elements are also the odd-numbered flow path wall element 91 and the odd-numbered main flow path wall element 91.
- an intermediate flow path wall element 92 is provided. That is, the intermediate flow path wall element 92 is periodically formed in each of the plurality of flow path walls of the partition wall heat exchangers of the above-mentioned Examples 3 and 4 for each period T.
- the plurality of even-numbered flow path wall elements are formed in the same manner as the plurality of odd-numbered flow path wall elements, and the plurality of even-numbered flow path wall elements of the above-described third embodiment and the plurality of even-numbered flow path wall elements of the above-described embodiment 4 are formed.
- Each of the main flow path wall elements is formed from those that are mirror image symmetric with the odd number main flow path wall element 91 and the odd number main flow path wall element 91.
- the partition type heat exchanger of Example 5 exchanges heat between the first fluid and the second fluid in the same manner as the partition type heat exchangers of Examples 3 and 4 described above.
- the partition heat exchanger of the fifth embodiment can locally and constantly disturb the first fluid and the second fluid in the same manner as the partition heat exchangers of the third and fourth embodiments described above.
- the heat transfer performance for heat exchange between the first fluid and the second fluid can be improved.
- the partition wall heat exchanger of the fifth embodiment can be used as the partition wall heat exchanger of the third and fourth embodiments by forming the intermediate flow path wall element 92 and increasing the length D of the notch 89 in the element. In comparison, the frictional resistance due to the flow path wall when the fluid flows through the flow path can be reduced. Further, the intermediate flow path wall element 92 guides the flow of the fluid flowing along the odd-numbered flow path wall element 91 and the odd-numbered main flow path wall element 91, and the length D of the notch in the element 89 is increased.
- the portion to be joined is reduced, and the decrease in strength of the first partition wall 45 and the second partition wall 61 caused by the fact that the first partition wall 45 and the second partition wall 61 are easily deformed in the stacking direction is reinforced. Further, the impact that the head side edge portion 85 and the tail side edge portion 86 receive from the first fluid can be reduced.
- the intermediate flow path wall element 92 is arranged so as to overlap the inflection point of the sinusoidal curve 51 along which the odd-numbered flow path wall element 91 and the odd-numbered main flow path wall element 91 are aligned, but do not overlap the inflection point. As such, it may be formed. Even when the intermediate flow path wall element 92 is formed so as not to overlap the inflection point, the same action and effect as described above can be obtained by arranging the intermediate flow path wall element 92 in the region where the notch portion 89 in the element is formed. be able to. Further, although the intermediate flow path wall element 92 is formed in a columnar shape, it may be formed in a shape other than the columnar shape. Even when the intermediate flow path wall element 92 is formed in a shape other than a columnar shape, the same actions and effects as described above can be obtained.
- FIG. 21 is a graph showing the heat transfer rate K and the product KA of the heat transfer rate K and the heat transfer area in the partition type heat exchanger of Example 5 and the partition type heat exchanger of Comparative Example.
- the partition wall heat exchanger of the comparative example is a so-called plate heat exchanger.
- the graph of FIG. 21 shows that the product KA in the partition heat exchanger of Example 5 and the product KA in the partition heat exchanger of Comparative Example are about the same, and the partition heat exchanger of Comparative Example is It is shown that it has the same heat exchange capacity as the partition type heat exchanger of Example 5.
- the heat transfer rate K of the partition wall heat exchanger of Example 5 is approximately 10 times the heat transfer rate K of the partition wall heat exchanger of Comparative Example, and the partition wall of Example 5 shows. It shows that the heat transfer rate K of the heat exchanger is larger than the heat transfer rate K of the partition wall heat exchanger of the comparative example. That is, in the graph of FIG. 21, the heat exchanger of the fifth embodiment exchanges heat as compared with the plate heat exchanger having the same heat exchange capacity as the partition heat exchanger of the fifth embodiment. It shows that the thermal performance is high.
- FIG. 22 is a graph showing the pressure loss of the partition wall heat exchanger of Example 5 and the pressure loss of the partition wall heat exchanger of Comparative Example.
- the graph of FIG. 22 shows that the pressure loss of the partition heat exchanger of Example 5 is 44% of the pressure loss of the partition heat exchanger of Comparative Example, and the partition heat exchanger of Example 5 has a pressure loss of 44%.
- the pressure loss can be reduced as compared with the partition type heat exchanger of the comparative example.
- the reason why the pressure loss of the partition wall heat exchanger of Example 5 is reduced is that the hydraulic diameter of the flow path of the partition wall heat exchanger of Example 5 is smaller than 1.0 mm, and that of the partition wall heat exchanger of Comparative Example. It is smaller than the hydraulic diameter of the flow path.
- the reason why the pressure loss of the partition type heat exchanger of the fifth embodiment is reduced is that a plurality of odd-numbered channel walls and a plurality of odd-numbered main channel wall elements have a plurality of odd-numbered notches 73 and a plurality of elements.
- the inner notch 89 is formed, and the plurality of even numbered flow path walls and the plurality of even numbered main flow path wall elements are formed with a plurality of even numbered notch portions 75 and a plurality of element inner notch portions 90. It can be mentioned that it has been done.
- first flow path walls 48-1 to 48-n (odd number flow path wall 71-n1, even number flow path wall 72-n2, odd number flow path wall 81) of the partition wall type heat exchanger of the embodiment. -N1, even numbered flow path wall 82-n2, odd numbered main flow path wall 121-n1, even numbered main flow path wall 122-n2 are included.
- the first flow path walls 48-1 to 48-n are represented.
- the first side flow path wall surface 52 and the second side flow path wall surface 53 are formed into two sine curves offset by a sine curve 51 in which a plurality of first flow path walls 48-1 to 48-n overlap.
- FIG. 23 is a plan view showing a part of one flow path wall included in the partition wall heat exchanger of the modified example.
- the flow path wall 101 is formed along a sinusoidal curve 51, and is formed of a plurality of first side portions 103 and a plurality of second side portions 104.
- the plurality of first side portions 103 overlap with the upwardly convex portion of the sinusoidal curve 51.
- the plurality of second side portions 104 overlap with the downwardly convex portion of the sinusoidal curve 51.
- the plurality of first side portions 103 are formed with a first convex flow path wall surface 105 and a first concave flow path wall surface 106.
- the first convex flow path wall surface 105 is formed on the side of the first side wall 46 of the plurality of first side portions 103.
- the first concave flow path wall surface 106 is formed on the side of the second side wall 47 of the plurality of first side portions 103.
- a second convex flow path wall surface 107 and a second concave flow path wall surface 108 are formed on the plurality of second side portions 104.
- the second convex flow path wall surface 107 is formed on the side of the second side wall 47 of the plurality of second side portions 104.
- the second concave flow path wall surface 108 is formed on the side of the first side wall 46 of the plurality of second side portions 104.
- the first convex flow path wall surface 105 and the second convex flow path wall surface 107 are formed so as to follow one sine curve 111 (corresponding to the "first sine curve”).
- the sinusoidal curve 111 is formed so that the period of the sinusoidal curve 111 is equal to the period of the sinusoidal curve 51.
- the amplitude of the sinusoidal curve 111 is a numerical multiple (for example, 1.) of the amplitude A of the sinusoidal curve 51 so that the amplitude of the sinusoidal curve 111 is larger than the amplitude of the sinusoidal curve 51. It is formed so as to be equal to (twice).
- the sinusoidal curve 111 further allows the plurality of inflection points of the sinusoidal curve 111 to overlap the plurality of inflection points of the sinusoidal curve 51 and intersects the sinusoidal curve 51 at the plurality of inflection points of the sinusoidal curve 111. Is formed in.
- the first concave flow path wall surface 106 and the second concave flow path wall surface 108 are formed so as to follow one sine curve 112 (corresponding to the "second sine curve”).
- the sinusoidal curve 112 is formed so that the period of the sinusoidal curve 112 is equal to the period of the sinusoidal curve 51.
- the sinusoidal curve 112 further comprises, for example, a positive numerical multiple (eg,) of the amplitude A of the sinusoidal curve 51 being less than 1 so that the amplitude of the sinusoidal curve 112 is smaller than the amplitude of the sinusoidal curve 51. It is formed so as to be equal to 0.8 times).
- the sinusoidal curve 112 is formed so that the period of the sinusoidal curve 112 is equal to the period of the sinusoidal curve 111 and the amplitude of the sinusoidal curve 112 is smaller than the amplitude of the sinusoidal curve 111.
- the sinusoidal curve 112 further allows the plurality of inflection points of the sinusoidal curve 112 to overlap the plurality of inflection points of the sinusoidal curve 51 and intersects the sinusoidal curve 51 at the plurality of inflection points of the sinusoidal curve 112. Is formed in.
- the sinusoidal curve 112 is such that the plurality of inflection points of the sinusoidal curve 112 overlap the plurality of inflection points of the sinusoidal curve 111 and intersect the sinusoidal curve 111 at the plurality of inflection points of the sinusoidal curve 112. Is formed in.
- the partition wall heat exchanger can change the direction in which the first fluid flows in the plurality of first flow paths even when the plurality of first flow path walls are replaced by the flow path walls 101.
- the cross-sectional area of the plurality of first flow paths differs depending on the position, and the speed of the first fluid flowing through the plurality of first flow paths can be changed.
- the partition type heat exchanger can change the direction in which the second fluid flows in the plurality of second flow paths even when the plurality of second flow path walls are replaced by the flow path walls 101.
- the cross-sectional area of the plurality of second flow paths differs depending on the position, and the speed of the second fluid flowing through the plurality of second flow paths can be changed.
- such a partition type heat exchanger has a first fluid and a first fluid flowing through the plurality of first flow paths and the plurality of second flow paths, respectively, like the partition type heat exchanger of the above-described embodiment. It is possible to improve the heat transfer performance of heat exchange between the first fluid and the second fluid by constantly locally disturbing the two fluids.
- frictional resistance is reduced by providing a plurality of notches and intermediate flow path wall elements in the flow path wall 101, similarly to the partition type heat exchanger of the above-described embodiment. , The front edge effect can be exhibited, the shape loss can be reduced, and the heat transfer performance for heat exchange between the first fluid and the second fluid can be improved.
- such a partition type heat exchanger has a plurality of first flow paths, similarly to the partition type heat exchanger of the above-described embodiment, because the wall surface of the flow path wall 101 follows a sinusoidal curve. It is possible to facilitate the work of inputting / changing the shape with the plurality of second flow paths and facilitating the optimization of the shape by computer simulation.
- the head 77 and the tail 78 of the flow path wall elements of the partition wall type heat exchangers of Examples 2 to 5 include such a plurality of first flow path walls and a plurality of second flow path walls.
- the wall surface of the flow path wall element is formed more gently, so that the first flow is compared with the partition type heat exchangers of Examples 2 to 5 described above.
- the shape loss expressed by the shape loss coefficient which is one of the pressure losses in fluid dynamics, can be reduced, and the pressure loss between the first flow path and the second flow path can be reduced. be able to.
- the head 77 and the tail 78 are formed so as to be sharp, but the head 77 and the tail 78 are formed so as not to be sharp. May be done.
- both the first side wall surface 41 and the second side wall surface 42 follow a sine curve, but it does not have to follow the sine curve.
- the side wall surface 41 and the second side wall surface 42 may be formed substantially flat. Even in these cases, the partition type heat exchanger can improve the heat transfer performance by constantly locally disturbing the fluid because the walls of the plurality of flow path walls follow a sinusoidal curve. The work of optimizing the shape of a plurality of flow path walls can be facilitated.
- the odd-numbered notch 73, the even-numbered notch 75, the odd-numbered element internal notch (elemental notch) 89, and the even-numbered element internal notch (elemental notch) 90 According to the flow path formed by the formed sinusoidal flow path wall, the thinness of the temperature boundary layer is physically secured by the limitation of the flow path wall height, and the flow of the working fluid is changed under the physical thickness. And, the leading edge effect due to the edge structure and the turbulent flow effect due to the generation of vortices can be obtained, and the means that can promote heat transfer can make full use of the thinness of the temperature boundary layer, the generation of many leading edge effects and the disturbance to the flow. , It is possible to obtain a heat transfer promoting effect of a fine structure that is unprecedented.
- the odd-numbered element notch portion (in-element notch portion) 89 is a plurality of odd-numbered flow path wall elements 83-1 to 83-m1, and a plurality of odd-numbered flow path wall elements 123-.
- One is formed in each of 1 to 123-m1
- the even-numbered element inner notch (in-element notch) 90 is a plurality of even-numbered flow path wall elements 84-1 to 84-m2, and a plurality of even numbers.
- the number of in-element notches) 90 formed may be two or more.
- the examples are not limited by the contents described above. Further, the above-mentioned components include those that can be easily assumed by those skilled in the art, those that are substantially the same, that is, those having a so-called equal range. Furthermore, the components described above can be combined as appropriate. Furthermore, at least one of the various omissions, substitutions and changes of the components can be made without departing from the gist of the embodiment.
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Abstract
Description
y=Asin(2π/T・x)・・・(1)
ここで、変数xは、流れ方向29における位置を示している。変数yは、スパン方向44における位置を示している。振幅Aは、1.0mmより小さい値、たとえば、0.6mmが例示される。周期Tとしては、3mmが例示される。
θ=πi・・・(2)
また、正弦曲線51の極大点は、次式(3)により表現される位相θに対応する正弦関数のグラフの点に対応している。
θ=π/2+2πi・・・(3)
さらに、正弦曲線51の極小点は、次式(4)により表現される位相θに対応する正弦関数のグラフの点に対応している。
θ=3π/2+2πi・・・(4)
2.5<Wc1/H1<6・・・(5)
ここで、最小第1流路幅Wc1は、複数の第1流路壁48-1~48-nの間隔の最小値であり、複数の第1流路壁48-1~48-nのうちの隣り合う2つの流路壁間の距離の最小値を示し、すなわち、第1流路65の幅の最小値を示している。第1流路壁高さH1は、第1隔壁45と第2隔壁61との間隔を示し、第1熱交換流路用凹部26の深さを示し、複数の第1流路壁48-1~48-nの高さを示し、すなわち、第1流路65の積層方向20の高さを示している。第2流路66は、最小第2流路幅Wc2と第2流路壁高さH2とを用いて、次式(6)が成立するように形成されている。
2.5<Wc2/H2<6・・・(6)
ここで、最小第2流路幅Wc2は、複数の第2流路壁62-1~62-nの間隔の最小値であり、複数の第2流路壁62-1~62-nのうちの隣り合う2つの流路壁間の距離の最小値を示し、すなわち、第2流路66の幅の最小値を示している。第2流路壁高さH2は、第1隔壁45と第2隔壁61との間隔を示し、第2熱交換流路用凹部36の深さを示し、複数の第2流路壁62-1~62-nの高さを示し、すなわち、第2流路66の積層方向20の高さを示している。隔壁式熱交換器1は、Wc1/H1とWc2/H2とが6より小さいことにより流れる流体の圧力に対して十分な強度を確保し、複数の第1流路65に第1流体が流れ、複数の第2流路66に第2流体が流れるときに、第1隔壁45と第2隔壁61とが各々の流体の圧力により撓むことが防止される。隔壁式熱交換器1は、Wc1/H1とWc2/H2とが2.5より大きく、かつ、6より小さいことにより、第1流体および第2流体と第1隔壁45および第2隔壁61との間の熱伝達の伝熱性能の低下を抑制し、かつ、耐圧性能の低下を抑制することができる。作動流体の稼働条件に応じてこれらの設計パラメータをチューニングする。
隔壁式熱交換器1が作製される前に、複数の第1流路65と複数の第2流路66との形状が異なる、隔壁式熱交換器1の複数の数学モデルが作成される。その複数の数学モデルは、コンピュータシミュレーションに利用され、複数の第1流路65と複数の第2流路66とを流れる流体の挙動や熱交換器の伝熱性能を算出することに利用される。隔壁式熱交換器1は、その算出された流体の挙動や熱交換器の伝熱性能に基づいて、複数の第1流路と複数の第2流路とが適切な形状に形成されるように、設計される。
隔壁式熱交換器1は、第1流入管5を介して第1流体が第1流入室14に流入する。第1流体は、第1流入室14に流入した後に、複数の第1熱交換器板21にそれぞれ分配され、第1熱交換器板21に形成される第1流入流路用凹部27に流入する。第1流体は、第1流入流路用凹部27に流入した後に、第1流入流路用凹部27により流れの幅が第1流入室14の幅から第1熱交換流路用凹部26の幅に広げられ、第1熱交換流路用凹部26に形成された複数の第1流路65に流入する。第1流体は、複数の第1流路65を流れるときに、第1側流路壁面52と第2側流路壁面53とが正弦曲線に沿っていることにより、流れる方向が正弦波状に変化する。複数の第1流路壁48-1~48-nのうちの正弦曲線の極大点、または、極小点と重なる部分は、第1流体が流れる方向が他の部分に比べて急激に変化することにより、第1流体からより大きい応力を受ける。複数の第1流路壁48-1~48-nのうちの正弦曲線の極大点、または、極小点と重なる部分は、他の部分に比べて、流路壁の幅が大きく形成されている。これにより、第1流体から受ける応力に対する強度が他の部分より大きく、他の部分に比べて大きな応力に対して十分な強度を確保することができる。
実施例1の隔壁式熱交換器1は、第1隔壁45(「第1隔壁」に対応)と、第2隔壁61(「第2隔壁」に対応)と、複数の第1流路壁48-1~48-nとを備えている。複数の第1流路壁48-1~48-nは、第1隔壁45と第2隔壁61との間に形成される第1熱交換流路用凹部26の内部の第1空間67を複数の第1流路65に分割する。このとき、第1隔壁45と第2隔壁61とは、複数の第1流路65を流れる第1流体と異なる第2流体が流れる複数の第2流路66から複数の第1流路65を隔てている。複数の第1流路壁48-1~48-nは、それぞれが正弦曲線に沿って形成される。また、複数の第1流路壁48-1~48-nは、それぞれが互いに異なる正弦曲線に沿う複数の第1側流路壁面52と複数の第2側流路壁面53とを形成する。
実施例2の隔壁式熱交換器の複数の流路壁の各々は、複数の切欠き部が正弦曲線の周期ごとに形成されることにより、複数の流路壁要素に分割されている。この複数の切欠き部は、複数の奇数番切欠き部73と複数の偶数番切欠き部75との両方を示している。すなわち、複数の奇数番流路壁71-1~71-n1の各々は、複数の奇数番切欠き部73が正弦曲線の周期ごとに形成されることにより、複数の奇数番流路壁要素74-1~74-m1に分割されている。このとき、複数の奇数番切欠き部73は、正弦曲線51の変曲点に重なっている。正弦曲線51の極大点と極小点はそれぞれ、複数の奇数番流路壁要素74-1~74-m1に形成される壁面に重なっている。複数の偶数番流路壁72-1~72-n2の各々は、複数の偶数番切欠き部75が正弦曲線の周期ごとに形成されることにより、複数の偶数番流路壁要素76-1~76-m2に分割されている。このとき、複数の偶数番切欠き部75は、正弦曲線51の変曲点に重なっている。正弦曲線51の極大点と極小点はそれぞれ、複数の偶数番流路壁要素76-1~76-m2に形成される壁面に重なっている。
41 :第1側壁面
42 :第2側壁面
45 :第1隔壁
46 :第1側壁
47 :第2側壁
48-1~48-n:複数の第1流路壁
51 :正弦曲線
52 :第1側流路壁面
53 :第2側流路壁面
61 :第2隔壁
62-1~62-n:複数の第2流路壁
65 :第1流路
66 :第2流路
67 :第1空間
68 :第2空間
73 :奇数番切欠き部
75 :偶数番切欠き部
89 :要素内切欠き部(奇数番要素内切欠き部)
90 :要素内切欠き部(偶数番要素内切欠き部)
85 :頭部側エッジ部
86 :尾部側エッジ部
91 :奇数番流路壁要素(流路壁要素)、奇数番主流路壁要素(流路壁要素)
92 :中間流路壁要素
121-1~121-n1:複数の奇数番流路壁
122-1~122-n2:複数の偶数番流路壁
123-1~123-m1:複数の奇数番主流路壁要素
123-1A~123-m1A:第1奇数番副流路壁要素
123-1B~123-m1B:第2奇数番副流路壁要素
124-1~124-m2:複数の偶数番主流路壁要素
124-1A~124-m2A:第1偶数番副流路壁要素
124-1B~124-m2B:第2偶数番副流路壁要素
Claims (10)
- 第1隔壁と、
第2隔壁と、
前記第1隔壁と前記第2隔壁との間に形成される空間を複数の第1流路に分割する複数の流路壁とを備え、
前記第1隔壁と前記第2隔壁とは、前記複数の第1流路を流れる第1流体と異なる第2流体が流れる第2流路から前記複数の第1流路を隔て、
前記複数の流路壁は、複数の壁面が形成され、
前記複数の壁面の各々は、互いに位置が異なる正弦曲線に沿い、
前記正弦曲線の振幅方向に並んだ複数の正弦波状の流路壁のうち、隣り合う二つの流路壁は、一方の流路壁の正弦曲線の変曲点に重なる位相をθ0(=0°)としたとき、θ0(=0°)<θ1<θ2<90°<θ3<θ4<180°<θ5<θ6<270°<θ7<θ8<θ0(=360°)の位相の範囲を一周期とする正弦波状の流路壁であり、
前記一方の流路壁は、複数の流路壁のない部分が形成されることで、θ1≦θ<θ3及びθ6≦θ<θ8の位相θの範囲に重なる部分に主流路壁要素が形成され、
他方の流路壁は、複数の流路壁のない部分が形成されることで、θ2≦θ<θ4及びθ5≦θ<θ7の位相θの範囲に重なる部分に主流路壁要素が形成される
隔壁式熱交換器。 - 前記一方の流路壁は、
θ0≦θ<θ1、θ3≦θ<θ6及びθ8≦θ<θ0の位相θの範囲に重なる部分に流路壁のない部分が形成されることで、θ1≦θ<θ3及びθ6≦θ<θ8の位相θの範囲に重なる部分に主流路壁要素が形成され、
前記他方の流路壁は、
θ0≦θ<θ2、θ4≦θ<θ5及びθ7≦θ<θ0の位相θの範囲に重なる部分に流路壁のない部分が形成されることで、θ2≦θ<θ4及びθ5≦θ<θ7の位相θの範囲に重なる部分に主流路壁要素が形成される
請求項1に記載の隔壁式熱交換器。 - 前記一方の流路壁の前記主流路壁要素は、
前記θ1≦θ<θ3の位相θの範囲に重なる部分に形成された第1副流路壁要素と、前記θ6≦θ<θ8の位相θの範囲に重なる部分に形成された第2副流路壁要素とを有し、
前記他方の流路壁の前記主流路壁要素は、
前記θ2≦θ<θ4の位相θの範囲に重なる部分に形成された第1副流路壁要素と、前記θ5≦θ<θ7の位相θの範囲に重なる部分に形成された第2副流路壁要素とを有する
請求項2に記載の隔壁式熱交換器。 - 前記複数の流路壁の各々は、
第1壁面と、
前記第1壁面の反対側に形成される第2壁面とが形成され、
前記正弦曲線は第1正弦曲線と第2正弦曲線を有し、
前記第1壁面は前記第1正弦曲線に沿うとともに前記第2壁面は前記第2正弦曲線に沿い、
前記第1正弦曲線の周期と振幅は、前記第2正弦曲線の周期と振幅に等しく、
前記第1正弦曲線と前記第2正弦曲線は各々の振幅方向に所定のオフセット値だけ平行移動された位置にある
請求項1~請求項3のうち、何れか一つに記載の隔壁式熱交換器。 - 前記一方の流路壁の前記流路壁のない部分は、
θ0≦θ<θ1及びθ8≦θ<θ0の位相θの範囲に重なる部分に形成された流路壁のない切欠き部と、θ3≦θ<θ6の位相θの範囲に重なる部分に形成された流路壁のない要素内切欠き部とを有し、
前記他方の流路壁の前記流路壁のない部分は、
θ0≦θ<θ2及びθ7≦θ<θ0の位相θの範囲に重なる部分に形成された流路壁のない切欠き部と、θ4≦θ<θ5の位相θの範囲に重なる部分に形成された流路壁のない要素内切欠き部とを有する
請求項1~請求項4のうち、何れか一つに記載の隔壁式熱交換器。 - 前記主流路壁要素は、前記要素内切欠き部に配置される中間流路壁要素を備える
請求項5に記載の隔壁式熱交換器。 - 前記主流路壁要素は、前記切欠き部に隣接する端に近付くにつれてなだらかに幅が小さくなるように、形成される
請求項5または請求項6に記載の隔壁式熱交換器。 - 前記複数の流路壁の各々は、
第1壁面と、
前記第1壁面の反対側に形成される第2壁面とが形成され、
前記正弦曲線は第1正弦曲線と第2正弦曲線を有し、
前記第1壁面は第1正弦曲線に沿うとともに前記第2壁面は第2正弦曲線に沿い、
前記第1正弦曲線の周期は、前記第2正弦曲線の周期に等しく、
前記第1正弦曲線の振幅は、前記第2正弦曲線の振幅より小さく、
前記第1正弦曲線と前記第2正弦曲線とは、各々の変曲点で互いに交差する
請求項1~請求項7のうち、何れか一つに記載の隔壁式熱交換器。 - 前記空間の端に側壁面を形成する側壁をさらに備え、
前記側壁面は、前記正弦曲線と周期が等しい他の正弦曲線に沿う
請求項1~請求項8のうち、何れか一つに記載の隔壁式熱交換器。 - 前記複数の流路壁の間隔の最小値を、前記第1隔壁と前記第2隔壁との間隔で除算した値は、2.5より大きく、かつ、6より小さい
請求項1~請求項9のうち、何れか一つに記載の隔壁式熱交換器。
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US17/627,011 US11994349B2 (en) | 2019-07-29 | 2020-06-26 | Bulkhead heat exchanger |
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