WO2015141634A1 - 熱交換器 - Google Patents
熱交換器 Download PDFInfo
- Publication number
- WO2015141634A1 WO2015141634A1 PCT/JP2015/057732 JP2015057732W WO2015141634A1 WO 2015141634 A1 WO2015141634 A1 WO 2015141634A1 JP 2015057732 W JP2015057732 W JP 2015057732W WO 2015141634 A1 WO2015141634 A1 WO 2015141634A1
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- WIPO (PCT)
- Prior art keywords
- spacer
- core
- joint surface
- heat exchanger
- gap
- Prior art date
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Classifications
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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
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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
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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
- F28F2240/00—Spacing means
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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
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage
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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
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
Definitions
- the present invention relates to a heat exchanger, and more particularly, to a heat exchanger including a plurality of cores and a spacer portion disposed between joint surfaces of adjacent cores.
- a heat exchanger including a plurality of cores and a spacer portion disposed between the joint surfaces of adjacent cores.
- a heat exchanger is disclosed in JP2012-255646A.
- Japanese Patent Application Laid-Open No. 2012-255646 discloses a heat exchanger including a plurality of cores, a spacer portion disposed between joint surfaces of adjacent cores, and a header portion.
- each core two kinds of flow path portions through which two kinds of fluids circulate are alternately laminated.
- the core has a rectangular parallelepiped shape, and the spacer portion is formed in an L shape along two sides of the outer peripheral edge of the bonding surface of the core, and the outer peripheral portion is welded to the bonding surface of the adjacent core.
- JP 2012-255646 A when a heat exchanger is used under operating conditions where there is a large temperature difference between the high temperature side and the low temperature side, the deformation occurs in each core, so that the heat exchanger is disposed between the cores. A large stress is generated in the spacer portion.
- the end portions (welding start point or end point) of the welded portions located at both ends of the L-shaped spacer portion have low strength, and stress is concentrated and the stress tends to increase. Therefore, as the spacer portion, a spacer portion that can sufficiently withstand stress under an operating condition in which the temperature difference between the high temperature side and the low temperature side is large is desirable.
- the header portion is configured to collectively introduce or lead out the fluid to or from the flow passage portions of the cores by covering the entrances and exits of the flow passage portions of the plurality of cores across the spacer portion. Therefore, the spacer portion also functions as a partition between the core joint surfaces for maintaining the internal space of the header portion at a predetermined pressure. Therefore, if there is poor welding at the welded portion between the spacer portion and the core, fluid leakage to the gap between the cores may occur. Therefore, when manufacturing the heat exchanger, a fluid leakage inspection from the header portion to the gap portion between the cores is performed. Therefore, it is desirable that the spacer portion has a shape capable of easily detecting fluid leakage from the header portion to the core in the leakage inspection.
- the present invention has been made to solve the above-described problems, and one object of the present invention is to easily detect a fluid leakage from the header portion to the core, and It is an object of the present invention to provide a heat exchanger having a spacer portion that can sufficiently withstand stress under operating conditions having a large temperature difference from the low temperature side.
- a heat exchanger includes a plurality of cores in which flow path portions for circulating a plurality of types of fluids are alternately stacked, and a joint surface between adjacent cores. And a spacer portion fixed integrally with the cores on both sides by welding, and the spacer portion includes an outer peripheral portion provided circumferentially along the outer peripheral edge of the joint surface of the core, and a circumferential outer periphery. And a gap provided in a partial region of the part, and the gap is provided at a position where the temperature gradient on the joint surface of the core is relatively gentle.
- the heat exchanger is provided in the outer peripheral portion provided circumferentially along the outer peripheral edge of the joint surface of the core and in a partial region of the peripheral outer peripheral portion.
- the temperature gradient at the joint surface of the core is relatively gentle.
- the end of the welded part can also be arranged at a position where the temperature gradient is relatively gentle.
- the end of the welded part can be placed in a region of the joint surface where the stress due to deformation due to temperature change is relatively small, so even if the stress is concentrated on the end of the welded part Can be prevented from increasing.
- the bonding strength between the spacer portion and the core can be improved, and an increase in stress at the end portion (gap portion) of the welded portion can be suppressed. It can sufficiently withstand stress under operating conditions with large differences.
- the spacer portion includes a first spacer having a rectangular plate shape provided in an outer peripheral edge of the joint surface of the core and an inner region of the outer peripheral edge of the joint surface. If comprised in this way, compared with the structure which provides a spacer only in the outer periphery of the joint surface of a core, the rigidity of 1st spacer itself can be improved. Thereby, the spacer portion (first spacer) itself can be made strong against an increase in stress accompanying deformation of the joint surface of the core.
- the joint surface of the core has a rectangular shape
- the outer peripheral portion of the first spacer having the rectangular plate shape is arranged along three sides of the outer peripheral edge of the joint surface of the core. If comprised in this way, while being able to provide a large rectangular plate-shaped 1st spacer, the welding site
- the spacer portion includes the first spacer having a rectangular plate shape
- the first header portion provided on the first side surface orthogonal to the bonding surface, and the first side surface and the bonding surface are orthogonal to each other in the core.
- the second side on the second side surface is formed to have a length equal to or greater than the width of the second header portion and to extend to the gap portion.
- a rectangular-plate-shaped 1st spacer can be functioned as a partition which prevents the leakage of the fluid to the clearance gap between cores in a 1st header part and a 2nd header part.
- leakage fluid passing between the first spacer and the joint surface can be sent to the gap even when there is a welding failure leading to leakage.
- the spacer portion is provided between the pair of first spacers provided on the pair of first side surfaces sandwiching the joint surface and the pair of first spacers on the joint surface of the core.
- a second spacer having a rectangular plate shape arranged with a gap between each of the first spacers. If comprised in this way, a spacer part can be provided in the wide range over the substantially whole surface of the joint surface of a core by a pair of 1st spacer and the 2nd spacer between a pair of 1st spacers, Therefore The whole spacer part The rigidity and the bonding strength with the core can be improved. Even in this case, the fluid leakage generated in each of the pair of first spacers can be detected from the respective gaps between the first spacer and the second spacer, so that the fluid leakage can be easily performed. Can be detected.
- the gap portion is preferably a core
- the joint surface is provided so as to penetrate the region between the first spacer and the second spacer from one second side surface to the other second side surface.
- the gap portion preferably includes a bonding surface in a bonding surface of the core in a region where the temperature gradient is relatively gentle in the bonding surface of the core.
- a rectangular plate-shaped first spacer is provided at a position closer to the first side surface than the first side surface of one of the pair of first side surfaces that are orthogonal and sandwich the bonding surface. Is formed so as to extend from the end portion on the first side surface side to the gap portion on the other first side surface side.
- the heat exchanger further includes a header portion disposed on a side surface different from the bonding surface of the core and provided to cover the flow path portions of the plurality of cores across the spacer portion,
- the gap portion is arranged at a position different from the arrangement region of the header portion and at a position on the header portion side in a region where the temperature gradient on the joint surface of the core is relatively gentle. If comprised in this way, the distance between a header part and a clearance gap part can be made small. For this reason, the fluid which leaked through the spacer part from the header part side can be detected more easily and reliably, suppressing the influence of the temperature change with respect to the edge part (gap part) of a welding site
- leakage of fluid from the header portion to the core can be easily detected, and sufficient stress can be obtained under operating conditions where the temperature difference between the high temperature side and the low temperature side is large. It is possible to provide a heat exchanger provided with a spacer portion that can withstand the above.
- the heat exchanger 100 includes a plurality of cores 1, header sections 2 (header sections 2a to 2d), and spacer sections 3.
- the core 1 has, for example, two types of flow path portions 14 through which the first fluid on the high temperature side and the second fluid on the low temperature side respectively flow, and between the first fluid and the second fluid. It is configured to exchange heat.
- flow path portions 14 through which a plurality of types of fluid are circulated are alternately stacked.
- the core 1 is comprised from the plate fin type
- Each flow path of the flow path section 14 is formed in a region surrounded by the fins 11 and the separate plate 12.
- side bars 13 are disposed on both sides of the outer peripheral portion of the fin 11. Each layer defined by the separate plate 12 and the side bar 13 constitutes one flow path portion 14.
- the fin 1, the separate plate 12, and the side bar 13 are joined together by brazing, whereby the core 1 is configured.
- each core 1 has a rectangular parallelepiped shape.
- a spacer portion 3 is disposed between the cores 1 adjacent to each other.
- the core 1 includes a bonding surface 1a facing the adjacent core 1, a pair of first side surfaces 1b orthogonal to the bonding surface 1a, and a pair of second side surfaces 1c orthogonal to the first side surface 1b and the bonding surface 1a. It is out. All of the joint surface 1a, the first side surface 1b, and the second side surface 1c have a rectangular shape.
- the plurality of cores 1 are integrated by welding the joint surfaces 1 a of the cores 1 adjacent to each other via the spacer portion 3.
- the direction in which the cores 1 are adjacent will be referred to as the X direction, the direction along the longitudinal side of the joint surface 1a as the Z direction, and the direction along the short side of the joint surface 1a as the Y direction. To do.
- the joint surface 1 a of the core 1 is a flat surface made of the outer surface of the separate plate 12 located on the outermost side of the core 1.
- end portions of the plurality of flow path portions 14 are exposed over the entire surface of the first side surface 1b. Further, end portions of the plurality of flow path portions 14 are exposed side by side along the X direction on the pair of second side surfaces 1c.
- the channel portion 14 is exposed at the end portion on the Z1 side
- the second side surface 1c on the Y2 side the channel portion 14 is exposed at the end portion on the Z2 side.
- header portions 2 are arranged on the first side surface 1b (header portions 2a and 2b) and the second side surface 1c (header portions 2c and 2d) different from the joint surface 1a of the core 1. ing.
- These header portions 2 (2a to 2d) are provided so as to cover the flow path portions 14 (see FIG. 2) of the plurality of cores 1 across the spacer portion 3.
- Each header portion 2 (2a to 2d) is configured to introduce or lead a fluid to each flow passage portion 14 of the plurality of cores 1 at a time.
- Each header portion 2 (2a to 2d) is attached to the first side surface 1b or the second side surface 1c by welding.
- the header portions 2a and 2b are examples of the “first header portion” in the present invention.
- the header portions 2c and 2d are examples of the “second header portion” in the present invention.
- the header portion 2a is provided on the first side surface 1b on one end side (Z1 side) in the longitudinal direction of the core 1, and the header portion 2b is provided on the first side surface 1b on the other end side (Z2 side) in the longitudinal direction of the core 1. It has been. Since the flow path portion 14 is provided on the entire first side surface 1b, the header portions 2a and 2b are provided so as to cover the entire surface of the first side surface 1b.
- the header part 2a is provided with an outflow inlet 21a through which fluid flows in or out
- the header part 2b is provided with an outflow inlet 21b through which fluid flows in or out.
- the header portion 2c is provided on the second side surface 1c on the one end side (Y1 side) in the short direction of the core 1, and the header portion 2d is the second side surface 1c on the other end side (Y2 side) in the short direction of the core 1. Is provided. These header portions 2c and 2d are provided so as to cover only the portion of the second side surface 1c where the flow path portion 14 is exposed.
- the header portion 2c is provided with an outlet 21c through which fluid flows in or out
- the header portion 2d is provided with an outlet 21d through which fluid flows in or out.
- the spacer part 3 is arrange
- the spacer portion 3 includes an outer peripheral portion 3a provided circumferentially along the outer peripheral edge of the bonding surface 1a of the core 1, and gap portions 3b and 3c provided in a partial region of the circumferential outer peripheral portion 3a. Contains.
- the spacer portion 3 is constituted by three members, ie, two first spacers 30a and 30b and one second spacer 30c.
- the first spacers 30 a and 30 b and the second spacer 30 c have a thickness that is substantially the same as the thickness of the separate plate 12 or smaller than the thickness of the separate plate 12.
- FIGS. 1 to 3 exaggerate the thicknesses of the first spacers 30a and 30b and the second spacer 30c.
- the first spacers 30a and 30b and the second spacer 30c are arranged apart from each other in the longitudinal direction (Z direction) of the joint surface 1a (see FIG. 3).
- the gaps 3b and 3c are formed by the gap between the spacers 30a and 30b and the second spacer 30c.
- the outer peripheral part 3a of the spacer part 3 points out the whole part along the outer periphery of the joint surface 1a among the outer peripheral parts (side) of each 1st spacer 30a, 30b and the 2nd spacer 30c. Since the spacer portion 3 is welded in a state of being sandwiched between the joint surfaces 1a of the adjacent cores 1, only the outer peripheral portion 3a along the outer peripheral edge of the joint surface 1a is welded. Of the sides of the first spacers 30a and 30b and the second spacer 30c, the sides arranged inside the joint surface 1a are not welded. In actuality, as shown in FIG.
- the outer peripheral portion 3a of the spacer portion 3 is not flush with the outer peripheral edge of the joint surface 1a, but is arranged at a position slightly shifted inward from the outer peripheral edge. The That is, in a state where the spacer portion 3 is sandwiched between the joint surfaces 1a, the outer peripheral portion 3a of the spacer portion 3 constitutes the bottom surface of the groove that is slightly recessed with respect to the first side surface 1b and the second side surface 1c. The filler material (welding rod) is allowed to enter the groove.
- the first spacers 30a and 30b have a rectangular plate shape provided in the outer peripheral edge of the joint surface 1a of the core 1 and the inner region of the outer peripheral edge of the joint surface 1a. Further, the outer peripheral portions of the first spacers 30 a and 30 b are arranged along the three sides of the outer peripheral edge of the bonding surface 1 a of the core 1. Specifically, the first spacers 30a and 30b are provided along the outer peripheral edge on the first side face 1b side of the joint surface 1a and the outer peripheral edges on the second side face 1c side.
- the first side 31 of the first spacers 30a and 30b is substantially equal to the width W1 of the header portion 2a (2b).
- the second side 32 of the first spacer 30a has a length larger than the width W2 in the Z direction along the second side surface 1c of the header portion 2c, and a gap portion from the end on the first side surface 1b side. It is formed to extend to 3b.
- the second side 32 of the first spacer 30b has a length larger than the width W2 in the Z direction along the second side surface 1c of the header portion 2d, and a gap portion from the end portion on the other first side surface 1b side. It is formed to extend to 3c.
- the inner sides 33 of the first spacers 30a and 30b are along the gaps 3b and 3c, respectively.
- the first spacer 30a has a gap CL (arrangement region of the spacer portion 3) between the internal space of the header portion 2a and the joint surface 1a of the core 1 by the first side 31 (and the welded portion of the first side 31). Functions as a partition wall that partitions the internal space of the header portion 2c and the gap CL between the joint surfaces 1a of the core 1 by the second side 32 (and the welded portion of the second side 32) on the Y1 side.
- the first spacer 30b functions as a partition that partitions the internal space of the header portion 2b and the gap CL between the joint surfaces 1a of the core 1 by the first side 31 (and the welded portion), and the second side on the Y2 side. It functions as a partition partitioning the internal space of the header portion 2d and the gap CL between the joint surfaces 1a of the core 1 by 32 (and the welded portion).
- the second spacer 30c is provided between the pair of first spacers 30a and 30b.
- the second spacer 30c is disposed so as to be separated from the pair of first spacers 30a and 30b via the gap portions 3b and 3c, respectively.
- the pair of sides 35 extending in the Z direction of the second spacer 30c is along the outer peripheral edge (side) on the second side surface 1c side of the joint surface 1a, and the length in the Z direction is between the gap portion 3b and the gap portion 3c. Is equal to the distance between
- the outer peripheral portion 3a of the spacer portion 3 includes the first side 31 and the second side 32 of the first spacers 30a and 30b, and the side 35 extending in the Z direction of the second spacer 30c. As a whole, it is formed in a circumferential shape over substantially the entire circumference of the outer peripheral edge of the joint surface 1a (the entire circumference excluding the gap portions 3b and 3c).
- part of the core 1 and the spacer part 3 is the substantially whole periphery of the outer periphery of the joint surface 1a except the part of the clearance gaps 3b and 3c. That is, the weld line formed by welding is interrupted at the gap portions 3b and 3c. In other words, the end portion (start point or end point) of the welded portion is located in the gap portions 3b and 3c.
- the gaps 3b and 3c are provided at positions where the temperature gradient on the joint surface 1a of the core 1 is relatively gentle.
- the temperature gradient differs depending on the operating conditions of the heat exchanger 100 (temperatures of two types of fluids (inlet temperature, outlet temperature), types of fluid, flow rate, operating pressure, etc.). Therefore, the temperature gradient is obtained by a simulation or the like according to these operating conditions.
- FIG. 7 shows an example of the temperature gradient in the Z direction (longitudinal direction of the core 1) at the center in the Y direction.
- the Z-direction position is displayed as a percentage with the Z2 side end portion of the bonding surface 1 a being 0% and the Z1 side end portion being 100%.
- the vertical axis represents absolute temperature (K), and it can be seen that the smaller the slope of the graph, the gentler the temperature gradient in the Z direction.
- the temperature gradient is relatively gentle (the inclination is small) in the regions indicated by A1 and A2 as compared with other portions.
- the positions of the gaps 3b and 3c correspond to the positions P1 and P2 in the area A1 and the area A2, respectively. For example, when there are three or more regions where the temperature gradient is gradual, or when there are regions where the temperature gradient is gradual over a wide range, the gap portions 3b and 3c are formed in the header portion 2 (2a to 2d).
- the arrangement area of the header part 2 corresponds to each range of the width W2 (header part 2d) on the Z2 side and the width W2 (header part 2c) on the Z1 side. In this manner, the arrangement positions of the gap portions 3b and 3c are determined.
- the arrangement positions of the gap portions 3b and 3c are the same distances from the first side surface 1b on the Z1 side and the first side surface 1b on the Z2 side, respectively.
- the arrangement positions of 3c may be completely different from each other. For this reason, the length of the second side 32 of the first spacer 30a may be different from the length of the second side 32 of the first spacer 30b.
- the gaps 3b and 3c penetrate the region between the first spacers 30a and 30b and the second spacer 30c from one second side surface 1c to the other second side surface 1c on the bonding surface 1a of the core 1. It is provided as follows. As shown in FIG. 5, the gap portions 3b and 3c have a groove width W3 smaller than the width W1 of the header portion 2a (2b), the width W2 of the header portion 2c (2d), and the lengths of the sides 32 and 35. And provided so as to extend linearly in the Y direction. The groove width W3 of the gaps 3b and 3c is smaller than the width of the region (A1, A2 in FIG. 7) where the temperature gradient is relatively gentle, and the region (A1, A2 in FIG.
- both ends of the gap portions 3b and 3c in the width direction are arranged so as to be within the space.
- the groove widths of the gaps 3b and 3c may be different from each other.
- the welded portion of the first side 31 and the second side 32 has a gap CL (spacer portion) between the internal space of the header portion 2 (2a to 2d) and the joint surface 1a of the core 1. 3 arrangement region).
- CL spacer portion
- the internal space of the header portion 2 communicates with the clearance CL between the joint surfaces 1a of the core 1, and the clearance CL between the internal space of the header portion 2 and the joint surface 1a of the core 1 ( In some cases, leakage of fluid to the arrangement region of the spacer portion 3 may occur.
- the leaking fluid is the joint surface 1a and the first spacer. It passes through a minute gap formed between 30a and 30a. However, since the other part of the outer peripheral portion of the first spacer 30a is welded, the leaked fluid can only leak to the Z2 side and reaches the gap 3b. Since the gap 3b is a linear flow path, it is possible to easily determine that the fluid has leaked from the first spacer 30a by detecting the fluid flowing out of the gap 3b. Similarly, when a welding failure that leads to leakage occurs in the first spacer 30b, the leaked fluid reaches the gap portion 3c, so that the fluid leaks easily from the first spacer 30b through the gap portion 3c. It can be determined.
- the cover plate 5 includes a detection hole 5a that can be opened and closed, and the detection hole 5a is normally closed. In the leak inspection, the detection hole 5a of the cover plate 5 is opened, and the leaked fluid can be detected through the detection hole 5a.
- the first fluid flows into the outflow inlet 21a of the header portion 2a. Then, the first fluid flowing in from the header portion 2a flows vertically downward (Z2 direction) through the core 1 (flow path portion 14), and flows in an L shape in the Y2 direction side, thereby flowing out the inlet 21d of the header portion 2d. Spill from. Further, the second fluid flows into the outflow / inlet 21c of the header portion 2c. And the 2nd fluid which flowed in from the header part 2c flows into the L1 shape vertically downward (Z2 direction) while flowing through the core 1 (flow-path part 14) to the Y2 direction side, and the outflow inlet of the header part 2b It flows out from 21b.
- the outer peripheral portion 3a provided circumferentially along the outer peripheral edge of the joint surface 1a of the core 1, and the gap provided in a partial region of the peripheral outer peripheral portion 3a.
- the spacer portions 3 With the spacer portions 3 with the portions 3b and 3c, while securing the gap portions 3b and 3c, the welded portion between the spacer portion 3 and the core 1 (that is, the outer peripheral portion 3a of the spacer portion 3) is connected to the bonding surface 1a. It can be formed in a circumferential shape along the outer peripheral edge.
- the gap portions 3b and 3c are connected to the joint surface 1a of the core 1. Is provided at a position where the temperature gradient is relatively gentle (regions A1 and A2 in FIG. 7), so that the end portions (gap portions 3b and 3c) of the welded portion are also arranged at positions where the temperature gradient is relatively gentle. Can do.
- the end of the welded part can be arranged in a region of the joint surface 1a where the stress resulting from the deformation caused by the temperature change is relatively small, so even if the stress is concentrated on the end of the welded part.
- An increase in stress can be suppressed.
- the bonding strength between the spacer portion 3 and the core 1 can be improved, and an increase in stress at the end portions (gap portions 3b and 3c) of the welded portion can be suppressed. It can sufficiently withstand stress under operating conditions where the temperature difference between the low temperature side is large.
- the first spacers 30a and 30b having the rectangular plate shape provided in the outer peripheral edge of the joint surface 1a of the core 1 and the inner region of the outer peripheral edge of the joint surface 1a are replaced with the spacer portion 3.
- the spacer part 3 (1st spacer 30a and 30b) itself can be strengthened with respect to the increase in the stress accompanying the deformation
- the outer peripheral portions (the first side 31 and the second side 32) of the first spacers 30a and 30b having the rectangular plate shape are connected to the outer peripheral edge 3 of the joint surface 1a of the core 1. Arrange along the side. Thereby, the large rectangular plate-shaped first spacers 30a and 30b can be provided, and the welded portions of the first spacers 30a and 30b can be provided in a wide range over the three outer peripheral edges of the joint surface 1a of the core 1. Can be formed. As a result, the rigidity of the first spacers 30a and 30b itself and the bonding strength between the first spacers 30a and 30b and the core 1 can be further improved.
- the edge part of the flow-path part 14 vicinity of the joint surface 1a may deform
- transformation at the time of welding of the edge part of the flow-path part 14 can also be suppressed as a result of the rigidity improvement of the 1st spacers 30a and 30b.
- the first spacer 30a (30b) having the rectangular plate shape is configured such that the first side 31 on the first side surface 1b side is the width of the header portion 2a (2b) on the bonding surface 1a.
- the second side 32 on the second side surface 1c side has a length equal to or greater than W1 and has a length equal to or greater than the width W2 of the header portion 2c (2d) and extends to the gap portion 3b (3c).
- a rectangular plate-shaped second spacer 30c arranged on the first spacers 30a and 30b via the gaps 3b and 3c is provided in the spacer 3.
- the gaps 3b and 3c are arranged on the bonding surface 1a of the core 1 so that the region between the first spacers 30a and 30b and the second spacer 30c is one second side surface. It is provided so as to penetrate from 1c to the other second side surface 1c. Accordingly, the gaps 3b and 3c as the flow paths for detecting the leaked fluid can be made simple, and the leaked fluid can be quickly guided to the outside of the gaps 3b and 3c. Can be easily detected.
- the gaps 3b and 3c are located at positions different from the arrangement region of the header 2 (2a to 2d) and the temperature gradient at the joint surface 1a of the core 1 is relatively low. In a moderately loose area, it is arranged at a position on the header part 2 (2a to 2d) side. Thereby, the distance between the header portion 2 (2a to 2d) and the gap portions 3b and 3c can be reduced. For this reason, the fluid leaking from the header part 2 (2a to 2d) side through the spacer part 3 can be more easily and reliably suppressed while suppressing the influence of the temperature change on the end parts (gap parts 3b and 3c) of the welded part. Can be detected.
- a second embodiment will be described with reference to FIG.
- An example of 200 will be described. Note that, in the heat exchanger 200 according to the second embodiment, the configuration other than the configuration of the spacer portion 103 is the same as that of the first embodiment. Omitted.
- the spacer portion 103 of the heat exchanger 200 includes a rectangular plate-shaped first spacer 130, an L-shaped spacer 140, and a linear spacer 150. Yes.
- the gaps 103b and 103c are both disposed closer to the first side surface 1b on the other end side (Z2 side) than the one end side (Z1 side) in the longitudinal direction of the core 1. Yes.
- the first spacer 130 is provided on the outer peripheral edge of the joint surface 1a of the core 1 and the inner region of the outer peripheral edge.
- the outer peripheral portion of the first spacer 130 includes an outer peripheral edge (side) on the first side surface 1b side on the Z1 side and an outer peripheral edge (side) on both the second side surfaces 1c side of the bonding surface 1a of the core 1. It is provided along.
- the first side 131 on the first side surface 1b side of the first spacer 130 has a width W1 of the header portion 2a (that is, the total length in the Y direction (short direction of the core 1) of the first side surface 1b). Have substantially equal lengths.
- the second side 132 on the second side surface 1c side of the first spacer 130 has a length larger than the width W2 in the Z direction (longitudinal direction of the core 1) of the header portion 2c, and is on the one first side surface 1b side. It is formed so as to extend from the end to the gap 103b. Unlike the first embodiment, the second side 132 has a length that is half or more of the outer peripheral edge on the second side surface 1c side that extends in the Z direction.
- the L-shaped spacer 140 is provided along the two sides of the outer peripheral edge on the Z2 side first side surface 1b side and the outer peripheral edge on the second side surface 1c side on the Y2 side of the joint surface 1a of the core 1. It has been. Therefore, the spacer 140 is provided along the outer peripheral edge of the bonding surface 1a of the core 1, and is not provided in the inner region of the outer peripheral edge.
- the side 141 on the first side surface 1b side of the spacer 140 has a length substantially equal to the width W1 of the header portion 2a (that is, the total length of the first side surface 1b in the Y direction).
- the side 142 on the second side surface 1c side of the spacer 140 has a length larger than the width W2 of the header portion 2d, and is formed so as to extend from the end portion on the first side surface 1b side on the Z2 side to the gap portion 103b. Yes.
- the linear spacer 150 has a thin plate shape provided along the outer peripheral edge (side) on the second side surface 1c side on the Y1 side of the joint surface 1a of the core 1. Therefore, the spacer 150 is provided along the outer periphery of the joint surface 1a of the core 1, and is not provided in the inner region of the outer periphery.
- the side 151 of the spacer 150 is formed so as to extend in the Z direction from the gap 103b to the gap 103c.
- the first spacer 130 functions as a partition that partitions the internal space of the header portion 2a and the gap CL between the joint surfaces 1a of the core 1 and between the internal space of the header portion 2c and the joint surface 1a of the core 1. It functions as a partition partitioning the gap CL.
- the spacer 140 functions as a partition wall that partitions the internal space of the header portion 2b and the gap CL between the joint surfaces 1a of the core 1, and the gap CL between the internal space of the header portion 2d and the joint surface 1a of the core 1 Functions as a partition wall.
- the outer peripheral portion 103 a of the spacer portion 103 is configured by the first side 131 and the second side 132 of the first spacer 130, the side 141 and the side 142 of the spacer 140, and the side 151 of the spacer 150. As a whole, it is formed in a circumferential shape over substantially the entire circumference of the outer peripheral edge of the joint surface 1a (the entire circumference excluding the gap portions 103b and 103c).
- the gaps 103b and 103c are a pair of first surfaces that are orthogonal to the bonding surface 1a and sandwich the bonding surface 1a in a relatively gentle region of the bonding surface 1a of the core 1 in the bonding surface 1a of the core 1. It is provided at a position closer to the first side surface 1b on the other side (Z2 side) than the first side surface 1b on one side (Z1 side) of the one side surface 1b.
- the gap portion 103b is located on the Z1 side of the header portion 2d, and is provided at a position close to the header portion 2d in a region where the temperature gradient is relatively gentle in the bonding surface 1a of the core 1. .
- the gap 103c is disposed on the Y1 side opposite to the header 2d and in the vicinity of the first side surface 1b on the Z2 side.
- the gap portions 103b and 103c have a width W1 of the header portion 2a (2b), a width W2 of the header portion 2c (2d), and groove widths W4 and W5 smaller than the lengths of the side 132, the side 142, and the side 151, respectively.
- a space surrounded by the first spacer 130 and the spacers 140 and 150 is formed in the inner region of the bonding surface 1a, and the gaps 103b and 103c communicate with each other.
- the groove width W4 of the gap portion 103b and the groove width W5 of the gap portion 103c are each smaller than the width of the region where the temperature gradient is relatively gentle, and the gap portion so as to be within the region where the temperature gradient is relatively gentle. It is preferable that both ends in the width direction of 103b and 103c (end portions of the welded portions) are arranged.
- the outer peripheral part 103a provided circumferentially along the outer periphery of the joint surface 1a of the core 1, and the gap
- the gaps 103b and 103c are provided at positions where the temperature gradient on the bonding surface 1a of the core 1 is relatively gentle.
- the gaps 103b and 103c are arranged on the first side surface 1b on one side (Z1 side) in the region where the temperature gradient is relatively gentle on the bonding surface 1a of the core 1. Rather than the other side (Z2 side) of the first side face 1b. Then, the first spacer 130 having a rectangular plate shape is arranged such that, on the joint surface 1a of the core 1, the gap portion 103b on the first side surface 1b side on the other side (Z2 side) from the end portion on the first side surface 1b side on one side (Z1 side). It is formed to extend up to.
- the large first spacer 130 can be provided over a wide range from the end portion on the first side surface 1b side of one (Z1 side) to the gap portion 103b on the first side surface 1b side of the other side (Z2 side). Therefore, the rigidity of the first spacer 130 can be further improved. Even in this case, since the leakage from the welded portion of the first spacer 130 can be confirmed only by detecting the fluid in the gaps 103b and 103c, the leakage of the fluid can be easily detected.
- the spacer portion 203 shown in FIG. 11 was also examined as a comparative example.
- the comparative example is an example in which two L-shaped spacers 230a and 230b are provided so as to cover only the installation portion (see FIG. 5) of the header portion 2 (2a to 2d).
- the spacer 230a is provided along the outer periphery corresponding to the header parts 2a and 2c (refer FIG. 5) among the joining surfaces 1a.
- the spacer 230b is provided along the outer periphery corresponding to the header parts 2b and 2d (refer FIG. 5) among the joining surfaces 1a.
- FIG. 10 and FIG. 11 are respectively the temperature distribution of the spacer section 3 of the heat exchanger 100 according to the first embodiment, the temperature distribution of the spacer section 103 of the heat exchanger 200 according to the second embodiment, and a comparative example. It is the temperature distribution of the spacer part 203.
- the absolute temperature range from less than 340K to 700K is divided into 10 steps for every 40K, and different hatching is given for each step.
- the temperature distribution of each spacer portion in FIGS. 9, 10 and 11 is substantially the same.
- the gaps 3b and 3c (103b and 103c) are arranged so as to be within the same region of the temperature range, and the gaps 3b and 3c (103b) are located at positions where the temperature gradient is gentle. And 103c) are arranged.
- FIGS. 12, 13 and 14 show the stress distribution of the spacer portion 3 of the heat exchanger 100 according to the first embodiment, the stress distribution of the spacer portion 103 of the heat exchanger 200 according to the second embodiment, and a comparative example, respectively. It is a stress distribution of the spacer part 203.
- the stress ranges from less than 30 MPa (S1) to 270 MPa or more (S10) in 10 steps (S1 to S10) every 30 MPa, and is shown with different hatching for each step.
- the end portion C (welding start point or end point) of the welded portion has the lowest strength.
- the end C of the welded portion is the position of the gap portions 3b and 3c, in FIG. 13 (spacer portion 103), the positions of the gap portions 103b and 103c, and in FIG. It becomes the both ends of 230a (230b).
- the stress is less than 120 MPa in the gaps 3b and 3c. It is suppressed to the level of ⁇ S4.
- the gap portions 103b and 103c are both suppressed to a level of S1 to S5 where the stress is less than 150 MPa.
- the stress is S10 (270 MPa or more) at both ends of each spacer 230a (230b), particularly at the Y2 side end of the spacer 230a and the Y1 side end of the spacer 230b. It can be seen that the level rises to
- the stress in the gaps (3b, 3c, 103b and 103c) is reduced, It can sufficiently withstand stress under operating conditions where the temperature difference between the low temperature side and the low temperature side is large.
- the first spacers 30a and 30b and the second spacer 30c of the heat exchanger 100 according to the first embodiment and the heat exchanger 200 according to the second embodiment are identical to the first spacer 130.
- the rigidity of the spacer itself is improved. For this reason, about these spacers, it is possible to endure higher stress also in parts other than the edge part of a welding part.
- the first embodiment shows an example in which a total of four gaps 3b and 3c are provided on the outer periphery of the joint surface
- the second embodiment provides a total of three gaps 103b and 103c on the outer periphery of the joint surface.
- the number of gaps at the outer peripheral edge may be 1 or 2 or may be 5 or more.
- the gaps 3b and 3c are linearly provided so as to penetrate from the second side surface to the other second side surface.
- the present invention is not limited to this. Absent.
- the gaps may be provided on both sides of the second side surface without penetrating. Further, the gap portion may be provided in a curved shape.
- the first spacer may have a shape other than a rectangle.
- the shape of the inner portion (side 33, see FIG. 5) that does not follow the outer peripheral edge of the joint surface is arbitrary.
- the first spacer may have a shape along only two sides of the outer peripheral edge.
- the example in which the length of the first side (31, 131) of the first spacer is substantially equal to the total length of the outer peripheral edge on the first side surface side is shown. Not limited to.
- the header part is attached only to a part of the first side surface, if the length of the first side of the first spacer is equal to or larger than the width of the header part, it is smaller than the total length of the outer peripheral edge on the first side surface side. Also good. That is, as shown in FIG. 5, in the first spacers 30a and 30b, the first side 31 on the first side surface 1b side has a length equal to or greater than the width W1 of the header portion 2a (2b). Just do it. The same applies to the first spacer 130 shown in FIG.
- the example which comprised the spacer part 3 by the total three members of two 1st spacers 30a and 30b and one 2nd spacer 30c is shown, In the said 2nd Embodiment, one 1st 1st is shown.
- the spacer portion 103 is configured by the total of three members including the spacer 130 and the two spacers 140 and 150 has been shown, the present invention is not limited to this. In the present invention, any number of spacers may be included in the spacer portion.
Abstract
Description
まず、図1~図7を参照して、本実施形態による熱交換器100の構成について説明する。
次に、図8を参照して、第2実施形態について説明する。この第2実施形態では、矩形板形状の第1スペーサ30aおよび30bと矩形板形状の第2スペーサ30cとによりスペーサ部3を構成した上記第1実施形態と異なるスペーサ部103を設けた熱交換器200の例について説明する。なお、第2実施形態による熱交換器200のうち、スペーサ部103の構成以外の構成は上記第1実施形態と同様であるので、第1実施形態と同じ符号を付して図示するとともに説明を省略する。
次に、上記第1実施形態による熱交換器100および上記第2実施形態による熱交換器200の効果を説明するためのシミュレーション結果について説明する。ここでは、高温側と低温側とで温度差が大きい運転条件の一例として、図7に示した熱交換器のZ方向の温度勾配の例における、スペーサ部に働く応力分布のシミュレーションについて説明する。
1a 接合面
1b 第1側面
1c 第2側面
2 ヘッダ部
2a、2b ヘッダ部(第1ヘッダ部)
2c、2d ヘッダ部(第2ヘッダ部)
3、103 スペーサ部
3a、103a 外周部
3b、3c、103b、103c 間隙部
14 流路部
30a、30b、130 第1スペーサ
30c 第2スペーサ
31、131 第1辺
32 132 第2辺
W1 ヘッダ部の幅
W2 ヘッダ部の幅
100、200 熱交換器
Claims (8)
- 複数種類の流体を流通させる流路部が交互に積層された複数のコアと、
互いに隣接する前記コア同士の接合面間に配置され、溶接により両側の前記コアと一体的に固定されたスペーサ部とを備え、
前記スペーサ部は、前記コアの接合面の外周縁に沿って周状に設けられた外周部と、周状の前記外周部の一部の領域に設けられた間隙部とを含み、
前記間隙部は、前記コアの接合面における温度勾配が相対的に緩やかな位置に設けられている、熱交換器。 - 前記スペーサ部は、前記コアの接合面の外周縁および前記接合面の外周縁の内側領域に設けられた矩形板形状の第1スペーサを含む、請求項1に記載の熱交換器。
- 前記コアの接合面は矩形形状を有し、
前記矩形板形状の第1スペーサの外周部は、前記コアの接合面の外周縁の3辺に沿うように配置されている、請求項2に記載の熱交換器。 - 前記コアのうち、前記接合面と直交する第1側面に設けられた第1ヘッダ部と、前記第1側面および前記接合面と直交する第2側面に設けられた第2ヘッダ部とをさらに備え、
前記矩形板形状の第1スペーサは、前記接合面において、前記第1側面側の第1辺が前記第1ヘッダ部の幅以上の長さを有し、前記第2側面側の第2辺が前記第2ヘッダ部の幅以上の長さを有するとともに前記間隙部まで延びるように形成されている、請求項2に記載の熱交換器。 - 前記スペーサ部は、前記コアの接合面において、前記接合面を挟む一対の前記第1側面側にそれぞれ設けられた一対の前記第1スペーサと、一対の前記第1スペーサの間に設けられ、前記一対の第1スペーサそれぞれに対して前記間隙部を介して配置された矩形板形状の第2スペーサとを含む、請求項4に記載の熱交換器。
- 前記間隙部は、前記コアの接合面において、前記第1スペーサと前記第2スペーサとの間の領域を一方の前記第2側面から他方の前記第2側面まで貫通するように設けられている、請求項5に記載の熱交換器。
- 前記間隙部は、前記コアの接合面において、温度勾配が前記コアの接合面内で相対的に緩やかな領域のうち、前記接合面と直交するとともに前記接合面を挟む一対の第1側面のうちの一方の前記第1側面よりも他方の前記第1側面に近い位置に設けられ、
前記矩形板形状の第1スペーサは、前記コアの接合面において、前記一方の第1側面側の端部から前記他方の第1側面側の前記間隙部まで延びるように形成されている、請求項2に記載の熱交換器。 - 前記コアの接合面とは異なる側面に配置され、前記スペーサ部を跨いで複数の前記コアの前記流路部を覆うように設けられたヘッダ部をさらに備え、
前記間隙部は、前記ヘッダ部の配置領域とは異なる位置で、かつ、前記コアの接合面における温度勾配が相対的に緩やかな領域のうちで前記ヘッダ部側の位置に配置されている、請求項1に記載の熱交換器。
Priority Applications (4)
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CN201580012691.XA CN106104191A (zh) | 2014-03-20 | 2015-03-16 | 热交换器 |
EA201691873A EA031805B1 (ru) | 2014-03-20 | 2015-03-16 | Теплообменник |
US15/127,050 US9927184B2 (en) | 2014-03-20 | 2015-03-16 | Heat exchanger |
EP15765859.2A EP3121550A4 (en) | 2014-03-20 | 2015-03-16 | Heat exchanger |
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JP2014057390A JP6391264B2 (ja) | 2014-03-20 | 2014-03-20 | 熱交換器 |
JP2014-057390 | 2014-03-20 |
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WO2015141634A1 true WO2015141634A1 (ja) | 2015-09-24 |
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PCT/JP2015/057732 WO2015141634A1 (ja) | 2014-03-20 | 2015-03-16 | 熱交換器 |
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US (1) | US9927184B2 (ja) |
EP (1) | EP3121550A4 (ja) |
JP (1) | JP6391264B2 (ja) |
CN (1) | CN106104191A (ja) |
EA (1) | EA031805B1 (ja) |
WO (1) | WO2015141634A1 (ja) |
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EP3217132A1 (en) * | 2016-03-07 | 2017-09-13 | Bosal Emission Control Systems NV | Plate heat exchanger and method for manufacturing a plate heat exchanger |
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NL2013565B1 (en) * | 2014-10-02 | 2016-09-07 | 2Ndair B V | Air-conditioner module and use thereof. |
KR101858514B1 (ko) * | 2017-01-25 | 2018-05-17 | 대우조선해양 주식회사 | Lng 선의 증발가스 재액화 방법 및 시스템 |
JP6347003B1 (ja) | 2017-01-25 | 2018-06-20 | デウ シップビルディング アンド マリン エンジニアリング カンパニー リミテッド | Lng船の蒸発ガス再液化方法及びシステム |
CN106949760B (zh) * | 2017-05-05 | 2023-08-08 | 江苏宝得换热设备股份有限公司 | 板管式换热器 |
EP3557175B1 (en) | 2018-04-19 | 2021-06-09 | Bosal Emission Control Systems NV | Heat exchanger and method for manufacturing a heat exchanger core with manifold |
KR20230023178A (ko) * | 2021-08-10 | 2023-02-17 | 한국원자력연구원 | 인쇄기판형 열교환기 |
FR3131626B1 (fr) * | 2021-12-30 | 2024-01-12 | Fives Cryo | Echangeur à plaques brasées avec compartiments obturés aptes à se déformer localement |
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Also Published As
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EA201691873A1 (ru) | 2017-02-28 |
CN106104191A (zh) | 2016-11-09 |
EA031805B1 (ru) | 2019-02-28 |
US20170108284A1 (en) | 2017-04-20 |
US9927184B2 (en) | 2018-03-27 |
JP2015178944A (ja) | 2015-10-08 |
EP3121550A1 (en) | 2017-01-25 |
EP3121550A4 (en) | 2017-03-29 |
JP6391264B2 (ja) | 2018-09-19 |
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