WO2014064812A1 - 熱交換器 - Google Patents
熱交換器 Download PDFInfo
- Publication number
- WO2014064812A1 WO2014064812A1 PCT/JP2012/077641 JP2012077641W WO2014064812A1 WO 2014064812 A1 WO2014064812 A1 WO 2014064812A1 JP 2012077641 W JP2012077641 W JP 2012077641W WO 2014064812 A1 WO2014064812 A1 WO 2014064812A1
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- WO
- WIPO (PCT)
- Prior art keywords
- partition
- heat transfer
- heat
- heat exchanger
- transfer means
- Prior art date
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Classifications
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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
- F28F1/00—Tubular elements; Assemblies of tubular 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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/32—Liquid-cooled heat exchangers
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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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
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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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials
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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
- 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
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
Definitions
- the present invention relates to a heat exchanger.
- Patent Document 1 a first fluid circulation part formed by a honeycomb structure having a plurality of cells through which a heating body as a first fluid circulates, and an outer peripheral part of the first fluid circulation part are provided.
- a heat exchanger having a second fluid circulation part is disclosed. The refrigerant flows through the second fluid circulation portion, takes heat from the heating body that circulates in the first fluid circulation portion, and cools the heating body.
- Patent Document 2 discloses an air-cooled semiconductor heat sink that includes a radial cooling surface and a cooling surface that is integrated with the radial cooling surface and that is concentric with respect to an axis.
- the radial cooling surface and the concentric cooling surface disclosed in Patent Document 2 are easy to secure a heat radiation area, and it is considered effective to be used in combination with the heat exchanger disclosed in Patent Document 1.
- the combination of the radial cooling surface and the concentric cooling surface has room for further improvement in terms of heat transfer efficiency (thermal conductivity) in consideration of the arrangement of the refrigerant and the heating object to be cooled. It was.
- an object is to obtain good thermal conductivity in the heat exchanger disclosed in this specification.
- the heat exchanger disclosed in the present specification is provided in at least one of a heat exchanger through which a fluid to be cooled passes, a center portion and an outer peripheral portion of the heat exchanger, A refrigerant passage through which a refrigerant that exchanges heat with the heat exchange body flows, the heat exchange body extending from a central portion toward an outer peripheral portion, a circumferential direction, and the first heat transfer means.
- a second heat transfer means that intersects with the first heat transfer means.
- the heat transfer efficiency of the first heat transfer means is higher than the heat transfer efficiency of the second heat transfer means.
- the heat transfer efficiency is understood as a value obtained by multiplying the thermal conductivity, which is a physical property value of the material forming the heat exchanger, by the thickness per partition.
- the heat transfer efficiency toward the refrigerant passage is improved by setting the heat flow efficiency in the radial direction, that is, the heat transfer path toward the refrigerant passage provided at the center or outer periphery of the heat exchanger. Thereby, the favorable heat conductivity in a heat exchanger can be obtained and the cooling object can be cooled effectively.
- the first heat transfer means is a first partition that extends radially from the center of the heat exchanger to the outer periphery
- the second heat transfer means is a concentric second partition
- the first The thickness of the partition may be set larger than the thickness of the second partition.
- the concentric partition wall that is, the second partition wall
- the heat transfer efficiency of such a concentric partition wall must be lower than the heat transfer efficiency of the radially extending partition wall, that is, the first partition wall. Therefore, by setting the thickness of the first partition to be greater than the thickness of the second partition, the heat transfer efficiency of the first partition serving as the first heat transfer means is made higher than that of the second partition.
- the first heat transfer means is a first partition that extends radially from the center of the heat exchanger to the outer periphery
- the second heat transfer means is a concentric second partition
- the first The thermal conductivity of the partition wall material may be higher than the thermal conductivity of the second partition wall material.
- the concentric partition wall that is, the second partition wall
- the heat transfer efficiency of such a concentric partition wall must be lower than the heat transfer efficiency of the radially extending partition wall, that is, the first partition wall.
- the first partition is made of a material having a thermal conductivity higher than that of the material forming the second partition, so that the heat transfer efficiency of the first partition serving as the first heat transfer means can be increased. Higher than that.
- the thermal conductivity can be made different between the material forming the first partition and the material forming the second partition. That is, the first partition can be formed of a material having a thermal conductivity higher than that of the material forming the second partition.
- the first heat transfer means is a first partition extending from an inlet side to an outlet side of a fluid to be cooled in the heat exchange body
- the second heat transfer means is a cooling object in the heat exchange body.
- a second partition extending from the inlet side to the outlet side of the fluid, and at least one of the thickness of the first partition and the second partition is made thinner as the thickness goes from the inlet side to the outlet side May be provided.
- the temperature of the fluid to be cooled is higher as it is closer to the inlet of the heat exchanger. Therefore, by increasing the thickness of the first partition and the second partition toward the side closer to the inlet, heat can be easily conducted to the refrigerant passage side, and temperature efficiency is increased.
- the first heat transfer means is a first partition extending from an inlet side to an outlet side of a fluid to be cooled in the heat exchange body
- the second heat transfer means is a cooling object in the heat exchange body.
- a second partition that extends from the inlet side to the outlet side of the fluid, and at least one of the thickness of the first partition and the second partition is made thicker as the thickness goes from the inlet side to the outlet side May be provided.
- FIG. 1 is an explanatory diagram showing a schematic configuration of a heat exchanger according to the first embodiment.
- 2 is a cross-sectional view taken along line AA in FIG.
- FIG. 3 is an explanatory view showing the thicknesses of the first partition and the second partition.
- FIG. 4 is an explanatory view showing a modification in which the density of the second partition is changed.
- FIG. 5 is an explanatory view showing the arrangement of the second partition walls in the modification shown in FIG.
- FIG. 6 is an explanatory view showing a heat exchanger according to the second embodiment.
- FIGS. 7A to 7C are explanatory views showing a heat exchanger according to the third embodiment.
- FIGS. 8A to 8C are explanatory views showing a heat exchanger according to the fourth embodiment.
- FIG. 9 is an explanatory view showing an example in which the cross-sectional shape of the second partition is rectangular.
- FIG. 10 is an explanatory diagram showing an example in which the cross-sectional shape of the second partition wall is a spiral shape.
- FIG. 11 is an explanatory view showing an example in which the cross-sectional shape of the second partition is an elliptical shape.
- FIG. 12 is an explanatory view showing an example in which refrigerant passages are provided in the center portion and the outer peripheral portion of the heat exchanger.
- FIG. 1 is an explanatory diagram showing a schematic configuration of a heat exchanger 1 of the first embodiment.
- 2 is a cross-sectional view taken along line AA in FIG.
- FIG. 3 is an explanatory view showing the thickness of the partition provided in the heat exchanger 1.
- the heat exchanger 1 includes an EGR pipe 2 through which EGR gas flows.
- the EGR pipe is a stainless steel (SUS) pipe material.
- the EGR pipe 2 can also use other materials such as aluminum.
- the heat exchanger 1 includes a housing member 3 that joins an end 3 a to an end 2 a of the EGR pipe 2 and forms a refrigerant passage 4 on the outer periphery of the EGR pipe 2.
- the housing member 3 is also made of stainless steel (SUS).
- the housing member 3 includes a refrigerant inlet 3b1 for introducing the refrigerant into the refrigerant passage 4 and a refrigerant outlet 3b2 for discharging the refrigerant in the refrigerant passage 4.
- cooling water is used.
- a stay 3 c is provided on the outer wall of the housing member 3.
- a heat exchange element 5 arranged in contact with the inner peripheral wall surface 2b of the EGR pipe 2 is accommodated.
- a fluid to be cooled that is, EGR gas in the present embodiment, passes through the heat exchanger 5.
- the heat exchanger 5 is made of silicon carbide (SiC) ceramic.
- the ceramic material has efficient heat conduction and can exhibit high corrosion resistance. For this reason, the ceramic material which has high heat conductivity is suitable as a material of the heat exchange body and coating
- the heat exchange element 5 is formed in a cylindrical shape, and a passage is formed so that EGR gas can pass therethrough.
- the heat exchanger 5 can exchange heat with the refrigerant flowing through the refrigerant passage 4 via the EGR pipe 2. That is, when the EGR gas passes through the heat exchanger 5, the EGR gas exchanges heat with the refrigerant via the heat exchanger 5 and the EGR pipe 2 and is cooled.
- the heat exchanger 5 includes first partition walls 5a extending radially from the center 6 toward the outer periphery as first heat transfer means extending from the center 6 toward the outer periphery. Moreover, the heat exchanger 5 is provided with concentric 2nd partition 5b as a 2nd heat transfer means extended along the circumferential direction and cross
- the central portion 6 is not required to be completely at the center of the heat exchange element 5.
- the 1st partition 5a should just form the heat transfer path
- the shape of the 2nd partition 5b should just be provided with the part continued in the circumferential direction.
- the second partition wall 5b may be circular, elliptical, or rectangular in a cross section orthogonal to the fluid flow direction. Moreover, it is not calculated
- Such a 2nd partition 5b can improve the intensity
- the thickness T1 of the first partition 5a is thicker than the thickness T2 of the second partition 5b.
- the heat transfer efficiency of the first heat transfer means that is, the first partition wall 5a is changed to the second heat transfer efficiency.
- Means that is, higher than the heat transfer efficiency of the second partition wall 5b.
- the second partition wall 5b since the second partition wall 5b is thin, pressure loss can be reduced, which contributes to improvement in thermal efficiency.
- the second partition walls 5b can reduce the thickness of each sheet and increase the number of sheets. If the number of the second partition walls 5b increases, the contact area with the fluid can be further increased. As a result, the temperature efficiency is further improved. Even if the number of the second partition walls 5b is increased, an increase in pressure loss can be suppressed by reducing the thickness of the second partition walls 5b.
- reducing the thickness of each second partition 5b as the number of second partitions 5b increases satisfies the relationship between the thickness of the first partition 5a and the thickness of the second partition 5b. But it ’s convenient. Further, reducing the thickness of the second partition wall 5b is advantageous in securing the EGR gas channel area.
- the comparison between the thickness of the first partition 5a and the thickness of the second partition 5b will be described in more detail. Even if the first partition wall 5a is locally thin and the thickness of the portion may be smaller than the thickness of an arbitrary position on the second partition wall 5b, the average of the first partition wall 5a The thickness should just be thicker than the average thickness of the 2nd partition 5b.
- Such a heat exchanger 1 includes cone members 8 on the upstream side and the downstream side of the EGR pipe 2.
- the upstream cone member 8 is a member that serves as an introduction part for introducing EGR gas into the EGR pipe 2
- the downstream cone member 8 is a member that serves as an EGR gas discharge part within the EGR pipe 2.
- the cone member 8 is joined to the housing member 3 by brazing so that the larger diameter side covers the end 3 a of the housing member 3.
- a flange member 9 is joined to the tip of the cone member 8 by brazing.
- the heat exchanger 1 is connected to the exhaust manifold of the engine by a flange member 9 on the upstream side.
- the heat exchanger 1 is connected to the intake pipe on the downstream side.
- the heat exchanger 1 is attached to the engine body by a stay 3c provided on the outer wall of the housing member 3.
- FIG. 4 is an explanatory view showing a modification in which the density of the second partition is changed.
- FIG. 5 is an explanatory view showing the arrangement of the second partition walls in the modification shown in FIG.
- a plurality of second partition walls 5b are arranged concentrically.
- the distance between the adjacent second partition walls 5b is expressed as Ln.
- n is a natural number that increases from the center 6 toward the outer periphery.
- the distance Ln increases toward the outer periphery. That is, the second partition walls 5 b are arranged more densely as the distance from the center portion 6 is closer.
- the fluid, that is, the EGR gas easily flows as it approaches the outer peripheral portion side.
- the refrigerant path 4 is provided in the outer peripheral part. For this reason, in order to cool EGR gas efficiently, it is desirable to distribute a large amount of EGR gas through the outer peripheral portion close to the refrigerant passage 4. Therefore, by arranging the second partition walls 5b densely on the side closer to the central portion 6, more EGR gas can be flowed to the outer peripheral portion than the central portion, and the temperature efficiency can be improved.
- the arrangement of the distance Ln does not have to be Ln ⁇ 1 ⁇ Ln in the entire region. In short, it is only necessary that a portion where the second partition walls 5b are densely arranged is formed in a region close to the central portion 6.
- FIG. 6 is an explanatory view showing the heat exchanger 20 of the second embodiment.
- FIG. 6 corresponds to FIG. 2 for explaining the first embodiment.
- the heat exchanger 20 of the second embodiment differs from the heat exchanger 1 of the first embodiment in the following points. That is, the thermal conductivity of the material of the first partition 25a is higher than the thermal conductivity of the material of the second partition 5b. Moreover, the thickness of the 1st partition 25a and the thickness of the 2nd partition 25b are made the same. Since other components are the same, common components are denoted by the same reference numerals in the drawings, and detailed description thereof is omitted.
- the first partition wall 25a is made of high thermal conductive ceramic.
- the second partition wall 25b is formed of a normal ceramic, that is, a ceramic whose thermal conductivity (thermal conductivity) is inferior to the material of the first partition wall 25a.
- the heat exchanger 20 of the second embodiment can have the same thickness as the first partition wall 25a and the second partition wall 25b. For this reason, pressure loss can be reduced.
- FIG. 7A is an explanatory view of the heat exchanger 30 of the third embodiment as viewed from the inlet side.
- FIG. 7B is a cross-sectional view taken along line BB in FIG.
- FIG. 7C is an explanatory view of the heat exchanger 30 of the third embodiment viewed from the outlet side.
- the first partition wall 35a corresponding to the first heat transfer means extends from the EGR gas inlet side to the outlet side of the heat exchanger 35. And the thickness is made thin as it goes to the exit side from the entrance side. That is, the thickness Tin on the inlet side> the thickness Tout on the outlet side.
- the EGR gas flowing into the heat exchanger 35 is higher toward the inlet side. Therefore, on the inlet side, the thickness Tin on the inlet side is made larger than the thickness Tout on the outlet side in order to transfer more heat toward the refrigerant passage 4. Thereby, EGR gas can be cooled efficiently.
- the thickness of the first partition wall 35a is changed.
- the thickness of the second partition wall 35b extending from the EGR gas inlet side to the outlet side of the heat exchanger 35 is changed from the first partition wall 35a toward the outlet side with the first partition wall 35a. You can also make it thinner.
- FIG. 8A is an explanatory view of the heat exchanger 40 of the fourth embodiment as viewed from the inlet side.
- FIG. 8B is a cross-sectional view taken along the line CC in FIG.
- FIG. 8C is an explanatory view of the heat exchanger 40 of the fourth embodiment viewed from the outlet side.
- the first partition 45a corresponding to the first heat transfer means extends from the EGR gas inlet side to the outlet side of the heat exchanger 45.
- the thickness is increased from the entrance side toward the exit side. That is, the thickness on the inlet side Tin ⁇ the thickness Tout on the outlet side.
- entrance can be reduced.
- the temperature of the EGR gas is high and the volume of the EGR gas is large. Therefore, if the flow path area is narrow, the influence on the pressure loss increases, and the pressure loss increases. Therefore, the thickness Tin on the inlet side is made thinner than the thickness Tout on the outlet side. Thereby, the fluid can be cooled efficiently. Moreover, the fall of temperature efficiency is suppressed because the exit side is made thick.
- the thickness of the first partition 45a is changed.
- the thickness of the second partition wall 45b extending from the EGR gas inlet side to the outlet side in the heat exchanger 45 is changed from the first partition wall 45a to the outlet side from the inlet side to the outlet side. It can also be thickened according to
- the fourth embodiment is contrary to the third embodiment, but can be selected depending on which one is important.
- FIG. 9 shows the heat exchanger 50 in which the second partition wall 55b has a rectangular cross-sectional shape.
- the heat exchanger 50 includes an EGR pipe 52, a housing 53, and a refrigerant passage 54, all of which have a rectangular cross section.
- the heat exchange body 55 provided with the 1st partition 55a and the 2nd partition 55b is provided.
- FIG. 10 shows a heat exchanger 60 in which the cross-sectional shape of the second partition wall is a spiral shape.
- the heat exchanger 60 includes the EGR pipe 2, the housing 3, and the refrigerant passage 4 as in the first embodiment. And the heat exchange body 65 provided with the 1st partition 65a which cross
- the same configuration as that of the first to third embodiments can be employed.
- FIG. 11 shows a heat exchanger 70 in which the cross-sectional shape of the second partition is an ellipse.
- the heat exchanger 70 includes an EGR pipe 72, a housing 73, and a refrigerant passage 74, all of which have an elliptical cross section.
- the heat exchange body 75 provided with the 1st partition 75a and the 2nd partition 75b is provided. In this way, even when the cross section is elliptical, the same configuration as in the first to third embodiments can be adopted.
- FIG. 12 shows a heat exchanger 80 in which refrigerant passages are provided at the center and the outer periphery of the heat exchanger.
- the heat exchanger 80 includes a refrigerant passage 11 disposed in the center portion in addition to the refrigerant passage 4 disposed in the outer peripheral portion. Even in such a case, the same configuration as in the first to third embodiments can be employed. Thereby, heat can be efficiently transmitted to the refrigerant passage 4 and the refrigerant passage 11, and the EGR gas can be cooled.
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Geometry (AREA)
- Dispersion Chemistry (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
まず、図1乃至3を参照して、第1実施形態の熱交換器1について説明する。熱交換器1は、種々の流体を冷却対象とすることができるが、第1実施形態では、内燃機関に装備される排気再循環装置に組み込まれ、EGR(Exhaust Gas Recirculation)ガスを冷却するEGRクーラとして用いられる。図1は第1実施形態の熱交換器1の概略構成を示す説明図である。図2は図1におけるA-A線断面図である。図3は熱交換器1が備える隔壁の厚みを示す説明図である。
つぎに、第2実施形態について、図6を参照しつつ説明する。図6は第2実施形態の熱交換器20を示す説明図である。図6は、第1実施形態を説明する図2に対応する。第2実施形態の熱交換器20と第1実施形態の熱交換器1とは、以下の点で異なる。すなわち、第1隔壁25aの材料の熱伝導性が、第2隔壁5bの材料の熱伝導性よりも高い。また、第1隔壁25aの厚みと第2隔壁25bの厚みは、同一とされている。他の構成要素については、同一であるので、共通する構成要素については図面中、同一の参照番号を付し、その詳細な説明は省略する。
つぎに、第3実施形態の熱交換器30について図7(A)~(C)を参照しつつ説明する。図7(A)は第3実施形態の熱交換器30を入口側から観た説明図である。図7(B)は、図7(A)におけるB―B線断面図である。図7(C)は第3実施形態の熱交換器30を出口側から観た説明図である。
つぎに、第4実施形態の熱交換器40について図8(A)~(C)を参照しつつ説明する。図8(A)は第4実施形態の熱交換器40を入口側から観た説明図である。図8(B)は、図8(A)におけるC―C線断面図である。図8(C)は第4実施形態の熱交換器40を出口側から観た説明図である。
つぎに、各種変形例について説明する。
2 EGR配管
3、53、73 ハウジング
4、54、74 冷媒通路
5、25、55、65、75 熱交換体
5a、25a、55a、65a、75a 第1隔壁
5b、25b、55b、65b、75b 第2隔壁
Claims (5)
- 冷却対象となる流体が通過する熱交換体と、
前記熱交換体の中心部と外周部の少なくとも一方に設けられ、前記熱交換体と熱交換する冷媒が流通する冷媒通路と、を備え、
前記熱交換体は、中心部から外周部に向かって延びる第1伝熱手段と、周方向に沿って延び、前記第1伝熱手段と交差する第2伝熱手段と、を備え、前記第1伝熱手段の伝熱効率が前記第2伝熱手段の伝熱効率よりも高い熱交換器。 - 前記第1伝熱手段は、前記熱交換体の中心部から外周部に向かって放射状に延びる第1隔壁であり、
前記第2伝熱手段は、同心状の第2隔壁であり、
前記第1隔壁の厚みは、前記第2隔壁の厚みよりも厚い請求項1に記載の熱交換器。 - 前記第1伝熱手段は、前記熱交換体の中心部から外周部に向かって放射状に延びる第1隔壁であり、
前記第2伝熱手段は、同心状の第2隔壁であり、
前記第1隔壁の材料の熱伝導性は、前記第2隔壁の材料の熱伝導性よりも高い請求項1又は2に記載の熱交換器。 - 前記第1伝熱手段は、前記熱交換体における冷却対象となる流体の入口側から出口側に向かって延びる第1隔壁であり、前記第2伝熱手段は、前記熱交換体における冷却対象となる流体の入口側から出口側に向かって延びる第2隔壁であり、前記第1隔壁の厚みと前記第2隔壁の少なくとも一方は、その厚みが前記入口側から出口側に向かうに従って薄くされた部分を備える請求項1乃至3のいずれか一項に記載の熱交換器。
- 前記第1伝熱手段は、前記熱交換体における冷却対象となる流体の入口側から出口側に向かって延びる第1隔壁であり、前記第2伝熱手段は、前記熱交換体における冷却対象となる流体の入口側から出口側に向かって延びる第2隔壁であり、前記第1隔壁の厚みと前記第2隔壁の少なくとも一方は、その厚みが前記入口側から出口側に向かうに従って厚くされた部分を備える請求項1乃至3のいずれか一項に記載の熱交換器。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2014543086A JP6075381B2 (ja) | 2012-10-25 | 2012-10-25 | 熱交換器 |
PCT/JP2012/077641 WO2014064812A1 (ja) | 2012-10-25 | 2012-10-25 | 熱交換器 |
EP12886912.0A EP2913616A4 (en) | 2012-10-25 | 2012-10-25 | Heat Exchanger |
US14/437,956 US20150292812A1 (en) | 2012-10-25 | 2012-10-25 | Heat exchanger |
CN201280076564.2A CN104736959B (zh) | 2012-10-25 | 2012-10-25 | 热交换器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2012/077641 WO2014064812A1 (ja) | 2012-10-25 | 2012-10-25 | 熱交換器 |
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Publication Number | Publication Date |
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WO2014064812A1 true WO2014064812A1 (ja) | 2014-05-01 |
Family
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Family Applications (1)
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PCT/JP2012/077641 WO2014064812A1 (ja) | 2012-10-25 | 2012-10-25 | 熱交換器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150292812A1 (ja) |
EP (1) | EP2913616A4 (ja) |
JP (1) | JP6075381B2 (ja) |
CN (1) | CN104736959B (ja) |
WO (1) | WO2014064812A1 (ja) |
Cited By (4)
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JP2016125797A (ja) * | 2015-01-08 | 2016-07-11 | 東京窯業株式会社 | ハニカム構造体 |
EP3150949A4 (en) * | 2014-05-26 | 2017-05-17 | Calsonic Kansei Corporation | Exhaust heat recovery device and manufacturing method for same |
JP2019120488A (ja) * | 2018-01-04 | 2019-07-22 | 日本碍子株式会社 | 熱交換部材及び熱交換器 |
JP2019184224A (ja) * | 2018-03-30 | 2019-10-24 | 日本碍子株式会社 | 熱交換器 |
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SG11201807177VA (en) * | 2016-04-13 | 2018-10-30 | Applied Materials Inc | Apparatus for exhaust cooling |
DE102016210857A1 (de) * | 2016-06-17 | 2017-12-21 | Robert Bosch Gmbh | Elektrischer Achsantrieb für ein Fahrzeug |
JP2019060304A (ja) * | 2017-09-27 | 2019-04-18 | トヨタ自動車株式会社 | 排熱回収器 |
DE112018000203T5 (de) | 2018-01-05 | 2019-09-05 | Ngk Insulators, Ltd. | Wärmeaustauschelement, Wärmetauscher und Wärmetauscher mit Reinigungseinrichtung |
CN110314708B (zh) * | 2018-03-30 | 2024-05-14 | 日本碍子株式会社 | 热交换器 |
BE1027057B1 (fr) * | 2019-02-18 | 2020-09-14 | Safran Aero Boosters Sa | Échangeur de chaleur air-huile |
US11920874B2 (en) * | 2021-02-09 | 2024-03-05 | Ngk Insulators, Ltd. | Heat exchange member, heat exchanger and heat conductive member |
DE112021000675T5 (de) | 2021-03-11 | 2023-12-07 | Ngk Insulators, Ltd. | Wärmetauschelement, wärmetauscher, der das wärmetauschelement verwendet, und verfahren zum herstellen des wärmetauschelements |
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- 2012-10-25 WO PCT/JP2012/077641 patent/WO2014064812A1/ja active Application Filing
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Cited By (9)
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---|---|---|---|---|
EP3150949A4 (en) * | 2014-05-26 | 2017-05-17 | Calsonic Kansei Corporation | Exhaust heat recovery device and manufacturing method for same |
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JP2019120488A (ja) * | 2018-01-04 | 2019-07-22 | 日本碍子株式会社 | 熱交換部材及び熱交換器 |
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Also Published As
Publication number | Publication date |
---|---|
CN104736959B (zh) | 2017-07-11 |
EP2913616A1 (en) | 2015-09-02 |
EP2913616A4 (en) | 2015-12-02 |
JP6075381B2 (ja) | 2017-02-08 |
JPWO2014064812A1 (ja) | 2016-09-05 |
US20150292812A1 (en) | 2015-10-15 |
CN104736959A (zh) | 2015-06-24 |
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