WO2021166697A1 - 熱交換器 - Google Patents
熱交換器 Download PDFInfo
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- WO2021166697A1 WO2021166697A1 PCT/JP2021/004407 JP2021004407W WO2021166697A1 WO 2021166697 A1 WO2021166697 A1 WO 2021166697A1 JP 2021004407 W JP2021004407 W JP 2021004407W WO 2021166697 A1 WO2021166697 A1 WO 2021166697A1
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- WIPO (PCT)
- Prior art keywords
- metal fiber
- fiber structure
- pipe
- heat exchanger
- metal
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular 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
- 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
- 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
- F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
- F28D3/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits with tubular 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
- 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
- F28F1/405—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 and being formed of wires
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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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
- H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
Definitions
- the present invention relates to a heat exchanger.
- JP2003-123949A discloses an electromagnetic induction heating device that applies electromagnetic induction heating to heating, has good fluid heating efficiency, and makes it easy to manufacture a conductor to be used. ..
- JP2003-123949A discloses a honeycomb structural material formed of metal fibers inside a metal pipe.
- JP2019-172275A discloses a cooling member having a metal fiber sheet made of metal fibers and a cooling mechanism for cooling the metal fiber sheet.
- a metal fiber structure formed of metal fibers is generally adhered to the inner surface of a pipe through which a fluid flows as a heat transfer medium.
- turbulence is unlikely to occur in the fluid flowing in the pipe, and in this case, there is a problem that the residence time of the fluid flowing in the pipe is shortened and the thermal conductivity is reduced.
- the present invention has been made in consideration of such a point, and an object of the present invention is to provide a heat exchanger capable of increasing thermal conductivity to a fluid flowing inside an accommodating body accommodating a metal fiber structure. And.
- the heat exchanger of the present invention includes a metal fiber structure formed of metal fibers and an accommodating body for accommodating the metal fiber structure, and the metal fiber structure accommodated in the accommodating body and the above-mentioned metal fiber structure. It is characterized in that a gap is formed in at least a part of the inner surface of the container.
- FIG. 3 is a cross-sectional view taken along the line BB of the heat exchanger shown in FIG.
- FIG. 7 is a cross-sectional view taken along the line CC of the heat exchanger shown in FIG.
- FIG. 7 is a cross-sectional view taken along the line DD of the heat exchanger shown in FIG.
- FIG. 1 to 9 are cross-sectional views showing various examples of heat exchangers according to the present embodiment.
- the heat exchanger according to the present embodiment heats the fluid or dissipates heat from the fluid by flowing the fluid as a heat transfer medium in the pipe.
- the heat exchangers shown in FIGS. 1 and 2 include a cylindrical pipe 10 having a circular cross section and a substantially cylindrical metal fiber structure 20 arranged inside the pipe 10.
- a fluid (specifically, a liquid or a gas) as a heat transfer medium flows through the flow path 12 formed inside the pipe 10. More specifically, fluid inlets 10a and outlets 10b are formed at both ends of the pipe 10, and the fluid that has entered the inside of the pipe 10 from the inlet 10a is discharged from the outlet 10b through the flow path 12.
- the pipe 10 functions as an accommodating body for accommodating the metal fiber structure 20.
- the pipe 10 is composed of a metal selected from the group consisting of, for example, stainless steel, iron, copper, aluminum, bronze, brass, nickel and chromium.
- the metal fiber structure 20 is formed of metal fibers.
- a metal-coated fiber may be used.
- the metal fiber structure 20 may be formed into a non-woven fabric, a woven fabric, a mesh or the like by a wet or dry manufacturing method, and then processed into a metal fiber structure.
- a metal fiber non-woven fabric in which the metal fibers are bonded is used as the metal fiber structure 20.
- the fact that the metal fibers are bound means that the metal fibers are physically fixed to each other to form a binding portion.
- the metal fibers may be directly fixed to each other at the binding portion, or a part of the metal fibers may be indirectly fixed to each other via a component other than the metal component. good.
- the metal fiber structure 20 is formed of metal fibers, there are voids inside the metal fiber structure 20. As a result, the fluid flowing through the flow path 12 in the pipe 10 can pass through the inside of the metal fiber structure 20. Further, in the metal fiber structure 20, when the metal fibers are bound, voids are more likely to be formed between the metal fibers constituting the metal fiber structure 20. Such voids may be formed, for example, by entanglement of metal fibers. When the metal fiber structure 20 is provided with such a gap, the fluid flowing through the flow path 12 of the pipe 10 is introduced into the metal fiber structure 20, so that the heat exchange property with respect to the fluid can be easily improved. Further, in the metal fiber structure 20, it is preferable that the metal fibers are sintered at the binding portion. Since the metal fibers are sintered, the thermal conductivity and homogeneity of the metal fiber structure 20 can be easily stabilized.
- the metal constituting the metal fiber contained in the metal fiber structure 20 are not particularly limited, but are selected from the group consisting of stainless steel, iron, copper, aluminum, bronze, brass, nickel, chromium and the like. Alternatively, it may be a noble metal selected from the group consisting of gold, platinum, silver, palladium, rhodium, iridium, ruthenium, osmium and the like. Among these, copper fibers and aluminum fibers are preferable because they have excellent thermal conductivity and have an appropriate balance between rigidity and plastic deformability.
- the material of the metal fiber constituting the metal fiber structure 20 and the material of the pipe 10 are different from each other.
- the metal fiber constituting the metal fiber structure 20 may be copper fiber, whereas the material of the pipe 10 may be aluminum.
- a gap is formed in at least a part between the metal fiber structure 20 housed in the pipe 10 and the inner surface of the pipe 10. That is, the metal fiber structure 20 exists inside the pipe 10 in a state of not being bound to the inner surface of the pipe 10. Therefore, the metal fiber structure 20 is movable inside the pipe 10 along the flow direction of the fluid.
- the fluid flowing through the flow path 12 in the pipe 10 can pass through the gap formed between the metal fiber structure 20 and the inner surface of the pipe 10.
- the metal fiber structure 20 is composed of metal fibers and has a cushioning property, so that the inner surface of the pipe 10 is damaged by the metal fiber structure 20. It is possible to prevent the metal from falling out.
- the hardness of the material of the pipe 10 is larger than the hardness of the material of the metal fiber structure 20. In this case, even if the metal fiber structure 20 moves inside the pipe 10, it is possible to further prevent the inner surface of the pipe 10 from being damaged by the metal fiber structure 20.
- the size of the gap between the metal fiber structure 20 housed in the pipe 10 and the inner surface of the pipe 10 is in the range of 10 ⁇ m to 500 ⁇ m, preferably in the range of 30 ⁇ m to 300 ⁇ m. Yes, more preferably the size is in the range of 50 ⁇ m to 200 ⁇ m.
- the size of the gap between the metal fiber structure 20 housed in the pipe 10 and the inner surface of the pipe 10 is the distance between the pipe 10 and the metal fiber structure 20 in the direction orthogonal to the inner surface of the pipe 10.
- the size of the gap to 10 ⁇ m or more, it is possible to prevent the pressure loss from becoming large, and thus it is possible to prevent the fluid from becoming difficult to pass through the gap.
- the size of this gap to 500 ⁇ m or less, it is possible to prevent the fluid from flowing through this gap without resistance, and thus the heat exchange performance can be improved.
- the heat exchanger of the present embodiment having the above configuration, there is a gap in at least a part between the metal fiber structure 20 housed in the pipe 10 as an accommodating body and the inner surface of the pipe 10. Is formed. Therefore, the surface area of the metal fiber structure 20 in contact with the fluid flowing through the pipe 10 is increased, and the thermal conductivity of the metal fiber structure 20 can be increased. Further, when the metal fiber structure 20 is composed of randomly arranged metal short fibers, turbulence is likely to occur in the fluid flowing through the pipe 10. In this case, the residence time of the fluid flowing through the pipe 10 can be lengthened, so that the heat transfer effect can be enhanced.
- the temperature of the fluid flowing through the pipe 10 can be made uniform (for example, the temperature of the central portion of the pipe 10 and the vicinity of the inner wall can be made uniform).
- the thermal conductivity of the metal fiber structure 20 can be increased and the thermal conductivity can be increased. Since the heat transfer effect can be enhanced by lengthening the residence time of the fluid flowing through the pipe 10, the thermal conductivity to the fluid can be enhanced. Further, when the metal fiber structure 20 is completely separated from the pipe 10, even when it is applied to a heat exchanger in which rapid heating and rapid cooling are repeatedly performed, the metal fiber structure can expand and contract the pipe 10.
- the body 20 does not follow, it is possible to prevent the metal fiber structure 20 from being damaged. Further, when a gap is formed in at least a part between the metal fiber structure 20 and the inner surface of the pipe 10, the internal pressure due to the fluid flowing through the pipe 10 is easily released.
- the metal structure When the metal structure is simply housed inside the pipe 10, the metal structure moves inside the pipe 10 when a gap is formed between the metal structure and the inner surface of the pipe 10. Occasionally, the inner surface of the pipe 10 may be damaged by the metal structure.
- the metal fiber structure 20 is composed of metal fibers and has a cushioning property, it is possible to prevent the inner surface of the pipe 10 from being damaged by the metal fiber structure 20. ..
- the metal fiber structure 20 is movable inside the pipe 10. Therefore, turbulence is more likely to occur when the fluid flows through the flow path 12 of the pipe 10. As a result, the residence time of the fluid flowing through the pipe 10 becomes longer, so that the heat transfer effect can be further enhanced.
- blades are attached to the end of the metal fiber structure 20. May be attached.
- the fluid flowing through the flow path 12 of the pipe 10 hits the blades of the metal fiber structure 20, so that the metal fiber structure 20 rotates inside the pipe 10.
- turbulence is more likely to occur when the fluid flows through the flow path 12 of the pipe 10.
- the metal fiber structure 20 is not completely separated from the inner surface of the pipe 10, but only a part of the outer peripheral surface of the metal fiber structure 20 is the inner surface of the pipe 10. It may be attached to. Even in this case, when a gap is formed between the portion of the metal fiber structure 20 that is not attached to the inner surface of the pipe 10 and the inner surface of the pipe 10, the thermal conductivity of the metal fiber structure 20 is increased. In addition, the heat transfer effect can be enhanced by lengthening the residence time of the fluid flowing through the pipe 10, so that the thermal conductivity to the fluid can be enhanced.
- the heat exchanger according to the present embodiment is not limited to the one shown in FIGS. 1 and 2. Another example of the heat exchanger according to the present embodiment will be described with reference to FIGS. 3 and 4.
- the heat exchangers shown in FIGS. 3 and 4 include a pipe 30 having a substantially square cross section and a plurality of substantially rectangular parallelepiped shapes (specifically, for example, a plate shape) arranged inside the pipe 30 (FIGS. 3 and 4).
- a pipe 30 having a substantially square cross section and a plurality of substantially rectangular parallelepiped shapes (specifically, for example, a plate shape) arranged inside the pipe 30 (FIGS. 3 and 4).
- 3) metal fiber structures 40 are provided.
- a fluid specifically, a liquid or a gas
- fluid inlets 30a and outlets 30b are formed at both ends of the pipe 30, and the fluid that has entered the inside of the pipe 30 from the inlet 30a is discharged from the outlet 30b through the flow path 32.
- the pipe 30 functions as an accommodating body for accommodating each metal fiber structure 40.
- the same type of metal as the metal constituting the pipe 10 shown in FIGS. 1 and 2 is used.
- the metal fiber constituting each metal fiber structure 40 the same type as the metal fiber constituting the metal fiber structure 20 shown in FIGS. 1 and 2 is used.
- the metal fiber structure 40 is formed of metal fibers, there are voids inside the metal fiber structure 40. As a result, the fluid flowing through the flow path 32 in the pipe 30 can pass through the inside of the metal fiber structure 40.
- a maintenance member 34 for maintaining each metal fiber structure 40 in a predetermined position is provided.
- a maintenance member 34 is, for example, a protrusion formed on the inner surface of the pipe 30.
- each metal fiber structure 40 exists inside the pipe 30 in a state of not being bound to the inner surface of the pipe 30.
- the fluid flowing through the flow path 32 in the pipe 30 can pass through the gap formed between the metal fiber structure 40 and the inner surface of the pipe 30.
- the metal fiber structure 40 is maintained at a predetermined position by the maintenance member 34 inside the pipe 30, a gap is still formed in at least a part between each metal fiber structure 40 and the inner surface of the pipe 30. Therefore, each metal fiber structure 40 may move slightly.
- the metal fiber structure 40 is composed of metal fibers and has a cushioning property, it is possible to prevent the inner surface of the pipe 30 from being damaged by the metal fiber structure 40.
- the size of the gap between the metal fiber structure 40 housed in the pipe 30 and the inner surface of the pipe 30 is in the range of 10 ⁇ m to 500 ⁇ m, preferably in the range of 30 ⁇ m to 300 ⁇ m. Yes, more preferably the size is in the range of 50 ⁇ m to 200 ⁇ m.
- the size of the gap between the metal fiber structure 40 housed in the pipe 30 and the inner surface of the pipe 30 is the distance between the pipe 30 and the metal fiber structure 40 in the direction orthogonal to the inner surface of the pipe 30.
- the metal fiber structure 40 housed in the pipe 30 as the housing body similarly to the heat exchangers shown in FIGS. 1 and 2, the metal fiber structure 40 housed in the pipe 30 as the housing body , A gap is formed in at least a part of the pipe 30 from the inner surface. Therefore, the surface area of the metal fiber structure 40 in contact with the fluid flowing through the pipe 30 is increased, and the thermal conductivity of the metal fiber structure 40 can be increased. In addition, the temperature of the fluid flowing through the pipe 30 can be made uniform. Further, when a gap is formed in at least a part between the metal fiber structure 40 and the inner surface of the pipe 30, turbulence is likely to occur in the fluid flowing through the pipe 30.
- the residence time of the fluid flowing through the pipe 30 becomes long, so that the heat transfer effect can be enhanced.
- the thermal conductivity of the metal fiber structure 40 can be increased and the thermal conductivity can be increased. Since the heat transfer effect can be enhanced by lengthening the residence time of the fluid flowing through the pipe 30, the thermal conductivity to the fluid can be enhanced.
- the heat exchanger shown in FIG. 5 has a pipe 50 having a substantially square cross section and a plurality of substantially rectangular parallelepiped shapes (specifically, for example, a plate shape) arranged inside the pipe 50 (2 in the example shown in FIG. 5).
- the metal fiber structure 60 is provided.
- a fluid (specifically, a liquid or a gas) as a heat transfer medium flows through a flow path 52 formed inside the pipe 50. More specifically, fluid inlets 50a and outlets 50b are formed at both ends of the pipe 50, and the fluid that has entered the inside of the pipe 50 from the inlet 50a is discharged from the outlet 50b through the flow path 52.
- the pipe 50 functions as an accommodating body for accommodating each metal fiber structure 60.
- the metal constituting the pipe 50 the same type of metal as the metal constituting the pipe 10 shown in FIGS. 1 and 2 is used. Further, as the metal fiber constituting each metal fiber structure 60, the same type as the metal fiber constituting the metal fiber structure 20 shown in FIGS. 1 and 2 is used. As described above, since the metal fiber structure 60 is formed of metal fibers, there are voids inside the metal fiber structure 60. As a result, the fluid flowing through the flow path 52 in the pipe 50 can pass through the inside of the metal fiber structure 60.
- a mountain portion 54 is provided in the pipe 50 so that a part of the pipe 50 has a large cross-sectional area.
- the mountain portion 54 holds the edge of each metal fiber structure 60.
- the cross section of the portion of the pipe 50 other than the mountain portion 54 is smaller than the cross section of each metal fiber structure 60.
- the cross section of the portion of the pipe 50 where the mountain portion 54 is provided is larger than the cross section of each metal fiber structure 60. Since such a mountain portion 54 is provided in the pipe 50, each metal fiber structure 60 does not move significantly inside the pipe 50 as compared with the heat exchangers shown in FIGS. 1 and 2.
- a gap is formed in at least a part between each metal fiber structure 60 housed in the pipe 50 and the inner surface of the pipe 50. That is, each metal fiber structure 60 exists inside the pipe 50 in a state of not being bound to the inner surface of the pipe 50. As a result, the fluid flowing through the flow path 52 in the pipe 50 can pass through the gap formed between the metal fiber structure 60 and the inner surface of the pipe 50. Further, although the metal fiber structure 60 is maintained at a predetermined position by the mountain portion 54 of the pipe 50 inside the pipe 50, it is still at least a part between each metal fiber structure 60 and the inner surface of the pipe 50. Since the gap is formed, each metal fiber structure 60 may move slightly. However, since the metal fiber structure 60 is composed of metal fibers and has a cushioning property, it is possible to prevent the inner surface of the pipe 50 from being damaged by the metal fiber structure 60.
- the size of the gap between the metal fiber structure 60 housed in the pipe 50 and the inner surface of the pipe 50 is in the range of 10 ⁇ m to 500 ⁇ m, preferably in the range of 30 ⁇ m to 300 ⁇ m. Yes, more preferably the size is in the range of 50 ⁇ m to 200 ⁇ m.
- the size of the gap between the metal fiber structure 60 housed in the pipe 50 and the inner surface of the pipe 50 is the distance between the pipe 50 and the metal fiber structure 60 in the direction orthogonal to the inner surface of the pipe 50.
- the size of the gap to 10 ⁇ m or more, it is possible to prevent the pressure loss from becoming large, and thus it is possible to prevent the fluid from becoming difficult to pass through the gap.
- the size of this gap to 500 ⁇ m or less, it is possible to prevent the fluid from flowing through this gap without resistance, and thus the heat exchange performance can be improved.
- the metal fiber structure 60 housed in the pipe 50 as an accommodating body and the pipe 50 A gap is formed in at least a part of the inner surface of the surface. Therefore, the surface area of the metal fiber structure 60 in contact with the fluid flowing through the pipe 50 is increased, and the thermal conductivity of the metal fiber structure 60 can be increased. Further, the temperature of the fluid flowing through the pipe 50 can be made uniform. Further, when a gap is formed in at least a part between the metal fiber structure 60 and the inner surface of the pipe 50, turbulence is likely to occur in the fluid flowing through the pipe 50.
- the residence time of the fluid flowing through the pipe 50 becomes long, so that the heat transfer effect can be enhanced.
- the thermal conductivity of the metal fiber structure 60 can be increased and the thermal conductivity can be increased. Since the heat transfer effect can be enhanced by lengthening the residence time of the fluid flowing through the pipe 50, the thermal conductivity to the fluid can be enhanced.
- the heat exchanger shown in FIG. 6 has a pipe 70 having a circular cross section and bent at about 90 ° in the vicinity of both ends, and a substantially cylindrical metal fiber structure 80 arranged inside the pipe 70.
- a fluid (specifically, a liquid or a gas) as a heat transfer medium flows through a flow path 72 formed inside the pipe 70.
- fluid inlets 70a and outlets 70b are formed at both ends of the pipe 70, and the fluid entering the inside of the pipe 10 from the inlet 70a has a metal fiber structure after being turned at the bent portion 74. It passes through the body 80, is then turned around at the bent portion 76, and is then discharged from the outlet 70b.
- the pipe 70 functions as an accommodating body for accommodating the metal fiber structure 80.
- the metal constituting the pipe 70 the same type of metal as the metal constituting the pipe 10 shown in FIGS. 1 and 2 is used.
- the metal fiber constituting the metal fiber structure 80 the same type as the metal fiber constituting the metal fiber structure 20 shown in FIGS. 1 and 2 is used. As described above, since the metal fiber structure 80 is formed of metal fibers, there are voids inside the metal fiber structure 80. As a result, the fluid flowing through the flow path 72 in the pipe 70 can pass through the inside of the metal fiber structure 80.
- the metal fiber structure 80 is maintained at a predetermined position by a pair of bent portions 74 and 76 of the pipe 70. More specifically, since the pipe 70 is provided with the bent portion 74, the metal fiber structure 80 does not move significantly to the right from the position shown in FIG. Further, since the pipe 70 is provided with the bent portion 76, the metal fiber structure 80 does not move significantly to the left from the position shown in FIG. As described above, since the bent portions 74 and 76 are provided in the pipe 70, the metal fiber structure 80 does not move much inside the pipe 70 as compared with the heat exchangers shown in FIGS. 1 and 2. No.
- a gap is formed in at least a part between the metal fiber structure 80 housed in the pipe 70 and the inner surface of the pipe 70. That is, the metal fiber structure 80 exists inside the pipe 70 in a state of not being bound to the inner surface of the pipe 70. As a result, the fluid flowing through the flow path 72 in the pipe 70 can pass through the gap formed between the metal fiber structure 80 and the inner surface of the pipe 70. Further, inside the pipe 70, the metal fiber structure 80 is maintained at a predetermined position by the bent portions 74 and 76 of the pipe 70, but still at least one between the metal fiber structure 80 and the inner surface of the pipe 70. Since the gap is formed in the portion, the metal fiber structure 80 may move slightly. However, since the metal fiber structure 80 is composed of metal fibers and has a cushioning property, it is possible to prevent the inner surface of the pipe 70 from being damaged by the metal fiber structure 80.
- the size of the gap between the metal fiber structure 80 housed in the pipe 70 and the inner surface of the pipe 70 is in the range of 10 ⁇ m to 500 ⁇ m, preferably in the range of 30 ⁇ m to 300 ⁇ m. Yes, more preferably the size is in the range of 50 ⁇ m to 200 ⁇ m.
- the size of the gap between the metal fiber structure 80 housed in the pipe 70 and the inner surface of the pipe 70 is the distance between the pipe 70 and the metal fiber structure 80 in the direction orthogonal to the inner surface of the pipe 70.
- the metal fiber structure 80 housed in the pipe 70 as an accommodating body and the pipe 70 are also provided in the same manner as the heat exchangers shown in FIGS. 1 and 2.
- a gap is formed in at least a part of the inner surface of the surface. Therefore, the surface area of the metal fiber structure 80 in contact with the fluid flowing through the pipe 70 is increased, and the thermal conductivity of the metal fiber structure 80 can be increased. Further, the temperature of the fluid flowing through the pipe 70 can be made uniform. Further, when a gap is formed in at least a part between the metal fiber structure 80 and the inner surface of the pipe 70, turbulence is likely to occur in the fluid flowing through the pipe 70.
- the residence time of the fluid flowing through the pipe 70 becomes long, so that the heat transfer effect can be enhanced.
- the thermal conductivity of the metal fiber structure 80 can be increased and the thermal conductivity can be increased. Since the heat transfer effect can be enhanced by lengthening the residence time of the fluid flowing through the pipe 70, the thermal conductivity to the fluid can be enhanced.
- the heat exchangers shown in FIGS. 7 to 9 include a cylindrical pipe 90 having a circular cross section and a plurality of substantially disk-shaped metals (five in the example shown in FIG. 7 and the like) arranged inside the pipe 90.
- a rod-shaped connecting member 100 for connecting the fiber structures 102 and 104 and the metal fiber structures 102 and 104 is provided.
- a fluid (specifically, a liquid or a gas) as a heat transfer medium flows through a flow path 92 formed inside the pipe 90. More specifically, fluid inlets 90a and outlets 90b are formed at both ends of the pipe 90, and the fluid that has entered the inside of the pipe 90 from the inlet 90a is discharged from the outlet 90b through the flow path 92.
- the pipe 90 functions as an accommodating body for accommodating the metal fiber structures 102 and 104.
- the metal constituting the pipe 90 the same type of metal as the metal constituting the pipe 10 shown in FIGS. 1 and 2 is used.
- the rod-shaped connecting member 100 passes through a through hole (not shown) formed in the center of each of the substantially disk-shaped metal fiber structures 102 and 104, and the metal fiber structures 102 and 104 are connected to each other. It is fixed to the member 100.
- the connecting member 100 is composed of a metal selected from the group consisting of, for example, stainless steel, iron, copper, aluminum, bronze, brass, nickel and chromium. Then, the metal fiber structures 102 and 104 are bound to the connecting member 100. Further, as shown in FIGS. 8 and 9, a plurality of (for example, eight) through holes 102a and 104a are formed in the metal fiber structures 102 and 104, and the fluid flows through the flow path 92 of the pipe 90.
- the phases of the through holes 102a and 104a provided in the metal fiber structures 102 and 104 fixed to the connecting member 100 are different. Further, as shown in FIG. 7, these metal fiber structures 102 and 104 are arranged alternately. Therefore, turbulence is likely to occur in the fluid flowing through the through holes 102a and 104a of the metal fiber structures 102 and 104.
- the metal fibers constituting the metal fiber structures 102 and 104 those of the same type as the metal fibers constituting the metal fiber structure 20 shown in FIGS. 1 and 2 are used.
- the metal fiber structures 102 and 104 are formed of the metal fibers, there are voids inside the metal fiber structures 102 and 104. As a result, the fluid flowing through the flow path 92 in the pipe 90 can pass through the insides of the metal fiber structures 102 and 104 in addition to the through holes 102a and 104a.
- a gap is formed in at least a part between each of the metal fiber structures 102 and 104 housed in the pipe 90 and the inner surface of the pipe 90. That is, the metal fiber structures 102 and 104 exist inside the pipe 90 in a state where they are not bound to the inner surface of the pipe 90. Therefore, the combination of the metal fiber structures 102 and 104 and the connecting member 100 is movable inside the pipe 90. As a result, the fluid flowing through the flow path 92 in the pipe 90 can pass through the gap formed between the metal fiber structures 102 and 104 and the inner surface of the pipe 90.
- the metal fiber structures 102 and 104 are composed of metal fibers and have cushioning properties. It is possible to prevent the inner surface of the pipe 90 from being damaged by the metal fiber structures 102 and 104.
- the size of the gap between each of the metal fiber structures 102 and 104 housed in the pipe 90 and the inner surface of the pipe 90 is in the range of 10 ⁇ m to 500 ⁇ m, preferably in the range of 30 ⁇ m to 300 ⁇ m. It is a size, more preferably a size in the range of 50 ⁇ m to 200 ⁇ m.
- the size of the gap between the metal fiber structures 102, 104 housed in the pipe 90 and the inner surface of the pipe 90 is such that the pipe 90 and the metal fiber structures 102, 104 in the direction orthogonal to the inner surface of the pipe 90. The distance between and.
- the size of the gap By setting the size of the gap to 10 ⁇ m or more, it is possible to prevent the pressure loss from becoming large, and thus it is possible to prevent the fluid from becoming difficult to pass through the gap. On the other hand, by setting the size of this gap to 500 ⁇ m or less, it is possible to prevent the fluid from flowing through this gap without resistance, and thus the heat exchange performance can be improved.
- each metal fiber structure 102 accommodated in the pipe 90 as an accommodating body 102. , 104 and at least a part of the inner surface of the pipe 90 are provided with a gap. Therefore, the surface area of each of the metal fiber structures 102 and 104 that the fluid flowing through the pipe 90 comes into contact with becomes large, and the thermal conductivity of each of the metal fiber structures 102 and 104 can be increased. In addition, the temperature of the fluid flowing through the pipe 90 can be made uniform.
- the thermal conductivity of the metal fiber structures 102 and 104 is determined.
- the heat transfer effect can be enhanced by lengthening the residence time of the fluid flowing through the pipe 90, so that the thermal conductivity to the fluid can be enhanced.
- the combination of the metal fiber structures 102 and 104 and the connecting member 100 is movable inside the pipe 90. Therefore, turbulence is more likely to occur when the fluid flows through the flow path 92 of the pipe 90. As a result, the residence time of the fluid flowing through the pipe 90 becomes longer, so that the heat transfer effect can be further enhanced.
- the rod-shaped connecting member 100 may be rotated by a driving means (not shown).
- the metal fiber structures 102 and 104 also rotate around the connecting member 100, so that turbulence is more likely to occur in the fluid flowing through the flow path 92 of the pipe 90.
- the fluid flowing through the flow path 92 of the pipe 90 is a polymer liquid
- the polymer liquid can be diffused by rotating the metal fiber structures 102 and 104.
- the metal fiber structures 102 and 104 are not fixed to the connecting member 100, but the metal fiber structures 102 and 104 are shown with respect to the connecting member 100.
- the metal fiber structures 102 and 104 may be supported by the connecting member 100 so as to be slidable in the left-right direction of 7.
- the connecting member 100 may be provided at a fixed position inside the pipe 90. Even in such a case, since the metal fiber structures 102 and 104 are slidable with respect to the connecting member 100, turbulence is more likely to occur in the fluid flowing through the flow path 92 of the pipe 90.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Geometry (AREA)
- Electromagnetism (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Power Steering Mechanism (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Claims (15)
- 金属繊維から形成される金属繊維構造体と、
前記金属繊維構造体を収容する収容体と、
を備え、
前記収容体に収容されている前記金属繊維構造体と前記収容体の内面との間の少なくとも一部に隙間が形成されている、熱交換器。 - 前記収容体の両端には流体の入口および出口がそれぞれ形成されており、前記入口から前記収容体の内部に入った流体が前記金属繊維構造体の内部または前記金属繊維構造体と前記収容体の内面との間に形成された隙間を通って前記出口から排出される、請求項1記載の熱交換器。
- 前記収容体は円筒形状である、請求項2記載の熱交換器。
- 前記金属繊維構造体は前記収容体の内部で移動自在となっている、請求項1乃至3のいずれか一項に記載の熱交換器。
- 前記金属繊維構造体は前記収容体の内部を流れる流体の流れ方向に沿って移動自在となっている、請求項4記載の熱交換器。
- 前記収容体には、前記金属繊維構造体を所定の位置に維持するための維持部材が設けられており、前記収容体の内部を流れる流体の流れ方向に沿った前記金属繊維構造体の移動が前記維持部材により規制される、請求項1乃至3のいずれか一項に記載の熱交換器。
- 前記金属繊維構造体を構成する前記金属繊維の材料と、前記収容体の材料とが互いに異なっている、請求項1乃至6のいずれか一項に記載の熱交換器。
- 前記金属繊維構造体には貫通穴が形成されている、請求項1乃至7のいずれか一項に記載の熱交換器。
- 前記貫通穴は、前記収容体の内部を流れる流体の流れ方向に沿って延びている、請求項8記載の熱交換器。
- 前記金属繊維構造体を構成する前記金属繊維は互いに結着されたものである、請求項1乃至9のいずれか一項に記載の熱交換器。
- 前記金属繊維構造体の端部に羽根が取り付けられており、前記収容体の内部を流れる流体が前記羽根に当たることにより前記金属繊維構造体が前記収容体の内部で回転するようになっている、請求項1乃至10のいずれか一項に記載の熱交換器。
- 前記維持部材は、前記収容体の内面に形成された突起を含む、請求項6記載の熱交換器。
- 前記維持部材は、前記収容体の一部の断面積が大きくなるような山部分を含み、前記収容体における前記山部分以外の箇所の断面は前記金属繊維構造体の断面よりも小さくなっており、前記収容体における前記山部分が設けられた箇所の断面は前記金属繊維構造体の断面よりも大きくなっている、請求項6記載の熱交換器。
- 前記収容体は、両端の近傍の箇所にそれぞれ曲げ部分が形成された配管を含み、前記金属繊維構造体は前記収容体の内部において各前記曲げ部分の間に配置されている、請求項1乃至13のいずれか一項に記載の熱交換器。
- 前記金属繊維は銅繊維またはアルミニウム繊維を含む、請求項1乃至14のいずれか一項に記載の熱交換器。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020227030506A KR20220136412A (ko) | 2020-02-19 | 2021-02-05 | 열 교환기 |
JP2022501801A JP7386963B2 (ja) | 2020-02-19 | 2021-02-05 | 熱交換器 |
US17/800,939 US20230080550A1 (en) | 2020-02-19 | 2021-02-05 | Heat exchanger |
CN202180015859.8A CN115152323A (zh) | 2020-02-19 | 2021-02-05 | 热交换器 |
EP21756195.0A EP4110010A4 (en) | 2020-02-19 | 2021-02-05 | HEAT EXCHANGER |
JP2023178739A JP2023179718A (ja) | 2020-02-19 | 2023-10-17 | 熱交換器 |
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JP2020026159 | 2020-02-19 | ||
JP2020-026159 | 2020-02-19 |
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WO2021166697A1 true WO2021166697A1 (ja) | 2021-08-26 |
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PCT/JP2021/004407 WO2021166697A1 (ja) | 2020-02-19 | 2021-02-05 | 熱交換器 |
Country Status (7)
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US (1) | US20230080550A1 (ja) |
EP (1) | EP4110010A4 (ja) |
JP (2) | JP7386963B2 (ja) |
KR (1) | KR20220136412A (ja) |
CN (1) | CN115152323A (ja) |
TW (1) | TWI775316B (ja) |
WO (1) | WO2021166697A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS602240U (ja) * | 1983-06-17 | 1985-01-09 | 三菱電機株式会社 | 流体加熱装置 |
JPH09283268A (ja) * | 1996-04-17 | 1997-10-31 | Mamoru Fukumura | 流体の加熱方法 |
JP2003123949A (ja) | 2001-10-15 | 2003-04-25 | Kogi Corp | 電磁誘導加熱装置 |
JP2018085226A (ja) * | 2016-11-24 | 2018-05-31 | 株式会社ブリヂストン | 電磁誘導加熱装置 |
JP2019172275A (ja) | 2018-03-27 | 2019-10-10 | 株式会社巴川製紙所 | 保護部材、及び袋体入り保護部材 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6459854B1 (en) * | 2000-01-24 | 2002-10-01 | Nestec S.A. | Process and module for heating liquid |
US9599404B2 (en) * | 2013-08-27 | 2017-03-21 | Black Night Enterprises, Inc. | Fluid direct contact heat exchange apparatus and method |
US10237926B2 (en) * | 2015-11-09 | 2019-03-19 | Pace, Inc. | Inductive heater for area array rework system and soldering handpieces |
-
2021
- 2021-02-05 EP EP21756195.0A patent/EP4110010A4/en active Pending
- 2021-02-05 WO PCT/JP2021/004407 patent/WO2021166697A1/ja unknown
- 2021-02-05 US US17/800,939 patent/US20230080550A1/en active Pending
- 2021-02-05 KR KR1020227030506A patent/KR20220136412A/ko not_active Application Discontinuation
- 2021-02-05 JP JP2022501801A patent/JP7386963B2/ja active Active
- 2021-02-05 CN CN202180015859.8A patent/CN115152323A/zh active Pending
- 2021-02-18 TW TW110105523A patent/TWI775316B/zh active
-
2023
- 2023-10-17 JP JP2023178739A patent/JP2023179718A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS602240U (ja) * | 1983-06-17 | 1985-01-09 | 三菱電機株式会社 | 流体加熱装置 |
JPH09283268A (ja) * | 1996-04-17 | 1997-10-31 | Mamoru Fukumura | 流体の加熱方法 |
JP2003123949A (ja) | 2001-10-15 | 2003-04-25 | Kogi Corp | 電磁誘導加熱装置 |
JP2018085226A (ja) * | 2016-11-24 | 2018-05-31 | 株式会社ブリヂストン | 電磁誘導加熱装置 |
JP2019172275A (ja) | 2018-03-27 | 2019-10-10 | 株式会社巴川製紙所 | 保護部材、及び袋体入り保護部材 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4110010A4 |
Also Published As
Publication number | Publication date |
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CN115152323A (zh) | 2022-10-04 |
TW202138735A (zh) | 2021-10-16 |
TWI775316B (zh) | 2022-08-21 |
JP7386963B2 (ja) | 2023-11-27 |
US20230080550A1 (en) | 2023-03-16 |
EP4110010A4 (en) | 2023-08-09 |
KR20220136412A (ko) | 2022-10-07 |
EP4110010A1 (en) | 2022-12-28 |
JPWO2021166697A1 (ja) | 2021-08-26 |
JP2023179718A (ja) | 2023-12-19 |
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