WO2018002963A1 - 熱交換器 - Google Patents
熱交換器 Download PDFInfo
- Publication number
- WO2018002963A1 WO2018002963A1 PCT/JP2016/003080 JP2016003080W WO2018002963A1 WO 2018002963 A1 WO2018002963 A1 WO 2018002963A1 JP 2016003080 W JP2016003080 W JP 2016003080W WO 2018002963 A1 WO2018002963 A1 WO 2018002963A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat
- heat exchanger
- heat exchange
- plate
- heat transfer
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
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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
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- 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
- F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
-
- 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
-
- 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
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
-
- 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
- F28D1/047—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 the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—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 the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
-
- 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
- F28F2013/005—Thermal joints
- F28F2013/006—Heat conductive materials
-
- 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
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
Definitions
- the present invention relates to a heat exchanger that controls the temperature of a fluid.
- a heat exchanger is a device that controls the temperature by bringing two objects of different temperatures into contact with each other and heating or cooling one of them, and is used in industries such as boilers, steam generators, food manufacturing, chemical manufacturing, and refrigerated storage. Widely used for applications.
- a heat exchanger is provided in the middle of the piping to control the temperature of the fluid flowing through the piping.
- a plate-shaped body is formed with a flow channel communicating with piping, and a cylindrical pin-shaped heat conductor having a higher thermal conductivity than the body is embedded in the periphery of the flow channel, and a plate-like shape is formed on both sides of the body. Laminate the heat transfer plate and heater plate.
- the heat exchange fluid in the flow path can be heated from the heater plate via the heat transfer plate and the body, and at that time, the heat conductivity is improved by the heat conductor, and high heat exchange efficiency is realized. It is possible.
- the cylindrical pin-shaped heat conductor is fitted and attached to the hole formed in the body without a gap, so depending on the material of the heat conductor and the body.
- the cylindrical pin-shaped heat conductor is fitted and attached to the hole formed in the body without a gap, so depending on the material of the heat conductor and the body.
- the material of the heat conductor and the body could not absorb the difference in thermal expansion between the two, and there was a risk that cracks would occur in the flow path due to the resulting stress.
- the problem to be solved is that in the structure in which the heat conductor is fitted in the hole of the body of the heat exchanger, the difference in thermal expansion between the body and the heat conductor cannot be absorbed without lowering the heat exchange efficiency. There is a possibility that cracks may occur in the road.
- the present invention can absorb the thermal expansion difference between the body and the heat conductor without reducing the heat exchange efficiency.
- a heat transfer member that exchanges heat with the heat exchange fluid through the body, the heat transfer member being in contact with an outer surface of the body;
- a member main body having a contact surface; and a plurality of wall-like heat conductors that protrude from the contact surface of the member main body and are disposed inside the body, wherein the body avoids the flow path.
- a plurality of wall-like heat conductors are respectively fitted to each other by insertion, and are provided with a plurality of slit-like holes that are arranged inside, and each heat conductor is smaller than the fitted holes.
- a heat exchanger that is formed and defines a gap between the holes.
- the heat exchanger of the present invention can absorb the thermal expansion difference between the body and the heat conductor through the gap in the structure in which the heat conductor is fitted into the hole of the body of the heat exchanger, and the flow path is cracked. Can be prevented. Moreover, by making the heat conductor wall-like, it is possible to prevent the heat exchange efficiency from being lowered even if the heat conductor is made smaller than the hole.
- FIG. 5 is a sectional view taken along line VV in FIG. 4.
- 3A and 3B show a body used in the heat exchanger of FIG. 3, in which FIG. 3A is a bottom view, and FIG. 3B is a cross-sectional view taken along line VI-VI in FIG.
- the heat-transfer plate used for the heat exchanger of FIG. 3 is shown, (A) is a top view, (B) is a side view.
- (A) is a top view
- (B) is sectional drawing. It is a conceptual diagram which shows a part of flow path provided in the body of the heat exchanger of FIG. It is a table
- (A) is a flow rate of 10 L / min
- (B) is 1 L / min. This is the case for min.
- (A) is the graph which plotted the result of FIG. 10 (A)
- (B) is the graph which plotted the result of FIG. 10 (B).
- the heat conductor is walled for the purpose of absorbing the difference in thermal expansion between the body and the heat conductor without lowering the heat exchange efficiency. This was realized by forming the hole portion of the body into a slit shape and forming the heat conductor smaller than the hole portion.
- the heat exchanger includes a body having a flow path for circulating the heat exchange fluid, and a heat transfer member that exchanges heat with the heat exchange fluid via the body, and the heat transfer member Includes a member main body having a contact surface that contacts the outer surface of the body, and a plurality of wall-like heat conductors that protrude from the contact surface of the member main body and are arranged inside the body.
- the body includes a plurality of slit-shaped holes that allow a plurality of wall-like heat conductors to be fitted by insertion at positions avoiding the flow path and arranged inside. Each heat conductor is formed smaller than the hole to which it is fitted, and defines a gap between the heat conductor.
- the heat conductor is formed to have a shorter dimension in the insertion direction than the hole, thereby defining a gap.
- the heat conductor can also have a smaller cross-sectional shape in the direction intersecting the insertion direction.
- the hole is provided through the body, and the heat transfer member is provided in a pair with the body interposed therebetween.
- the heat conductors corresponding to each other are inserted from both sides of the hole, and the gap is formed between the corresponding heat conductors. It is good also as a structure which divides. However, only one heat transfer member can be provided. In this case, the hole need not be provided through the body.
- the heat conductor may be formed integrally with the member body. However, the heat conductor may be formed separately from the member main body, and the contact surface of the member main body may be in contact with the heat conductor.
- the flow path may include a parallel path arranged in parallel and a folded-back path that connects the parallel paths, and the heat conductor may be positioned between the parallel paths along the parallel path of the flow path. .
- the folding path may be a bent shape having corners inside the folded shape.
- the folding path may have a curved shape with no corners outside the folded shape.
- Heat exchange unit] 1 is a perspective view of a heat exchange unit having a heat exchanger according to Embodiment 1 of the present invention
- FIG. 2 is an exploded perspective view of the heat exchange unit.
- the heat exchange unit 1 of the present embodiment is provided in the middle of the pipes 3a and 3b through which the heat exchange fluid flows, and is used in a state of being fixed to a wall or the like, for example.
- the heat exchange unit 1 causes the heat exchange fluid flowing in from the upstream pipe 3a to flow out into the downstream pipe 3b through the inside.
- the heat exchange unit 1 controls or adjusts the temperature of the heat exchange fluid by heating or cooling.
- the heat exchange fluid is heated by the heat exchange unit 1.
- the heat exchange fluid is not particularly limited.
- These are corrosive acids, alkalis such as ammonia, potassium hydroxide and sodium hydroxide, solutions or gases such as metal salts such as chlorinated silicon, and high purity water.
- These heat exchange fluids are used as raw materials for reaction with other substances or as chemicals in a reaction process such as an etching solution, and are controlled to an appropriate temperature by the heat exchange unit 1 during use.
- the heat exchange unit 1 of the present embodiment is configured by housing a heat exchanger 7 in a case 5.
- a heat insulating material (not shown) is wound around the heat exchanger 7. It is also possible to omit the case 5 and use the heat exchanger 7 alone.
- Heat exchanger 3 is a side view of the heat exchanger 7 used in the heat exchange unit 1 of FIG. 1, FIG. 4 is a plan view thereof, and FIG. 5 is a cross-sectional view taken along line VV of FIG.
- the heat exchanger 7 includes a body 9, a pair of heat transfer plates 11, a pair of heater plates 13, and a pair of pressing plates 15, and heat transfer is performed on both sides of the body 9.
- the plate 11, the heater plate 13, and the pressing plate 15 are laminated in this order, and the whole is fastened by bolts 17 and nuts 19.
- FIG. 6 shows a body 9 used in the heat exchanger 7 of FIG. 3, (A) is a plan view, and (B) is a cross-sectional view taken along line VI-VI of (A).
- the body 9 is formed in a planar rectangular plate shape as shown in FIGS. Fastening holes 21 are formed in the four corners of the body 9 in the plate thickness direction.
- the material of the body 9 is made of a material that is stable against the heat exchange fluid. That is, in the temperature range where heat exchange is performed, a material that does not react with the inner surface of the flow path 23 of the body 9 described later and the heat exchange fluid or a material that does not elute components from the inner surface of the flow path 23 is selected. .
- the reactivity (corrosiveness) of the heat exchange fluid varies depending on the material and contact temperature of the inner surface of the flow path 23, and the allowable range of purity after heat exchange varies depending on the use and properties of the heat exchange fluid. It cannot be specified in general. For example, metal halides and etching agents used in semiconductor manufacturing use high-purity substances, and thus purity reduction due to heat exchange treatment is not allowed. However, in the case of a heat exchanger for turbines, changes in the purity of the heat exchange fluid due to the heat exchange process are often not a problem.
- the material of the body 9 is appropriately selected from metals such as iron, carbon steel, stainless steel, aluminum, and titanium, synthetic resins such as fluorine resin and polyester, ceramics, and the like.
- the body 9 has a channel 23 and a plurality of holes 25 formed therein.
- the flow path 23 circulates the heat exchange fluid and is formed in a closed cross-sectional shape from one end to the other end in the longitudinal direction of the body 9.
- the flow path 23 is formed in a concave groove shape, and its opening is closed by a lid 29.
- the channel 23 is formed on one side surface of the body 9 by cutting or etching, and the lid 29 is attached to the opening of the channel 23 by welding or the like.
- the lid 29 is made of the same material as that of the body 9 but can be made of a different material.
- the flow path 23 of the present embodiment has a wave shape that is folded back and forth between the ends of the body 9 in a plan view.
- the flow path 23 includes a parallel path 31 arranged in parallel along the width direction of the body 9 and a folded-back path 33 that connects between the adjacent parallel paths 31.
- the parallel path 31 is arranged in the longitudinal direction of the body 9 with an equally spaced gap.
- the parallel paths 31 at both ends are formed shorter than the other parallel paths 31 and communicate with the connection ports 39 at both ends via the bent portions 35 and the communication paths 37 along the longitudinal direction.
- a joint 41 for connecting to the pipes 3a and 3b is attached to the connection port 39, respectively.
- the folding path 33 is formed along the longitudinal direction of the body 9, and has a bent portion 35 between the parallel path 31.
- the bent portion 35 has a corner 43 on the inner side of the folded shape of the folded path 33, and has a curved surface 45 having no corner on the outer side of the folded shape (see FIG. 9).
- the turn-back path 33 can cause the heat exchange fluid to generate a turbulent flow due to the corner 43 on the downstream side of the bent portion 35 and improve the heat exchange efficiency. That is, in the heat exchange fluid, the heat transfer between the low density portion and the high density portion becomes active, and the heat transfer fluid can be efficiently transferred between the inner surface of the flow path 23. In addition, the return path 33 suppresses the occurrence of excessive resistance due to excessive turbulence due to the curved surface 45 of the bent portion 43.
- a hole 25 is formed at a position avoiding the flow path 23 as shown in FIGS.
- a plurality of holes 25 are provided between the parallel paths 31 of the flow paths 23 through the body 9 in the plate thickness direction, and heat conductors 51 described later are respectively inserted into the holes 25. ing.
- Each hole 25 extends in the width direction of the body 9 along the parallel path 31 from the inner side of the return path 33 of the flow path 23 in a plan view, and in the width direction rather than the dimension in the longitudinal direction of the body 9. It has a slit shape with large dimensions. Both end portions of the hole portion 25 are formed in an arc shape. The closer the hole 25 and the flow path 23 are, the better. However, it is necessary not to impair the strength, function, etc. of the body 9 that partitions the hole 25 and the flow path 23.
- FIG. 7 shows the heat transfer plate 11
- (A) is a bottom view
- (B) is a side view
- FIG. 8 shows the relationship between the hole of the body and the heat conductor of the heat transfer plate
- (A) Is a plan view
- (B) is a cross-sectional view.
- the pair of heat transfer plates 11 are heat transfer members of the present embodiment, and exchange heat with the heat exchange fluid via the body 9.
- Each heat transfer plate 11 includes a plate main body 49 that is a member main body and a heat conductor 51.
- a pair of heat-transfer plate 11 is the same structure, only one side is demonstrated fundamentally.
- the plate body 49 is formed in a planar rectangular plate shape corresponding to the body 9.
- the plate body 49 of this embodiment has a smaller plate thickness than the body 9.
- fastening holes 53 pass through in the plate thickness direction.
- the material of the plate body 49 is metal, synthetic resin, ceramics, etc. having higher thermal conductivity than the body 9.
- One side surface of the plate body 49 is a contact surface 49 a that contacts the outer surface 9 a of the body 9.
- a plurality of thermal conductors 51 are provided on the contact surface 49a.
- the heat conductor 51 has a wall shape that protrudes from the contact surface 49 a of the plate body 49 and is installed inside the body 9.
- the heat conductor 51 of this embodiment is formed integrally with the plate body 49 and is made of the same material as the plate body 49. Therefore, the heat conductor 51 is made of a material having higher heat conductivity than the body 9.
- the body 9 is made of stainless steel, and the plate body 49 and the heat conductor 51 are made of aluminum.
- the heat conductor 51 can be formed separately from the plate body 49.
- the heat conductor 51 may be made of a material different from that of the plate body 49.
- the heat conductors 51 are respectively inserted into the hole portions 25 of the body 9, thereby arranging the heat conductors 51 inside the body 9.
- Each heat conductor 51 is formed smaller than the inserted hole 25.
- the dimension in the insertion direction is formed short, and a gap G1 in the insertion direction is defined in the hole 25.
- the heat conductors 51 corresponding to each other of the pair of heat transfer plates 11 sandwiching the body 9 are inserted into the same hole 25 of the body 9 from both sides, and the corresponding heat conductors 51 are inserted.
- a gap G1 is defined between them. The gap G1 makes it possible to absorb the difference in thermal expansion between the body 9 and the heat conductor 51.
- the cross-sectional shape of the heat conductor 51 in the cross direction with respect to the insertion direction is slightly smaller than the hole portion 25 of the body 9 in a plan view.
- the gaps G2 and G3 that can absorb the difference in thermal expansion between the body 9 and the heat conductor 51 are provided together with the gap G1.
- the gap G2 is a gap in the width direction of the body 9, and the gap G3 is a gap in the longitudinal direction of the body 9.
- the gaps G2 and G3 are smaller than the gap G1, and the gap G3 is smaller than the gap G2.
- the gaps G2 and G3 can be omitted. It is also possible to omit the gap G1 and provide one or both of the gaps G2 and G3.
- each of the pair of heater plates 13 is a heating element of the present embodiment, and is formed of a mica heater.
- the heater plate 13 is not limited to a mica heater, and a ceramic heater such as an alumina heater or another heater may be used.
- a pair of heater plate 13 is the same structure, only one side is demonstrated fundamentally.
- the heater plate 13 is formed in the same shape as the plate body 49 of the heat transfer plate 11. However, the heater plate 13 is thinner than the plate body 49. The thickness of the heater plate 13 is arbitrarily set according to the capacity of the heater.
- the heater plate 13 is connected to a power supply wiring 55 and generates heat up to a set temperature by energization control.
- the heater plate 13 is superimposed on the other side surface of the heat transfer plate 11 and heats the heat exchange fluid in the flow path 23 via the heat transfer plate 11 and the body 9.
- Fastening holes are formed at the four corners of the heater plate 13, similarly to the heat transfer plate 11 and the body 9.
- a cooling plate may be used instead of the heater plate 13.
- a Peltier element using the Peltier effect can be used.
- the pair of presser plates 15 are formed in the same shape as the plate body 49 of the heat transfer plate 11, and can be formed of, for example, metals, synthetic resins, ceramics, or the like. Fastening holes (not shown) are formed at the four corners of the presser plate 15 as in the heat transfer plate 11 and the like. These presser plates 15 are stacked on the heater plates 13 on both sides, and are fastened by bolts 17 and nuts 19 on the outer side of the laminated structure of the heat exchanger 7.
- the bolts 17 are inserted through the pair of pressing plates 15, the pair of heater plates 13, the pair of heat transfer plates 11, the fastening holes 21 and 53 of the body 9, and the head portion 57 is positioned on the one pressing plate 15.
- the nut 19 positioned on the other pressing plate 15 is screwed to the tip of the male screw portion 59.
- the case 5 is configured by attaching a box-like portion 63 on a plate-like base portion 61.
- the material of the case 5 is not particularly limited, but is made of a metal such as stainless steel in this embodiment.
- the base portion 61 is formed in a rectangular plate shape, and a fixing hole 65 is formed. With this fixing hole 65, the heat exchange unit 1 can be fixed to a wall or the like.
- the material of the base portion 61 is metal or the like, and is stainless steel in this embodiment.
- plate-like mounting plates 67a and 67b for mounting the box-shaped portion 63 are erected.
- One mounting plate 67a is formed higher than the other mounting plate 67b, and a recess 69 for supporting the wiring 55 of the heat exchanger 7 is formed at the upper end.
- an intermediate plate 71 bent in a raised shape is attached by screws 73.
- the middle plate 71 is made of a metal or the like, similar to the base portion 61, and is formed of stainless steel in this embodiment.
- a heat exchanger 7 is attached on the intermediate plate 71. In this embodiment, the heat exchanger 7 is not directly in contact with the intermediate plate 71 using the bolts 17 and nuts 19 that fasten the body 9, the heat transfer plate 11, and the holding plate 15 of the heat exchanger 7. .
- the nut 19 abuts against the intermediate plate 71 and the tip of the male screw portion 59 of the bolt 17 protruding from the nut 19 passes through the intermediate plate 71, and a fixing nut 75 is screwed into the tip of the male screw portion 59.
- plate-like pedestals 77 are erected on both sides of the middle plate 71 in the longitudinal direction.
- a concave portion 79 is formed at the upper end of the pedestal portion 77, and the joint 41 of the heat exchanger 7 is placed and supported by the concave portion 79.
- the box-shaped portion 63 is attached to the attachment plates 67a and 67b of the base portion 61 with screws 81.
- the box-shaped part 63 is made of metals or the like, like the base part 61, and is stainless steel in this embodiment.
- the box-shaped part 63 is formed with a slit 83 for inserting the joint 41 of the heat exchanger 7 and a slit 85 for inserting the wiring 55 of the heat exchanger 7.
- the wiring 55 is held by a clamp member 87 attached to the side surface of the box-shaped portion 63 after being pulled out from the slit 85.
- Heat exchange, etc. When the heat exchange fluid flowing through the pipes 3a and 3b is set to a desired temperature by the heat exchange unit 1, first, the heater plate 13 of the heat exchanger 7 is heated by energization control. When the heater plate 13 generates heat, the heat is transmitted to the heat transfer plate 11. Heat is transferred from the heat transfer plate 11 to the body 9 through the plate body 49 and the heat conductor 51. The heat exchange fluid is heated by heat exchange between the body 9 and the heat exchange fluid flowing in the flow path 23 (see FIG. 5).
- the heat conductivity can be improved by the heat conductor 51 reaching the inside of the body 9, and high heat exchange efficiency can be realized.
- the return path 33 of the flow path 23 causes turbulent flow due to the corners 43 in the heat exchange fluid on the downstream side of the bent portion 35, and the density of the heat exchange fluid is low.
- the heat transfer between the part and the part having a high density becomes active, and it is possible to efficiently transfer the heat between the heat exchange fluid and the inner surface of the flow path 23, thereby realizing higher heat exchange efficiency. .
- the wall-shaped heat conductor 51 is located along the parallel path 31 of the flow path 23 where turbulent flow occurs, heat can be efficiently transferred between the heat exchange fluid and the inner surface of the flow path 23.
- the part to be moved can be effectively heated, and higher heat exchange efficiency is realized.
- the heat exchanger 7 of a present Example since the heat conductor 51 is formed in the wall shape, compared with the conventional cylindrical pin-shaped heat conductor, the heat exchanger 7 as a whole is heated.
- the surface area of the conductor 51 can be increased up to about four times according to the size, and not only the heat exchange efficiency is reduced, but also high heat exchange efficiency is realized.
- the heat transfer plate 11 expands so as to fill the gaps G1, G2, and G3.
- the difference in thermal expansion can be absorbed.
- the gaps G2 and G3 are filled, the degree of adhesion between the heat conductor 51 and the hole 25 of the body 9 is increased, and the heat exchange efficiency can be adjusted.
- the heat exchange fluid flow rate is 10 L / min
- the heater plate set temperature is 100 ° C, 200 ° C, 300 ° C, 400 ° C, 500 ° C.
- the temperature of the exchange fluid was measured.
- Example 1 was compared with Comparative Example when the flow rate of the heat exchange fluid was 1 L / min.
- FIG. 10 is a chart showing the measurement results of Example 1 and the comparative example in comparison, where (A) shows the case where the flow rate of the heat exchange fluid is 10 L / min, and (B) shows the case where it is 1 L / min. Show. 11A and 11B are graphs plotting the results of FIGS. 10A and 10B, respectively.
- Example 1 when the flow rate is 10 L / min, there is no significant difference between Example 1 and the comparative example. Therefore, in the comparative example, a heat conversion rate equivalent to that of Example 1 is obtained at a flow rate of 10 L / min.
- the heat conversion rate is the ratio of the outlet temperature to the temperature of the heater plate (the same applies hereinafter).
- Example 1 and Comparative Example are applied when the flow rate is 1 L / min, the Comparative Example is at 100 ° C. to 400 ° C. with respect to Example 1 as shown in FIGS. 10 (B) and 11 (B). It can be seen that the heat conversion rate has dropped. In particular, at a set temperature of 300 ° C., the heat conversion rate has dropped significantly until it falls below 70%.
- FIG. 12 is a graph showing a comparison of heat conversion rates at different flow rates of the heat exchange fluid for Example 1.
- the broken line is a line with a heat change rate of 90%.
- the heat conversion rate is any case when the flow rate is 0.5 L / min, 1 L / min, 5 L / min, 10 L / min, 20 L / min, 30 L / min. It is over 90%.
- Example 1 Since the response of the comparative example was about 50 seconds at any flow rate, in Example 1, the response can be greatly improved by realizing a high heat exchange rate.
- Example 1 as shown in FIGS. 13A to 13C, the case temperature is 60 ° C. to 70 ° C. as in the comparative example, although the heat insulating material is smaller than that in the comparative example. It was stable. Therefore, Example 1 has confirmed that the heat exchange efficiency was improving rather than the comparative example.
- the heat exchanger 7 of the present embodiment includes a body 9 having a flow path 23 for circulating the heat exchange fluid and a heat transfer plate 11 that exchanges heat with the heat exchange fluid via the body 9. .
- the heat transfer plate 11 includes a plate main body 49 having a contact surface 49 a that contacts the outer surface 9 a of the body 9, and a plurality of wall-shaped heat conductors that protrude from the contact surface 49 a of the plate main body 49 and are disposed inside the body 9. 51.
- the body 9 includes a plurality of slit-shaped hole portions 25 that allow a plurality of wall-shaped heat conductors 51 to be fitted by insertion at positions avoiding the flow path 23 to be arranged inside.
- Each of the heat conductors 51 is formed smaller than the hole 25 into which the heat conductor 51 is fitted, and defines a gap G1, G2, or G3 between the heat conductor 51 and the hole 25.
- the difference in thermal expansion between the body 9 and the heat conductor 51 is defined as the gap G1, It can be absorbed by G2 or G3, and cracks can be prevented from occurring in the flow path 23.
- the heat conductor 51 is formed into a wall shape, so that the heat exchange efficiency can be prevented from being lowered even if the heat conductor 51 is made smaller than the hole 25, and heat exchange is also performed. It is also possible to improve efficiency.
- the heat conductor 51 of the present embodiment is formed to have a shorter dimension in the insertion direction than the hole portion 25 to partition the gap G1. Therefore, the gap G1 can reliably absorb the difference in thermal expansion between the heat conductor 51 and the body 9.
- the heat conductor 51 is formed to have a smaller cross-sectional shape in the direction intersecting the insertion direction than the hole portion 25 to partition the gaps G2 and G3, so that the thermal expansion of the heat conductor 51 and the body 9 is achieved.
- the holes 25 are provided through the body 9, the heat transfer plates 11 are provided in pairs with the body 9 in between, and the heat conductors 51 corresponding to each other in the pair of heat transfer plates 11 are the same. Inserted from both sides of the hole 25, the gap G1 is defined between the corresponding heat conductors 51.
- the heat transfer plates 11 can be arranged on both sides of the body 9 to reliably perform heat exchange.
- the heat conductor 51 of this embodiment is formed integrally with the plate body 49, it can be easily assembled to the body 9.
- the flow path 23 includes a parallel path 31 arranged in parallel and a folded-back path 33 that connects the parallel paths 31, and the heat conductor 51 extends between the parallel paths 31 along the parallel path 31 of the flow path 23. Located in.
- the wall-shaped heat conductor 51 can be effectively arranged with respect to the flow path 23.
- the folding path 33 since the folding path 33 has a bent shape with the corners 43 inside, the turbulent flow caused by the corners 43 is generated in the heat exchange fluid on the downstream side, and the density of the heat exchange fluid is reduced.
- the heat transfer between the low part and the high density part becomes active, and it is possible to efficiently transfer heat between the heat exchange fluid and the inner surface of the flow path 23, thereby realizing higher heat exchange efficiency.
- the wall-shaped heat conductor 51 is located along the parallel path 31 of the flow path 23 where turbulent flow occurs, heat can be efficiently transferred between the heat exchange fluid and the inner surface of the flow path 23.
- the part to be moved can be effectively heated, and higher heat exchange efficiency is realized.
- the folding path 33 has a bent shape having a curved surface 45 having no corners outside the folded shape, excessive turbulent flow can be prevented and pressure loss of the heat exchange fluid can be suppressed.
- FIG. 14 is a cross-sectional view of a heat exchanger according to Embodiment 2 of the present invention.
- the description corresponding to that of the first embodiment is omitted by using the same reference numerals or the same reference numerals with A added thereto.
- the heat conductor 51A is provided only on one heat transfer plate 11Aa of the pair of heat transfer plates 11Aa and 11Ab.
- the heat transfer plate 11Ab does not have a heat conductor and is composed of only a plate-like plate body 49.
- the heat conductor 51A extends in the longitudinal direction with respect to the first embodiment, and a gap G1 in the insertion direction is defined between the heat conductor 51A and the other heat transfer plate 11Ab.
- FIG. 15 is a conceptual diagram showing a part of the flow path of the body of the heat exchanger according to the third embodiment of the present invention.
- the same reference numerals are used for the components corresponding to those in the first embodiment, or redundant description is omitted using the same reference numerals with B added thereto.
- the outer side of the folded shape of the folded portion 33B of the flow path 23B is a curved shape having no corners as a whole.
- the turbulent flow is generated by the inner corner 43 of the folded shape of the folded path 33B, and the excessively turbulent flow is more reliably prevented by the curved shape having no corner as a whole outside the folded shape. can do. For this reason, in this embodiment, it is possible to reliably generate turbulent flow while minimizing the pressure loss of the heat exchange fluid.
- the third embodiment can achieve the same operational effects as the first embodiment.
- FIG. 16 is a side view, partly in section, of a heat exchange unit having a heat exchanger according to Embodiment 4 of the present invention.
- the same reference numerals are used for the components corresponding to those in the first embodiment, or the same reference numerals are denoted by C, and redundant description is omitted.
- the description of case 5 is omitted.
- the heat exchanging unit 1 ⁇ / b> C has a reflecting material 89 arranged around the heat exchanger 7.
- the reflector 89 has a mirror-like inner surface 89 a facing the heat exchanger 7, and reflects the radiant heat from the heat exchanger 7 to improve the heat exchange efficiency of the heat exchanger 7.
- the reflective material 89 can be formed of a metal plate or foil. However, the reflective material 89 can also be constituted by the case 5. In this case, the inner surface of the case 5 may be finished to a mirror surface.
- Example 4 the heat exchange efficiency of the heat exchanger 7 can be further improved.
- the fourth embodiment can achieve the same effects as those of the first embodiment.
- FIG. 17 is a cross-sectional view showing a heat transfer plate used in the heat exchanger according to Embodiment 5 of the present invention.
- the description corresponding to that in the first embodiment is omitted by using the same reference numerals or the same reference numerals with D added thereto.
- the heat transfer plate 11D is made of copper and has a silver coating 91 formed on the surface thereof.
- the heat transfer plate 11D In the case of forming the heat transfer plate 11D with metals, it is common to use aluminum as a material. However, the melting point of aluminum is relatively low at 660 ° C., and there is a limit to increasing the temperature of the heat exchanger.
- the heat transfer plate 11D is formed of copper having a relatively high melting point of 1080 ° C., so that it is possible to cope with a high temperature of the heat exchanger.
- copper is a contaminant in some applications such as semiconductor manufacturing processes
- the surface 91 of the heat transfer plate 11D formed of copper is coated with silver as a non-contaminant.
- the non-contaminating substance is not limited to silver, and an appropriate one according to the use of the heat exchanger may be adopted.
- Heat exchanger 9 Body 9a: Outer surface 11: Heat transfer plate (heat transfer member) 23: Channel 25: Hole 31: Parallel path 33: Return path 43: Corner 49: Plate body (member body) 49a: Contact surface 51: Thermal conductor G1, G2, G3: Gap
Abstract
Description
図1は、本発明の実施例1に係る熱交換器を有する熱交換ユニットの斜視図、図2は、同熱交換ユニットの分解斜視図である。
図3は、図1の熱交換ユニット1に用いられる熱交換器7の側面図、図4は、同平面図、図5は、図4のV-V線に沿った断面図である。
ケース5は、図1~図3のように、板状のベース部61上に箱状部63が取り付けられて構成されている。ケース5の材質は、特に限定されるものではないが、本実施例においてステンレス鋼等の金属類からなる。
熱交換ユニット1によって配管3a、3bを流れる被熱交換流体を所望の温度にする際は、まず熱交換器7のヒータープレート13を通電制御により発熱させる。ヒータープレート13が発熱すると、その熱が伝熱プレート11に伝達される。伝熱プレート11からは、プレート本体49及び熱伝導体51を介してボディ9に熱が伝達される。そして、ボディ9とその流路23内を流れる被熱交換流体との間で熱交換が行われることで、被熱交換流体が加熱されることになる(図5参照)。
実施例1と比較例との間で設定温度に対する出口温度を比較した。比較例は、実施例1の壁状の各熱伝導体51に代えて、国際公開第WO2013/180047号に倣って複数の円柱ピン状の熱伝導体を採用したものである。
実施例1の熱交換器7を用い、ヒータープレート13の温度を200℃とし、流量を6L/min、10L/min、20L/minとした場合について、出口温度が100℃から上昇して200℃付近で安定するまでに要した時間をレスポンスとして計測した。図13(A)~(C)は、それぞれ流量が6L/min、10L/min、20L/minの結果である。
本実施例の熱交換器7は、被熱交換流体を流通させる流路23を有するボディ9と、ボディ9を介して被熱交換流体との間で熱交換を行う伝熱プレート11とを備える。伝熱プレート11は、ボディ9の外面9aに接触する接触面49aを有するプレート本体49と、プレート本体49の接触面49aから突出してボディ9の内部に配置された複数の壁状の熱伝導体51とを備える。ボディ9は、流路23を避けた位置で複数の壁状の熱伝導体51をそれぞれ挿入により嵌合させて内部への配置を行わせる複数のスリット状の孔部25を備える。各熱伝導体51は、嵌合している孔部25よりも小さく形成されて、孔部25との間に隙間G1、G2又はG3を区画する。
9:ボディ
9a:外面
11:伝熱プレート(伝熱部材)
23:流路
25:孔部
31:並列路
33:折り返し路
43:角
49:プレート本体(部材本体)
49a:接触面
51:熱伝導体
G1,G2,G3:隙間
Claims (8)
- 被熱交換流体を流通させる流路を有するボディと、
前記ボディを介して前記被熱交換流体との間で熱交換を行う伝熱部材とを備え、
前記伝熱部材は、前記ボディの外面に接触する接触面を有する部材本体と、該部材本体の接触面から突出して前記ボディの内部に配置された複数の壁状の熱伝導体とを備え、
前記ボディは、前記流路を避けた位置で前記複数の壁状の熱伝導体をそれぞれ挿入により嵌合させて前記内部への配置を行わせる複数のスリット状の孔部を備え、
各熱伝導体は、嵌合している孔部よりも小さく形成されて該孔部との間に隙間を区画する、
ことを特徴とする熱交換器。 - 請求項1記載の熱交換器であって、
前記熱伝導体は、それぞれ前記孔部よりも挿入方向での寸法が短く形成されて前記隙間を区画する、
ことを特徴とする熱交換器。 - 請求項1又は2記載の熱交換器であって、
前記孔部は、前記ボディを貫通して設けられ、
前記伝熱部材は、前記ボディを挟んで一対設けられ、相互に対応する熱伝導体が前記孔部の両側から挿入されて該対応する熱伝導体間に前記隙間を区画する、
ことを特徴とする熱交換器。 - 請求項1~3の何れか一項に記載の熱交換器であって、
前記熱伝導体は、前記部材本体に一体に形成されている、
ことを特徴とする熱交換器。 - 請求項1~4の何れか一項に記載の熱交換器であって、
前記熱伝導体は、それぞれ前記孔部よりも前記挿入方向に対する交差方向での断面形状が小さく形成されて前記隙間を区画する、
ことを特徴とする熱交換器。 - 請求項1~5の何れか一項に記載の熱交換器であって、
前記流路は、並列に配置された並列路と、該並列路をつなぐ折り返し形状の折り返し路とを備え、
前記熱伝導体は、前記流路の並列路に沿って前記並列路間に位置する、
ことを特徴とする熱交換器。 - 請求項6記載の熱交換器であって、
前記折り返し路は、前記折り返し形状の内側が角を有する屈曲形状である、
ことを特徴とする熱交換器。 - 請求項7記載の熱交換器であって、
前記折り返し路は、前記折り返し形状の外側が角のない湾曲形状である、
ことを特徴とする熱交換器。
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CN201680007495.8A CN108139181B (zh) | 2016-06-27 | 2016-06-27 | 热交换器 |
KR1020177016626A KR101974531B1 (ko) | 2016-06-27 | 2016-06-27 | 열교환기 |
US15/545,575 US10859325B2 (en) | 2016-06-27 | 2016-06-27 | Heat exchanger |
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TW201800712A (zh) | 2018-01-01 |
JP6247429B1 (ja) | 2017-12-13 |
KR101974531B1 (ko) | 2019-05-02 |
US20190107337A1 (en) | 2019-04-11 |
US10859325B2 (en) | 2020-12-08 |
TWI621824B (zh) | 2018-04-21 |
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