WO2008014998A1 - Refroidisseur pour refroidir un fluide provenant d'un matériau composite renforcé par des fibres de carbone - Google Patents

Refroidisseur pour refroidir un fluide provenant d'un matériau composite renforcé par des fibres de carbone Download PDF

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Publication number
WO2008014998A1
WO2008014998A1 PCT/EP2007/006854 EP2007006854W WO2008014998A1 WO 2008014998 A1 WO2008014998 A1 WO 2008014998A1 EP 2007006854 W EP2007006854 W EP 2007006854W WO 2008014998 A1 WO2008014998 A1 WO 2008014998A1
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WO
WIPO (PCT)
Prior art keywords
tubes
cooler
carbon
fiber composite
carbon fiber
Prior art date
Application number
PCT/EP2007/006854
Other languages
German (de)
English (en)
Inventor
Axel Schnura
Original Assignee
Axel Schnura
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Axel Schnura filed Critical Axel Schnura
Priority to EP07801499A priority Critical patent/EP2047202A1/fr
Publication of WO2008014998A1 publication Critical patent/WO2008014998A1/fr

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Classifications

    • 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
    • F28D1/053—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 straight
    • F28D1/0535—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 straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • 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
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • 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
    • F28F21/02—Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B29C66/5432—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles joining hollow covers and hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2063/00—Use of EP, i.e. epoxy resins or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2307/00—Use of elements other than metals as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/18—Heat-exchangers or parts thereof
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082—Charged air coolers
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091—Radiators
    • F28D2021/0094—Radiators for recooling the engine coolant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives

Definitions

  • the invention relates to a cooler for cooling a fluid.
  • the fluid may be a gas or a liquid.
  • the radiator has a first box with a port for supplying the fluid and a second box with a second port for discharging the fluid.
  • the first box is fluidly connected to the second box through tubes, wherein the cooler is configured so that the fluid can flow through the radiator from the first port to the second port via the tubes.
  • Such coolers are known as conventional vehicle coolers. They usually have two so-called water boxes made of glass fiber reinforced polyamide and a radiator block of a tube / rib system. The open ends of the tubes are held together at each end by a tubesheet. The water boxes are each placed with a seal on the tube sheets. A subsequent beading then closes the entire system tight.
  • a disadvantage of this system is that such radiator high pressures and temperatures, such as those encountered in high-performance engines, not withstand.
  • a heat exchanger block for a liquid-air heat exchanger is known. This has longitudinally flowed through liquid heat exchanger medium and perpendicularly flowed around by air pipes, substantially perpendicular to the tubes on the outer circumference arranged ribs and provided at the pipe ends, the individual tubes on the liquid side interconnecting tube sheets.
  • the heat exchanger block is integrally formed as a pressure or injection molded part.
  • a plastic can be used as a material for this one-piece manufactured heat exchanger block.
  • a plastic can be used as a material for this one-piece manufactured heat exchanger block.
  • a plastic can be used. To increase the strength and / or the thermal conductivity of this plastic may be provided with a suitable filling, such as glass, carbon and / or aluminum fibers. Due to the manufacturing process, any carbon fibers present may be in random orientation and as relatively short pieces of fiber.
  • a countercurrent heat exchanger with a plurality of loops is known, wherein between these loops a plurality of substantially parallel plates is arranged.
  • the loops are connected to each other in a fluid-conducting manner.
  • the plates and loops may be made of carbon / carbon composite.
  • the object of the present invention is to provide a cooler which offers high stability at high pressures and temperatures and at the same time allows a compact construction. Furthermore, a method to its Production and use of this cooler can be specified.
  • a cooler for cooling a fluid wherein the cooler has a first box with a first port for supplying the fluid and a second box with a second port for discharging the fluid, wherein the first box with the second box fluidly through Pipes connected.
  • the radiator is constructed so that the fluid can flow through the radiator from the first port to the second port via the tubes.
  • the tubes consist of a carbon fiber and a binder containing carbon fiber composite material.
  • the carbon fiber composite is a composite in which carbon fibers are oriented parallel to one another in one or more directions or in the form of a carbon fiber fabric, the fibers being held together by the binder. Thus, oriented fibers are present in the carbon fiber composite.
  • the carbon fiber composite forming the tubes is constructed in such a way that on the one hand fibers extend over the entire length of the respective tubes and on the other hand carbon fibers run radially around the interior of the respective tubes.
  • Such pipes are extremely resistant to being forced apart by high pressure inside the pipes.
  • the thermal conductivity of the carbon fiber composite is increased by having exposed carbon fibers on a surface of the carbon fiber composite. That is, at least a portion of the carbon fibers of the carbon fiber composite have an exposed surface on each surface of the carbon fiber composite.
  • an exposed surface of a carbon fiber is meant a portion of the total surface area of the carbon fiber which is not surrounded by the binder of the carbon fiber composite.
  • the exposed surfaces of the carbon fibers significantly improve the heat transfer from the carbon fibers and thus from the surfaces of the tubes to the surrounding air or from the interior of the cooler to the carbon fibers and thus to the inner surface of the tubes.
  • the thermal conductivity can also be increased by containing the carbon fiber composite carbon particles.
  • the carbon particles in the carbon fiber composite greatly enhance thermal conduction across the grain of the carbon fibers. As a result, a heat conduction between adjacent carbon fibers is significantly improved.
  • the carbon fiber composite thus has less predetermined by the fiber direction of the carbon fibers anisotropic properties, because a heat conduction is no longer only predominantly in the direction of the carbon fibers but also transversely to this direction. The efficiency of the cooler is thereby greatly increased.
  • the carbon particles may be substantially spherical. They may have an average diameter or a mean spatial extent of 1 nm to 100 .mu.m, preferably 10 nm to 1 .mu.m, in particular 50 nm to 500 nm.
  • the thermal conductivity is particularly good when exposed to a surface of the carbon fiber composite Carbon fibers are present and in addition carbon particles are contained in the carbon fiber composite.
  • a carbon fiber composite material can provide a very high thermal conductivity with a small length expansion as a result of an increase in temperature. Furthermore, the inventors have recognized that can be made of carbon fiber composite very flat tubes, which, in contrast to aluminum tubes are sufficiently stable even at high pressures and can not be easily pressed apart. Very flat tubes are advantageous in the cooler construction, because they have a large surface in relation to their internal volume and thereby allow good heat dissipation. Characterized in that the cooler according to the invention can withstand relatively high pressures, this can be operated at a higher temperature than a conventional radiator. As a result, the temperature difference between the coolant and the outside temperature is greater, so that thereby a larger heat output and thus an increased efficiency of the radiator is possible.
  • the radiator can be made wider at the bottom than at the top, so that thereby the center of gravity of the radiator and thus also the center of gravity of a vehicle equipped with it can be lowered. This allows the vehicle to achieve better driving characteristics.
  • the improved efficiency compared to an aluminum cooler through better heat dissipation and the possibility of using very flat tubes with a favorable ratio between the inner volume and the outer surface of the Cooler designed smaller and the total required for cooling an engine coolant amount can be reduced.
  • the result is a weight saving, which is further increased by the fact that the carbon fiber composite itself is lighter than aluminum.
  • the air resistance of the radiator to an aluminum radiator can be significantly reduced.
  • the radiator according to the invention thus enables a fuel economy and / or a higher power when used in a motor vehicle.
  • the first box is formed by a first carrier plate connected to a first cover and the second case is formed by a second carrier plate connected to a second cover.
  • the tubes are preferably connected to the first carrier plate on a first side having a first tube opening and to the second carrier plate on a second side having a second tube opening.
  • This structure allows a particularly pressure-resistant connection of the tubes with the first and second box, because prior to connecting the first and the second support plate with the first and the second cover, the tubes from the side facing away from the tubes of the first and second carrier plate with the first and second carrier plate can be glued.
  • a base is provided which partially surrounds the tube.
  • This base increases the pressure stability of the pipes, especially if they are designed as flat pipes.
  • the first and / or the second box and / or the first and / or second carrier plate made of the carbon fiber composite material. As a result, the resistance to high temperatures and pressures can be further increased.
  • the tubes may have on the outer surfaces of the tubes with each of these surfaces bonded carbon fiber composite cooling fins.
  • the cooling fins also stabilize the tubes. The stabilization is particularly important if the tubes are designed as flat tubes.
  • the cooling fins and the tubes are manufactured in one operation with the tubes.
  • the carbon fibers forming the cooling ribs are partly applied to the outer surface of the tubes in the production of the tubes and the carbon fibers of the tubes and the cooling ribs are impregnated with binder, if carbon fibers which are not already pre-impregnated with a not yet cured binder are used.
  • the remainder of the carbon fiber forming fins is fixed, preferably at an approximately right angle, distantly from the tubes to cure the composite. Subsequently, the material is cured under the action of pressure and elevated temperature.
  • the cooling fins are glued to at least one of the tubes with at least one adjacent tube arranged in the cooler.
  • stabilization of the entire radiator can be achieved.
  • this can prevent the formation of flat-shaped tubes at a high internal pressure in the cooler.
  • the cooler can thereby be operated at even higher pressure and thus even higher temperature, whereby the efficiency of the cooler is further increased.
  • an adhesive or the binder is used which contains carbon particles. As a result, a good heat transfer between the adjacent tube arranged and the cooling fins can be ensured.
  • a particularly good heat dissipation from the interior of the radiator can be achieved, that the tubes have on the inner surfaces of the tubes with these surfaces respectively connected carbon fiber composite inner ribs. Heat transfer is particularly good when these inner ribs are made in one operation with the tubes and are laminated to the inner surfaces of the tubes.
  • the inner ribs can be arranged perpendicular to a flow direction or throughflow direction of the fluid predetermined by the shape of the tubes. This creates a turbulent flow in the fluid as it flows through the tubes. The turbulent flow improves the heat transfer from the fluid to the material of the radiator and increases the cooling capacity of the radiator further increased.
  • the inner ribs are arranged in an angle of 0 ° and 90 ° to a predetermined through the shape of the tubes possible flow direction of the fluid through the tubes deviating angle, ie obliquely to the flow direction, also creates a turbulent flow in the fluid when flowing through the tubes.
  • a lower resistance than at right angles to the flow direction arranged inner ribs results from the oblique arrangement for the fluid when flowing through the tubes, a lower resistance than at right angles to the flow direction arranged inner ribs.
  • Another advantage of the oblique arrangement is that a larger surface area of the inner ribs can be realized than with inner ribs arranged perpendicular to the flow direction. This also increases the cooling capacity of the radiator.
  • the tubes each have a non-circular cross section perpendicular to a flow direction.
  • the ratio between the outer surface and the inner space of the tubes can be increased, thereby improving the heat dissipation.
  • the tubes have an oblong cross section perpendicular to the throughflow direction, ie. H. are formed as flat tubes.
  • the function of the radiator can be further improved by the fact that the cross section of the flat tubes each has a curvature. This makes it possible to direct a flow of air flowing through the radiator in a desired direction. Furthermore, a heat transfer from the surface of the tubes to a stream of air flowing around the tubes can thereby be improved.
  • the use of the carbon fiber composite makes it possible to produce extremely flat tubes, which can greatly increase the efficiency of the cooler.
  • the tubes have in one direction along the tubes, in particular the throughflow direction, in each case perpendicular to the direction of successive cross sections whose respective areas increase. This makes it possible, on the one hand, to minimize the resistance that the radiator opposes to the fluid as it flows through. On the other hand, this allows the center of gravity of the fluid-filled cooler to be shifted significantly downwards. As a result, the driving characteristics of a vehicle equipped with this radiator can be improved.
  • the carbon fiber composite contains a resin, especially an epoxy resin, as a binder.
  • the surface of the carbon fiber composite on which exposed carbon fibers are present is preferably a surface on the cooling fins and / or an outer surface of the tubes.
  • the surface of the carbon fiber composite material on which exposed carbon fibers are present is a surface of the tubes located inside the tubes and / or a surface on the inner ribs. This also improves the heat transfer from the fluid to the carbon fibers. Thus, it can be present both on the cooling fins, the outer surfaces of the tubes, lying in the interior of the tubes surfaces and on the inner ribs exposed carbon fibers. The exposed carbon fibers further increase the efficiency of the cooler.
  • the inner ribs or the fins of the composite carbon fiber composite are cured after its curing so that the carbon fibers are exposed.
  • the removal can be chemically, z. B. by etching, or mechanically, for. B. by irradiation by means of particles or abrasion by means of a coarse-grained material.
  • the particles are preferably sand, corundum, dry ice or glass particles.
  • the content of carbon particles in the total weight of the cooler may be 1% by weight to 25% by weight, in particular 8% by weight to 21% by weight, preferably 15% by weight to 20% by weight.
  • the proportion of the carbon fibers and the carbon particles in the total weight of the cooler together is 40% by weight to 60% by weight, in particular 45% by weight to 55% by weight .-%, preferably 49 to 51 wt .-%.
  • the tubes may be connected to the first and / or the second box or to the first and / or the second carrier plate, in particular by means of epoxy resin, by gluing.
  • the first cover with the first support plate and / or the second cover with the second support plate by gluing, in particular by means of epoxy resin, connected.
  • the fluid may be a liquid coolant of an engine or charge air for a turbocharger.
  • the invention further relates to a method for producing a carbon fiber composite cooler according to the invention, wherein individual components of the cooler are produced by heating carbon fibers and a binding agent bypassing the carbon fibers in a respective mold under pressure and then cooling and dissolving the components of the respective mold and then joined together by gluing to the radiator.
  • carbon fibers are exposed on a surface of at least one of the components by stripping the binder of a portion of the surfaces of the carbon fibers and / or adding carbon particles to the binder. It is understood that the carbon fibers are exposed so that part of each exposed carbon fiber remains surrounded by the binder, otherwise the fiber would no longer be part of the carbon fiber composite.
  • the removal of the binder can chemically, in particular by etching, or mechanically, in particular by irradiation by means of particles, preferably from sand, corundum, dry ice or glass or by an abrasive treatment, in particular by shaking,
  • a coarse-grained material preferably quartz sand, chippings or glass granules done.
  • An abrasive treatment is understood in particular to mean a treatment in which the binder is removed by abrasion.
  • the method comprises the following steps: a) producing the first and the second cover, the first and second carrier plate and the tubes of the carbon fiber composite material,
  • Such a production method is to be carried out favorably, especially in the case of small-batch production, because no expensive machines are needed which are specially adapted to the shape of the cooler and, moreover, without costly conversion measures, it is possible to change the geometry of the cooler according to individual customer requirements.
  • cooling ribs also made of the carbon fiber composite material are produced, wherein the cooling ribs are connected to the outside of the tubes during production by lamination in each case.
  • the cooling fins on the outer side of the tubes can be glued to at least one adjacent tube in the radiator on its outer surface.
  • the bonding preferably takes place by means of an adhesive or the binder used in the production of the carbon fiber composite.
  • carbon particles are added to the adhesive or binder. This increases the thermal conductivity over the resulting splice. At the same time, a different thermal expansion of the glued together components of the cooler at the splice is thereby avoided and thus also the Increased durability of the bond.
  • a particularly suitable binder in the manufacture of the carbon fiber composite has been found to be an epoxy resin.
  • carbon fiber composite inner ribs may be produced together with at least a part of the tubes, and the inner ribs are bonded to the inside of the tubes at the time of manufacture by laminating, respectively.
  • Lamination is understood to mean that the carbon fibers or the carbon fiber fabric of the carbon fiber composite of the tubes and the inner fins or fins are partially arranged in parallel planes and sealed together using pressure and elevated temperature.
  • the inner ribs are thereby arranged at an angle to a predetermined through the shape of the tubes possible through-flow of the fluid through the tubes, which deviates from 0 ° and from 90 °, d. H. the inner ribs are arranged at an oblique angle to the flow direction.
  • Carbon fiber used to manufacture the inner ribs and the tube are arranged on a mandrel made of a low-melting metal alloy and then baked together using pressure and temperature. After curing of the carbon fiber composite, the mandrel can be removed by melting from inside the tube ("lost core").
  • an amount of the carbon particles is added to the binder so that the proportion of carbon particles in the total weight of the cooler 1 wt .-% to 25 wt .-%, in particular 8 wt .-% to 21 wt .-%, preferably 15 wt .-% to 20 wt .-%, is.
  • such amounts of binder, carbon fibers and carbon particles are used that the proportion of the carbon fibers and the carbon fibers Fabric particles in the total weight of the cooler together 40 wt .-% to 60 wt .-%, in particular 45 wt .-% to 55 wt .-%, preferably 49 to 51 wt .-%, is.
  • Such amounts of binder and carbon fibers can be used that the proportion of carbon fibers in the total weight of the cooler 15 wt .-% to 51 wt .-%, in particular 25 wt .-% to 45 wt .-%, preferably 30 wt. % to 35 wt .-%, is.
  • the efficiency of the cooler can be significantly increased if the surface on which the carbon fibers are exposed has a surface on the cooling fins and / or an outer surface of the tubes and / or a surface of the tubes lying inside the tube and / or Surface on the inner ribs is.
  • the exposure of the surfaces of the carbon fibers may be chemically, z. B. by etching, or mechanically, for. B. by irradiation by means of particles or by other methods for removing the binder done.
  • the irradiation can be carried out with a particle stream, in particular from sand, corundum, dry ice or glass particles.
  • the invention further relates to the use of a radiator according to the invention for cooling a liquid coolant of an engine or for cooling charge air for a turbocharger.
  • FIG. 1 shows a three-dimensional representation of a cooler according to the invention with various details
  • 2a and 2b is a three-dimensional representation of a first and second box of the radiator of FIG. 1, 3 shows a three-dimensional representation of a second carrier plate of the cooler according to FIG. 1, FIG.
  • FIG. 4 is a three-dimensional representation of a tube with cooling fins of the radiator of FIG. 1,
  • FIG. 5 is a sectional view through a cooler according to the invention in the region of the cooling fins
  • Fig. 6 is a sectional view of the cooler of FIG.
  • Fig. 7 is a sectional view of the cooler of FIG.
  • FIG. 1 shows a cooler 10 with a first box 12 and a second box 14, which are connected to one another by flat tubes 16.
  • the cooling fins 30 shown in the upper detail illustration are connected to the pipe 16 by lamination at the points indicated at 26, i. H. a part of the carbon fibers forming the cooling fins 30 is aligned parallel to the surface of the tube and with this through the binder of the carbon fiber
  • the cooling fins are each connected to the adjacent pipe 16 by gluing.
  • the lower detail shows one of the tubes 16 formed as flat tubes, wherein the Clarity because of the cooling fins 30 are not shown.
  • FIG. 2 a shows that the first box 12 is formed from a lid 20 and a first carrier plate 18.
  • FIG. 2b shows that the second box 14 is formed from a second carrier plate 22 and a lid 24 connected thereto.
  • the tubes 16 are in each case connected to the first 18 and the second support plate 22.
  • the second carrier plate 22 is shown in detail in FIG.
  • FIG. 4 shows a tube 16 with cooling fins 30 designed as a flat tube.
  • the cooling fins 30 are arranged on the two sides of the tube 16 offset relative to each other. As a result, the stability of the tube 16 is further increased.
  • tubes can be created in this way, the cooling fins can be glued in each case with an adjacent tube arranged in parallel to the same tube, because each room for a fin of the adjacent tube 16 is left by the staggered arrangement.
  • Fig. 4 also shows that the flat tube 16 has a curvature. The ability to create very flat and curved tubes can improve the aerodynamic properties and efficiency of the radiator.
  • Fig. 5 shows a sectional view of the radiator 10 in the region of the cooling fins parallel to the longitudinal axis of one of the tubes. It is clear that the cooling fins 30 may also have a curvature. In addition, it is shown that the first 18 and second support plate 22 each one Socket 23 have, in which the tube 16 is partially received. This further increases the pressure resistance of the radiator.
  • Fig. 6 shows a sectional view of the radiator 10 along the line C - C of FIG. 5.
  • Fig. 7 shows a sectional view of the radiator 10 along the line B - B of FIG. 6
  • the support plate 22 can be seen, which Sok - Kel 23 which surround the tubes 16.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un refroidisseur (10) pour refroidir un fluide, le refroidisseur (10) présentant une première caisse (12) avec un premier raccord pour l'apport de fluide et une deuxième caisse (14) avec un deuxième raccord pour dévier le fluide, la première caisse (12) étant connectée fluidiquement à la deuxième caisse (14) par des tubes (16) ; le refroidisseur est réalisé de telle sorte que le fluide du refroidisseur puisse s'écouler du premier raccord par le biais des tubes (16) jusqu'au deuxième raccord, les tubes (16) se composant d'un matériau composite renforcé par des fibres de carbone contenant des fibres de carbone et un liant, et la conductibilité thermique du matériau composite renforcé par des fibres de carbone étant accrue par le fait que l'on dispose sur une surface du matériau composite renforcé par des fibres de carbone des fibres de carbone exposées et/ou que le matériau composite renforcé par des fibres de carbone contient des particules de carbone.
PCT/EP2007/006854 2006-08-04 2007-08-02 Refroidisseur pour refroidir un fluide provenant d'un matériau composite renforcé par des fibres de carbone WO2008014998A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07801499A EP2047202A1 (fr) 2006-08-04 2007-08-02 Refroidisseur pour refroidir un fluide provenant d'un matériau composite renforcé par des fibres de carbone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200620012094 DE202006012094U1 (de) 2006-08-04 2006-08-04 Kühler zum Kühlen eines Fluids aus einem Kohlenstofffaser-Verbundstoff
DE202006012094.7 2006-08-04

Publications (1)

Publication Number Publication Date
WO2008014998A1 true WO2008014998A1 (fr) 2008-02-07

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EP (1) EP2047202A1 (fr)
DE (1) DE202006012094U1 (fr)
WO (1) WO2008014998A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102010054515A1 (de) * 2010-12-15 2012-07-12 Markus Schäfer Herstellung und Anwendung von Polyfertin
CN112847979A (zh) * 2020-12-22 2021-05-28 毫厘机电(苏州)有限公司 用于多种管径热管的装配成型设备及方法

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DE102008006153B3 (de) * 2008-01-26 2009-08-20 Pierburg Gmbh Luftansaugkanalsystem mit einem integrierten Ladeluftkühler
CN101644549B (zh) * 2009-07-28 2011-06-15 华南理工大学 一种微沟槽与纤维的复合多孔结构及其制造方法

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US2782806A (en) * 1954-02-17 1957-02-26 Union Carbide & Carbon Corp Reinforced pipe joint
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WO2001067019A1 (fr) * 2000-03-08 2001-09-13 Thermal Corp. Dissipateur de chaleur sous forme de matrice contenant des fibres allongees
US20060137587A1 (en) * 2004-11-08 2006-06-29 Integral Technologies, Inc. Low cost components for use in motorcycle, marine, and racing applications manufactured from conductive loaded resin-based materials

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JP3810875B2 (ja) * 1997-01-24 2006-08-16 カルソニックカンセイ株式会社 一体型熱交換器
WO2000031485A1 (fr) * 1998-11-25 2000-06-02 Alliedsignal Inc. Echangeur thermique contre-courant a collecteurs et passages integres

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US1931247A (en) * 1931-03-16 1933-10-17 Luther S Brown Heating device
US2782806A (en) * 1954-02-17 1957-02-26 Union Carbide & Carbon Corp Reinforced pipe joint
FR2264262A1 (en) * 1974-03-14 1975-10-10 Fonderie Soc Gen De Central heating radiator - has horizontal tubes shaped aerodynamically and sloping upwards
DE2720078A1 (de) * 1977-05-05 1978-11-16 Sigri Elektrographit Gmbh Verfahren zur vergroesserung der waermeaustauschenden flaeche von graphitelementen in einem waermeaustauscher
JPH10132492A (ja) * 1996-10-25 1998-05-22 Mitsubishi Heavy Ind Ltd 熱交換器用チューブ
WO2001067019A1 (fr) * 2000-03-08 2001-09-13 Thermal Corp. Dissipateur de chaleur sous forme de matrice contenant des fibres allongees
US20060137587A1 (en) * 2004-11-08 2006-06-29 Integral Technologies, Inc. Low cost components for use in motorcycle, marine, and racing applications manufactured from conductive loaded resin-based materials

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010054515A1 (de) * 2010-12-15 2012-07-12 Markus Schäfer Herstellung und Anwendung von Polyfertin
DE102010054515B4 (de) * 2010-12-15 2014-09-25 Markus Schäfer Herstellung und Anwendung von Polyfertin
CN112847979A (zh) * 2020-12-22 2021-05-28 毫厘机电(苏州)有限公司 用于多种管径热管的装配成型设备及方法
CN112847979B (zh) * 2020-12-22 2021-09-28 毫厘机电(苏州)有限公司 用于多种管径热管的装配成型设备及方法

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DE202006012094U1 (de) 2007-12-20
EP2047202A1 (fr) 2009-04-15

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