CN102802835A - Core box with air vents integrated in pins - Google Patents
Core box with air vents integrated in pins Download PDFInfo
- Publication number
- CN102802835A CN102802835A CN201080028020XA CN201080028020A CN102802835A CN 102802835 A CN102802835 A CN 102802835A CN 201080028020X A CN201080028020X A CN 201080028020XA CN 201080028020 A CN201080028020 A CN 201080028020A CN 102802835 A CN102802835 A CN 102802835A
- Authority
- CN
- China
- Prior art keywords
- pin
- core box
- wing portion
- heat exchanger
- pore
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
- B22C9/123—Gas-hardening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
- B22C7/065—Venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
-
- 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
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0081—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by a single plate-like element ; the conduits for one heat-exchange medium being integrated in one single plate-like element
-
- 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
- F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to sand casting and more specifically to sand casting of a heat exchanger element with pins and/or fins. The invention provides a core box for sand casting of workpieces comprising pins and/or fins. The core box molding surface comprises at least one air vent and pins and/or fins. The at least one air vent is integrated in at least one pin or fin.
Description
Technical field
The present invention relates to sand casting and all casting techniques of using core, relate more specifically to be used to produce the sand casting that has pin wing portion workpiece.
The invention still further relates to this workpiece that has pin wing portion that is closely spaced array, for example heat exchanger element.
Background technology
Heat exchange surface has pin wing portion usually.These pin wing portions provide the increase of heat exchange surface, and reason is that the more multilist face of heat exchanger is with cooling or add hot fluid and contact.
The further increase of heat exchange surface can be through using thinner and therefore also shorter pin acquisition, and this also allows to have on the identical surface areas and more sells post more, obtains bigger surperficial capacity thus, described in EP1722172.Yet the further increase of heat exchange surface receives pin or the restriction of wing portion space, and to attempt to increase surface area less than said interval be impossible or infeasible for being reduced to present manufacturing approach.
Summary of the invention
The limitation that the objective of the invention is to break away from sand casting process is to be used for further increasing heat exchange surface.Or rather, the object of the present invention is to provide a kind of improved sand casting method that can increase heat exchange surface.
Making core or mould, sand mixture is transported in the core box cavity by means of compressed air in order to be used for casting purpose subsequently.This core box has a lot of fixedly pin or the wing portions with particular heat exchanger geometry.Term " particular heat exchanger geometry " refer to pin or wing portion have with will be by means of the roughly the same geometry of pin or wing portion of the heat exchanger of core or the manufacturing of sand mo(u)ld tool.Although do not get rid of other geometry, pin or wing portion have diameter and are the cylindrical of 3.0mm to the maximum or have the conical butt that average diameter is 3.0mm to the maximum.Common way at the such core of moulding is in the position that can obtain intact core best pore to be set in the molded surface at core box.When the air blast of carrying sand when gas was received by core box, air must be discharged apace, and sand remains trapped in the core box cavity simultaneously.In current available pin and/or wing portion sand casting technology, pore is between three adjacent pins or between two adjacent pins and have the diameter of minimum 4mm.This means possibly increasing of heat exchange surface by those 4mm restrictions.
The present invention is in or is eliminated this restriction by integrated pore in pin and/or wing portion through providing.One aspect of the present invention provides a kind of workpiece core box that comprises pin and/or wing portion that is used for sand casting.The molded surface of said core box comprises at least one pore and pin and/or wing portion.Said at least one pore by integrated at least one pin or wing portion.The integrated permission pin of pore in pin and/or wing portion and/or the densified of wing portion array increase heat exchange surface thus.This bigger pore of needs carry out in the core box abundant exhaust, but the heat exchange surface of the heat exchanger that casts out of expectation is particularly useful when big.
US-A1-2003/0173049 discloses a kind of utilization and has made the method and apparatus that sand mold and sclerosis are adjacent to the adhesive in the sand mo(u)ld of discharging pin through the reverse purging air of core box.In a particular embodiment, discharging pin is the hollow tube as passage.
Get back to the present invention, pin used herein can have any suitable diameter.Preferably, pin has 3.0mm or littler diameter.This allows further to increase the heat exchange surface of using the heat exchanger element of producing according to core box of the present invention.
In aspect preferred, said at least one pore by integrated in the base portion of said pin or wing portion.Such pore covers the whole circumference of the base portion of pin or wing portion.Alternative preferred aspect in, one or more pores can only cover the part of circumference of the base portion of pin or wing portion.Thereby an above pore may reside on the base portion of pin or wing portion.
In aspect another is preferred, said at least one pore is by on the surface of integrated main body in said pin or wing portion.Such pore can cover the whole circumference of the main body of pin or wing portion.Alternative preferred aspect in, pore can only cover the part of circumference of the main body of pin or wing portion.Thereby, may reside in more than one pore on the main body of pin or wing portion.
In aspect another is preferred, said at least one pore by integrated in the top surface of said pin or wing portion.Under the situation that wing portion is being cast, may reside in the top of wing portion more than one pore.Another advantage of the preferred embodiment is that the main body of pin and/or wing portion is the part of the required wall of pore.
Pore is integrated into the feasible more dense array of pin and/or wing portion of can making now in pin and/or the wing portion.Be used for sand casting core box pin and/or wing portion this more dense array allow to increase heat exchange surface through the heat exchanger element that comprises pin and/or wing portion that uses such core box production.
The aspect of claim of the present invention provides a kind of sand casting heat exchanger element that comprises wall.The said cornice of said heat exchanger element has pin and/or the wing portion that increases heat exchange surface.Said pin and/or wing portion form array, and wherein said array comprises 250 pins of every square meter and/or the wing portion of being equal to or greater than.
For the heat exchanger weight that increases slightly, such heat exchanger has bigger heat exchange surface, and this allows the identical or better thermal inertia of system, and the reaction time also keeps identical or improves.
Another aspect of the present invention provides a kind of method that is used to produce the band pin and/or is with the heat exchanger element of wing portion.This method may further comprise the steps.The core box of band pin and/or band wing portion at first, is provided.This core box comprises at least one pore.This at least one pore is by in integrated at least one in said pin and/or wing portion.Then, the mixture of sand and adhesive is injected in the said core box.With the said sand of relief-binder combination sclerosis.In the ice chest process, the catalyst gas guiding that will be used to harden is through said pore., remove said core box, obtain core thus thereafter.Then this core is arranged in the molding box.Motlten metal is poured in the said molding box, obtained heat exchanger element thus around said core.Cool off the said heat exchanger element that casts out thereafter; Remove said core thereafter.
Another aspect of the present invention provides the purposes of core box according to the present invention in the production of the heat exchanger element of band pin and/or band wing portion.
In one aspect of the method, the invention provides the purposes of the heat exchanger element that limits like the present invention.
Another aspect provides a kind of heating boiler, and said heating boiler has according to heat exchanger element of the present invention.
Definition
Term ' core box ' is to be understood as each mould that in the sand casting of using pore, uses: for example core box, pattern, molding box or other mould.
The term spacing is appreciated that the distance at the center between two adjacent pins and/or the wing portion.
Description of drawings
Exemplary embodiment of the present invention is described with reference to the drawings hereinafter, wherein:
Fig. 1 has shown the vertical view of the core box of the band pin that is used for heat exchanger element.
Fig. 2 has shown along the cross section of the line II-II ' acquisition of Fig. 1.
Fig. 3 has shown the cross section according to the core box of the band pin with exemplary vesicular structure of the present invention.
Fig. 4 has shown the cross section according to the core box of the band pin with another exemplary vesicular structure of the present invention.
Fig. 5 has shown the cross section according to the core box of the band pin with another exemplary vesicular structure of the present invention.
Fig. 6 has shown according to example heat exchanger element of the present invention.
Fig. 7 has shown along the cross section of the line VII-VII ' acquisition of Fig. 6.
Fig. 8 has shown along the cross section of the line VIII-VIII ' acquisition of Fig. 6.
Fig. 9 has shown the alternative pin that has integrated pore.
The specific embodiment
Referring now to Fig. 1 to 8 describe that the core box, the pore that have pin or have a wing portion be used for sand casting are arranged, sand casting heat exchanger element and produce the example of the method for such heat exchanger element.
Well-known, passage will be located in the core box, will and will have in known manner by blowing at said core box SMIS and be used to the appropriate device that prevents that sand grains from leaving along with selecting air.
Fig. 1 has shown the vertical view of core box of the band pin of the prior art that is used to cast heat exchanger element.X representes two level intervals between the continuous pin.Y represent pin two row between vertical spacing.In this example, pin (1) has and in Fig. 1, is shown as two concentrically ringed taper shapes, the top of interior circle expression pin, and cylindrical is represented the base portion of pin.In the prior art, pore (2) is between the base portion of three adjacent pins.Fig. 2 has shown along the cross section of the line II-II ' acquisition of Fig. 1.
Fig. 3 has shown the cross section that has the band pin of sand casting exemplary vesicular structure, that be used for heat exchanger element or be with the core box of wing portion according to of the present invention.In first exemplary embodiment according to Fig. 3, the outlet of pore (3) covers the whole circumference of the main body of pin or wing portion.In the alternate exemplary embodiment according to Fig. 3, the outlet of pore (3) only covers the part of circumference of the main body of pin or wing portion.Alternatively, a plurality of parts of the circumference of the main body of a plurality of outlets (3) of pore covering pin or wing portion.
Fig. 4 has shown band pin with sand casting another alternate exemplary vesicular structure, that be used for heat exchanger element or the cross section of being with the core box of wing portion.In first exemplary embodiment according to Fig. 4, the outlet of pore covers the whole circumference of the base portion of pin.In the alternate exemplary embodiment according to Fig. 4, the outlet of pore (3) only covers the part of circumference of the base portion of pin.Thereby, be present in the base portion of pin or wing portion more than one pore.Alternatively, a plurality of parts of the circumference of the base portion of a plurality of outlets (3) of pore covering pin.
Fig. 9 has shown another exemplary embodiment of the pin that has incorporate pore.Fig. 9 A has shown the 3D figure of such pin, and wherein a plurality of pores are present in the axle collar of pin.It must be understood that such pin will be integrated in the molded surface of core box.Fig. 9 B has shown the cross section according to line B-B '.The axle collar that it must be understood that pin will be integrated in the forming wall of core box.
Fig. 5 has shown band pin with sand casting another alternate exemplary vesicular structure, that be used for heat exchanger element or the cross section of being with the core box of wing portion.In first exemplary embodiment according to Fig. 5, core box comprises pin, and pore is positioned at the top at the center of pin.Thereby only a pore is present in pin.In second exemplary embodiment according to Fig. 5, core box comprises wing portion, and pore is positioned at the top of wing portion.Thereby, be present in the top of wing portion more than one pore.
Exemplary embodiment provides the sand casting that comprises wall heat exchanger element.The said cornice of said heat exchanger element has pin and/or the wing portion that increases heat exchange surface.Said pin and/or wing portion form array, and wherein said array comprises 250 pins of every square meter and/or the wing portion of being equal to or greater than.In this example, the pin array is made up of the pin with 3mm diameter, and pore is positioned at the base portion of pin.This array has the level interval of 5mm and the vertical spacing of 4.66mm.This array provides 429 pins/m
2And 303m
2/ m
3Heat exchange surface.Such heat exchanger element has 30.3% density.For relatively, have diameter and be the pore of 4mm and use diameter to provide and have 316 pins/m as the sand-cast of the prior art of the vertical spacing Y of the pin of 3mm, level interval X that array has 5.75mm and 5.5mm
2Array and 223m is provided
2/ m
3Heat exchange surface.Such heat exchanger element has 22.4% density.
Another exemplary embodiment according to sand casting heat exchanger element of the present invention comprises that pin has the diameter of 5.7mm, level interval X is that 8.5mm and vertical spacing Y are the pin array of 7.25mm, and wherein pore is positioned at the top of pin.This provides has 162 pins/m
2Array and 415m
2/ m
3Heat exchange surface and 41.5% density.
The density of pin and/or pin array is to expect to be used for the indication of the pressure drop of this pin and/or pin array.Can find out that from the above example of 3mm pin density receives the densified influence of pin structure to a great extent.
A kind of method that is used to produce the heat exchanger element of such band pin and/or band wing portion may further comprise the steps.The core box of band pin and/or band wing portion at first, is provided.This core box comprises at least one pore.This at least one pore is by in integrated at least one in said pin and/or wing portion.Then, the mixture of sand and adhesive is injected in the said core box.With the said sand of relief-binder combination sclerosis.In cold box process, the catalyst gas guiding that will be used to harden is through said pore., remove said core box, obtain core thus thereafter.Then this core is placed molding box.Motlten metal is poured in the said molding box, obtained heat exchanger element thus around said core.Thereafter the heat exchanger element that cooling is cast out; Remove said core thereafter.
Fig. 6 to 8 has shown and has comprised the sand casting heat exchanger element (5) of the wall of aluminum (6) basically that said wall (6) seals at least one year of aquaporin (7) and has at least one flue (10).At least one wall (6) forms the border of carrying between aquaporin (7) and the flue (10).At least one cornice has pin and/or the wing portion (8,9) that increases heat exchange surface and in flue (10), extend.Pin and/or wing portion form array, and wherein this array comprises 250 pins of every square meter and/or the wing portion of being equal to or greater than.In the first exemplary sand casting heat exchanger element, the pore in the core box is the part of pin, as shown in Figure 3.In the sand casting heat exchanger element of alternate exemplary, the pore in the core box is the part of pin, as shown in Figure 4.In the sand casting heat exchanger element of another alternate exemplary, the pore in the core box is the part of pin, as shown in Figure 5.
The illustrative example of pin of the present invention has taper shape, but in another embodiment, can have another kind of shape, for example complete cylindrical or scrobicula.Those skilled in the art obviously can use the heat exchange of Any shape to increase structure.
Therefore band pin that is used for sand casting or the core box of being with wing portion, pore layout, the heat exchanger element of sand casting and the method for producing such heat exchanger element have been described.The invention still further relates to the heat exchanger element with high density pin and/or wing portion array, said array has 250 pins of every square meter and/or the wing portion of being equal to or greater than.The present invention also provides the method that obtains so dense pin and/or wing portion array through the pore in the modification sand casting core box.Therefore the present invention provides the solution of the heat exchange surface that is used for further increasing the heat exchanger element of being with pin and/or band wing portion.
Claims (10)
1. core box that is used for sand casting; Said core box comprises at least one pore and has the particular heat exchanger geometry and be fixed to the pin and/or the wing portion of said core box; It is characterized in that said at least one pore is by in integrated at least one in said pin and/or wing portion.
2. the core box that is used for sand casting according to claim 1 is characterized in that, said at least one pore is positioned on the base portion of said pin and/or wing portion.
3. the core box that is used for sand casting according to claim 1 is characterized in that, said at least one pore is positioned on the body surfaces of said pin and/or wing portion.
4. according to each the described core box that is used for sand casting in the aforementioned claim, it is characterized in that the diameter of said pin and/or wing portion is equal to or less than 3mm.
5. according to each the described core box that is used for sand casting in the claim 1 to 4, it is characterized in that said core box comprises 250 pins of every square meter and/or the wing portion of being equal to or greater than.
6. one kind is used to the manufacturing approach that has pin and/or have the heat exchanger element of wing portion, and said manufacturing approach comprises:
Core box is provided; Said core box comprises pin and/or the wing portion that has the particular heat exchanger geometry and be fixed to said core box; Said core box also comprises at least one pore, and wherein said at least one pore is by in integrated at least one in said pin and/or wing portion;
The mixture of sand and adhesive is injected in the said core box, made said sand-binder combination sclerosis subsequently;
Remove said core box, obtain core thus;
Said core is arranged in the molding box;
Motlten metal is poured in the said molding box, obtained the heat exchanger element around said core thus;
The heat exchanger element that cooling is cast out;
Remove said core.
7. the heat exchanger element of the sand casting that obtains of a manufacturing approach according to claim 6, it comprises having and is used to increase the pin of heat exchange surface and/or the wall of wing portion.
8. having pin and/or having the application in the manufacturing of heat exchanger element of wing portion according to each described core box in the claim 1 to 5.
9. the application of heat exchanger element according to claim 7 in heating boiler.
10. heating boiler, it is provided with heat exchanger element according to claim 7.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09163465 | 2009-06-23 | ||
| EP09163465.9 | 2009-06-23 | ||
| PCT/EP2010/058509 WO2010149556A1 (en) | 2009-06-23 | 2010-06-17 | Core box with air vents integrated in pins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102802835A true CN102802835A (en) | 2012-11-28 |
Family
ID=42173552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080028020XA Pending CN102802835A (en) | 2009-06-23 | 2010-06-17 | Core box with air vents integrated in pins |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20120090563A1 (en) |
| EP (1) | EP2445662A1 (en) |
| CN (1) | CN102802835A (en) |
| WO (1) | WO2010149556A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101746669B1 (en) | 2015-11-03 | 2017-06-14 | 인하대학교 산학협력단 | Pin-fin and cooling apparatus having the same |
| EP3173721B1 (en) * | 2015-11-25 | 2018-04-25 | Daikin Industries, Ltd. | Heat exchanger |
| EP3173723B1 (en) * | 2015-11-25 | 2018-04-25 | Daikin Industries, Limited | Heat exchanger |
| JP6897538B2 (en) * | 2017-12-14 | 2021-06-30 | トヨタ自動車株式会社 | Core molding method and molding equipment |
| US11391523B2 (en) * | 2018-03-23 | 2022-07-19 | Raytheon Technologies Corporation | Asymmetric application of cooling features for a cast plate heat exchanger |
| US20210063099A1 (en) | 2019-08-28 | 2021-03-04 | Carbice Corporation | Flexible and conformable polymer-based heat sinks and methods of making and using thereof |
| USD903610S1 (en) * | 2019-08-28 | 2020-12-01 | Carbice Corporation | Flexible heat sink |
| USD906269S1 (en) * | 2019-08-28 | 2020-12-29 | Carbice Corporation | Flexible heat sink |
| USD904322S1 (en) * | 2019-08-28 | 2020-12-08 | Carbice Corporation | Flexible heat sink |
| CN114850399A (en) * | 2022-03-23 | 2022-08-05 | 中国第一汽车股份有限公司 | Engine cylinder cover air flue core following core drawing rod and exhaust process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2269254Y (en) * | 1995-09-15 | 1997-12-03 | 太原科教综合服务中心 | Jet core box for radiator sand core |
| JP3235714B2 (en) * | 1996-04-19 | 2001-12-04 | 新東工業株式会社 | Core sand filling method |
| EP0889292B1 (en) * | 1997-07-02 | 2001-12-19 | Remeha Fabrieken B.V. | Heat exchanger and central heating boiler comprising such heat exchanger |
| US20030173049A1 (en) * | 2002-03-18 | 2003-09-18 | Herreid Richard M. | Method and apparatus for making a sand core with an improved hardening rate |
| CN101323009A (en) * | 2008-07-11 | 2008-12-17 | 苏州明志科技有限公司 | Cold box foundry mold |
| US7784434B2 (en) * | 2006-11-09 | 2010-08-31 | Remeha B.V. | Heat exchange element and heating system provided with such heat exchange element |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2620515C3 (en) * | 1975-05-16 | 1982-12-16 | Remeha Fabrieken B.V., Apeldoorn | Cast metal heat exchangers, in particular central heating boilers |
| US4417615A (en) * | 1980-12-22 | 1983-11-29 | Air Preheater Company, Inc. | Cast iron recuperator |
| GB9212674D0 (en) * | 1992-06-15 | 1992-07-29 | Rank Brimar Ltd | Multipin structures |
| US6694731B2 (en) * | 1997-07-15 | 2004-02-24 | Deka Products Limited Partnership | Stirling engine thermal system improvements |
| US5894649A (en) * | 1997-08-28 | 1999-04-20 | Transpro, Inc. | Heat exchanger assembly utilizing grommets and integral cast tanks |
| US8137607B2 (en) * | 2006-11-07 | 2012-03-20 | Ford Motor Company | Process for making reusable tooling |
-
2010
- 2010-06-17 EP EP10725692A patent/EP2445662A1/en not_active Withdrawn
- 2010-06-17 WO PCT/EP2010/058509 patent/WO2010149556A1/en active Application Filing
- 2010-06-17 US US13/378,814 patent/US20120090563A1/en not_active Abandoned
- 2010-06-17 CN CN201080028020XA patent/CN102802835A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2269254Y (en) * | 1995-09-15 | 1997-12-03 | 太原科教综合服务中心 | Jet core box for radiator sand core |
| JP3235714B2 (en) * | 1996-04-19 | 2001-12-04 | 新東工業株式会社 | Core sand filling method |
| EP0889292B1 (en) * | 1997-07-02 | 2001-12-19 | Remeha Fabrieken B.V. | Heat exchanger and central heating boiler comprising such heat exchanger |
| US20030173049A1 (en) * | 2002-03-18 | 2003-09-18 | Herreid Richard M. | Method and apparatus for making a sand core with an improved hardening rate |
| US7784434B2 (en) * | 2006-11-09 | 2010-08-31 | Remeha B.V. | Heat exchange element and heating system provided with such heat exchange element |
| CN101323009A (en) * | 2008-07-11 | 2008-12-17 | 苏州明志科技有限公司 | Cold box foundry mold |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120090563A1 (en) | 2012-04-19 |
| WO2010149556A1 (en) | 2010-12-29 |
| EP2445662A1 (en) | 2012-05-02 |
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Application publication date: 20121128 |