• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a heat exchanger (1) comprising a coolant housing (10) and a header plate (20). The header plate (20) crimps around a border (11) of the coolant housing (10) by encompassing the border (11). The header plate (20) is provided with apertures (22), each aperture (22) receiving a tube (30) for guiding coolant from or to the closed cavity (50). The heat exchanger (1) further comprises a reinforcing plate (40) extending between two opposing crimped locations on the border (11) of the coolant housing (10), and extending on the outside of the header plate (20) in view of the closed cavity (50), wherein the reinforcing plate (40) is joined, at the opposing locations, to an outer surface portion of the header plate (20), and wherein the reinforcing plate (40) is provided with at least one aperture (42) embracing one or more of the tubes (30) received by the header plate (20).Elected for publication: Figure 3
    公开号:SE1550865A1
    申请号:SE1550865
    申请日:2015-06-23
    公开日:2015-12-28
    发明作者:Ulf Bergman；Arnaud Contet；Bengt-Ove Birgersson
    申请人:Titanx Engine Cooling Holding Ab；
    IPC主号:
    专利说明:

    HEAT EXCHANGER WITH REINFORCED HEADER PLATE Technical field The present invention relates to a heat exchanger and in particular to aheat exchanger of the type comprising a coolant housing, a header plate anda plurality of tubes for transporting coolant from and to the coolant housing.The invention concerns a reinforcement of the heat exchanger in order towithstand high pressures in the coolant housing.
    Technical backgroundHeat exchangers are used in various applications, such as air conditioners, air compressors, gas turbines, refrigerators, and automotiveapplications. Heat exchangers for automotive use may be a radiator or acharge air cooler.
    Automotive and other heat exchangers may be constructed with a pairof coolant housings which are linked by a core leading a coolant between thecoolant housings. The core is typically formed by a plurality of tubes whichare located adjacent each other. The tubes may be joined to a header platewhich in turn is attached to the coolant housing. The different parts aretypically brazed or welded together.
    The above exemplified heat exchanger construction can be used forcooling internal combustion engines wherein an engine coolant is circulatedthrough the engine block and thereafter through the heat exchanger where ittransfers heat to the through-passing air. The heat exchanger is typicallylocated at an air intake in the front of the vehicle in order to maximize the airflow through the heat exchanger.
    The heat exchanger construction may also be provided for cooling airwithin an engine system between for example a turbocharger and an engineintake.
    The coolant pressure may be controlled. By increasing the coolantpressure, vaporization of the coolant can be avoided and the cooling systemmay thus increase its cooling efficiency. However, an increased coolantpressure puts higher pressure on the mechanical parts of the system, forexample on the heat exchanger. ln particular, joints between the tubes, theheader plate and the coolant housing are exposed to recurrent stress as the coolant pressure repeatedly increases and decreases. ln the long run thismay cause fatigue and breakdown of the cooling system. One typical areasensitive to fatigue is the joints interconnecting the header plate with thecoolant housing since the fluctuating coolant pressure causes the relativelyweak coolant housing to repeatedly change dimensions, which changes mustbe accommodated by the header plate.
    One solution to this problem is to reinforce the header plate to make itmore rigid. JP9126681 provides an example of a reinforcing clip which isprovided on the header plate in a position between the tubes. The free endsof the clips are bent to follow the shape of the header body and clamp againstthe same. The reinforcing clip is retained by engaging units provided on theheader plate. The parts may be brazed to each other. The solution requiresmodification of the header plate. Further it requires a complex assemblyprocess since multiple reinforcing clips must be oriented and mounted inspaces having a limited access Thus, there still exists a need for improvement with regards toreinforcement of the components in these types of heat exchangers.
    Summary of the invention lt is an object of the invention to provide an improved heat exchangerdesign, in particular with respect to reinforcement of the header plate. lt is a further object of the invention to provide a heat exchanger whichfacilitates the production process and which can contribute to cost-efficiency.
    The above and other objects are achieved by a heat exchangeraccording to claim 1.
    When pressurized coolant flows through the closed cavity, the walls ofthe coolant housing tend to bend outward due to the pressure. ln particular,the side walls tend to bulge. The inventors have identified portions in the jointbetween the coolant housing and the header plate which are particularlyexposed to fatigue due to such bulging. ln order to strengthen theconstruction, a reinforcing plate is provided. The reinforcing plate is joined tothe header plate along the end portion thereof which encompasses the cornerbetween the free edge portion and the outer side surface portion of the borderof the coolant housing. Thereby the above mentioned weak portions arestrengthened and reinforced so as to increase their resistance to fatigue. The reinforcing plate limits the displacement of the coolant housing in view of theheader plate when the heat exchanger is pressurized.
    Regardless of the design of the reinforcing plate, the header plate maybe designed and manufactured in a standardized manner without care takento the reinforcement needed for a particular application. Further, the assemblyof the reinforcing plate may be made with only minor effects to the assemblyline.
    The reinforcing plate may be made of the same material as the rest ofthe components of the heat exchanger, i.e. typically an aluminum alloy. Thismeans that a brazed homogenous joint may be formed along all contactsurfaces between the reinforcing plate and the header plate in the very samebrazing process that is normally used when joining all components of a heatexchanger. Thus, no extra joining step is required whereby the reinforcingplate easily may be integrated in the assembly line.
    Further features and advantages are achieved by embodimentsdisclosed in the dependent claims. ln one embodiment, the reinforcing plate is joined to one or more tubesembraced by the apertures of the reinforcing plate. This strengthens theoverall torsional rigidity of the heat exchanger and further decreases the riskof fatigue related breakdowns. ln another embodiment, the reinforcing plate may be arranged toprovide a gap between the reinforcing plate and each of one or more tubeswhich are embraced by the apertures of the reinforcing plate. This featuremay be preferred in order to provide an easy assembling of the components.Also, by a gap tolerances are made of less importance facilitating bothproduction of the reinforcing plate and assembling thereof.
    Regardless of if the reinforcing plate is joined to the tubes or provides agap between the reinforcing plate and the tubes, the apertures of thereinforcing plate may embrace only one tube or embrace a plurality of tubes. ln one embodiment, the opening defined by the border of the coolanthousing is oblong. ln this case, the reinforcing plate is arranged to extendbetween two opposing locations on a long side of the border of the coolanthousing. lt has been found that reinforcement of the header plate along thelong side of the border of the coolant housing provides a strong overallreinforcement of the heat exchanger and also provides an improved torsional rigidity. This is particularly the case when the reinforcing plate is located alonga central area of the long side.ln one embodiment, the tubes are arranged in a plurality of parallel rows. Each row comprises a plurality of tubes. The rows may extend in thedirection of the long side of the border. ln such embodiment, the reinforcingplate may be arranged to embrace at least two adjacent tubes in each row.By this configuration, the reinforcing plate may extend along as many tubesalong the long side as desirable.
    Brief description of the drawinqs The invention will be described in detail with reference to the schematicdrawings.
    Figure 1 is a three-dimensional view of a typical heat exchanger in linewith the present invention.
    Figure 2 is a view of a coolant housing and a part of the core of a heatexchanger according to a first embodiment.
    Figure 3 is an exploded view of the arrangement in Figure 2.
    Figure 4a is a side view towards the open section of the arrangementin Figure 2.
    Figure 4b is a cross-sectional view of a section taken along line A-A inFigure 4a.
    Figure 5a is side view towards a short side of the arrangement inFigure 2.
    Figure 5b is a cross-sectional view of a section taken along line B-B inFigure 5a.
    Figure 6 is a view of a coolant housing and a part of the core of a heatexchanger according to a second embodiment.
    Figure 7 is an exploded view of the arrangement in Figure 6.
    Detailed descriptionA heat exchanger 1 for heat exchange between a coolant and air is illustrated in Figure 1. For illustrative purposes the heat exchanger isimplemented with the reinforcing plate of the invention. The heat exchanger 1may be a radiator or a charge air cooler for use in engine cooling systems. Acoolant is circulated in a closed system formed by two opposing coolanthousings 10 and a plurality of tubes 30 extending between the housings. The disclosed embodiment is provided with a plurality of vertically arranged tubes30. lt is however to be understood that the tubes with remained function maybe horizontally arranged. The tubes are arranged side by side in at least onerow. A number of parallel rows, each row comprising a plurality of tubes, maybe provided.
    A header plate 20 is attached to each coolant housing 10 to form aclosed cavity. The tubes 30 connect to the closed cavity through apertures inthe header plate.
    During operation air is allowed to pass by the tubes 30. The tubes 30are designed to provide a large area relative its volume in order to optimizethe heat exchange. To further improve the heat exchanging area, waffled thinmetal sheets 70, may be arranged between the individual tubes 30.Turbulator elements may also be provided.
    The tubes 30 and the header plates 20 are preferably made of metalsuch as aluminum. lt is however to be understood that also other types ofmaterials may be used. ln case of aluminium, the aluminum is preferably ofthe type provided with a surface treatment facilitating brazing.
    The coolant housings are typically made of plastics, composite ormetal.
    The typical process of manufacturing a brazed heat exchanger of theabove type may be briefly explained as follows: A plurality of tubes arestacked with or without intermediate distance forming waffled thin metalmaterial. The stacked plurality of tubes is kept together by arranging twoopposing header plates on top of the free ends of the plurality of tubes. Thetubes are arranged to extend with their free ends through apertures in theopposing header plates. The resulting stacked arrangement is thoroughlydegreased and provided with a fluxing agent in order of dissolving inevitablenatural surface oxides of the aluminum. The stacked arrangement issubsequently fed through an oven where all connecting surfaces in thestacked arrangement are brazed together to form a rigid unit withhomogenous, brazed joints along all contact surfaces. Finally a coolanthousing is arranged on top of each header plate and joined thereto. Thecoolant housings are typically clamped in place by flanges on the headerplate, which flanges clamp the peripheral border of the coolant housing. Agasket is arranged between the coolant housing and the header plate before joining the same. The resulting clamped joint will be made fluid tight by thereactive forces of the thus compressed gasket. Thereby a closed, fluid tightsystem is provided allowing a closed circulation of a fluid from the first coolanthousing, via the plurality of tubes towards the second coolant housing.
    A first embodiment of a part of an oblong arrangement 2 forming thefluid side of the heat exchanger 1 is illustrated in Figure 2. The illustrated partforms an end of the oblong arrangement 2. The part is illustrated as a cut-offto facilitate understanding of the design. The cross section is representativeof any part of the arrangement 2 along either one of the coolant housings 10in Figure 1.
    The arrangement 2 comprises the coolant housing 10, the header plate20 and the plurality of tubes 30. lt is appreciated that these components maytake many forms within the scope of the appended claims.
    The coolant housing 10 and the header plate 20 form a closed cavity50 by that the header plate 20 covers an opening of the coolant housing 10.The tubes 30 are in communication with the closed cavity 50 by that their freeopen ends are arranged to extend into the closed cavity 50 through theheader plate 20.
    The invention is defined by a reinforcing plate 40. The reinforcing plate40 is arranged along and at least partly in contact with an outside surface ofthe header plate 20. By outside surface is meant a surface facing away fromthe closed cavity 50.
    The structural details of the different components in this embodimentand their attachment to each other will now be disclosed with reference toFigures 3 and 4a-4b.
    Starting with the coolant housing 10, the coolant housing 10 comprisesa top wall 16 and side walls 17 extending from the top wall 16. The top wall16 and the side walls 17 define a bowl-shaped inner cavity of the coolanthousing 10. The end of the side walls 17 forms a peripheral border whichdefines an opening in the coolant housing 10. The border 11 is in thisembodiment a peripheral rim which extends in an outward direction from theclosed cavity 50 along the perimeter of the coolant housing 10. lt goes withoutsaying that the border 11 may have a number of different designs within thescope of the invention.
    The coolant housing 10 is further provided with a coolant inlet or outlet18. The inlet/outlet 18 is arranged to be connected to a non-disclosed coolantcirculating system.
    The opening of the coolant housing 10 is covered by the header plate20 for separating the closed cavity 50 of the coolant housing 10. The headerplate 20 is also provided for connecting the tubes 30 such that the tubes 30are in communication with the closed cavity 50. To this end, the header plate20 is provided with apertures 22. Each aperture 22 receives a free open endof a tube 30. lt is important that the attachment between the header plate 20 and thecoolant housing 10 is tight in order to prevent leakage. To this end, theheader plate 20 is arranged to crimp the border 11 of the coolant housing 10.The crimping is achieved by that an end portion 23, extending from a mainportion 21, of the header plate 20 encompasses an inner side surface portion12, a free edge portion 13, an outer side surface portion 14 and an outerupper surface portion 15 of the border 11 at opposing locations on the border11. More precisely, the header plate 20 crimps the border 11 along the twoopposing long sides and along the two opposing short sides. Thus, in thisembodiment, the header plate 20 is arranged to crimp around the border onat least two opposing locations.
    By inner side surface portion 12 of the coolant housing 10 within thescope of the invention is meant a surface portion of the border 11 constitutingan elongation of the inner envelope surface of the coolant housing 10. Theinner envelope surface of the coolant housing 10 faces the closed cavity 50.
    By outer side surface portion14 of the coolant housing 10 within thescope of the invention is meant a surface portion of the border constituting anelongation of the outer envelope side surface of the coolant housing 10. Theouter envelope surface of the coolant housing 10 faces away from the closedcavity 50.
    By free edge portion 13 of the coolant housing 10 within the scope ofthe invention is meant a surface portion of the border located between theinner and outer envelope surfaces of the coolant housing 10.
    By outer upper surface portion 15 of the border within the scope of theinvention is meant a surface portion of the border facing away from theheader plate 20.
    By encompassing is meant that the end portion 23 of the header plate20 follows the surface portions of the coolant housing 10, however it is notnecessary that the end portion 23 of the header plate 20 abuts the surfacealong the whole surface portion of the coolant housing 10. Thus, the contactbetween the end portion 23 of the header plate 20 and the outer side surfaceportion 14 of the coolant housing 10 may be continuous or discontinuousalong the circumference of the coolant housing 10 as long as a fluid tightsealing is achieved. An intermediate flexible sealing may be arranged wherenecessary. ln the disclosed embodiment, the end portion 23 of the header plate 20abuts two opposing surface portions of the border 11, being the inner sidesurface portion 12, the outer side surface portion 14 and the outer uppersurface portion 15, so as to achieve the crimping effect. lt is appreciated thatthe crimping effect may be achieved by different configurations of the headerplate 20 and its end portion 23. For example, the header plate 20 mayencompass only the free edge portion 13 and the outer side surface portion14 at each opposing location to press the opposing locations of the border 11toward each other. ln other words, the header plate 20 may have a clip-likeform and function. Other configurations are also obvious to the skilled person.
    The header plate 20 comprises end flaps 24 which encompass theouter upper surface portion 15 of the border 11. This feature strengthens thecrimping and thus further increases the tightening of the joint between theheader plate 20 and the coolant housing 10. By a non-disclosed gasket beingarranged between the header plate 20 and the border 11 such gasket will becompressed by the crimping and the reaction force resulting from thecompressed gasket will ensure a fluid tight joint and prevent any significantmovements.
    During operation, when pressurized coolant flows through the closedcavity 50, the coolant housing 10 tends to bend outward due to the pressure.ln particular, the side walls 17 tend to bulge. The bending is typically cyclic,meaning that over time there is a risk of fatigue. The inventors have identifiedtwo weak portions on the header plate 20 which are particularly exposed tofatigue stress at high coolant pressures. The first portion is the corner C1between the main portion 21 and the first part of the end portion 23 whichencompasses the inner side surface portion 12 of the coolant housing 10 andthereby the inner envelope surface portion of the coolant housing 10. The second portion is the corner C2 in the end portion 23 which encompasses thecorner between the free edge portion 13 of the coolant housing 10 and theouter side surface portion 14 of the coolant housing 10, i.e. the innerenvelope surface portion of the coolant housing 10. Moreover, it has beenrea|ized that the part of the end portion 23 which runs along the outer sidesurface portion 14 of the coolant housing 10, i.e. the outer envelope surfaceportion tends to bend outward due to the border 11 being pressed in anoutward direction. Even if the end portion 23 does not break, it will beexposed to wear over time with the consequence that the crimping |oosensthus un-tightening the joint between the coolant housing 10 and the headerplate 20. There is also a risk that the cyclic stress causes fatigue in thebrazed joints between the header plate 20 and the tubes 30. ln order to strengthen the design, the invention provides a reinforcingplate 40. The reinforcing plate 40 comprises a main portion 41 forming abottom and at least two opposing end portions 43.
    The reinforcing plate 40 is formed by stamped sheet metal and ispreferably made of the same material as the header plate 20 and the tubes30 to facilitate joining there between.
    The reinforcing plate 40 is arranged on an outside surface of theheader plate 20, and extends between two opposing crimped locations on theborder 11 of the coolant hosing 10.
    The reinforcing plate 40 is in contact with and joined to the headerplate 20 at least at two positions: one at each crimped location on the border11. More precisely, the reinforcing plate 40 is arranged in contact with andjoined to each of the end portions 23 of the header plate 12. The joint isarranged along at least the part of the end portion 23 which encompasses thecorner C2 between the free edge portion 13 of the coolant housing 10 and theouter side surface portion 14 of the border 11 _ By that the reinforcing plate 40 is joined to this particular part of theheader plate 20, the above mentioned weak corners C1 and C2 arestrengthened and reinforced so as to increase their resistance to fatigue dueto high cyclic pressures in the coolant housing 10. The reinforcing plate 40limits the displacement of the header plate 20 and of the coolant housing 10when the latter is pressurized. The limited displacement reduces stresses onthe coolant housing 10, the header plate 20 and the tubes 30 and also on alljoints between these components.
    The end portions 43 of the reinforcing plate 40 are curved so as tofollow the curvature of the end portions 23 of the header plate 20. Thereinforcing plate 40 may be joined to the header plate 20 along other portionsas well. ln the disclosed embodiment, there is by way of example a jointbetween the header plate 20 and the reinforcing plate 40 along the mainportion 41 of the reinforcing plate 40 and the header plate 20.
    The height H of the opposing end portions 43 of the reinforcing plate40 may vary. As a minimum the reinforcing plate 40 should extend around thecorner C2 of the header plate 20 and at least along a portion of the endportion 23 of the header plate 20. lt must however not necessarily have thesame height and extension as the end portion 23 of the header plate 20.
    The reinforcing plate 40 comprises apertures 42. ln the disclosedembodiment, each aperture 42 embraces a single tube 30. By the termembrace is within the scope of the invention meant that the tube 30 is locatedin the aperture 42, however the tube 30 need not abut the reinforcing plate 40as will be illustrated further on. ln this embodiment, however, the reinforcingplate 40 is arranged in contact with and joined to each of the tubes 30. Thisfeature strengthens the torsional rigidity of the heat exchanger as such andmay further add to the reinforcement of the relevant corners C1 and C2. ln the disclosed embodiment, the apertures 42 have peripheral rims42a which give an extra support and contact surface to the tubes 30. Theheader plate 20 comprises similar peripheral rims 22a.
    The joint in the contact surfaces between the header plate 20 and thereinforcing plate 40 are preferably brazed, homogenous joints, which jointsare formed in the very same process step as is previously disclosed for beingused when brazing the stacked components making up the heat exchanger inFigure 1.
    A tvvo-dimensional view toward a short side end of the arrangement 2in Figure 2 is illustrated in Figure 5a. A section taken along the line B-B isillustrated in figure 5b.
    The reinforcing plate 40 extends between two opposing locations,being crimped by the header plate 20, on the long side of the border 11 of thecoolant housing 10. This positioning of the reinforcing plate 40 may beadvantageous when the opening of the coolant housing 10 has an oblongextension with a length considerably exceeding the thickness of the heatexchanger. lt has been found that reinforcement of the header plate 20 along 11 the long side of the border 11 of the coolant housing 10, in particular along acentral area of the long side, provides a strong reinforcement of the heatexchanger. By central area is meant that the reinforcing plate 40 embracestubes 30 which are not located at the end of the long side, i.e. adjacent theshort side of the order 11.
    The reinforcing plate 40 could in other embodiments (not disclosed)also extend between two opposing locations on the short sides of the border11 of the coolant housing 10.
    A second embodiment of a part of the arrangement 3 forming the fluidside of the heat exchanger 1 is illustrated in Figures 6 and 7. The componentswhich are similar to the ones illustrated in the first embodiment are providedwith the same reference numerals.
    The arrangement 3 comprises a reinforcing plate 60 which has aslightly different configuration than the first embodiment of the reinforcingplate 40. The reinforcing plate 60 comprises a main portion 61 forming abottom and two opposing end portions 63 which extend from the main portion61.
    The reinforcing plate 60 is joined to the header plate in similar manneras in the first embodiment. ln other words, the reinforcing plate 60 is joined toeach of the end portions 23 of the header plate 20. The joint is arrangedalong at least the part of the end portion 23 which encompasses the cornerC2 between the free edge portion 13 and the outer side surface portion 14 ofthe border 11. Similar to the first embodiment, the end portions 63 are curvedso as to follow the curvature of the end portions 23 of the header plate 20.
    The reinforcing plate 60 is provided with apertures 62. Contrary to thefirst embodiment, each aperture 62 encompasses a pair of adjacent tubes 30.ln this embodiment, the tubes 30 are located in a plurality of rows being tworows in the illustrated case. The rows are located in parallel. Each rowcomprises a plurality of tubes 30. The illustrated part of the arrangement 3shows three tubes 3 in each row. Each row extends in the direction of thelong side of the border 11 which provides an oblong opening of the coolanthousing 10.
    The reinforcing plate 60 embraces adjacent tubes 30 in adjacent rows.Moreover, the single reinforcing plate 60 is provided with a plurality ofapertures 62 which together embrace a plurality of tubes 30 along the rows. 12 The reinforcing plate 60 differs from the reinforcing plate 40 of the firstembodiment also in that it is not joined to the tubes 30. On the contrary, thereinforcing plate 60 is arranged to provide a gap between the reinforcing plate60 and each of the tubes 30 embraced by the apertures 62. This feature maybe preferred in order to facilitate assembling of the components. Further, thetolerances of the apertures 62 of the reinforcing plate 60 may be given areduced importance.
    The two above disclosed embodiments exemplifies the great variety ofdesigns of the reinforcing plate 40 and 60 that is feasible within the scope ofthe invention. Regardless of the design of the reinforcing plate 40, 60, theheader plate 20 may be designed and manufactured in a standardizedmanner without care taken to the type of reinforcing plate 40, 60 to be used.
    The reinforcing plate may be chosen and added during the assembly ofthe heat exchanger with only minor effect on the assembly line. lt is to be understood that a plurality of reinforcing plates 40, 60 may bearranged side by side along the header plate 20. The reinforcing plates 40, 60may be arranged side by side in contact with each other or be arranged withan intermediate distance.
    By making the reinforcing plates 40, 60 in the very same material asthe rest of the heat exchanger with the exception of the coolant housing whichtypically is made of plastics, the reinforcing plate 40, 60 requires no separatejoining step but will be brazed to adjacent components being in contacttherewith during the conventional brazing step. Further, by being of the samematerial as the header plates 20 and the tubes 30, the reinforcing plates 40,60 will move thermally together with the rest of the heat exchanger causingno additional stress to the brazed joints. lt is appreciated that the embodiments of the invention as disclosedabove may be altered in different ways within the scope of the appendedclaims. For example, the number of apertures 42 and 62 and the geometrythereof may vary depending on the type of tubes and their geometry. Anotherexample is that the border may take any suitable form. lt is appreciated thatthe reinforcing plate according to the invention can be used in any type ofheat exchanger where the coolant housings are attached to the header plateby crimping, brazing, welding or the like.
    权利要求:
    Claims (1)
    [1] 1. Heat exchanger comprising: a coolant housing (10) having a border (11) which defines anopening; a header plate (20) arranged to cover the opening; wherein the header plate (20) crimps the border (1 1) of thecoolant housing (10) by encompassing a free edge portion (13), anouter side surface portion (14) and an outer upper surface portion (15)on at least two opposing locations on the border (11); whereby a closed cavity (50) for coolant is defined by thecoolant housing (10) and the header plate (20); and wherein the header plate (20) is provided with apertures (22),each aperture (22) receiving a tube (30) for guiding coolant from or tothe closed cavity (50); the heat exchanger further comprising: a reinforcing plate (40, 60) extending between two opposinglocations on the border (1 1) of the coolant housing (10), and extendingon the outside of the header plate (20) in view of the closed cavity (50); wherein the reinforcing plate (40, 60) is joined, at each of saidopposing locations, to an outer surface portion of the header plate (20)encompassing a corner between the free edge portion (13) and theouter side surface portion (14) of the border (11); and wherein the reinforcing plate (40, 60) is provided with at leastone aperture (42, 62) embracing one or more of the tubes (30) whichare received by the header plate (20). _ The heat exchanger according to claim 1, wherein the reinforcing plate (40) is joined to one or more tubes (30) embraced by the apertures(42) of the reinforcing plate (40). The heat exchanger according to claim 1, wherein the reinforcing plate(60) is arranged to provide a gap between the reinforcing plate (60)and each of one or more tubes (30) embraced by the apertures (62) ofthe reinforcing plate (60). 14 _ The heat exchanger according to any of claims 1-3, wherein each of the at least one apertures (42) of the reinforcing plate (40) embracesonly one tube (30) received by the header plate (20). _ The heat exchanger according to any one of claims 1-3, wherein each of the at least one apertures (62) of the reinforcing plate (60) embracesa plurality of tubes (30) received by the header plate (20). _ The heat exchanger according to any one of claims 1-5, wherein the opening defined by the border (11) is oblong; andwherein the reinforcing plate (40, 60) is arranged to extendbetween two opposing locations on a long side of the border (11). _ The heat exchanger according to claim 6, wherein the tubes (30) are arranged in a plurality of parallelrows, each row comprising a plurality of tubes (30); wherein the rows extend in the direction of the long side of theborder (11); and wherein the reinforcing plate (40, 60) embraces at least twoadjacent tubes (30) in each row. _ The heat exchanger according to any one of claims 6 or 7, wherein the reinforcing plate (40, 60) is arranged at a central area of the headerplate (20) with respect to the long side of the border (11). _ The heat exchanger according to any one of claims 1-8, wherein the tubes (30) have an oblong cross-section and arearranged with the same orientation, and wherein the reinforcing plate (40, 60) extends along the longsides of the tubes (30). 10_The heat exchanger according to any one of claims 1-9, wherein the reinforcing plate (40, 60) is joined to the header plate (20) by brazing. 1 1 .The heat exchanger according to any one of claims 1-10, wherein the header plate (20) encompasses also an inner side surface portion (12)at each of said two opposing locations on the border (11). 12.The heat exchanger according to any one of claims 1-11, wherein thecoolant housing (10) comprises a top wall (16) and side walls (17)which extend from the top wall (16), the top wall (16) and side walls(17) defining a bowl-shaped inner space of the coolant housing (10).
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1450793|2014-06-27|
    SE1550865A|SE542001C2|2014-06-27|2015-06-23|Heat exchanger with reinforced header plate|SE1550865A| SE542001C2|2014-06-27|2015-06-23|Heat exchanger with reinforced header plate|
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