CN101600930A - Multi-circuit heat exchanger - Google Patents

Multi-circuit heat exchanger Download PDF

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Publication number
CN101600930A
CN101600930A CN200780050987.6A CN200780050987A CN101600930A CN 101600930 A CN101600930 A CN 101600930A CN 200780050987 A CN200780050987 A CN 200780050987A CN 101600930 A CN101600930 A CN 101600930A
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CN
China
Prior art keywords
pipeline
interchanger
fluid
circuits
connecting element
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
Application number
CN200780050987.6A
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Chinese (zh)
Inventor
克里斯琴·里昂德特
让-米歇尔·海恩库特
让-马克·莱苏尔
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Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of CN101600930A publication Critical patent/CN101600930A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-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
    • F28D1/02Heat-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
    • F28D1/04Heat-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
    • F28D1/0408Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0443Combination of units extending one beside or one above the other
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0202Header boxes having their inner space divided by partitions
    • F28F9/0204Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F2009/0285Other particular headers or end plates
    • F28F2009/0287Other particular headers or end plates having passages for different heat exchange media
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00Reinforcing means
    • F28F2225/08Reinforcing means for header boxes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00Thermal insulation; Thermal decoupling
    • F28F2270/02Thermal insulation; Thermal decoupling by using blind conduits

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The present invention relates to a kind of heat exchanger (1), comprise at least two circuit (A, B), this interchanger (1) comprising :-one group of pipeline (t1 to t7), be used for two circuit (A, the circulation of the fluid of B) or another,-at least two collecting ring (C1, C2), each all is connected to the opposite end of pipeline, described pipeline is open to respectively in the described collecting ring,-spacer (P1), be arranged in each of described collecting ring to limit at least one border so that the first fluid circuit and second fluid line are isolated,-mechanical connecting device (5) is connected to collection chamber with the structure of inlet chamber, and is set to significantly reduce the structural mechanical stress of the boundary between two circuits, it is characterized in that described mechanical device (5) comprises to be orientated as and the complete closed (3) of at least one pipeline (t4) of spacer next-door neighbour or partially enclosed.

Description

Multi-circuit heat exchanger
The present invention relates to a kind of multi-circuit heat exchanger.
More specifically, but not exclusively, its theme is a kind of interchanger, comprises independently circuit of at least two independences or part, and at least two fluids circulated in these circuits before by air outside circulation cooling, and described at least two fluids can be identical or different.
It is applied to the multi-circuit heat exchanger that uses especially in auto industry, so that cool off two elements with different cooling requirements, and for example hot machine and gearbox.
The present invention is particularly useful for the multi-circuit heat exchanger that uses under the situation of hybrid engine (hybrid engine), the heat of cooling machine on the other hand so that cool off electric notor on the one hand.
Based on the reason of manufacturing cost and for making it more easy of integration in vehicle, preferably in a multi-circuit heat exchanger rather than in two independent interchangers, carry out the refrigerating function of two fluids.On the contrary, be starved of by removing the thermal stress that causes by temperature contrast between two circuits as far as possible to make two circuits heat insulation as much as possible.Especially, the fluid that circulates in two independent circuits must not have identical cooling energy demand, must not have identical entrance and exit temperature yet.For the operation and the life-span of optimization interchanger, it is very important thus that thermal stress is minimized.
Usually, interchanger comprises one group of thin light-alloy cylinder pipeline, is generally flat and introduces in two collecting rings.Sealing between these pipelines and collecting ring is by inserting elastic sealing element or realizing by soldering (braise).Extremely thin light-alloy interlocking band is folded into the accordion shape and is inserted between the pipeline so that increase contact area between interchanger and the surrounding air, and wherein this surrounding air navigates between the pipeline; These interlocking bands are commonly called insert.
Usually, multi-circuit heat exchanger is included in two separation spacers in the collecting ring, so that two circuits are separated.Disadvantageously, the structural detail (mainly being light wall pipe) near this spacer can not bear the mechanical stress (especially tired) that causes owing to the temperature contrast that exists between two circuits (especially because the temperature contrast circulation).For example the such thin structure of pipeline is the easiest breaks and produces leakage.
Under the situation of the light-alloy pipeline of soldering, this situation is especially serious, because the required heat treatment of soldering makes light-alloy rigidity step-down, and more is easy to generate the crackle that comes from thermal stress, particularly with respect to bending or tensile stress.
In order to attempt eliminating these defectives, proposed to increase spacer cross section or even that its cross section is become is double, yet problem still exists because hot channel and relatively the difference between the colder pipeline expand and still exist and form excessive inside fatigue stress.
In addition, should be noted that when the thermal gradient of the boundary between two circuits was big, the thermal stress of this position between two circuits was very considerable.
In order to eliminate these main defectives, the present invention improves on the basis of said structure, and proposes a kind of interchanger, comprises at least two circuits, and this interchanger comprises:
-one group of pipeline is used for the circulation of the fluid of of two circuits or another,
-at least two collecting rings, each is connected to the opposite end of pipeline, and described pipeline is open to respectively in the described collecting ring,
-spacer is arranged in each of described collecting ring and limits at least one separating part, so that first circuit of fluid and second circuit are isolated,
-mechanical connecting device is connected to collection chamber with the structure of inlet chamber, and is set to significantly reduce the structural mechanical stress that exists in the separating part between two circuits,
According to the present invention, the feature of this interchanger is that described mechanical device comprises the sealing wholly or in part (closing off) of orientating at least one pipeline that is close to spacer as.
Above-mentioned mechanical stress results from the difference of heat-exchanger pipeline and expands, and different the expansion caused by the temperature contrast between two circuits.
" separating part (separation) " means an imaginary line, and it connects two spacers being in respectively in each collecting ring, and indicated border or boundary between each of two circuits.In the mode of routine, this separating part comprises along the axis of pipeline and/or spacer or extends straight line or the plane that extend on the plane.
In non-limiting example, can be separately or have following add ons and/or feature in combination according to multi-circuit heat exchanger of the present invention:
-mechanical connecting element comprises pillar.
-pillar or mechanical device are in close proximity to the fluid flow pipeline of approaching described separating part.
-the mechanical connecting element that mechanically connects two collecting rings is positioned between two adjacent channels of two circuits.
-mechanically connect in the mechanical connecting element of two collecting rings or the zone that pillar is positioned in interchanger, the temperature in this zone and expand thus between the temperature that is in two circuits by-level and expand between by-level.
-the mechanical connecting element that mechanically connects two collecting rings comprises at least two solid or hollow bars or pillar, and described bar or pillar are placed in each side of the separation spacer that exists between the dispensed chambers.
-mechanical connecting element or pillar comprise the extension of the spacer of separating described chamber.
-mechanical connecting element or pillar comprise pipeline, wherein do not have a fluid flow but this pipeline is identical with other heat exchanging pipe.
-mechanical connecting element or pillar comprise at least one heat exchanging pipe, have limited fluid intake and/or outlet opening so that the flow of limit fluid but described at least one heat exchanging pipe is identical with other heat exchanging pipe.
-mechanical connecting element or pillar comprise at least one heat exchanging pipe, but described at least one heat exchanging pipe identical with other heat exchanging pipe in a zone, have bigger wall thickness at least near fluid intake and/or outlet opening in case the limit fluid flow and make Connection Element at least partly machinery strengthen.
-mechanical connecting element or pillar comprise a plurality of pipelines, wherein do not have a fluid flow but described a plurality of pipeline is identical with other heat exchanging pipe, and these pipelines are positioned on the either side of the wall of separating two circuits.
-interchanger is mechanically assembled by crimping (crimping) fully and is not used soldering.
The separation spacer of two circuits of-separation comprises aperture, and this aperture allows fluid to advance to another circuit from a circuit.
-multi-circuit heat exchanger mainly is made of aluminium alloy, and assembles by soldering.
-multi-circuit heat exchanger can comprise the box of being made by the plastics injection, and these boxes are assembled into collecting ring by crimping.
Embodiments of the invention will be as limiting examples and are described further with reference to the accompanying drawings, in the accompanying drawings:
Fig. 1 is the schematic cross section according to the multi-circuit heat exchanger with two separate lines of prior art;
Fig. 2 schematically shows the exemplary embodiment that has the interchanger of two separate lines according to of the present invention;
Fig. 3 to 8 is the schematic cross section according to the variant embodiment of the interchanger with two separate lines of the present invention.
In explanation subsequently, statement " mechanical device " will be used to limit theme of the present invention in mode usually.Yet, be clear that very this statement also can show as term " pillar ", especially in order to show that this mechanical device connects two afflux boxes.
Fig. 1 shows the interchanger of producing according to prior art usually with two separate lines 1.It comprises the first circuit A and circuit B, and wherein first fluid circulates in the first circuit A, and second fluid circulates in circuit B.This interchanger comprises that two collecting ring C1 and C2 are used to collect fluid.Each all is divided into two parts by wall P1 and P2 these collecting rings.One group of pipeline (under this situation 7 altogether) t1 connects two collecting rings to t7.The thin interlocking band that is folded into the accordion shape by aluminium alloy is inserted between the pipeline to be increased in the contact area between pipeline and the surrounding air.Each circuit all includes an inlet and an outlet.The fluid of circuit A enters this circuit via inlet Ea and is circulating in pipeline t1, t2, t3 and t4 after left by outlet Sa.The fluid of circuit B enters this circuit via inlet Eb and is circulating in pipeline t5, t6 and t7 after left by outlet Sb.If the mean temperature of the first fluid in circuit A is greater than the mean temperature of second fluid among the circuit B, then pipeline t1 arrives t7 heat to t4 than pipeline t5.In this case, pipeline t1 tends to expand more than pipeline t5 to t7 to t4.Compression that such result is exactly pipeline t1 in the t4 and bending stress and pipeline t5 stretching and the bending stress in the t7.Because extreme indeterminate (hyperstatic) property of the mechanical connection of pipeline/collecting ring, pipeline t5 and stand to form risk of crack near the structure of this pipeline t5 end is the easiest under the fatigue effect of the stretching/bending stress of alternation.
In the non-restrictive illustrative embodiment shown in Fig. 2 to 8, this interchanger mainly comprises:
-two independently circuit A and B are divided into the collecting ring C1 of two independent sectors by wall P1,
-the second collecting ring C2 is divided into two independent sectors by wall P2 equally,
-three pipeline t1, t2 and t3 are connected to collecting ring C2 in mode hermetically with collecting ring C1, and allow the first fluid among the circuit A to be passed to outlet Sa from inlet Ea,
-three pipeline t5, t6 and t7 are connected to collecting ring C2 in mode hermetically with collecting ring C1, and allow second fluid among the circuit B to advance to outlet Sb from inlet Eb,
-be folded into the strip of accordion shape by light-alloy, be inserted between the pipeline being increased in the contact area between pipeline and the surrounding air,
-mechanical fastener S mechanically connects two collecting rings.
Shown in Figure 2 according to first exemplary embodiment of the present invention in, mechanical fastener S comprises the pipeline t4 that is made by light-alloy.For conforming purpose, and in order to reduce manufacturing cost, such pipeline-like pipeline that is used for fluid flow that is similar to.Yet,, do not have fluid flow as among the pipeline t4 of additional structure.In order to prevent fluid in this ducted any circulation, the one or both ends of one or two stop part 3 closed conduct t4.Again since pipeline t4 for fluid arranged, its state of temperature that mediates, it has reduced the stress that causes owing to the temperature contrast that exists to a certain extent between two circuits.
Shown in Figure 3 according to second exemplary embodiment of the present invention in, mechanical fastener S, or pillar comprises two pipeline t3 and t4 that made by light-alloy.These two pipelines are closed in their one or both ends, thereby example is such as described above, can not be passed by fluid.Again since pipeline t3 and t4 for fluid is arranged, their state of temperatures that mediates, it has reduced the stress that causes owing to the temperature contrast that exists to a certain extent between two circuits.
Shown in Figure 4 according to the 3rd exemplary embodiment of the present invention in, mechanical fastener S comprises two the pipeline t4 and the t5 that are made by light-alloy.These two pipelines are closed in their one or both ends, thereby example is such as described above, can not be passed by fluid.Again since pipeline t4 and t5 for fluid is arranged, their state of temperatures that mediates, it has reduced the stress that causes owing to the temperature contrast that exists to a certain extent between two circuits.
Shown in Figure 5 according to the 4th exemplary embodiment of the present invention in, mechanical fastener S comprises four pipeline t4, the t5, t6 and the t7 that are made by light-alloy.These four pipelines are closed in their one or both ends, thereby example is such as described above, can not be passed by fluid.Again since pipeline t4, t5, t6 and t7 for fluid is arranged, their state of temperatures that mediates, it has reduced the stress that causes owing to the temperature contrast that exists to a certain extent between two circuits.
Shown in Figure 6 according to the 5th exemplary embodiment of the present invention in, mechanical fastener S comprises the pipeline t4 that is made by light-alloy.This pipeline is partly sealed, thereby can be passed with less flow by fluid.It is less that so thus pipeline and pipeline are compared for the influence of structural stress by the situation of complete closed, but still make can reduce the stress that causes owing to the temperature contrast that exists to a certain extent between two circuits.
Shown in Figure 7 according to the 6th exemplary embodiment of the present invention in, mechanical fastener S comprises two the pipeline t3 and the t4 that are made by light-alloy.These pipelines are partly sealed, and are passed with less flow by fluid.It is less that so thus pipeline and pipeline are compared for the influence of structural stress by the situation of complete closed, but still make can reduce the stress that causes owing to the temperature contrast that exists to a certain extent between two circuits.
Shown in Figure 8 according to the 7th exemplary embodiment of the present invention in, mechanical fastener S comprises three pipeline t3, the t4 and the t5 that are made by light-alloy.These pipelines are partly sealed, and are passed with less flow by fluid.It is less that so thus pipeline and pipeline are compared for the influence of structural stress by the situation of complete closed, but still make can reduce the stress that causes owing to the temperature contrast that exists to a certain extent between two circuits.
In according to eighth embodiment of the present invention (not shown), mechanical fastener S comprises the metallic plate P that passes completely through interchanger 1, and this plate is made by light-alloy in this case.This plate P is soldered to the periphery of each collecting ring so that guarantee sealing between two circuits.And be formed on two rigid attachment (rigid link) between the collecting ring thus.This plate P is the state of temperature that mediates thus, and it can reduce the stress that causes owing to the temperature contrast that exists between two circuits.This plate can advantageously be substituted by hollow sheeting.
Those skilled in the art can be applied to this design can not deviate from the scope that is defined by the following claims of the present invention in a lot of other similar systems.

Claims (13)

1, a kind of interchanger (1) comprises at least two circuits (A) and (B), and described interchanger comprises:
-one group of pipeline is used for the circulation of two circuits (A) or (B) or another fluid,
-at least two collecting rings, each is connected to the opposite end of pipeline, and described pipeline is open to respectively in the described collecting ring,
-spacer (P1 and P2) is arranged in each of described collecting ring to limit at least one separating part, so that first circuit (A) of fluid is isolated with second circuit (B),
-mechanical connecting device (S) is connected to collection chamber with the structure of inlet chamber, and is set to significantly reduce the structural mechanical stress that exists in the spacer between two circuits,
It is characterized in that described mechanical device (S) comprises to be orientated as and spacer (P1) and (P2) sealing wholly or in part of at least one pipeline of next-door neighbour.
2, interchanger as claimed in claim 1 is characterized in that, mechanical connecting element (S) comprises pillar.
3, interchanger as claimed in claim 1 or 2 is characterized in that, described pillar or mechanical device (S) are in close proximity to the fluid flow pipeline of approaching described separating part.
4, interchanger as claimed in claim 1 is characterized in that, the mechanical connecting element (S) that mechanically connects two collecting rings is positioned between two adjacent channels of two circuits.
5, the described interchanger of arbitrary as described above claim, it is characterized in that, mechanically connect in the mechanical connecting element (S) of two collecting rings or the zone that pillar is positioned in interchanger, the temperature in this zone and expand thus between the temperature that is in two circuits by-level and expand between by-level.
6, interchanger as claimed in claim 1 is characterized in that, the mechanical connecting element (S) that mechanically connects two collecting rings comprises at least two solid or hollow bars or pillar, is placed in each side of the separation spacer that exists between the dispensed chambers.
7, the described interchanger of arbitrary as described above claim is characterized in that, described mechanical connecting element (S) or pillar comprise the extension of the described spacer of separating described chamber.
8, the described interchanger of arbitrary as described above claim is characterized in that, described mechanical connecting element (S) or pillar comprise pipeline, does not wherein have a fluid flow but this pipeline is identical with other heat exchanging pipe.
9, the described interchanger of arbitrary as described above claim, it is characterized in that, described mechanical connecting element (S) or pillar comprise at least one heat exchanging pipe, have limited fluid intake and/or outlet opening so that the flow of limit fluid but described at least one heat exchanging pipe is identical with other heat exchanging pipe.
10, the described interchanger of arbitrary as described above claim, it is characterized in that, described mechanical connecting element (S) or pillar comprise at least one heat exchanging pipe, but described at least one heat exchanging pipe identical with other heat exchanging pipe in a zone, have bigger wall thickness at least near fluid intake and/or outlet opening in case the limit fluid flow and make Connection Element at least partly machinery strengthen.
11, the described interchanger of arbitrary as described above claim, it is characterized in that, described mechanical connecting element (S) or pillar comprise a plurality of pipelines, wherein there are not fluid flow, these pipelines to be positioned on the either side of the wall of separating two circuits but described a plurality of pipeline is identical with other heat exchanging pipe.
12, the described interchanger of arbitrary as described above claim is characterized in that, described interchanger is mechanically assembled by crimping fully and do not used soldering.
13, the described interchanger of arbitrary as described above claim is characterized in that, the separation spacer of separating two circuits comprises aperture, and this aperture allows fluid to advance to another circuit from a circuit.
CN200780050987.6A 2007-02-06 2007-12-11 Multi-circuit heat exchanger Pending CN101600930A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0700815 2007-02-06
FR0700815A FR2912209B1 (en) 2007-02-06 2007-02-06 MULTI-CIRCUIT EXCHANGER

Publications (1)

Publication Number Publication Date
CN101600930A true CN101600930A (en) 2009-12-09

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Application Number Title Priority Date Filing Date
CN200780050987.6A Pending CN101600930A (en) 2007-02-06 2007-12-11 Multi-circuit heat exchanger

Country Status (6)

Country Link
US (1) US20110030935A1 (en)
EP (1) EP2115374A1 (en)
JP (1) JP2010518344A (en)
CN (1) CN101600930A (en)
FR (1) FR2912209B1 (en)
WO (1) WO2008107031A1 (en)

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US10215496B2 (en) 2013-02-19 2019-02-26 Bosal Emission Control Systems Nv Multi-flow heat exchanger for exchanging heat between cool fluid and hot fluid
CN105473972A (en) * 2013-06-13 2016-04-06 法雷奥汽车系统有限公司 Heat exchanger for vehicle
CN109154480A (en) * 2016-03-18 2019-01-04 法雷奥热系统公司 Heat exchanger and relevant manufacturing method
CN109154480B (en) * 2016-03-18 2021-03-02 法雷奥热系统公司 Heat exchanger and associated manufacturing method

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US20110030935A1 (en) 2011-02-10
EP2115374A1 (en) 2009-11-11
FR2912209A1 (en) 2008-08-08

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