CN102575915A

CN102575915A - Collector plate for heat exchanger and corresponding heat exchanger

Info

Publication number: CN102575915A
Application number: CN201080045329XA
Authority: CN
Inventors: P·伯伊塞勒; G·吉勒; D·波蒂尔
Original assignee: Valeo Systemes Thermiques SAS
Current assignee: Valeo Systemes Thermiques SAS
Priority date: 2009-10-08
Filing date: 2010-10-07
Publication date: 2012-07-11
Also published as: CN105823366A; EP2486360A1; BR112012006987A2; PL2486360T3; ES2545697T3; FR2951259A1; WO2011042491A1; FR2951259B1; BR112012006987B1; MX2012004131A; CN105823366B; IN2012DN02438A; EP2486360B1

Abstract

The invention relates to a collector plate (14) for a heat exchanger capable of receiving a cover for a collector housing of said heat exchanger, said collector plate comprising at least one hole (18) for the passage of a tube of said heat exchanger, said hole (18) having a periphery provided with a collar (20), and said collar (20) having a height (H1, H2), characterized in that the height of said collar (20) is variable on the periphery of the hole (18) for the passage of said tube. The invention also relates to a heat exchanger provided with such a collector plate.

Description

The tube plate and the corresponding heat exchanger that are used for heat exchanger

Technical field

The present invention relates to the field of heat exchanger,, and more particularly also relate to the tube plate that is used for such heat exchanger especially for heat exchanger of motor vehicles.

The present invention can be applied to the interchanger of mechanical type especially, and this interchanger comprises the heat exchange core bundle, and said heat exchange core bundle comprises pipe and is known as the heat exchange elements of fin.Fin is arranged as and is parallel to each other and perpendicular to pipe.In other words, fin is stacked on top of each other.Substantially, fin is pierced porose, and what be used to manage passes through, and the quantity in hole equals the quantity of in said path, managing.

In this case, pipe-fin core bundle is mechanically kept together by means of the instrument (being also known as olive shape part (olive)) that is inserted in the pipe, so that make the wall distortion of pipe and by the strong hand they are pressed the hole of making in the fin.It is separate that fin is separated spacing, and said separation pitch for example has one millimeter magnitude.

The present invention relates more specifically to tube plate, and said tube plate comprises a plurality of holes, and said hole is designed to receive the end of the pipe of heat exchanger.Each is inserted into the end of pipe in the tube plate that is provided with the opening that is used for receiving said pipe.Tube plate tegmentum subsequently covers, to form header.

Background technology

Actual also known, in the heat exchanger of mechanical type, tube plate is equipped with seal.Pipe uses the die forging operation be known as " enlarging " assembled with tube plate, this operation comprise each end that makes pipe open in case push seal and so for good and all and fluid hermetically the end and the plate of managing are fitted together.

Sealing therefore through the control seal pressed the hole in the tube plate neck portion degree and guaranteed; But have circular cross-section according to pipe and still have ellipse or elongate section (as common all the more under the situation of improving heat exchanger performance), this control is different.

Particularly, have at pipe under the situation of circular cross section, for example shown in the document FR-A-2474674, because omnidirectional is around the balance of the circle of the power of pipe diameter, the sealing of the connecting portion between pipe and the tube plate is by control ideally.Can reduce the thickness of pipe thus, and not have said pipe under the effect of seal compression, to become the risk of crushing.

On the contrary, have at pipe under the situation of oval or elongated cross section (being limited its major axis and its minor axis), shown in document FR-A-2740869, the seal that must realize is not a circle and be ellipse now, so that can stop up tube pitch.But power is uneven around the distribution of the periphery of oval cross section, and this is because the minor axis of the end of pipe is strong not as its major axis, and therefore minor axis has more yielding trend under the pressure of seal.Sealing no longer is optimum thus, and this is because the heterogeneous deformation of pipe has produced the gap between seal and pipe.Leak of liquid in interchanger can take place subsequently and cause interchanger to quit work, and for example stops the liquid of cool cycles through heat exchanger.The etching problem that causes through the invasion of salt between seal and pipe also can occur.

Summary of the invention

The objective of the invention is thus through providing tube plate to alleviate aforementioned disadvantages; Said tube plate comprises the pipe with ellipse or elongated cross sections; To this, seal is ideally controlled around the compression of the periphery of the oval cross section of pipe, is desirable so that make the sealing of the pipe of this shape.

Theme of the present invention is the plate that is used for heat exchanger thus; Said plate can receive the lid of the header that is used for said heat exchanger, and said tube plate comprises at least one hole, is used for the passing through of pipe of said heat exchanger; Said hole has the periphery that is provided with neck portion, and said neck portion has height.According to the present invention, the height of said neck portion can change around the periphery that is used for the hole that said pipe passes through.

More particularly; Neck portion can have major axis and minor axis at least; And can comprise at least one first with maximum height and second portion with minimum constructive height; Said part with maximum height is positioned on the minor axis of neck portion, and the said part with minimum constructive height is positioned on the major axis of neck portion.

Neck portion can and have between the part of maximum height in the part with minimum constructive height and have mid portion, and the height of this mid portion little by little changes having minimum constructive height and have between two parts of maximum height.

Preferably, the cross section of neck portion is elongated more, and the ratio between two height of the neck portion of tube plate can be high more.

The cross section of neck portion can have oval or elongated shape.

The invention still further relates to a kind of heat exchanger; Said heat exchanger can comprise the heat exchange core bundle that is provided with at least one such tube plate; Said core bundle can comprise fin and the pipe with ellipse or elongated shape; Said fin comprises the hole, and what be used to manage passes through and be set to be parallel to each other, and said pipe mechanically is out of shape so that pipe is pressed is used to manage the hole of passing fin.Under these circumstances, the wall of pipe is deformed into and makes said pipe press the hole that said pipe passes through that is used in the fin by the strong hand.

Heat exchanger may further include seal, and said seal can press said tube plate and comprise flange, and said flange has the shape substantially the same with the neck portion of tube plate, and said flange is inserted in the neck portion of tube plate.

Description of drawings

The present invention will be better understood with descriptions several embodiment shown in the drawings through reading is that provide by non-limiting example, in the accompanying drawings:

Fig. 1 is schematically roughly arranging of heat exchanger;

Fig. 2 is the partial cross section view according to heat exchanger of the present invention;

Fig. 3 is the sectional view on the III-III of Fig. 2; And

Fig. 4 is the cross-sectional view of tube plate of the heat exchanger of Fig. 2.

The specific embodiment

Fig. 1 has described the sketch map of heat exchanger, for example is used for the radiator of cooler motor vehicle.

Here, heat exchanger is a mechanical type.In other words, it is processed by at least one heat exchange core bundle 2 usually, and said heat exchange core bundle 2 comprises pipe 4 and heat exchange elements, and said pipe 4 is arranged as and is parallel to each other, and said heat exchange elements is known as fin 10.Fin 10 be set to be parallel to each other and perpendicular to the pipe 4.In other words, fin is stacked on top of each other.Substantially, it is porose 18 that fin is pierced, and is used to manage 4 pass through, and the quantity in hole 18 equals the quantity of in said path, managing.

Core bundle 2 is installed in two headers (header box) between 6 and 8.

Each pipe 4 comprises free end 12, and said free end 12 is mechanically assembled with tube plate 14, and said tube plate 14 also is known as " collector device ", and it forms each

header

6 and 8 with lid.

Before pipe and tube plate were assembled, the end 12 in the tube plate of being inserted into of pipe had and pipe identical cross section in the main cross section of reception fin 10.After assembling, the end of pipe is out of shape/opens to making them be affixed to tube plate 14 and compressive seal (describing after a while).

Tube plate 14 comprises main web 16, and said main web 16 has the overall shape of rectangle and defines a plurality of holes 16, and in this example, these holes have ellipse or elongated cross sections, end 12 that can receiving tube.Each hole 18 is centered on by neck portion 20, and said neck portion 20 is directed towards fin 10, and neck portion 20 has increased tube plate 14 and managed the contact area between each the outer peripheral wall in 4.The contour limit that the cross section of neck portion 20 is caused by the cross section, said cross section is along the plane of substantial lateral in said neck portion.

Main web 16 is extended by perimeter trench 22, and said perimeter trench 22 defines groove and peripheral finally upstand 24, and said peripheral upstand 24 forms folding protuberance, also is known as curling protuberance.Tube plate 14 receives compressible seal member 26, and said compressible seal member 26 becomes the main web 16 that presses tube plate.Seal 26 comprises a plurality of flanges 30, and each flange 30 is fitted in the hole 18, with sealing between the neck portion 20 of end 12 of managing and correspondence.In addition, main web 28 forms bossing 32 in its perimeter, and said bossing 32 is arranged in the groove 22 and can work as peripheral upstand 24 folding past tenses and seals in the lid of

header

6 or 8 one or another.

As can in Fig. 3, see, the cross section with end 12 pipe 4 the hole 18 in the tube plate 14 has oval basically shape, it is characterized in that major axis A and minor axis B.Pipe 4 cross section is on the contour limit of this pipe 4 that is caused by the cross section, the plane of this cross section along substantial lateral in said pipe.

In order to guarantee best sealing in the neck portion 20 and the compression of managing the flange 30 between 4 the end 12 through seal 26; The present invention imagination increases the height of the neck portion 20 of tube plate 14 at pipe 14 in compression provides the zone of minimum drag, so that make the distributing equilibrium of the compressive load on the seal of the periphery of the cross section of said pipe 4.

Do like this, can on pipe 4 periphery, tell be positioned on the major axis A and have to two parts 34 of the high drag of compression be positioned on the minor axis B and have two parts 36 low resistance of compression, each part with same tag faces with each other.

The applicant finds that the part 36 of minor axis B is the parts that the compression of the flange 30 of seal 26 provided minimum drag.In other words, the pipe 4 minor axis B that strides across it is so strong not as its major axis A that strides across it.

Fig. 4 illustrates the character shape according to the neck portion 20 of tube plate 14 of the present invention.Therefore neck portion 20 comprise part 38 with minimum constructive height H1 and have the part 40 of maximum height H2, and said part 38 is towards the part 34 of the major axis A of pipe, and said part 40 is towards the part 36 of the minor axis B of pipe 4.

Mid portion 42 provides continuity between the part with differing heights 38 and 40, and is included in the height that develops gradually between part 38 with minimum constructive height H1 and the part 40 with maximum height H2.In other words, neck portion end is created as, and is no longer straight or be in the same plane as neck known in the art portion end, and it is the neck portion with changes shape.

In one embodiment of the invention, the major axis A of pipe 4 is bigger 2.5 times than minor axis B, and the minimum constructive height H1 of part 38 equals 3mm thus, and the maximum height H2 of part 40 equals 3.5mm.

In other examples, can make between major axis A and the minor axis B to have different ratios, can for example make the major axis A of pipe 4 bigger 2.8 or 3 times than minor axis B.Yet the cross section of the end 12 of pipe 4 is elongated more, and the difference between the value of height H 1 and H2 will be big more.So this has guaranteed neck portion 20 and has managed the optimal seal between 4 the end 12 that pipe can bear the power that is applied by the compression of the flange 30 of seal 26.

In this case, the flange 30 of seal 26 has the character shape identical with neck portion 20.Therefore contact area between the neck portion 30 of pipe 4 and seal is increased, so that center on the circumferential distribution load of said pipe best.Be applied to the load of pipe so become and adapt with its intensity.

By the present invention, therefore can enjoy a kind of tube plate, said tube plate is relatively easily produced, and can realize that load centers on the even distribution of the periphery of the pipe with ellipse or elongated shape.The compression of the seal between the neck portion of end and the tube plate of pipe thus by control ideally and therefore its fluid sealability optimize more.The shape of neck of the present invention portion can be applied to the collector device of any kind, and does not consider to be used for the quantity of the path of tube plate core bundle.The present invention can be applied to be used for the production of heat exchanger of the mechanical type of motor vehicles especially, and especially for the radiator of cooling or heating.

In addition, in the zone of this part that compression is provided least resistance of managing, increase the height of the neck portion of tube plate, mean that the salt invasion between seal and the pipe can be limited, therefore improve corrosion resistance.The invasion of salt, seal takes place when being compressed to such an extent that be enough to provide sealing but being not enough to prevent the infiltration through capillary effect particularly.Therefore, through increasing the height of seal, the barrier of resisting this phenomenon is owing to the surface area that contacts with pipe is enhanced more greatly.

Claims

1. tube plate (14) that is used for heat exchanger; Can receive the lid of the header (6,8) that is used for said heat exchanger, said tube plate comprises at least one hole (18), is used for the passing through of pipe (4) of said heat exchanger; Said hole (18) has the periphery that is provided with neck portion (20); Said neck portion (20) has height (H1, H2), it is characterized in that, the height of said neck portion (20) can change around the periphery that is used for the hole (18) that said pipe passes through.

2. tube plate as claimed in claim 1; Wherein, Neck portion (20) has major axis (A) and minor axis (B); And comprise have maximum height (H2) at least one first (38) and have the second portion (40) of minimum constructive height (H1), the said part with maximum height (H2) is positioned on the minor axis (B), the said part with minimum constructive height (H1) is positioned on the major axis (A).

3. like each the described tube plate in the claim 1 and 2; It is characterized in that; Said neck portion (20) is in the part with minimum constructive height (H1) (38) and have between the part (40) of maximum height (H2) and have mid portion (42), and the height of said mid portion (42) little by little changes having minimum constructive height (38) and have between two parts of maximum height (40).

As aforementioned claim in each described tube plate, it is characterized in that the cross section of said neck portion (20) is elongated more, two height (H1) of the neck portion (20) of tube plate (14) and (H2) between ratio will be high more.

5. like each the described tube plate in the aforementioned claim, it is characterized in that the cross section of said neck portion (20) has oval or elongated shape.

6. heat exchanger; It is characterized in that; Said heat exchanger comprises that heat exchange core bundle (2) and at least one are like a described tube plate in the claim 1 to 5; Said core bundle (2) comprises fin (10) and has ellipse or the pipe of elongated shape (4), and said fin (10) comprises and be used for the hole that said pipe (4) passes through and be set to be parallel to each other, and said pipe (4) is used to make said pipe to pass the hole of fin (10) by distortion mechanically so that said pipe presses by the strong hand.

7. like the described heat exchanger of aforementioned claim; It is characterized in that; Said heat exchanger also comprises seal (26); Said seal (26) can press said tube plate and comprise flange (30), and said flange (30) has the shape substantially the same with the neck portion (20) of tube plate (14) and is inserted in the said neck portion (20).