CN101451792A

CN101451792A - Corrugated fin with louvers for a heat exchanger

Info

Publication number: CN101451792A
Application number: CN 200810178851
Authority: CN
Inventors: 赫维莱恩·罗比多; 弗吉尼·文森特; 艾蒂尼·查丁; 克劳德·贝索姆比斯
Original assignee: Valeo Systemes Thermiques SAS
Current assignee: Valeo Systemes Thermiques SAS
Priority date: 2007-12-04
Filing date: 2008-12-04
Publication date: 2009-06-10
Anticipated expiration: 2028-12-04
Also published as: JP2009139085A; FR2924491B1; FR2924491A1; EP2068106A1; CN101451792B; JP5921053B2

Abstract

The present invention relates to a corrugated fin with louvers for a heat exchanger, the fin comprises flat walls (14) connected in pair by parallel creases (16), each wall has a plurality of louvers (24). A plane (P) of the wall (14) and each louver (24) form an evolutive inclination angle from a value (alpha) in a region of the small side (30) until another value (beta) in a region of the small side (32) for conferring a twist shape to the louver. The inclination angle has a top angle (S) along the long side (26) of the louver, thus the louver is approximately twist shape. The invention is mainly used for heat exchanger of automobiles.

Description

The ripple interlayer that has shutter that is used for heat exchanger

Technical field

What the present invention relates to is heat exchanger, mainly is the heat exchanger that is used for automobile.

Specifically, the present invention relates to be used for the ripple interlayer of heat exchanger, this interlayer is formed by a sheet metal, and comprise that one forms banded planomural, these walls connect in twos by the pleat that extends in parallel therebetween at them, so that form ripple alternately, each wall wherein is in that the height between two pleats is limited in succession, each cornice has a plurality of shutters by the sheet metal excision forming is constituted, and these shutters have two along the minor face on the long limit of cuttings that the height of wall extends and two planes that are connected to wall.

These ripple interlayers that also are known as the ripple blade are used for the manufacturing of heat exchanger.Therefore these interlayers are arranged between each pipeline of a tube bank, and they are connected with these pipelines, usually these interlayers pleat separately is connected with pipeline by welding.

The direction of the pleat of interlayer is the length direction of interlayer, just Guan Shu depth direction.

In the application of the heat exchanger that is exclusively used in automobile, will carry out the inswept tube bank of air of heat exchange with other fluid usually, the heat transport fluid that described other fluids normally flow in the pipe of tube bank.

The main effect of the shutter that the ripple interlayer is contained is to utilize effective stirring of the air of inswept tube bank to improve heat exchange.The thinking of these shutters is exquisite especially, because they should make heat exchange the best, and can not increase load loss.

The conventional thought of interlayer is to force air to flow through each group of interlayer, and the inclination angle of each shutter is identical, and geometry is also identical, and they are provided with by the group series connection.In each group, each shutter is parallel to each other.When changing the shutter group, the angular aperture of shutter or inclination angle be counter-rotating just at every turn.

In this conventional thought, the air in the interlayer flows along a two dimensional path.Vertically, find that air flows through this interlayer along the length of interlayer.In vertical direction, force air to flow through the angular aperture of shutter.Therefore, owing to the alternate open angle is arranged along each group of shutter, so air is corrugated path flow along one in vertical direction.

For this reason, owing to flow mainly at two-dimensional directional, so heat exchange is not best, a large amount of heat exchange area are on some shutters of front of interlayer substantially, and load loss is very big.

Background technology

Different solutions was proposed for this reason to improve the hot property of above-mentioned shutter interlayer.

Therefore, U.S. Pat 5 311 935 was introduced a kind of geometric ranges of band height, and for this scope, the ratio between heat exchange and the load loss is best.This design of shutter interlayer has improved performance, but this has also reflected the increase of load.

The shutter interlayer that U.S. Pat 5 669 438 is described can guide the air flow pipeline, has so also just improved the hot property of heat exchange surface.But as mentioned above, these solutions increase the pressure loss, and loss is very big.

The solution that document EP 166 655, WO 2004/102102, US 6 170 566, EP 1 711 769 and US2006/0157233 propose is by the limiting layer that forms on the shutter being impacted, causing flow perturbation.But these solutions are defectiveness also, because air enters interlayer, institute is so that load loss increases.

Document WO 2006/028253 relates to is to be bent into 90 ° shutter, so that rough air very consumingly.Yet relevant load loss is also very big, so the usefulness of this scheme is very compromise.

The design of the interlayer that document US 7 040 386 and JP 200,6/5 162 175 propose is to guide the air flow pipeline, can reduce the thickness of the thermal limit layer that produces on the pipe surface thus.Like this, hot property is improved.But the raising of hot property will be passed through rough air in large quantities, makes air-flow produce accelerated motion simultaneously and realizes, so also just causes a large amount of load losses.

Therefore in brief, known solution, even they can improve heat exchange performance in some cases, but under any circumstance they can make that all load loss increases substantially.

Summary of the invention

Thereby one of purpose of the present invention is exactly the defective that overcomes above-mentioned known schemes.

For this reason, each shutter that the present invention proposes and formation variable tilted angle, wall plane, this inclination angle first value α from the first minor face zone monotonously changes to the second value β in the second minor face zone, and it is common spiral-shaped that shutter is had.

According to first embodiment, there is a summit at the inclination angle along the long limit of shutter.According to a modification, the inclination angle changes along a bus, each contact that this bus contacts with wall at the first and second minor face places by shutter, and also bus is included in the plane P.

Here use vocabulary " common spiral-shaped " to represent nonplanar spirality, it can continuous or discontinuous variation, for example can be spiral-shaped or spiral-shaped substantially.Inclination angle (being also referred to as angular aperture) can vary continuously to the second value β from the first value α, so that shutter has continuous surface.

It is also conceivable that to make this inclination angle progressively change to the second value β, thereby shutter is had by some noncontinuous surfaces of forming of the little surface of angled-off in twos from the first value α.

Wall can comprise at least two group shutters, and same group of shutter can be identical, or belongs at least two different types.

On the other hand, the present invention relates to a kind of heat exchanger, this heat exchanger comprises a parallel pipe tube bank, and a plurality of ripple interlayers that limit above, and these interlayers are arranged between each pipe of tube bank, and are connected with pipe by their pleats separately.

The new construction of this interlayer makes air carry out Three-dimensional Flow, and this flowing can produce more disturbance in limiting layer, produce Reynolds number in the zone quickly.This structure guiding air flow tube wall is so that improve the fresh air of normally inswept each pipe of tube bank of fluid and the heat transfer between the interior heat transport fluid that flows of each pipe of tube bank.

Owing to upsetting and air makes the stirring of air fierce more towards the flow direction of tube wall, therefore heat exchange is more perfect on the length of interlayer, more broadness.Near this stirring that realizes the different walls produces disturbance, thereby has reduced the influence as the thermal limit layer of resistant layer.

Force air to flow through interlayer with the shutter that is installed in series.Because each shutter has a transformable inclination angle, so can guide air more lenitively gradually along the incline direction of shutter, has so also just significantly reduced load loss.

Studies show that of interlayer of the present invention arranges that for difference of each group shutter compare with conventional interlayer, it is about 25% that load loss reduces, and in addition, hot property and conventional interlayer are basic identical.

Description of drawings

Following description only is that we are described in conjunction with the accompanying drawings as an example, wherein:

Fig. 1 is the partial side view of ripple interlayer of the present invention, and this interlayer is connected with two pipes in succession of heat-exchange tube bundle;

Fig. 2 a and 2b are the perspective views with two Implementation Modes of the shutter that can change the inclination angle of the present invention;

Fig. 3 is the perspective view that contains the part ripple interlayer of a plurality of shutters shown in Fig. 2 a and the 2b, and these shutters inclination angle separately changes to another shutter from a shutter;

Fig. 4 a, 4b, 4c and 4d are the fragmentary, perspective views of containing the ripple interlayer of laying according to different layouts of respectively organizing shutter of the present invention;

Fig. 5 is the perspective view with some faceted shutters;

Fig. 6 represents the different structure of shutter end;

Fig. 7 is the perspective view of one group of shutter being made of a plurality of identical shutters of the present invention;

Fig. 8 is the perspective view of one group of shutter being made of two kinds of shutters that are arranged alternately;

Fig. 9 is the perspective view of another group shutter of being made of two kinds of shutters that are arranged alternately according to another form of implementation;

Figure 10 is the perspective view of one group of shutter being made of two kinds of shutters that are arranged alternately according to another kind of form of implementation;

Figure 11 is the perspective view of one group of shutter being made of three kinds of shutters that repeat to arrange;

Temperature field that Figure 12 obtains when being the upstream speed (turbulent condition) of 5 meters of per seconds of expression and the interlayer shown in Fig. 4 b are at the chart that concerns along the structure in the different section of Z axle;

Figure 13 be expression for different structure of the present invention (Fig. 4 a-4d) with for traditional shutter interlayer, the ratio of hot-fluid and the temperature difference is with the curve map of the variation of the position on the interlayer;

Figure 14 is the structure shown in the presentation graphs 4b at the chart along the flow curve that obtains with the upstream speed (turbulent condition) of 5 meters of per seconds in the different end faces of Z axle;

Figure 15 a and 15b represent the shutter group according to two Implementation Modes, and each shutter in these groups all has two facets that extend on both sides, wall plane respectively, be used in the arrowband that extends in the wall plane these facets are separated;

Figure 16 is the schematic diagram that the cutting of each shutter of the shutter group of presentation graphs 15a and 15b changes; With

Figure 17 is the fragmentary, perspective view of one group of shutter, and each shutter in this group has two above facets, and these facets depart from certain angle in twos.

The specific embodiment

At first with reference to Fig. 1, the figure shows the part of ripple interlayer 10 of the present invention, this interlayer is arranged between two parallel pipes 12, this two tubes belongs to a tube bank of heat exchanger.Pipe 12 is " flat tubes ".Ripple interlayer 10 is formed by a single piece of sheet metal, aluminium alloy normally, and this interlayer comprises one group of planomural 14, utilizes the pleat 16 that extends in parallel by assigned direction (perpendicular to the plane of figure) between the planomural that these planomurals are linked to each other in twos, so that form ripple alternately.

With the welding with pleat 16 be connected to pipe 12 big surperficial 18 on so that form a heat exchanger bundles.This bundle is formed by a plurality of pipes 12 and a plurality of ripple interlayer, is arranged between the front and back two tubes of tube bank with known method each with these interlayers.

Interlayer 14 has a vertical axis A, this and the axially parallel of pipe 12.The length of interlayer 14 is extended along the direction perpendicular to figure, and corresponding to the degree of depth of restrainting.

In an example shown, be parallel to each other between the planomural 14, being used for the folding pleat 16 of latter two wall earlier is " square pleat ", it comprise one vertically extend to latter two wall 14 earlier and utilize that two walls of arcuate member 22 and this are connected flat 20.

In this example, the distance that the elder generation aspectant plane of latter two pipe that the width 1 of interlayer (corresponding to the width of a planomural 14 and two pleats 16) is restrained substantially exactly separates.Each wall 14 has a plurality of shutters 24, and the characteristic of these shutters has transformable inclination angle exactly.

Shown in Fig. 2 a, can fix these shutters 24 with the long limit 26 of shutter, or, fix these shutters with the

minor face

30 and 32 of shutter according to modification embodiment illustrated in fig. 1, from Fig. 2 b, can be clear that this point.

Realize each shutter 24 by the cutting forming of sheet material, each shutter has two

long limits

26 and 28 and two

minor faces

30 and 32, and the direction of the width 1 of long edge wall is extended, and minor face has cutting ground and is not connected with the plane P of the wall of being considered 14.

Shown in Fig. 2 a and 2b, each shutter 24 forms a changed inclination angle that is called angular aperture with plane P, and this inclination angle (promptly always increase gradually or reduce gradually) first value α from first minor face (herein being minor face 30) zone monotonously changes to the second value β in second minor face (the being minor face 32) zone herein.In the embodiment shown in Fig. 2 a, there is a drift angle S at the inclination angle along the long limit (being long limit 26) of shutter herein.According to the Implementation Modes of Fig. 2 b, the inclination angle changes along a bus, each contact that bus contacts with wall 14 at first minor face 30 and second minor face, 32 places by shutter 24, and also bus is included in the plane P.

In the embodiment of Fig. 2 a and 2b, the inclination angle varies continuously to the second value β from the first value α, so that shutter has the continuous surface of basic one-tenth spiral, particularly has one to be the shape of screw type substantially.

The first value α and the second value β are exactly the inclination angle of extending on the both sides of the plane P of wall respectively.Thus, shutter 24 comprises an inclination neutral conductor LN with wall plane P coplane, and this neutral conductor is corresponding to 0 inclination angle.In Fig. 2, dot this inclination neutral conductor.This inclination neutral conductor is usually parallel with the direction of the pleat 16 of sheet material.

As mentioned above, each wall 14 of interlayer preferably includes many group shutters, and same group shutter is identical or different to each other.

Referring now to Fig. 3,, what this illustrated is the example of one group of shutter, and each shutter in this group is different.Thereby in this example, group 34 comprises N shutter 24 _i, promptly 24 ₁To 24 _NThe sequence number of the shutter during label " i " is represented a group.From first shutter 24 ₁ Shutter 24 to the end _N, according to selected rule, first value at inclination angle is from α ₁Change to α _N, and the inclination angle second the value according to selected rule from β ₁Change to β _N

Like this, the not only tilt angle varied of same shutter, but also change to another shutter from a shutter.So therefore, that this group shutter is obtained is spiral-shaped but numerical value is respectively these two angle changings of α and β, this sees as Fig. 3 and Fig. 1.

In the example of Fig. 3, the inclination angle of each shutter of same group meets the following conditions:

First shutter (i=1):

α ₁=0 and β ₁=β _Maximum

Each shutter of back (2≤i≤N):

α ₁=α _I-1+ α _Maximum/ (N-1)

β ₁=β _I-1-β _Maximum/ (N-1)

Last shutter (i=N):

α _N=α _MaximumAnd β _N=0

In the superincumbent relational expression, i represents the ordinal number of a shutter in one group of shutter, and N is the number of the shutter in this shutter group, α _MaximumBe the greatest measure of α numerical value, β _MaximumIt is the greatest measure of β numerical value.

Draw thus, neutral parallax LN (Fig. 2) is partial to another shutter from a shutter, and this as shown in Figure 3.For first shutter 24 ₁, neutral parallax LN is in the zone of minor face 30, along with contiguous last shutter 24 _N, this neutrality parallax progressively moves, so that arrive in the zone of second minor face 32.

In the example of Fig. 3, the first value α of each shutter of each shutter group and the second value β and be steady state value.Under this particular case, this steady state value is 20 °-45 °.

Referring now to Fig. 4 a-4d,, these figure represent four kinds of different structures of interlayer respectively, and their any one wall all comprises two groups of shutters, and what consider is two walls 14 in succession that connect by pleat 16 herein.Four groups herein are expressed as: upper wall 14 usefulness labels 34 ₁, 34 ₂Expression, lower wall 14 usefulness labels 34 ₃, 34 ₄Expression.We can see group 34 ₁-34 ₄Comprise that label is 36 ₁-36 ₄" paddy ", these paddy stretch sideling, each paddy is organized the different neutral parallax LN of each shutter by this and forms.

In the structure of Fig. 4 a, paddy 36 ₁With 36 ₂(the right of figure), paddy 36 are converged in next door at pleat 16 ₃With 36 ₄Converge towards this pleat 16.

In the structure of Fig. 4 b, paddy 36 ₁With 36 ₂Between be parallel to each other, same, paddy 36 ₃With 36 ₄Between also be parallel to each other.

In the structure of Fig. 4 c, paddy 36 ₁With 36 ₂Image pattern 4a converges like that, and paddy 36 ₃With 36 ₄The direction that converges is opposite.

At last, in the structure of Fig. 4 d, paddy 36 ₁With 36 ₂Between be parallel to each other paddy 36 ₃With 36 ₄Between also be parallel to each other, but with paddy 36 ₁With 36 ₃Not parallel.

In order to prevent to organize 34 ₁, 34 ₂Each shutter between and organize 34 ₃, 34 ₄Between overlapping, simultaneously in order to utilize bigger inclination angle, so as shown in Figure 1, it is square that interlayer is preferably.In other words, this just represents to be parallel to each other between two walls 14, and they connect by pleat, and described pleat has a wall 20 vertical with this two walls 14.

Can also prevent like this by

last shutter group

34 ₁, 34 ₂And following

shutter group

34 ₃, 34 ₄Occur unwelcome interference between the air-flow that produces, and can have the air-flow that only guides by shutter.

But, the invention is not restricted to the parallel walls of the side's of formation pleat to each other, the present invention also is used for the interlayer of shapes such as variform for example sine.Like this, each wall of sheet material can be parallel, utilizes sinusoidal pleat that they are connected in twos.

According to a variant embodiment, not parallel between each wall of sheet material.Two one of walls formation in succession just do not comprise flat " sinusoidal pleat ".

As mentioned above, in the example of Fig. 3 and in the example of Fig. 4 A-4D, the angle α of each shutter and β and be preferably 20 °-45 °.

The width of each shutter (for example limiting between two long limits 26 and 28) is generally 0.8-1.4mm.In general, this width is preferably constant, but also can consider the width of shutter is changed along interlayer.

In the example of above-mentioned figure, between two

minor faces

30 and 32, be continuous surface just between the two ends of each shutter.

Yet as shown in Figure 5, interlayer can have some and have a plurality of faceted shutters.In this example, shutter comprises two

facets

38 and 40, and these two facets all are right angled triangles, and they connect along connecting edge 42, and this connects, and diagonal is pressed at the edge or oblique line extends.Under this particular case, shutter does not comprise 0 inclination angle between the first value α and the second value β.The first value α to the variation of the second value β appear on the plane P or under.

As shown in Figure 6, can there be different structures each end for shutter, and what Fig. 6 represented is seven kinds of different structures, and label from left to right is 1,2,3,4, and 5,6 and 7.In structure 1, the inclination angle is on the plane, and its drift angle is towards a left side.In structure 2, the inclination angle is under the plane, and its drift angle is towards a left side.In structure 3, the inclination angle is on the plane, and its drift angle is towards the right side.In structure 4, the inclination angle is under the plane, and its drift angle is towards the right side.In structure 5, the inclination angle is 0.In structure 6, the inclination angle along first incline direction on the both sides, plane.In structure 7, the inclination angle along second incline direction opposite with the inclination of structure 6 on the both sides, plane.

Therefore, or two ends have different structures, or two ends have identical structure, but angle difference (α and β).

Referring now to Fig. 7,, the figure shows one group of shutter, all shutters of this group are all identical, with label 24 ₁Expression.In this example, the inclination angle of each shutter is from the first value α ₁Change to the second value β ₁, and this is continuous, the overall shape of blade is a scroll.

But each shutter of same group can belong to not of the same race.

Like this, under the situation of Fig. 8, each shutter of same group belongs to two kinds of different (shutters 24 ₁With 24 ₂), they are arranged alternately.A shutter 24 ₁From value α ₁The value of changing to β ₁, a shutter 24 ₂From value α ₂Change to the second value β ₂In the example of Fig. 8, angle α ₁, β ₁, α ₂And β ₂Not 0 always.

In the example of Fig. 9, each shutter of same group also is two kinds of (shutters 24 that belong to different ₁With 24 ₂), they are arranged alternately.Angle β ₁And α ₂Be 0, and angle α ₁And β ₂Equate but be not equal to 0.In addition, shutter is opened face-to-face, and the inclination angle is relative in twos.

In the example of Figure 10, the shutter group is by two kinds of different shutters (shutters 24 ₁With 24 ₂) constitute, they are arranged alternately.Angle α ₁And β ₂ Equal 0, and β ₁And α ₂Equate but be not equal to 0.

In the example of Figure 11, each shutter of same group belongs to three kinds of different (

shutters

24 ₁, 24 ₂With 24 ₃), their each inclination angle is from the first value α ₁, α ₂, α ₃To value β ₁, β ₂And β ₃These shutters are repeated per three shutters 24 are set ₁, 24 ₂With 24 ₃Be one group, order is always identical.

The invention is not restricted to the structure of above-mentioned shutter or the structure of shutter group, these only provide as an example.Also can select each layout well according to desired performance and load loss with the shutter of a plurality of layouts.

Can for example guarantee that the rotation driving-disc of shutter cutting and moulding obtains shutter of the present invention with proper tools.The quantity of the difference dish that the structure and layout of shutter are implemented needs at every turn and influential to their complexity.

For example can use one group of different to each other dish each dish wherein to have identical tooth.

On the other hand, can use identical dish, but different teeth is arranged.Each dish departs from certain angle with respect to a last dish and/or next dish.

Following table is contrasted to the hot property of the interlayer of Fig. 4 a-4d and conventional interlayer as a reference and the result that load loss obtains.

The value (representing with watt) that this table is emphasized obtains when being each positive energy exchange is when carrying out laminar flow with air-flow and the load loss Δ P (with Pascal represent) of air-flow when carrying out turbulent flow under the speed of the upstream of per second 5m under the speed of the upstream of per second 2m.The four kinds of structures and the conventional interlayer of interlayer of the present invention relatively can reduce by about 25% load loss, and the exchange heat energy of the heat energy of exchange and conventional interlayer is the same order of magnitude substantially.In addition, the structure of the interlayer shown in Fig. 4 b can also improve hot property on a small quantity, and this just shows that the shutter of all shutter groups all has identical sensing more satisfactory.

Table

Referring now to Figure 12,, the figure shows temperature field that the air velocity (turbulent condition) for 5 meters of per seconds obtains and the structure in the Different Plane of cutting open along the Z axle shown in Fig. 4 b, described Z axle is corresponding to the axle of interlayer width.We are appreciated that heat exchange is with in close relations along the position of Z axle, and these are different with conventional interlayer.

The ratio (W/K) of the interlayer of Figure 13 presentation graphs 4a-4d and the hot-fluid of traditional shutter interlayer and the temperature difference and variation relation along the position of interlayer.Curve C 1 is corresponding to the interlayer of Fig. 4 a and 4b, and curve C 2 is corresponding to the interlayer of Fig. 4 c and 4d, and curve C 3 is corresponding to traditional interlayer.These curves show that the place of heat exchange maximum occurs in the first of interlayer (the bottom value of interbed length), and heat exchange is than the heat exchange height on back 3/4ths (the top values of interbed length) of conventional interlayer.Therefore, the distribution of the high heat exchange area on the interlayer of the present invention good than on the conventional interlayer.

The flow curve that structure shown in Figure 14 presentation graphs 4B obtains with the speed (turbulent condition) of 5 meters of per seconds in the Different Plane of cutting open along the Z axle.This figure can understand load loss where reduces in the interlayer.In fact, flowing at same position all is not subjected to any disturbance, and generally speaking, the disturbance that is subjected to of flowing on its length is significantly less than the disturbance that is subjected on the conventional interlayer.

Referring now to Figure 15 a of one group of shutter of expression,, 15b and 16, wherein the inclination angle progressively changes.Herein, shutter has two facets 44 that extend on wall plane P both sides respectively _iWith 46 _i, these two facets are separated by an arrowband that extends in this plane P 48.All arrowbands form the oblique line in the plane P.In a variant embodiment (not shown), can omit this arrowband.

Difference between Figure 15 a and the 15b is the embodiment of shutter.Therefore, the mode that the used in blinds of the shutter group of Figure 15 a is identical with the shutter of Fig. 2 a constitutes.Otherwise the mode that the used in blinds of the shutter group of Figure 15 b is identical with the shutter of Fig. 2 b constitutes.

In addition, the Implementation Modes of Figure 15 b does not have two arrowbands that shutter separates in succession.

By referring to Figure 16, find that first shutter has only a facet 44 ₁, this facet extends on one side of plane P.Second shutter comprises a facet 442 that extends on one side of plane P and the facet 46 that extends at the plane another side ₂, so continue, until last shutter, this shutter also has only a facet 46 that extends at the plane P another side _NThese facets all have a plane surface at every turn.Therefore, by moving positive cutting part (facet 44 step by step to another shutter ground from a shutter _i) and negative cutting part (facet 46 _i) correlation length just cutting and bearing cutting, just can obtain the shutter group.

Referring now to Figure 17 of another modification of expression,, shutter in the figure be similar to shown in Figure 2 spiral-shaped substantially.But, shutter 24 _iEach all comprise a noncontinuous surface, this noncontinuous surface constitutes by a plurality of little surperficial 50, each shutter here has 5 little surfaces.These little surfaces are planes, and certain angle is departed from they and adjacent little surface, so that form some steps or ladder.

Shutter waveform interlayer of the present invention mainly is used in automobile heating, ventilation and/or the air-conditioning equipment, particularly is used in the manufacturing with the car heat exchanger of these cluster tool.What relate generally to is gas cooler or evaporimeter, the charger-air cooler etc. of cooler of electric motor, driver's cabin radiator, condenser, air conditioner loop.

The pipe of heat exchanger can be any known forms.These pipes mainly comprise bend pipe, welded pipe, extruded tube etc., but also can be the pipes with plate or analog assembling back realization.

Obviously, the invention is not restricted to above-mentioned Implementation Modes, these Implementation Modes only provide as an example, the present invention includes other modification that those skilled in the art can consider, these all in the scope of claims, particularly can carry out any combination to above-mentioned different Implementation Modes.

Claims

1, a kind of ripple interlayer that is used for heat exchanger, this interlayer is formed by a sheet metal, and comprise that one forms banded planomural (14), these walls connect in twos by the pleat (16) that extends in parallel therebetween at them, so that form ripple alternately, in this group wall, each wall (14) is at the width (1) that qualification is arranged between two pleats in succession, each cornice has a plurality of shutters (24) by the sheet metal excision forming is constituted, the long limit (26 of the cutting that these shutters have two width along wall (1) to extend, 28) and two minor faces (30,32)

It is characterized in that, each shutter (24) forms the variable tilted angle with the plane (P) of wall (14), first value (α) of this inclination angle from one first minor face (30) zone changes to second value (β) in second minor face (32) zone, and it is spiral-shaped substantially that shutter is had.

According to the ripple interlayer that is used for heat exchanger of claim 1, it is characterized in that 2, the inclination angle varies continuously to second value (β) from first value (α), so that shutter has continuous surface.

According to the ripple interlayer that is used for heat exchanger of claim 1, it is characterized in that 3, first value (α) and second value (β) are corresponding to the inclination angle of extending on both sides, the plane of wall (14) (P) respectively.

4, according to the ripple interlayer that is used for heat exchanger of claim 2 or 3, it is characterized in that, from first shutter (24 ₁) to a last shutter (24 _N), the rule that the first value basis is selected is respectively from α ₁Change to α _N, and the rule that the second value basis is selected is respectively from β ₁Change to β _N

5, according to the ripple interlayer that is used for heat exchanger of one of claim 2-4, it is characterized in that the inclination angle of shutter meets the following conditions:

First shutter (i=1): α ₁=0 and β ₁=β _Maximum

Each shutter of back (2≤i≤N):

α ₁=α _I-1+ α _Maximum/ (N-1) and β ₁=β _I-1-β _Maximum/ (N-1)

Last shutter (i=N): α _N=α _MaximumAnd β _N=0

Wherein i represents the ordinal number of a shutter in the shutter group, and N is the number of the shutter in this shutter group, α _MaximumBe the greatest measure of α numerical value, β _MaximumIt is the greatest measure of β numerical value.

According to the ripple interlayer that is used for heat exchanger of one of claim 1-5, it is characterized in that 6, each shutter (24) comprises the inclination neutral conductor (LN) with plane (P) coplane of wall (14), this neutral conductor is corresponding to 0 value at inclination angle.

According to the ripple interlayer that is used for heat exchanger of claim 6, it is characterized in that 7, the inclination neutral conductor (LN) is partial to another shutter by a shutter.

8, according to the ripple interlayer that is used for heat exchanger of one of claim 2-7, it is characterized in that, first value (α) of each shutter of a shutter group and second value (β) and (alpha+beta) be steady state value.

9, the ripple interlayer that is used for heat exchanger according to Claim 8 is characterized in that, this steady state value is 20 °-45 °.

10, according to the ripple interlayer that is used for heat exchanger of claim 1, it is characterized in that, the inclination angle progressively changes to second value (β) from first value (α), thereby shutter is had by some the little surface of angled-off (50) noncontinuous surfaces of forming in twos.

According to the ripple interlayer that is used for heat exchanger of claim 10, it is characterized in that 11, shutter has plural facet (50).

12, according to the ripple interlayer that is used for heat exchanger of claim 11, it is characterized in that facet departs from certain angle in twos.

According to the ripple interlayer that is used for heat exchanger of claim 10, it is characterized in that 13, shutter has the facet (44,46) that extends on both sides, the plane of wall (P) respectively.

14, according to the ripple interlayer that is used for heat exchanger of claim 13, it is characterized in that, with two facets (44,46) separately with the arrowband (48) that extends in a plane (P) at described wall.

According to the ripple interlayer that is used for heat exchanger of one of claim 1-14, it is characterized in that 15, wall (14) comprises at least two groups (34) shutters (24).

According to the ripple interlayer that is used for heat exchanger of claim 15, it is characterized in that 16, each shutter (24) of a shutter group is identical.

17, according to the ripple interlayer that is used for heat exchanger of claim 15, it is characterized in that one

Each shutter of shutter group belongs to two different types (24 ₁, 24 ₂), they are arranged alternately, a shutter (24 in first type ₁) the inclination angle from the value α ₁The value of changing to β ₁, a shutter (24 in second type ₂) the inclination angle from the value α ₂The value of changing to β ₂

18, according to the ripple interlayer that is used for heat exchanger of claim 17, it is characterized in that angle β ₁And α ₂Be zero, and angle α ₁And β ₂Equate and be not equal to zero.

19, according to the ripple interlayer that is used for heat exchanger of claim 17, it is characterized in that angle α ₁And β ₂Be zero, and angle β ₁And α ₂Equate and be not equal to zero.

According to the ripple interlayer that is used for heat exchanger of claim 15, it is characterized in that 20, each shutter of a shutter group belongs to three different types (24 ₁, 24 ₂, 24 ₃), they repeat to be provided with.

According to the ripple interlayer that is used for heat exchanger of one of claim 1-20, it is characterized in that 21, each wall of sheet material (14) is parallel to each other, they are connected in twos with square pleat (16).

22, according to the ripple interlayer that is used for heat exchanger of one of claim 1-20, it is characterized in that, each wall of sheet material (14) is connected in twos with sinusoidal pleat (16).

23, a kind of heat exchanger, this heat exchanger comprises the tube bank of a parallel pipe (12), and a plurality of ripple interlayers (10) of one of claim 1-22, these interlayers are arranged between each pipe of tube bank, and are fixed on the pipe by their pleats (16) separately.