CN101598505A

CN101598505A - The heat exchanger of big refrigerating capacity

Info

Publication number: CN101598505A
Application number: CNA2009101497720A
Authority: CN
Inventors: 西尔万·莫罗; 弗朗索瓦·巴森
Original assignee: Valeo Systemes Thermiques SAS
Current assignee: Valeo Systemes Thermiques SAS
Priority date: 2008-03-25
Filing date: 2009-03-25
Publication date: 2009-12-09
Anticipated expiration: 2029-03-25
Also published as: ES2626802T3; FR2929388A1; JP2009236478A; FR2929388B1; EP2105693B1; CN101598505B; EP2105693A1

Abstract

The present invention relates to a kind of heat exchanger (1) of big refrigerating capacity, it is especially for the evaporimeter of air conditioning for automobiles circulation, limit by a plurality of first elementary paths (13,14) combinatorial path that is used for first fluid of Gou Chenging and the combinatorial path that is used for second fluid that constitutes by a plurality of second elementary paths, described first and second elementary paths are alternately arranged along first direction, so that the wherein adjacent elementary path thermo-contact of at least one of each elementary path of a kind of fluid and another fluid, each first elementary path (13,14) has the structure of extending along second direction, wherein, first elementary path (13,14) constitute by pipe (2), the wall thickness of at least one wall of described pipe is less than or equal to 0.3mm, preferably between 0.24mm-0.28mm.

Description

The heat exchanger of big refrigerating capacity

Technical field

The field that the present invention relates to is two kinds of heat exchangers between fluid, and this heat exchanger particularly cools off cooling fluid with air.This heat exchanger is used for field of air conditioning, for example the field of air conditioning of automobile.

Background technology

Heat exchanger, it limits combinatorial path that is used for first fluid that is made of a plurality of first elementary paths and the combinatorial path that is used for second fluid that is made of a plurality of second elementary paths especially for the evaporimeter of air conditioning for automobiles circulation.First and second elementary paths alternately arrange along first direction, so that wherein at least one adjacent elementary path thermo-contact of each elementary path of a kind of fluid and another fluid.Especially, first fluid is cooling fluid or heat transport fluid, and second fluid is an air.

Each first elementary path be configured as " U " shape, two branch extends along second direction, and staggers with respect to another ground one of third direction.First, second is vertical substantially to each other with third direction.Normally, each first path is made of pipe, and pipe is by assembling between bending, extruding or plate, or forms by other any mode that obtains the circulating element of heat exchanger.

Each first path is communicated with each collecting region, so that set up the combinatorial path that extends to the outlet collecting region from the inlet collecting region of heat exchanger.

The inlet face of each second elementary path along third direction from heat exchanger extends to exit face.Each second path is made of the heat exchange interlayer that is formed in the metal tape with shutter usually, thereby helps the heat exchange between the first fluid and second fluid.

Between two collecting regions that belonging to two rows, arrange at least one transition passage, so as with first elementary path that these two collecting regions directly are communicated with in, the fluid edge direction identical with third direction flows to another branch from a branch.Like this, with first elementary path that these two collecting regions directly are communicated with in, fluid flows to another branch along the direction identical with air-flow direction from a branch.

Especially, this heat exchanger learns that in french patent application FR 2 825 791 this application has been introduced a kind of evaporimeter that is used for the air conditioning for automobiles circulation.

Require to occur a kind of high performance heat exchanger now.The present invention is intended to improve existing situation.

Summary of the invention

Heat exchanger, evaporimeter especially for the air conditioning for automobiles circulation, limit combinatorial path that is used for first fluid that constitutes by a plurality of first elementary paths and the combinatorial path that is used for second fluid that constitutes by a plurality of second elementary paths, first and second elementary paths alternately arrange along first direction, so that wherein at least one adjacent elementary path thermo-contact of each elementary path of a kind of fluid and another fluid.Each first elementary path is the structure of extending along second direction.According to the present invention, first elementary path is made of pipe, and the wall thickness of at least one wall of described pipe is less than or equal to 0.3mm.

We get the raising of auto levelizer refrigeration work consumption, the air themperature that is cooled evenly, the minimizing of heat exchanger quality.In a preferred Implementation Modes, the wall thickness of elementary path is between 0.24mm-0.28mm.

Because this layout, the heat exchange between first and second fluids is effective especially.

Especially, according to multiple modified embodiment, pipe and at least one heat exchange interlayer couple, this heat exchange interlayer along the height of first direction less than 5mm, preferably between 3mm-4.5mm.

According to a particularly advantageous choice, pipe limits the circulation line of first fluid, and the flow diameter of this pipeline preferably between 0.85mm-1.10mm, is preferably between the 0.89mm-1.07mm less than 1.2mm.

In addition, the wall thickness of pipe is less than or equal to 0.27mm, and the internal height of pipe, is preferably between the 1mm-1.3mm less than 1.5mm along first direction.

First elementary path is arranged to two-layer along third direction.First, second is vertical substantially to each other with third direction.The inlet face of each second elementary path along third direction from heat exchanger of second fluid extends to exit face.First elementary path of one deck is along first direction staggering with respect to another layer.The inlet face of second fluid is near the second layer of first elementary path.The exit face of second fluid is near the ground floor of first elementary path.

Each first elementary path feeds collecting region.Collecting region links to each other with first elementary path of one deck.Collecting region with one deck is communicated with in twos, thereby sets up the combinatorial path that extends to the outlet collecting region from the inlet collecting region, and these two collecting regions are positioned on the relative layer of heat exchanger along third direction.According to a modified embodiment, at least one transition region is set belonging between two two-layer collecting regions, make first fluid flow to the second layer from ground floor.

Especially, the area of transition region is preferably between the 65%-75% between the 60%-80% of the area of first elementary path of the 3rd path.

Preferably, with the transition region that convexes to form of the plate of radius between 8.5mm-10mm.

Description of drawings

Will more be expressly understood the present invention by the detailed description of reading some Implementation Modes, these Implementation Modes are only described as an example with reference to the accompanying drawings, wherein:

Fig. 1 is the perspective view of heat exchanger of the present invention;

Fig. 2 is the schematic diagram of fluid mobile example in heat exchanger of the present invention;

Fig. 3 is the transverse sectional view of a pipe of the present invention;

Fig. 4 is the side view of a pipe of the present invention;

Fig. 5 is the partial sectional view along the V-V direction of Fig. 4;

Fig. 6 is the partial sectional view along the VI-VI direction of Fig. 4;

Fig. 7 is the detailed cross sectional view along the VII-VII direction of Fig. 4;

Fig. 8 is the detail view of Fig. 7;

Fig. 9 is the side view of tube sheet of the present invention;

Figure 10 is at two adjacent tube sheets at collecting region place cutaway view along the X-X direction of Fig. 9 among the present invention;

Figure 11 is the partial sectional view that comprises the heat exchanger of pipe, and this pipe has two groups of heat exchange interlayers; With

Figure 12 is the detail view of heat exchange interlayer of the present invention.

The specific embodiment

Can see that as these accompanying drawings heat exchanger 1 comprises pipe 2 and heat exchange interlayer 44 and 45 that stack.In this can be referring to document FR 2 747 462, herein as a reference in conjunction with its content.Each pipe 2 is formed by two

boards

3 and 4, and this two boards is formed by the metal tape of punching press grooving basin shape respectively.

Plate

3 and 4 is mutually the same, and one of their groove is facing to another, in Fig. 3 one up, one down, that is to say along one in x-x direction up, one down.Each

plate

3 and 4 has periphery 5.Form this two boards 3 of

pipe

2 and 4 periphery 5 convection cells and be assembled with each other hermetically, for example by welding assembly, thus the internal capacity of qualification pipe 2.Pipe 2 is formed for two first

elementary paths

13 and 14 of first fluid, cooling fluid that this first fluid particularly circulates or the heat transport fluid that circulates in the refrigerating circuit of tide of motorism machine in air conditioner loop of automobile.

Each pipe 2 has two

end regions

6 and 7, and these two zones are distinguished down in Fig. 1 and, be that is to say along z-z to be directed upwardly with down that these two zones are limited by the press depth that forms in

plate

3 and 4 up.Shown in detailed in Fig. 3 cutaway view,

end regions

6 and 7 upper and lowers with respect to heat exchanger 1 only account for the seldom part of its height, and all the other height are occupied by the less body region of thickness.The end regions 6 of each pipe and 7 internal capacity are extended to lower end area 7 from upper area 6 the zone 8 that is tightly connected is separated from each other.The zone that is tightly connected 8 is arranged between each fluid passage, along the y-y direction

elementary path

13 and 14 is limited to a half width of pipe 2, this join domain 8 extend to along the z-z direction pipe 2 lower end 7 near.And for example shown in Figure 10, the adjacent plate 3 and plate 4 end 9 with them in

end regions

6 and 7 that belong to two different pipes 2, support each other, shown in Figure 11 and 12, in body region, heat exchange interlayer 44 and 45 are equipped with in this two boards certain interval that is separated from each other in this interval.Heat exchange interlayer 44 and 45 limits second elementary path that is used for air to be cooled, and second elementary path is according to the air direction of arrow shown in Fig. 1 and 2 and the plane parallel of Fig. 4, just along y-y direction and this plane parallel.Therefore at least one in pipe 2 and the heat exchange interlayer 44 and/or 45 couples.

The end 9 that contacts with each other, welded together.With at least a portion that opening 10 passes the end 9, make between the corresponding internal capacity to interconnect.In some openings 10 seal diaphragm 16 is set, the sealing dividing plate is used to stop up these openings, to limit the special loop that is called compound path.

Heat exchanger 1 comprises the fluid intake 11 of insertion and the fluid issuing 12 that inserts, and entrance and exit is on the outer surface of end regions 6 of a pipe 2 at an end place of heat exchanger 1, that is to say the end along the x-x direction.Insert 11 can have different diameters with 12.

Insert

11 and 12 limits narrow side (the un petit that protrudes in heat exchanger 1

) inlet or outlet.

The same side that fluid intake insert 11 among the embodiment that describes as an example among Fig. 1 and fluid issuing insert 12 are in heat exchanger 1.But the present invention also comprises other arrangement, wherein these inserts is arranged on the opposite end of same end regions, or is arranged on the two ends of two end regions of heat exchanger the same side, also can be arranged on the opposite end of two end regions.These layouts depend on the seal diaphragm 16 that is arranged in some opening 10.

Referring to Fig. 2, what this illustrated is the example that fluid circulates in heat exchanger 1 of the present invention.The cooling fluid that enters heat exchanger 1 by fluid intake insert 11 is distributed between the internal capacity in zone 6 by collecting region 17, and these internal capacities are included among Fig. 1 along between an end of the heat exchanger 1 on the right side of x-x direction and the dividing plates 16 with two blocks of plates 3 that do not have an

opening

10 and 4 formation.From collecting region 17, fluid flows through the elementary path 13 that pipe 2 limits abreast, and these pipes have defined these elementary paths.Elementary path 13 near fluid intake face 15 forms first path 31, and leads to second collecting region 18 that the interior zone by the volume 7 of the identical pipe 2 that forms collecting region 17 forms.

Collecting region 18 is communicated with the 3rd collecting region 19 by opening 10, and the 3rd collecting region links to each other with the 4th collecting region 20 by the elementary path that forms alternate path 32, and dividing plate 16 separates the 4th collecting region and collecting region 17.Collecting region 20 is communicated with the 5th collecting region 21 by opening 10, the 5th collecting region links to each other with the 6th collecting region 22, dividing plate 16 separates the 6th collecting region and collecting region 19, and the connection between the 5th collecting region and the 6th collecting region realizes by the elementary path that forms the 3rd path 33.

Therefore, all branches that the cooling fluid that enters by insert 11 passes through fluid intake face 15 1 sides, enter the 6th collecting region 22 and the 7th collecting region 23 then, utilize the passage 41 shown in Fig. 6 and 7 to flow, will introduce passage 41 in detail in conjunction with these accompanying drawings afterwards according to direction with the air flowing opposite.

Cooling fluid flows into the 8th collecting region 24 by the elementary path 14 that forms four-way road 34 from the 7th collecting region 23 then, moves along first direction 51 or x-x direction again, is passed to the 9th collecting region 25 by opening 10.Cooling fluid flows into five-way road 35, and links to each other with the tenth collecting region 26 by elementary path 14, and the tenth collecting region separates with dividing plate 16 and collecting region 23.The tenth collecting region 26 is communicated with the 11 collecting region 27 by opening 10.Cooling fluid flows into the 6th path 36, and links to each other with the 12 collecting region 28 by elementary path 14, and the 12 collecting region separates with dividing plate 16 and collecting region 25.Fluid enters fluid issuing insert 12 then.

On structure, heat exchanger 1 comprises a plurality of pipes 2, and these pipes and near passage and dividing plate are much at one.From hydrokinetic viewpoint, interchanger 1 forms two-layer, is respectively the ground floor and the second layer that are called " upstream " and " downstream ", and each layer comprises that a plurality of paths, each path comprise a plurality of first elementary paths.Pipe 2 limits one first elementary path of upstream layer and one first elementary path of downstream layer.The path shape of first fluid be two stacked coil-like.Because cooling fluid is at first promptly flowing along the downstream of air-flow direction along the y-y direction, flows at the upstream side along air-flow direction then, so the chilling temperature that obtains at the air outlet slit place is than lower in the past.

Cooling fluid is near the collecting region the insert 11 17 during downwards until the bottom of interchanger, to the 31 generation effects of first path.Therefore cooling fluid is along direction 52, promptly along the z-z direction, along the high flow of heat exchanger 1, and the opening of offering by pipe 2 bottoms 10, everything is all limited by the dividing plate 16 of the close upstream face 15 that is arranged on heat exchanger 1 bottom.But also the dividing plate 16 that is used to limit collecting region 17 and collecting region 20 is housed.Cooling fluid rises again by path 32 then, until arriving collecting region 20.Cooling fluid by opening 10 from collecting region 20 to collecting region 21, descending by the 3rd path 33 then.Cooling fluid moves to downstream face 29 from upstream face 15, rises again by four-way road 34, until arriving collecting region 24 again.Cooling fluid when the opening 10 from collecting region 24 to collecting region 25, go downwards to collecting region 26 by five-way road 35 then.Cooling fluid flows to collecting region 27 at sidepiece from collecting region 26 then, flows to the 6th path 36 again, and cooling fluid rises to collecting region 28 again by the 6th path.Dividing plate 16 is spaced apart from each other collecting

region

25 and 28.

Another dividing plate 16 is arranged on the bottom of heat exchanger, causes

path

34 and 35 short circuits so that prevent fluid from flowing directly to the heat exchanger bottom.Can make the mutual layout of these dividing plates 16 between each path realize optimization.Can consider to make each path that a plurality of elementary paths are arranged, elementary path is routed to the 3rd path from first to be increased, and is routed to the 6th path from the 3rd again and reduces.First with the quantity of the elementary path of the 6th path can be identical.Thus, second is identical respectively with the quantity of the elementary path of the five-way road and third and fourth path.Therefore, dividing plate 16 15 29 can come into line to the back from the front.

The embodiment that describes in conjunction with Fig. 1 and 2 is the heat exchanger of six paths.But, the invention is not restricted to this heat exchanger.In fact, according to the layout and the quantity of opening 10 and dividing plate 16, can make number of passages greater or less than six heat exchanger.It for example can be heat exchanger with four or eight paths.Similarly, the invention is not restricted to the heat exchanger that number of passages is an even number.Within the scope of the present invention, can consider that fully number of passages is the heat exchanger of odd number.

More particularly, the cutaway view of doing along the main center plane of pipe 2 substantially as shown in Figure 3, this plane is perpendicular to second direction z-z or direction 52.According to an Implementation Modes of the present invention, between

plate

3 and 4, be provided with liner 40.Can be with making liner 40, for example aluminium alloy with

plate

3 and 4 identical materials.The thickness of liner 40 is less than 0.1mm, preferably between 0.04-0.08mm.Therefore, flow regime the best of cooling fluid, also best to the heat transfer of the wall of

plate

3 and 4.

Liner 40 can have a plurality of longitudinal ripples along the elementary path direction.Ripple can be trapezoidal shape.The pitch of ripple can be between 1-1.4mm.The trapezoidal big end, can be between the 120%-140% of pitch, preferably between the 128%-140% of pitch.The handle of ripple can be between the 60%-80% of pitch, preferably between the 60%-72% of pitch.Bending radius between trapezoidal each wall is between 0.15-0.25mm.

The thickness that forms the aluminium alloy plate of

plate

3 and 4 can be less than 0.3mm, preferably between 0.24-0.28mm.Preferably utilize thickness to be less than or equal to the plate of 0.27mm, for example equal the plate of 0.27mm.Length along heat exchanger 1 can be less than 1.5mm, preferably between 1-1.3mm according to the internal height of the pipe 2 of x-x direction formation elementary path.The groove of the pipeline that is limited by liner 40 and

adjacent panels

3 or 4 diameter that surges can preferably between 0.85-1.10mm, be preferably between the 0.89mm-1.07mm less than 1.2mm.It is the pipeline of 5-10 that can there be quantity in a branch of an elementary path.

The invention is not restricted to be roughly trapezoidal liner.Within the scope of the invention, can consider sinusoidal or triangle or build the liner of crenelation shape.

According to a unshowned modification of the present invention, pipe 2 can not have liner.In addition,

plate

3 and 4 can have also projection or the protuberance that is known as ' ripples (dimples) ', and this can promote the stirring (brassage) of first fluid.

Shown in Figure 4 is the front view of plate 3 (being similar to plate 4).Shown plate is used for third and fourth path 33 and 34.Each time collecting region links to each other by path 41.

Fig. 5 is that what illustrate is the collecting region that does not have path 41 along the cutaway view on the plane parallel with the section of Fig. 3.It can be to go up collecting region, also can be between first path and the alternate path or the collecting region between five-way road and the 6th path.A dividing plate 16 that illustrates is used for the end elementary path, so just can stop up an end of collecting region or following collecting region, when the such dividing plate of needs separates adjacent two collecting regions, also can stop up and the collecting region 24 of

insert

11 and 12 opposition sides and 25 end.

Equally, Fig. 5 is the cutaway view of doing along the V-V line of Fig. 4.Fig. 6 is the cutaway view of doing along the VI-VI line of Fig. 4.In Fig. 6, as can be seen passage 41 be set at can make front 15 lead to next 29, promptly lead between each time collecting region of path 34 from path 33.

More particularly, as shown in Figure 7, this figure is the cutaway view of doing along the VII-VII line of Fig. 6, and in height this passage 41 staggers with corresponding collecting region down.This layout can realize best mechanical resistance, presses in particularly keeping.Therefore, the height that passage 41 can stagger is between 1.2-4.2mm, and it is oriented the main direction of the elementary path of z-z direction, in other words collecting region direction up.Owing to the welding contact-making surface increase of the plate between the lower end that is in passage 41 and

plate

3 and 4, so obtain high pressure resistance.On one side relative with the lower end, owing to be welded together to form the be tightly connected zone 8 and the liner 40 in relative compact air channel (maillage), so can keep-up pressure.

According to a unshowned embodiment, can in last collecting region, form passage 41 similar passages with collecting region.In this case, this passage in height departs to corresponding collecting region down.

Particularly, as shown in Figure 8, that makes on the plate 3 and/or 4 of passage 41 by pipe 2 convexes to form.The radius ' a ' of the projection of formation passage 41 is between 8.5-10mm.Projection comprises that also radius is the connection groove ' b ' of 1-5mm.The degree of depth of half passage 41 ' d ' is less than the degree of depth of following collecting region, so that the reservation groove that can discharge condensate liquid 42 as shown in figure 10.The diameter of groove 42 is about 1-5mm.

Referring now to Fig. 9,, this figure is the partial elevation view of plate 3, and passage 41 can make between two collecting regions of same pipe 2 and be communicated with.

Shown in Figure 10 is the two

boards

3 and 4 that belongs to adjacent elementary path.For example, the area of passage 41 can be the 60%-80% of the area of first elementary path 13 of the 3rd path 33, is preferably the 65%-75% of area of first elementary path 13 of the 3rd path 33.

In an Implementation Modes, elementary path along the thickness of heat exchanger 1 length less than 1.5mm, preferably between 1-1.3mm.

In an additional modification Implementation Modes, the inside dimension of collecting region is less than 45mm, preferably between 35-40mm.

Shown in Figure 11 and 12, an elementary path is linked to each other with 45 with heat exchange interlayer 44, this heat exchange interlayer extends along the flow direction of air to be cooled, promptly along extending with the y-y direction of the mobile direction crosscut of cooling fluid.Can heat exchange interlayer 44 and 45 be respectively fixed on the

plate

3 and 4 of elementary path with welding.Heat exchange interlayer 44 and 45 can equal the length of

plate

3 and 4 substantially along the length of air-flow direction.The thickness of plate can be between 0.04-0.08mm.The shape of ripple is roughly rectangle, and rectangle has the circular arc limit of extending along air-flow direction.Height ' e ' when each rectangle contacts with plate 3 and/or 4 flows direction between 0.45-0.6mm along cooling fluid.Waveform along the width ' f ' of first direction between 4.1-4.3mm.Waveform along the pitch ' fp ' of third direction between 1.2-1.3mm.

In addition, heat exchange interlayer 44 and 45 has blind window 46 and 47, and described shutter is positioned at the both sides on the plane of a branch (branche) that forms ripple.Shutter 46 and 47 has and replaces opposite shape.Blind window 46 and 47 flows the height of direction between 0.3-0.45mm along cooling fluid.Use the purpose of blind window 46 and 47 to be to promote first fluid and the normally heat exchange between second fluid of air.

In an Implementation Modes, each elementary path has the cross section of extension along third direction.

These heat exchange interlayers extend to second elementary path with protruding outer wall from first elementary path.Collecting region can be tubular.The circulation of first fluid in first elementary path of pipe can be carried out along opposite direction.

For in the first of the upstream side of second fluid flow direction with for the even number path that can distribute of the second portion in the downstream of second fluid flow direction.A path can reassemble the first a plurality of adjacent elementary path on the identical flow direction with first fluid.The quantity of the elementary path of path can increase earlier along the first fluid flow direction, reduces again.

In an Implementation Modes, the heat exchanger that is used for the air conditioning for automobiles circulation limits first fluid combinatorial path that is formed by a plurality of first elementary paths and the second combination of fluids path that is formed by a plurality of second elementary paths, and this heat exchanger is evaporimeter particularly.Be arranged alternately first and second elementary paths along first direction, for use in wherein each elementary path of a kind of fluid and at least one adjacent elementary path of one other fluid carry out thermo-contact.Each first elementary path has the structure of extending along second direction.At third direction, first elementary path is according to the two-layer setting of staggering each other.First, second is vertical substantially to each other with third direction.Each second elementary path extends to exit face along third direction from inlet face.First elementary path enters into collecting region separately, and these collecting regions are arranged to two rows corresponding to two-layer.

Collecting region is communicated with in twos, so that set up the combinatorial path that extends to the outlet collecting region from the inlet collecting region, these two collecting regions are arranged in the opposite ends of a direction in heat exchanger.Between two collecting regions that belong to two rows respectively, at least one transition region is set, thus with first elementary path that described two collecting regions directly are communicated with in, first fluid flows to another elementary path along third direction from an elementary path.Between a collecting region of collecting region of the upstream face of second fluid flow direction and downstream face a transition region that forms passage is being set, described passage can allow the first fluid circulation.This passage can be by convexing to form in each plate that is arranged on each first elementary path.Therefore can produce the extremely thin heat exchanger of plate of first elementary path, for example thickness preferably is less than or equal to 0.27mm less than 0.3mm.Be that 30 degree, relative humidity are 60% o'clock in air themperature thus, cooling capacity improves about 6%.Therefore, for air mass flow be the 250-600 kilogram/hour, air themperature descend approximately 1 the degree.

Heat exchanger of the present invention is used in particular in automobile heating, ventilation and/or the air-conditioning equipment, in the heat exchanger integrated equipment manufacture process of automobile.Also can be the radiator of cooling motor, the radiator of driving cabin heater unit, condenser, gas cooler or air conditioner loop evaporimeter, supercharging air cooler etc.

Certainly, the invention is not restricted to above-mentioned Implementation Modes, these Implementation Modes only provide as an example, and within the scope of the present invention, those skilled in the art can consider to comprise other modification, particularly above-mentioned all different Implementation Modes are made up.

Claims

1, a kind of heat exchanger (1); It is especially for the evaporimeter of air conditioning for automobiles circulation; Limit by a plurality of first elementary paths (13; 14) combinatorial path that is used for first fluid that consists of and the combinatorial path that is used for second fluid that is consisted of by a plurality of second elementary paths; Described first and second elementary paths are alternately arranged along first direction; So that wherein at least one adjacent elementary path thermo-contact of each elementary path of a kind of fluid and another fluid; Each first elementary path (13; 14) has the structure of extending along second direction

It is characterized in that first elementary path (13,14) is made of pipe (2), the wall thickness of at least one wall of described pipe is less than or equal to 0.3mm, preferably between 0.24mm-0.28mm.

2, according to the heat exchanger of claim 1, wherein, pipe (2) couples with at least one heat exchange interlayer (44,45), and this heat exchange interlayer, is preferably between the 3mm-4.5mm less than 5mm along the height of first direction.

3, according to the heat exchanger of claim 2, wherein, the thickness of slab of heat exchange interlayer (44,45) is between 0.04-0.08mm.

4, according to the heat exchanger of claim 2 or 3, wherein, heat exchange interlayer (44,45) has ripple, and the height of ripple (e) is between 0.45-0.6mm.

5, according to the heat exchanger of claim 4, wherein, the ripple of heat exchange interlayer (44,45) along the width (f) of first direction between 4.1-4.3mm.

6, according to the heat exchanger of claim 4 or 5, wherein, heat exchange interlayer (44,45) has pitch (fp) between 1.2-1.3mm along third direction.

7, according to the heat exchanger of above-mentioned arbitrary claim, wherein, pipe (2) limits the circulation line of first fluid, and the flow diameter of this pipeline is preferably between the 0.89mm-1.07mm less than 1.2mm.

8, according to the heat exchanger of above-mentioned arbitrary claim, wherein, the wall thickness of pipe (2) is less than or equal to 0.27mm.

9, according to the heat exchanger of above-mentioned arbitrary claim, wherein, the internal height of pipe (2), is preferably between the 1mm-1.3mm less than 1.5mm along first direction.

10, according to the heat exchanger of above-mentioned arbitrary claim, wherein, two paths link to each other by being arranged on two passages (10) between the collecting region, and the wall of described passage is formed by the plate that limits described first elementary path (3,4).

11, according to the heat exchanger of above-mentioned arbitrary claim, wherein, first elementary path (13,14) is arranged to first and second two-layer along third direction.

12, according to the heat exchanger of claim 11, wherein, each first elementary path enters in the collecting region (17 to 28) that links to each other with first elementary path (13,14), described collecting region is communicated with in twos, thereby sets up the combinatorial path that extends to outlet collecting region (28) from inlet collecting region (17).

13, according to the heat exchanger of claim 12, wherein, inlet collecting region (17) and outlet collecting region (28) lay respectively in the ground floor and the second layer of heat exchanger.

14, according to the heat exchanger of one of claim 11-13, wherein, first elementary path (13,14) of one deck staggers with respect to another ground along one of first direction.

15, according to the heat exchanger of one of claim 11-14, wherein, between two collecting regions (22,23) that belong to two rows respectively, be provided with at least one transition region (41), so that make first fluid flow to the second layer from ground floor.

16, according to the heat exchanger of claim 15, wherein, the area of transition region (41) is preferably between the 65%-75% between the 60%-80% of the area of first elementary path of the 3rd path (33).

17, according to the heat exchanger of claim 15 or 16, wherein, at least one first elementary path that is arranged on each end of heat exchanger (1) along first direction does not have transition region (41).

18, according to the heat exchanger of one of claim 15-17, wherein, transition region (41) is convexed to form by described plate, and the radius of projection is between 8.5mm-10mm.

19, according to the heat exchanger of one of claim 15-18, wherein, transition region (41) staggers with respect to the opposite collecting region of adjacent collecting region towards same path along second direction.

20, according to the heat exchanger of above-mentioned arbitrary claim, wherein, each first elementary path (13,14) comprises liner (40).

21, according to the heat exchanger of claim 20, wherein, liner forms the basic trapezoidal pipeline that is.

22, according to the heat exchanger of claim 20 or 21, wherein, the thickness of liner (40) is less than 0.1mm, preferably between 0.04mm-0.08mm.

23, according to the heat exchanger of one of claim 20-22, wherein, the pitch of liner (40) is between 1mm-1.4mm.

24, according to the heat exchanger of one of claim 21-23, wherein, the big end of liner (40), is between the 120%-140% of pitch, preferably between the 128%-140% of pitch.

25, according to the heat exchanger of one of claim 21-24, wherein, the handle of liner (40) is between the 60%-80% of pitch, preferably between the 60%-72% of pitch.

26, according to the heat exchanger of one of claim 21-25, wherein, the bending radius of liner (40) is between 0.15mm-0.25mm.

27, according to the heat exchanger of above-mentioned arbitrary claim, wherein, two of the same row in two-layer first elementary paths form by two boards (3,4), described plate fits together by their limit, and the edge second direction of described plate is extended in the middle of described plate.