DE102012109346B4 - Internal heat exchanger with external manifolds - Google Patents

Abstract

A heat exchanger (10) consisting of: a plurality of first plate groups (12) including an upper plate (20), a lower plate (22) and a first flow path (28) between the first plate (20) and the second Plate (22) of the first plate group (12) is formed to collect a first working fluid therein, the first plate (20) and the second plate (22) each having a first surface (32), a flat second surface (34) and include at least one working fluid port (36, 38) formed therein, and wherein the first plate (20) and the second plate (22) of the respective first plate groups (12) are arranged so that the first surfaces (32) face each other and the first working fluid connections (36) of the first plate groups (12) are lined up in such a way that they form a first external collecting tube (72), the first external collecting tube (72) being in liquid communication t is the first flow path (28) for collecting the first working fluid; and a plurality of second plate groups (14) including an upper plate (24), a lower plate (26) and a second flow path (30) which is between the first plate (24) and the second plate (26) of the second plate groups ( 14) is formed to collect a second working fluid therein, each of the first plate (24) and the second plate (26) of the second plate groups (14) having a first surface (52), a flat second surface (54) and at least a second working fluid port (56, 58) formed therein, and wherein the first plate (24) and the second plate (26) of the respective second plate groups (14) are arranged so that the first surfaces (52) face each other and the second Working fluid connections (56, 58) of the second plate groups (14) are lined up in such a way that they form a second external collecting pipe (84), the second external collecting pipe (84) being in liquid form communication with the second flow path (30) for collecting the second working liquid, and the first plate groups (12) are interleaved with the second plate groups (14) so that the flat surfaces (32) of the first and second plates (20, 22) of the first plate groups (12) touch the flat surfaces (54) of the respective first and second plates (24, 26) of the second plate group (14), at least one baffle (75, 85) in at least one of the first and second working fluid influence pipes (72, 82) and the first and second working fluid outflow pipe (74, 84) is attached to form a multi-flow circuit in the heat exchanger (10).

Description

FIELD OF THE INVENTION

The present invention relates to a heat exchanger which has at least one external header pipe.

GENERAL PRIOR ART

Plate heat exchangers are used to transfer thermal energy between heat-exchanging working fluids. At least two heat-exchanging working fluid flows flow through separate flow channels between the heat exchanger plates in the plate heat exchanger. The heat exchanger plates are normally arranged one above the other and form part of the plate heat exchanger. The separate flow channels are typically defined by working fluid ports formed in the heat exchanger plates and flow paths formed between the plates.

Heat transfer between the working fluid flows takes place in the area of a central heat transfer part of the heat exchanger plates. In order to transfer thermal energy, a first flow of working fluid flows through the connections on one side of the heat exchanger into a multiplicity of first flow paths which are formed by alternating heat exchanger plates. At the same time, a second flow of working fluid flows through the connections on the opposite side of the heat exchanger into a multiplicity of second flow paths, which are likewise formed by the alternating heat exchanger plates and run separately from the first flow paths. In this way, heat is exchanged between the two working fluid flows flowing in opposite directions through the heat exchanger.

In the DE 19 01 475 A describes a device for distributing a two-phase flow on plate heat exchangers, specifically the design of the distributor pipe, which connects the individual heat exchanger passages to one another in this type of heat exchanger.

In the KR 10 2007 0 005 831 A are described plate heat exchangers with heat exchange medium manifolds.

In the JP H09-292 193 A. becomes a heat exchanger and in the DE 11 2009 000 837 T5 describes a heat exchanger with charge air coolers such as those used for automobiles.

In the FR 2 454 075 A1 describes a heat exchanger for the production of clinically clean water with two liquid circuits.

In the US 5 884 696 A describes a heat exchanger for heat exchange between three different fluids.

It would be desirable to develop a heat exchanger that has an internal structure and at least one external manifold that can help prevent contamination of the working fluid and damage to the external systems while reducing costs and optimizing the manufacturability of the heat exchanger, regardless of the orientation the pipe, the working fluid circuit and the size of the heat exchanger.

SUMMARY OF THE INVENTION

In accordance with and in accordance with the present invention, a heat exchanger with an internal structure and at least one external manifold has surprisingly been discovered, which prevents contamination of the working fluid and damage to the external systems and at the same time reduces costs and optimizes the manufacturability of the heat exchanger.

In one embodiment, the heat exchanger includes: a plurality of first plate groups, including an upper plate, a lower plate, and a first flow path formed between the first plate and the second plate of the first plate group to trap a first working fluid therein, each the first plate and the second plate have a first surface, a substantially flat second surface, and at least one formed therein Working fluid port included, and wherein the first plate and the second plate of the respective first plate groups are arranged so that the first surfaces face each other and the first working fluid ports of the first plate groups are substantially lined up to form a first external manifold, the first external header is in fluid communication with the first flow path to collect the first working fluid therein; and a plurality of second plate groups, including an upper plate, a lower plate, and a second flow path formed between the first plate and the second plate of the second plate groups to collect a second working fluid therein, each of the first plate and second plate of the second plate groups include a first surface, a substantially planar second surface, and at least a second working fluid port formed therein, and wherein the first plate and the second plate of the respective second plate groups are arranged so that the first surfaces face each other and the second Working fluid ports of the second plate groups are substantially strung together to form a second external manifold, the second external manifold in fluid communication with the second flow path to collect the second work liquid is located therein, and the first plate groups are interleaved with the second plate groups, so that the substantially flat surfaces of the respective first and second plates of the first plate groups essentially touch the substantially flat surfaces of the respective first and second plates of the second plate group, at least a baffle is attached in at least one of the first and second working fluid inflow pipes and the first and second working liquid outflow pipe to form a multi-flow circuit in the heat exchanger.

In another embodiment, a heat exchanger includes: a plurality of first plate groups, including an upper plate, a lower plate, and a first flow path formed between the first plate and the second plate of the first plate group to trap a first working fluid therein, wherein the first flow path includes at least one turbulator, and wherein each of the first plate and the second plate of the first plate groups include a first surface, a substantially flat second surface, and at least one working fluid port formed therein, and wherein the first plate and the second plate each the first plate groups are arranged such that the first surfaces are opposite one another and the first working fluid connections of the first plate groups are lined up in such a way that they form a first external collecting pipe, the first external collecting pipe being in one another Fluid communication with the first flow path for trapping the first working fluid therein; and a plurality of second plate groups including an upper plate, a lower plate, and a second flow path formed between the first plate and the second plate of the second plate groups to collect a second working fluid therein, the second flow path including at least one turbulator and wherein each of the first plate and the second plate of the second plate groups include a first surface, a substantially flat second surface, and at least a second working fluid port formed therein, and wherein the first plate and the second plate of the respective second plate groups are arranged so that the first surfaces face each other and the second working fluid connections of the second plate groups are essentially lined up in such a way that they form a second external collecting tube, the second external collecting tube becoming liquid Unication with the second flow path for collecting the second working liquid therein, and the first plate groups are nested with the second plate groups, so that the substantially flat surfaces of the first and second plates of the first plate groups, the substantially flat surfaces of the first and second plates substantially touch the second plate group, at least one baffle plate being attached in at least one of the first and second working fluid inflow pipes and the first and second working liquid outflow pipe, in order to form a multi-flow circuit in the heat exchanger.

list of figures

• 1 einen Wärmetauscher aus der Seitenperspektive darstellt, bei dem gemäß der vorliegenden Erfindung eine Vielzahl von ersten Plattengruppen mit einer Vielzahl von zweiten Plattengruppen verschachtelt sind;
• 2 eine Querschnittsseitenansicht des in 1 dargestellten Wärmetauschers ist, die entlang Linie 2-2 in 1 verläuft;
• 3 die Seitenansicht eines Wärmetauschers darstellt, bei dem gemäß der vorliegenden Erfindung eine Vielzahl von ersten Plattengruppen mit einer Vielzahl von zweiten Plattengruppen verschachtelt sind, und der hier mit alternativen Plattengruppen gezeigt wird;
• 4 die Explosionsdraufsicht einer der Plattengruppen des in 3 dargestellten Wärmetauschers ist, wobei jede der Plattengruppen eine obere und eine untere Platte hat;
• 5 die Draufsicht einer alternativen unteren Platte der ersten Plattengruppen darstellt, einschließlich einer Vielzahl von darauf geformten kugelförmigen Vorsprüngen;
• 6 die Draufsicht einer alternativen unteren Platte der ersten Plattengruppen darstellt, einschließlich einer Kombination aus getrennten, nach innen gebogenen, länglichen Rippen und getrennten, V-förmigen Rippen, die zusammen ein im Wesentlichen pfeilförmiges Muster bilden;
• 7 die Draufsicht einer alternativen unteren Platte der ersten Plattengruppen darstellt, einschließlich einer Vielzahl von alternierenden Untergliederungen, die eine Vielzahl von getrennten, parallel verlaufenden Leitblechen formen;
• 8 die Draufsicht einer alternativen unteren Platte der ersten Plattengruppen darstellt, einschließlich einer Vielzahl darauf geformter Lamellen;
• 9 einen Wärmetauscher aus der Seitenperspektive darstellt, bei dem gemäß der vorliegenden Erfindung eine Vielzahl von ersten Plattengruppen mit einer Vielzahl von zweiten Plattengruppen verschachtelt sind, und der hier mit einer alternativen Einlass- und Auslasskonfiguration dargestellt wird.

Those skilled in the art will readily appreciate the above-described as well as other advantages of the present invention in the following detailed descriptions of the preferred embodiment in conjunction with the accompanying drawings, in which:

• 1 4 shows a side view of a heat exchanger in which, according to the present invention, a plurality of first plate groups are interleaved with a plurality of second plate groups;
• 2 a cross-sectional side view of the in 1 heat exchanger shown, which is along line 2- 2 in 1 runs;
• 3 the side view of a heat exchanger, in which a plurality of first plate groups are nested with a plurality of second plate groups according to the present invention, and which is shown here with alternative plate groups;
• 4 the exploded top view of one of the plate groups of the in 3 heat exchanger shown, each of the plate groups having an upper and a lower plate;
• 5 the top view of an alternative lower plate of the first plate groups including a plurality of spherical projections formed thereon;
• 6 the top view of an alternative lower plate of the first plate groups includes a combination of separate, inwardly curved, elongated ribs and separate, V-shaped ribs which together form a substantially arrow-shaped pattern;
• 7 the top view of an alternative lower plate of the first plate groups, including a plurality of alternating Subdivisions that form a plurality of separate, parallel baffles;
• 8th the top view of an alternative lower plate of the first plate groups including a plurality of fins formed thereon;
• 9 4 shows a side view of a heat exchanger in which, according to the present invention, a plurality of first plate groups are nested with a plurality of second plate groups, and which is shown here with an alternative inlet and outlet configuration.

DETAILED DESCRIPTION OF THE INVENTION

The following detailed description and attached drawings describe and illustrate an embodiment of the invention. The description and drawings are intended to enable those skilled in the art to make and use the invention, and are in no way intended to limit the scope of the invention.

1-3 show a heat exchanger 10 according to the present invention. In the heat exchanger shown 10 is a heat exchanger for cold water production. However, it is understood that the heat exchanger 10 can represent any type of heat exchanger for the desired application, such as for automotive, commercial, residential, marine, aviation, and RV applications. The heat exchanger 10 contains a large number of first plate groups 12 that with a variety of second plate groups 14 are nested, arranged between a pair of end plates 16 . 18 in layered form.

The plate groups are for illustration purposes 12 . 14 and end plates 16 . 18 depicted rectangular, but it goes without saying that the plate groups 12 . 14 and end plates 16 . 18 can be designed in a different shape and size if desired. It is also understood that the plate groups 12 . 14 and end plates 16 . 18 can be made of any suitable material, such as metal. The width and length of the heat exchanger shown 10 depends on the shape and size of the plate groups 12 . 14 and the end plates 16 . 18 and the height of the heat exchanger 10 depends on the height and number of stacked plate groups 12 . 14 from. The number of stacked disk groups 12 . 14 is based on the desired cooling, heating and flow capacity of the heat exchanger 10 established. The heat exchanger shown 10 shows nine ( 9 ) first plate groups 12 and ( 9 ) second plate groups 14 , However, it is understood that additional or fewer plate groups may be desired 12 . 14 can be used as shown here. Other panels can be used as desired, such as barrier, corner, spacer, or transfer panels.

Each of the plate groups 12 has an upper plate 20 and a lower plate 22 , and each panel group 14 has a top plate 24 and a lower plate 26 , In certain embodiments, the plates are 20 . 22 of the first groups of plates 12 essentially identical as well as the plates 24 . 26 of the second plate groups 14 also essentially identical. In other embodiments, the plates are 20 . 22 of the first groups of plates 12 essentially identical to the plates 24 . 26 of the second plate groups 14 , Identical plates 20 . 22 . 24 . 26 simplify manufacturing processes and minimize tool costs in the production of the panels 20 . 22 . 24 . 26 , However, it is understood that at least one of the plates 20 . 22 . 24 . 26 can be substantially different if desired.

The top plate 20 and the bottom plate 22 the first group of records 12 are apart from each other to form a flow path 28 to collect a first working fluid (not shown) therein. The top plate is similar 24 and the bottom plate 26 of the second plate groups 14 apart from each other to create a flow path 30 to collect a second working fluid (not shown) therein. The working fluids can be of any type, such as fluids used in automotive applications, coolant (e.g. R12 . R134a etc.), coolant (e.g. ethylene glycol), engine oil, transmission oil, power steering fluid and the like. In an example that does not restrict the scope of protection, the first working liquid is a cooling liquid and the second working liquid is an engine or battery coolant. In certain embodiments, the flow paths are 28 . 30 essentially U-shaped and arranged in a counterflow configuration to one another in order to maximize the flow distribution of the working fluids and the heat transfer. However, it is understood that the flow paths 28 . 30 can have another suitable shape or size if desired. For example, the height, length and width of the flow paths 28 . 30 be modified to match the properties of the fluid as well as the distribution and pressure drop of the respective working fluids.

As in 4 shown each of the plates 20 . 22 , the first group of records 12 over a first surface 32 , a substantially flat second surface 34 and a pair of first working fluid ports formed therein 36 . 38 , The first surface 32 of the plates 20 . 22 can have an edge part 40 included, which is formed around its outer edge, and a divider 42 that between the fluid connections 36 . 38 is formed and laterally in the middle part of the plates 20 . 22 extends. The plates 20 . 22 lie on top of each other, with the first surfaces 32 face each other so that the outer edge of the panels 20 . 22 and their dividers 42 border on each other. The plates 20 . 22 can be attached in a substantially liquid-tight manner at any suitable location and by any means. For example, the top plates 20 to the respective lower plates 22 along the outward-running marginal ridges 44 . 46 of the respective plates 20 . 22 to be soldered as in 1-2 shown, or along the edge part 40 next to the sidebars 44 . 46 , as in 3 shown. The edge parts shown 40 and the dividers 42 define the flow path 28 and direct the flow F of the first working fluid through the first plate groups 12 ,

To each of the plates 24 . 26 belongs to a surface 52 , a substantially flat second surface 54 and a pair of first working fluid ports 56 . 58 , The first surface 52 of the plates 24 . 26 can have an edge part 60 included, which is formed around the outer edge thereof, and a divider 62 between the liquid connections 56 . 58 is formed and laterally in the middle part of the plates 24 . 26 extends. The plates 24 . 26 lie on top of each other, with the first surfaces 52 face each other so that the outer edge of the panels 24 . 26 and their dividers 62 border on each other. The plates 24 . 26 can be attached in a substantially liquid-tight manner at any suitable location and by any means. For example, the top plates 24 to the respective lower plates 26 along the outward-running marginal ridges 64 . 66 of the respective plates 24 . 26 to be soldered as in 1-2 shown, or along the edge part 60 next to the sidebars 64 . 66 , as in 3 shown. The edge parts shown 60 and the dividers 62 define the flow path 30 further and direct the current F the first working fluid through the second plate groups 14 ,

Each of the flow paths 28 . 30 can have at least one turbulator 70 included as in 5-8 shown. It is understood that others, from the turbulator 70 different turbulators can be used. The turbulator 70 causes fluid to swirl and defines a variety of non-linear flow paths within the flow paths 28 . 30 to the total length of the flow paths 28 . 30 and maximize heat transfer between the working fluids. In some embodiments, the turbulator exists 70 from a variety of in or on at least one of the first surfaces 32 of the plates 20 . 22 and the first surfaces 52 of the plates 24 . 26 irregularities formed. Suitable configurations of such surface irregularities include, but are not limited to, that in 5 shown plurality of spherical projections as well as in 6 Shown combination of separate, inwardly curved, elongated ribs and separate, V-shaped ribs, which together form a substantially arrow-shaped pattern. In other embodiments, the turbulator is 70 around a separate turbulator that sits between at least one of the plates 20 . 22 the first group of records 12 and the plates 24 . 26 of the second plate groups 14 is appropriate. Without being limited to this, suitable configurations of such a separate turbulator include those in FIG 7 shown alternating subdivisions, which form a plurality of separate, parallel baffles, as well as in 8th slats shown.

To the heat exchanger 10 the first panel groups are to be assembled 12 alternating with the second plate groups 14 stacked. The plate groups 12 . 14 are arranged so that they are nested tightly by the plate groups 12 . 14 as in 4 shown to be positioned essentially 180 degrees opposite each other. In the nested position, the essentially flat second surfaces border 34 of the first groups of plates 12 to the essentially flat second surfaces 54 of the second plate groups 14 on. This creates a double wall between the flow paths 28 . 30 shaped while the essential contact between the flat surfaces 34 . 54 of the respective plate groups 12 . 14 maximizes the efficiency of heat transfer through conduction.

In addition, the first working fluid connections are in the nested position 36 . 38 of the first groups of plates 12 essentially lined up and soldered together to form an external influence manifold 72 and an external drain manifold 74 to build. It is understood that the size and shape of the first working fluid connections 36 . 38 can be modified to change the size and shape of the flow paths 28 . 30 to correspond to the assembly of and the contact between the plate groups 12 . 14 is ensured. The first working fluid influence pipe 72 allows the first working fluid in the flow path 28 inflow, and the first working fluid outflow pipe 74 enables the first working fluid from the flow path 28 emanate. In some embodiments, there is at least one baffle 75 in at least one of the first working fluid influence pipes 72 and the first working fluid discharge pipe 74 attached to a multi-flow circuit in the heat exchanger 10 form so that the flow distribution of the first working fluid and the Heat transfer between the working fluids is maximized. For example, the baffles 75 can be used to create a 2-, 4- or 6-flow circuit within the heat exchanger as required 10 to configure.

A line of influence 76 is in fluid communication with the first working fluid inflow tube 72 to the heat exchanger 10 coupled to allow the working fluid in the heat exchanger 10 to flow. An outflow line 78 is in fluid communication with the first working fluid outflow pipe 74 to the heat exchanger 10 coupled to allow the working fluid out of the heat exchanger 10 emanate. The lines end as shown in the pictures 76 . 78 in the respective openings of the end plates 16 and form a liquid-tight connection. It is understood that the lines 76 . 78 in any way with one of the end plates 16 . 18 can be connected, such as by soldering, welding, clamping, use of a seal and the like.

Likewise, the second working fluid connections 56 . 58 of the second plate groups 14 essentially lined up and soldered together to form an external influence tube 82 and an external spout 84 to build. It is understood that the size and shape of the first working fluid connections 56 . 58 can be modified to change the size and shape of the flow paths 28 . 30 to correspond to the assembly of and the contact between the plate groups 12 . 14 is ensured. The second working fluid influence pipe 82 allows the second working fluid in the flow path 30 inflow, and the second working fluid discharge pipe 84 enables the second working fluid from the flow path 30 emanate. In some embodiments, there is at least one baffle 85 in at least one of the second working fluid influence pipes 82 and the second working fluid outflow pipe 84 attached to a multi-flow circuit in the heat exchanger 10 to be formed so that the flow distribution of the first working fluid and the heat transfer between the working fluids is maximized. For example, the baffles 85 can be used to create a 2-, 4- or 6-flow circuit within the heat exchanger as required 10 to configure.

A line of influence 86 is in fluid communication with the second working fluid inflow tube 82 to the heat exchanger 10 coupled to allow the second working fluid in the heat exchanger 10 to flow. An outflow line 88 is in fluid communication with the second working fluid outflow pipe 84 to the heat exchanger 10 coupled to allow the second working fluid from the heat exchanger 10 emanate. The lines end as shown in the pictures 86 . 88 in the respective openings of the end plates 16 and form a liquid-tight connection. It is understood that the lines 86 . 88 in any way with one of the end plates 16 . 18 can be connected, such as by soldering, welding, clamping, use of a seal and the like. It goes without saying that the lines 76 . 78 . 86 . 88 can be made of any suitable material, such as. B. metal or plastic. The lines run as shown in the illustrations 76 . 78 . 86 . 88 laterally outwards from one side of the heat exchanger 10 , However, it is understood that, as in 9 shown each of the lines 76 . 78 . 86 . 88 as well as additional lines from any side of the heat exchanger 10 can run in any direction and in any desired configuration to the packaging size of the heat exchanger 10 to minimize, the supply of working fluid and the return connections as well as the installation of thermal expansion valve blocks directly on or in close proximity to the heat exchanger 10 to enable.

When starting up, the first working fluid flows into the heat exchanger 10 through the line of influence 76 and into the influence manifold 72 for the first working fluid. The first working fluid then flows into the between the plates 20 . 22 formed flow paths 28 , When the first working fluid through the flow paths 28 runs, the first working fluid flows around the turbulator 70 in the plates 20 . 22 , which causes a swirling of the first working fluid. Then the first working fluid flows from the flow paths 28 through the outflow manifold 74 and into the discharge line 78 from the heat exchanger 10 ,

At the same time, the second working fluid flows into the heat exchanger 10 through the line of influence 86 and into the influence manifold 82 for the second working fluid. The second working fluid then flows into the between the plates 24 . 26 formed flow paths 30 , When the second working fluid through the flow paths 30 runs, the second working fluid flows around the turbulator 70 in the plates 24 . 26 , which causes a swirling of the second working fluid. Typically, heat is transferred from the second working fluid to the first working fluid. However, it is understood that in some applications the heat exchanger 10 , such as when used in a cold climate, heat can be transferred from the first working fluid to the second working fluid if desired. Then the second working fluid flows from the flow paths 30 through the outflow manifold 84 and into the discharge line 88 from the heat exchanger 10 ,

This minimizes the heat exchanger 10 the present invention the leakage and contamination of the working fluids by the flow paths 28 . 30 the respective working fluids are separated by adjacent double walls and by external collecting pipes 72 . 74 for the first working fluid separately from the external manifolds 82 . 84 be provided for the second working fluid.

Based on the foregoing description, one of ordinary skill in the art can easily grasp the essential characteristics of the present invention and make various changes and modifications to the invention to adapt to various uses and conditions without departing from the spirit or scope thereof.

LIST OF REFERENCE NUMBERS

10

heat exchangers

12

first panel group

14

second panel group

16

endplate

18

endplate

20

top / first plate (the plate group 12 )

22

lower / second plate (the plate group 12 )

24

top / first plate (the plate group 14 )

26

lower / second plate (the plate group 14 )

28

first flow path (for collecting a first working fluid)

30

second flow path (to collect a second working fluid)

32

first surface

34

second surface

36

Working fluid connection / fluid connection for the first working fluid

38

Working fluid connection / fluid connection for the first working fluid

40

edge part

42

divider

44

sidebar

46

sidebar

52

first surface

54

second surface

56

Working fluid connection for second working fluid

58

Working fluid connection for second working fluid

60

edge part

62

divider

64

sidebar

66

sidebar

70

turbulator

72

Influence manifold, first working fluid inflow tube

74

Outflow manifold, first working fluid outflow pipe

75

Baffle (plate group 12 )

76

Influence line for first working fluid

78

Outflow line for first working fluid

82

Influence pipe / second working liquid inflow pipe

84

Outflow pipe / second working liquid outflow pipe

85

Baffle (plate group 14 )

86

Influence line / line for second working fluid

88

Outflow line / line for second working fluid

Claims (11)

THE FOLLOWING IS CLAIMED: A heat exchanger (10) consisting of: a plurality of first plate groups (12) including an upper plate (20), a lower plate (22) and a first flow path (28) which is between the first plate (20) and the second Plate (22) of the first plate group (12) is formed to collect a first working fluid therein, the first plate (20) and the second plate (22) each having a first surface (32), a flat second surface (34) and include at least one working fluid port (36, 38) formed therein, and wherein the first plate (20) and the second plate (22) of the respective first plate groups (12) are arranged so that the first surfaces (32) face each other and the first working fluid connections (36) of the first plate groups (12) are lined up in such a way that they form a first external collecting pipe (72), the first external collecting pipe (72) being in liquid communication with the first flow path (28) for collecting the first working fluid; and a plurality of second plate groups (14), including an upper plate (24), a lower plate (26) and a second flow path (30) which is between the first plate (24) and the second plate (26) of the second plate groups ( 14) is formed to collect a second working fluid therein, each of the first plate (24) and the second plate (26) of the second plate groups (14) having a first surface (52), a flat second surface (54) and at least a second working fluid port (56, 58) formed therein, and wherein the first plate (24) and the second plate (26) of the respective second plate groups (14) are arranged so that the first surfaces (52) face each other and the second Working fluid connections (56, 58) of the second plate groups (14) are lined up in such a way that they form a second external collecting pipe (84), the second external collecting pipe (84) being in liquid communication with the second flow path (30) for collecting the second working liquid, and the first plate groups (12) are nested with the second plate groups (14), so that the flat surfaces (32) of the first and second plates (20, 22) of the first plate groups (12) touch the flat surfaces (54) of the respective first and second plates (24, 26) of the second plate group (14), at least one baffle (75, 85) in at least one of the first and second working fluid influence pipes (72, 82) and the first and second working fluid outflow pipe (74, 84) is attached to form a multi-flow circuit in the heat exchanger (10). Heat exchanger (10) after Claim 1 , wherein the first and second plates (20, 22) of the respective first plate groups (12) are identical. Heat exchanger (10) after Claim 1 , wherein the first and second plates (24, 26) of the respective second plate groups (14) are identical. Heat exchanger (10) after Claim 1 , wherein the first and second plates (20, 22) of the respective first plate groups (12) and the first and second plates (24, 26) of the second plate groups (14) are identical. Heat exchanger (10) after Claim 1 , wherein at least one of the flow paths (28, 30) is U-shaped. Heat exchanger (10) after Claim 1 wherein at least one of the flow paths (28, 30) contains at least one turbulator (70). Heat exchanger (10) after Claim 1 , wherein the first plate groups (12) are soldered together with the second plate groups (14). A heat exchanger (10) consisting of: a plurality of first plate groups (12) including an upper plate (20), a lower plate (22) and a first flow path (28) which is between the first plate (20) and the second plate (22) of the first plate group ( 12) is formed to collect a first working fluid therein, the first flow path (28) including at least one turbulator (70) and the first plate (20) and the second plate (22) of the first plate groups (12) each first surface (32), a flat second surface (34) and at least one working fluid connection (36, 38) formed therein, and wherein the first plate (20) and the second plate (22) of the respective first plate groups (12) arranged that the first surfaces (32) face each other and the first working fluid connections (36) of the first plate groups (12) are lined up in such a way that they form a first external header pipe (72) ei the first external manifold (72) is in fluid communication with the first flow path (28) for collecting the first working fluid therein; and a plurality of second plate groups (14), including an upper plate (24), a lower plate (26) and a second flow path (30) which is between the first plate (24) and the second plate (26) of the second plate groups ( 14) is formed to collect a second working fluid therein, the second flow path (30) including at least one turbulator (70) and the first plate (24) and the second plate (26) of the second plate groups (14) each first surface (52), a flat second surface (54) and at least one second working fluid connection (56, 58) formed therein, and wherein the first plate (24) and the second plate (26) of the respective second plate groups (14) so are arranged so that the first surfaces (52) face each other and the second working fluid connections (56, 58) of the second plate groups (14) are lined up in such a way that they form a second external collection Form the el pipe (84), the second external header pipe (84) being in fluid communication with the second flow path (30) for collecting the second working liquid, and the first plate groups (12) being nested with the second plate groups (14) so that the flat surfaces (32) of the first and second plates (20, 22) of the first plate groups (12) touch the flat surfaces (54) of the first and second plates (24, 26) of the second plate group (14), wherein at least one baffle (75, 85) is attached in at least one of the first and second working fluid inflow pipes (72, 82) and the first and second working liquid outflow pipe (74, 84) to create a multi-flow circuit in the heat exchanger (10) form. Heat exchanger (10) after Claim 8 with at least one turbulator (70) consisting of a plurality of irregularities formed on the first surfaces (32, 52) on at least one of the plates (20, 22, 24, 26) in at least one of the plate groups (12, 14). Heat exchanger (10) after Claim 8 with at least one separate turbulator (70) which is attached between the plates (20, 22, 24, 26) in at least one of the plate groups (12, 14).

Images