KR20140088125A - Plate for heat exchanger and heat exchanger equipped with such plates - Google Patents

Abstract

The present invention is configured to enable heat exchange between a second fluid (C) circulating in contact with a plate (4) and a second fluid (G), and to form a circuit (8) for a first fluid To the plate (4) constituted. According to the invention, the plate 4 is arranged to penetrate into the plate for collecting the first fluid C and to flow from the inlet 40 into the circuit 8 and / or the outlet 42 from the circuit 8, And one or more protrusions 38, The present invention also relates to an array 2 of such plates 4 and to a heat exchanger 1 comprising such an array 2.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plate for a heat exchanger and a heat exchanger having such a plate,

The present invention relates to a plate for a heat exchanger, and more particularly to a plate for a heat exchanger for an automobile.

BACKGROUND OF THE INVENTION Switches known as charge air coolers, which allow the exchange of heat between the charge air and the coolant liquid for supplying to the engine of an automobile, are well known in the art. These exchangers include a heat exchanger array comprising a stack of plates for determining charge air and between these alternating circulation channels for coolant liquid.

Each plate guides the coolant liquid in a circuit comprising a plurality of passageways. These plates represent a general shape of an elongated rectangle with two large side faces and a small side face, each plate comprising two bosses, the first boss forming an inlet into the circuit for the circulation of the coolant liquid, The boss forms an outlet from the circuit for circulation of the coolant liquid. The boss is positioned along one and the same small side of the plate. These bosses are configured to be in contact with the bosses of the adjacent plates to allow coolant liquid to pass from one circulation channel to the other circulation channel. Thus, the coolant liquid is dispersed between the plates via the inlet bosses. This coolant liquid then flows along the passageway in the circuit for circulation of the coolant liquid before it exits the plate at the level of the outlet boss.

Charge air enters the array at one of the major sides of each plate before it exits the plate at the other side of the major side. Thus, each plate includes a coolant liquid and charge air located at the level of the passageway and a zone for exchange of heat between the inlet / outlet zones for introducing coolant liquid into and / or out of each plate do.

One disadvantage arises from the fact that the area in which the boss is located in the interior can concentrate mechanical stresses which can cause rupture of the soldered elements to each other. Through this zone, the charge air passing between the boss and the first longitudinal extremity of the plate, in particular, is not passed through the exchange zone between the two fluids, and thus there is no heat exchange with the coolant liquid, There are other drawbacks from the fact that these zones are extremely harmful to the thermal performance.

A known method of avoiding this problem is to add parts of the replenisher that alter parts of the exchanger, configure the screen, and limit the passage of fluid through the area to be cooled. However, this has the effect of complicating the parts parts and / or the process of manufacturing the exchanger, which will incur additional costs and possibly lead to an increase in the weight of the exchanger.

It is an object of the present invention to improve such a situation.

For this purpose, the present invention proposes a plate configured to enable exchange of heat between a circulating first fluid and a second fluid in contact with the plate, and configured to form a circuit for the first fluid.

According to the present invention, the plate comprises one or a plurality of projections configured to pierce into a collection plate for collecting a first fluid and form an outlet from the inlet and / or the circuit into the circuit.

The area of each plate for exchanging heat between two fluids is increased in size by this method and the area of each plate not involved in the exchange of heat is reduced in size. In fact, only the portion of the plate that is not directly involved in the exchange of heat is located at the level of the projection. It is also understood that the projections that are oriented in different ways are subjected to less stress in the inlet / outlet area for the first fluid in a known plate comprising the boss.

According to one embodiment of the present invention, the plate includes two projections. For example, the plate may include one inlet protrusion and one outlet protrusion, wherein the first fluid may flow through the one inlet protrusion, and the first fluid may escape through the one outlet protrusion.

According to another embodiment of the present invention there is provided a lithographic apparatus comprising two small sides and two large sides so that the plate has a rectangular shape and the one or more protrusions are located at the level of the small side of the rectangle have.

According to one exemplary embodiment, the plate and the protrusion include a bottom and an edge forming the circuit, wherein the bottom of the one or more protrusions and the bottom of the plate extend in one and the same plane have. The bottom of the one or more protrusions has, for example, one distal end portion that has no edge, so that the first fluid can flow into and / or out of the circuit through the distal extremity of the protrusion .

According to another exemplary embodiment, the edges defining the circuit are parallel to each other at the level of one or a plurality of projections and are flared in the remainder of the circuit. These edges may continue to be parallel to each other to the region where the flow direction of the first fluid is changed. Thus, the edge takes the form of a funnel close to the projection. Here, the term proximity is used to indicate a zone located between 0 mm and 30 mm from the projection.

The present invention also relates to an array for exchanging heat, comprising a laminate of plates of the type described above, said plates being arranged in pairs such that two plates of the same pair are arranged in a circulating channel Are determined between these plates. Similarly, two plates disposed opposite each other and belonging to two pairs of adjacent plates determine a circulation channel for the second fluid between these plates.

The present invention also relates to a heat exchanger comprising an array for exchangers as described above, wherein the collecting plate is configured to be penetrated by the protrusions of the plate.

According to one embodiment of the present invention, the heat exchanger includes a housing having four walls, the array being inside the housing, and one of the four walls is the collection plate. The collection plate is a plate located opposite the lateral wall of the housing, i.e., the peripheral edge of the plate having the projection.

According to another embodiment of the present invention, the heat exchanger comprises at least one inlet collector and one outlet collector, wherein the protrusions of the plate forming the inlet of the circuit protrude into the interior of the inlet collector, The protrusion of the plate forming the outlet port protrudes into the inside of the outlet collector. In this way, the one or more inlets and / or outlets collectors are external to the housing, i.e. outside the array, so that the array as a whole is involved in the heat exchange between the two fluids.

According to one exemplary embodiment, the collection plate includes a planar section and a collar surrounding the projection. The collar engages the mechanical support of the plate relative to the housing and conforms to the contour of the projection in such a way that the two fluids are separated in an impermeable manner.

According to one embodiment of the present invention, the edges of the protrusions are terminated as flat surfaces extending in a plane parallel to the plane in which the protrusions are allowed to be soldered together and the bottoms of the protrusions extend. The two plates forming a pair of plates are in contact at the level of the inner surface of the flat surface. The collar conforms to the outer surface of the edge of the projection and the outer surface of the bottom of the projection, and then the lateral surface of the flat surface is brought into contact with the planar section of the collection plate. Thus, each collar surrounding the protrusions of the pair of plates includes an upper portion and a lower portion, the lower portion of the collar being in contact with the protrusions of the lower plate of the pair of plates, and the upper portion of the collar And comes into contact with the projection of the plate. The lower and upper portions of each collar will not contact each other.

According to one embodiment of the invention, the baffles are arranged inside the exchanger, and the baffles extend between the two pairs of plates until they are close to the collection plate. In this way, the baffle does not interfere with the flow of the second fluid circulating between the pair of plates from one lateral wall of the housing to the other lateral wall. Here, the term proximity is used to indicate a distance between 0 mm and 1 mm.

The present invention also relates to a module for air intake comprising an exchanger of the type described above.

Other characteristic features and advantages of the present invention can be better appreciated by reading the following detailed description of an exemplary embodiment provided by way of example with reference to the accompanying drawings.

1 is a perspective view partially showing a heat exchanger according to the present invention including a plate;
Figure 2 is a view of the plate of the exchanger of Figure 1 viewed from above.
Figure 3 is a partial perspective view of a collection plate that is passed through the level of the collar by the projection of the plate of the exchange.
Figure 4 is a partial view of a side view of the exchanger showing the collection plate.

As shown in Fig. 1, the present invention is directed to a heat exchanger 1 that permits the exchange of heat, for example, between a first fluid, such as a coolant liquid C, and a second fluid, . The heat exchanger may be a charge air cooler and the fluid to be cooled flows in the charge air cooler, for example, compressed air configured to supply to an internal combustion engine such as an automobile engine. This flow of compressed air is cooled by a coolant liquid, in particular in the form of a mixture of water and glycol.

The exchanger 1 comprises an array 2 for the exchange of heat and the array 2 comprises alternating circuits 6 and 8 for the coolant liquid C and for the fluid G to be cooled, And a stack of plates 4, In this case, the array 2 is generally in the shape of a balanced hexahedron and forms an inlet surface 10 and an opposite outlet surface for the second fluid G, unless otherwise indicated. In this case the plate 4 is arranged in pairs in such a way that two plates 4, one and the same pair, determine the circulation channel for the coolant liquid C between them. The circuit 6 for circulation of the fluid G to be cooled is provided between two plates 4 arranged opposite to each other between two pairs of adjacent plates.

The exchanger also includes a housing (5), and the array (2) is located inside the housing (5). In this case, the exchanger includes a left lateral wall 18 located on the left in FIG. 1 and a right lateral wall 19 located on the right in FIG. The left lateral wall 18 comes into contact with the left lateral edge of the plate 4 (reference numeral 16 in FIG. 2), while the right lateral wall 19 comes into contact with the left lateral edge of the plate 4 Edge (reference numeral 17 in Fig. 2). Similarly, the housing 5 includes a top wall (not shown) and a bottom wall 22 connecting the lateral walls 18, 19 together. The housing 5 guides the fluid G to be cooled between the plates 4 from the inlet surface 10 to the outlet surface of the array 2.

The exchanger 1 may also comprise a secondary exchange surface disposed inside the circuit 6 for the circulation of the second fluid. The secondary exchange surface extends between two plates (4) arranged opposite to each other and belonging to two pairs of adjacent plates. In this case, the secondary exchange surface includes a pleated baffle 52 inserted between the plates inside the circuit 6 for circulation of the fluid to be cooled.

Figure 2 shows a plate 4 according to the invention. This plate 4 comprises for example a substantially planar bottom 31 which is surrounded by a peripheral edge 32 which is terminated by a flat surface 34 and the plates are soldered . The circuit 8 for the coolant liquid is formed by one or a plurality of central edges 60 made of the material of the bottom 31 of the plate, on the one hand, by the peripheral edge 32, on the other hand, do. The plate 4 has a general shape of an elongated rectangular shape having, for example, two large side faces corresponding to the lateral edges 16 and 17 and two small side faces.

According to the present invention, each plate is configured to pierce into a collection plate (corresponding to the left lateral wall 18 in Fig. 1) for the coolant liquid and to flow through the inlet 40 into the circuit 8 and / (38, 39) forming an outlet (42) from the outlet (8). In this case, the inlet protrusion 38 of the projection forms an inlet port 40, and the outlet protrusion 39 forms an outlet port 42.

The projections 38 and 39 are located at the small side surfaces 16 and 17 of the plate, in this case at the level of the small side surface 16 located on the left side in FIG. These protrusions include a bottom 43 and an edge 44 extending from the bottom 31 and the edge 32 of the plate 4, respectively, toward the outside of the plate, i.e., beyond its lateral edge 16. Thus, the projections 38, 39 are projected relative to the bottom 31 of the plate 4. The bottom 43 of the projections 38 and 39 extends, for example, in a plane in which the bottom 31 of the plate 4 extends. The projections 38 and 39 have one edge-free extremity 45 with no edge and two lateral extremities with an edge 44. The coolant liquid can be pushed into or out of the plate 4 via the distal extremities 45 of the protrusions 38 and 39 and the bottoms 31 and 42 and the protrusions 38 and 39, 39 of the plate 4 and through the edges 32, 60, 44 of the plate 4. As shown in Fig.

Similar to the peripheral edge 32 of the plate 4, the projections 38 and 39 are terminated by a flat surface 46 extending in a plane parallel to the bottom 43 of the projections 38 and 39. One and the same pair of inlet projections 38 and / or outlet projections 39 of the plate are in contact with these flat surfaces 46 and are soldered together at the level of the inner surface of these flat surfaces 46.

The edges 32, 44, 60 are parallel to each other at the level of the projections 38, 39. These edges 32, 44 and 60 are flared shapes close to the projections 38 and 39, that is, these edges 32, 44 and 60 are located between 0 mm and 30 mm, The flared shape is in the area. By making the edges 32, 44 and 60 flare like this, the circuit 8 for the circulation of the coolant liquid can be enlarged when the enlargement is in proximity to the inlet projections 38, 39), it is possible to reduce the circuit (8) for circulation of the coolant liquid. Next, the edges (32, 60) of the plate (4) are parallel to each other to a region where the flow direction of the coolant liquid is changed.

The circuit 8 formed by the plate 4 makes it possible to guide the coolant liquid into a number (n) of continuous passages, in this case two continuous passages, in which coolant liquid flows from the inlet 40 And circulates toward the outlet 42. The two adjacent passages are separated, for example, by one or more central edges 60 of the plate 4. The passages extend parallel to one another in the direction of extension, in this case on the larger side of the plate 4. These passages may also be alternately provided in series.

The circulation of the coolant liquid, which changes the direction of flow from one passageway to the other passageway, thus extends from the inlet surface of the array to the outlet surface of the array, i.e. from two of the two large sides of the plate 4 In the direction generally perpendicular to the direction of flow of the fluid to be cooled through the exchanger to the other of the two.

In the illustrated example in which the plate 4 forms two passageways, the plate comprises a single central edge 60. Also, in a manner that divides a single passageway into a plurality of sub-passageways, the plate may also include a half edge 60 'parallel to the central edge 60 and parallel to the peripheral edge 30. The central edge 60 is thus oriented towards the large side of the plate 4 to form a sinuous circulation of coolant liquid in each of the passages of each of the circuits 8 for the circulation of the coolant liquid. The central edge 60 extends from the left side edge 16 toward the right side edge 17 of the plate and extends from the passage existing on one side of the center edge 60 to the center edge 60 so as to allow the coolant liquid to flow freely to other passages present on the other side of the channels.

The plate in this case includes a plurality of baffles 55 located inside the circuit 8. [ These baffles 55 are produced, for example, by deep drawing of the material from the bottom of the plate 4, in particular the plate. These baffles may take a hemispherical shape, or a more rectangular shape, as shown in Fig.

Once assembled, the plates 4 are grouped together in pairs and in contact at the level of their flat surfaces 34, 46 and / or their edges 32, 60, 44. In this way, one plate and the upper plate in the same pair of plates and the circuit (8) of the lower plate complement each other to form a circulation channel for the coolant liquid. Thus, a circuit 8 for circulation of coolant liquid in one of the two plates is positioned opposite the circuit 8 for circulation of coolant liquid in one of the two plates in one and the same pair, The plates 4 are stacked in pairs.

In this way, the projections 38, 39 of the lower plate 4 of the pair of plates are positioned opposite to the plurality of projections 38, 39 of the upper plate 4 of the same pair of plates.

With reference now to the heat exchanger shown in FIG. 1, it can be seen that the projections penetrate into the collector plate of the exchanger, in this case, into the left wall 18 of the housing 5.

The exchanger is connected to the inlet collection box 71 for the coolant liquid C in order to allow the coolant liquid C to flow into the circuit 8 of the various plates 4 of the passage 1 and out of the circuit 8. [ And an outlet collection box (72). The inlet collection box 71 is positioned opposite the plurality of inlet projections 38 of the plate 4 and with the area of the left wall 18 at the level at which the inlet projections protrude, (73). The outlet collection box 72 is positioned opposite the plurality of outlet protrusions of the plate 4 and with the area of the left wall 18 at the level at which the outlet protrusions 39 project, (74).

The collection boxes 71 and 72 are connected to the left and right sides of the housing 5 to allow the coolant liquid C to flow into and / or out of the circuit 8 for circulation of the coolant liquid by the projections. And has a shape of a skirt that is opened at the level of the skirt 18. Similarly, the collection boxes 71 and 72 may enter the collectors 73 and 74 and / or exit from the collectors 73 and 74, i. E., Into and / or out of the exchanger 1 Thereby forming an opening that is not shown.

In this case the skirt includes two lateral surfaces 75 and 76 located on both sides of the projection and one surface called the left surface 77 connecting these two lateral surfaces 75 and 76 do. It should be appreciated that the lateral surfaces 75,76 form a flared form from the lower or upper edge of the box toward the opposing surface with inlet / outlet openings for the coolant liquid. That is, the section of the skirt in the plane parallel to the plane in which the bottom of the plate 4 extends extends from the upper surface to the lower surface.

The boxes 71 and 72 are fixed to the collection plate 18 by a terminal contour, here by a folded edge 90 supported against the collection plate 18. Due to the flared configuration imparted to the circuit 8 in close proximity to the projection, the box can be configured in such a way as to indicate the width, or distance, between the two lateral surfaces 75, 76 of the box 71, 72 That is, the distance between the inlet / outlet surfaces for the fluid to be cooled, which is substantially the same as the length of the lateral edges of the plate 4, or the length of the lateral edges It's a bit big.

Thus, the coolant liquid C is pierced into the exchanger 1 by, for example, entering the inlet collector 73 by an inlet / outlet tube (not shown). Next, the coolant liquid is dispersed in the circuit (8) between the plates (4) for circulation of the coolant liquid by the inlet protrusions. The coolant liquid then flows back into the two passages of the circuit 8 for circulation of the coolant liquid from the inlet to the outlet and at that level the coolant liquid is introduced into the array 2 before entering the outlet collector 74, ≪ / RTI > Next, the coolant liquid C may escape from the exchanger 1 via, for example, an inlet / outlet tube.

3 shows one form of the invention, according to Fig. 3, the left side wall 18 of the box 5, i.e. the collecting plate, comprises a planar section 80 surrounding the projections 38, 81). In this case, each collar 81 includes two protrusions 38, 39 that are in contact with each other and belong to one and the same pair of plates. Their role is to facilitate the insertion of the protrusions 38, 39 into the collection plate, to ensure their mechanical support and to ensure that the heat exchange arrays 2 for the cooling liquid and the fluid to be cooled and the inlet and / To ensure sealing between the collectors. The collar 81 is manufactured, for example, by slotting the collecting plate, and is soldered to the protrusions 38 and 39 in a manner that concurrently with the soldering of the remainder of the exchanger.

The collar 81 has an upper section 82 in contact with the projections 38 and 39 of the upper plate of the pair of plates and a lower section 83 in contact with the projections 38 and 39 of the lower plate of the same pair of plates, . The lower and upper sections 82 and 83 of the collar 81 are mutually symmetrical with respect to the plane through which the flat surfaces 46 of the projections 38 and 39 pass.

The contact between the collar 81 and the projection is made at the level of the bottom 43 and the edge 44 of the projections 38, 39 in particular. In practice the collar 81 conforms to the outer surface of the edge 44 of the projections 38 and 39 and to the outer surface of the bottom 43 of the projections 38 and 39.

The flat surface 46 of the protrusions 38, 39 is terminated at the level of the lateral surface 84. These lateral surfaces 84 are not in contact with the collar 81. The upper section 82 and the lower section 83 of the collar 81 terminate at the level of the outer surface of the flat surface 46 of the protrusions 38 and 39 and the lateral surface of the flat surface 46 It does not surround. Thus, these lateral surfaces are in direct contact with the planar section 80 of the collection plate.

Figure 4 shows a baffle 52 for the flow of fluid to be cooled, the baffle extending between two adjacent pairs of plates. According to the invention, these baffles 52 extend from one lateral wall of the box to the other lateral wall. In this case, the left lateral wall 18 serves as a collection plate for coolant liquid, and the baffle 52 is located close to the collection plate, i. E. Less than 1 mm from the collection plate. Thus, the exchange of heat is optimized because the exchange of heat is effected in the area extending from the left lateral wall 18 of the box to the right lateral wall of the box.

The different parts of the exchanger are made of, for example, aluminum, or an alloy of aluminum. In particular, they are soldered together.

Claims (15)

A plate (4) configured to enable heat exchange between the circulating first fluid (C) and the second fluid (G) in contact with the plate (4) 4)
The plate 4 is configured to pierce into a collection plate 18 for collecting a first fluid C and is adapted to pass through the inlet 40 into and out of the circuit 8 and / (38, 39) forming one or more projections
plate. The method according to claim 1,
Characterized in that the plate (4) comprises two projections (38, 39) which respectively define an inlet (40) into the circuit (8) and an outlet (42)
plate. 3. The method according to claim 1 or 2,
The plate 4 comprises two small sides 16 and 17 and two large sides so that the plate 4 has a rectangular shape and the one or more protrusions 38 and 39 have a rectangular shape, Is located at the level of the rectangular small side surfaces (16, 17)
plate. 4. The method according to any one of claims 1 to 3,
The plate 4 and the projections 38 and 39 comprise bottoms 31 and 43 and edges 32 and 60 and 46 forming the circuit 8 and the one or more projections 38, 39) and the bottom of the plate (4) extend in one and the same plane
plate. 5. The method of claim 4,
Characterized in that the edges (32,60, 46) defining the circuit (8) are parallel to each other at the level of the one or more protrusions (38,39) and are flared in the remaining direction of the circuit Characterized by
plate. An array (2) for the exchange of heat, comprising a laminate of plates (4) according to any of the claims 1 to 5, characterized in that the plates (4) are arranged in pairs, Characterized in that the two plates (4) determine a circulation channel for the first fluid (C) between these plates
Array. A heat exchanger (1) comprising an array (2) for the exchange of heat according to claim 6, characterized in that the collection plate (18) is configured to be pierced by the projections (38, 39) of the plate Characterized by
heat transmitter. 8. The method of claim 7,
The exchanger includes a housing (5) having four walls (18, 19, 22) in which the array (2) One of which is the collection plate (18)
heat transmitter. 9. The method according to claim 7 or 8,
The exchange 1 comprises at least one inlet collector 73 and one outlet collector 74 and the projection 38 of the plate 4 forming an inlet 40 in the circuit 8 Characterized in that the projection (39) of the plate (4) protruding into the interior of the inlet collector (73) and forming the outlet (42) from the circuit (8) protrudes into the interior of the outlet collector doing
heat transmitter. 10. The method according to any one of claims 7 to 9,
Characterized in that the collection plate (18) comprises a planar section (80) and a collar (81) surrounding the projection (38, 39)
heat transmitter. 11. The method of claim 10,
The edges 44 of the protrusions 38 and 39 extend in a plane parallel to the plane in which the protrusions 39 and 39 are allowed to be soldered to each other and the bottom 31 of the protrusions 38 and 39 extends And is terminated as a flat surface (46).
heat transmitter. 12. The method of claim 11,
Characterized in that the two plates (4) forming a pair of plates are in contact at the level of the inner surface of the flat surface (46)
heat transmitter. 13. The method according to claim 11 or 12,
The collar 81 conforms to the outer surface of the edge 44 of the protrusions 38 and 39 and the outer surface of the bottom 43 of the protrusions 38 and 39 and / Characterized in that the directional surface (84) is in contact with the planar section (80) of the collection plate (18)
heat transmitter. 14. The method according to any one of claims 7 to 13,
Characterized in that the baffle (52) is arranged inwardly and the baffle (52) extends between the two pairs of plates until they are close to the collection plate
heat transmitter. A module for air intake comprising an exchange according to any one of claims 7 to 14.

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