JP2018514741A - Heat exchanger having a plurality of stacked plates - Google Patents

Abstract

The present invention relates to a heat exchanger comprising a plurality of stacked plates 3, intended to allow heat exchange between a first fluid and a second fluid flowing in contact with said plates 3. The exchanger comprises a bottle 11 for a first fluid, the intermediate port 69b allowing the first fluid to flow between the plate 3 and the bottle 11 on the plate 3; 75 is provided, and the intermediate ports 69 b and 75 are arranged in a direction substantially crossing the longitudinal main extending direction of each plate 3.

Description

  The present invention relates to a heat exchanger for stacked plates, and more particularly to a condenser that allows heat exchange between a coolant and a liquid phase coolant.

  Heat exchangers are known in the art that include a heat exchange bundle having a series of plates stacked in parallel to each other. The stack of plates forms a plurality of heat exchange surfaces, between which coolant and coolant flow through the fluid path circuit in alternating layers. Thus, the multi-plate stack is configured to define two different circuits: a coolant circuit and a coolant circuit.

  Known exchangers of this type include an exchanger further provided with a bottle for the coolant and a sub-cooling portion located downstream from the bottle.

  In this case, the plurality of stacked plates are separated into two parts, a cooling part and a sub-cooling part, and at least two coolant circulation ports communicating with the bottle are provided. It is known to arrange these ports in a direction parallel to the longitudinal extension direction of the stacked plates.

  However, this arrangement of flow openings creates a region on the surface of the plurality of plates where the coolant flow and thus the heat exchange between the coolant and the coolant is low or does not actually exist. Has the disadvantages.

  One object of the present invention is a plurality of stacked plates intended to allow heat exchange between a first fluid and a second fluid flowing in contact with the plates. In another aspect of the present invention, there is provided a heat exchanger comprising a plurality of stacked plates, wherein the heat exchanger comprises a bottle for a first fluid, the plate comprising: A plurality of intermediate ports are provided that allow a fluid to flow between the plate and the bottle, the intermediate ports being arranged in a direction substantially transverse to the longitudinal main extension direction of the plate. Is done.

  Thus, the direction of the coolant flow is transverse to the direction in which the intermediate ports are aligned, limiting the area of low heat exchange.

According to various embodiments that can be taken together or separately:
The plates each have two parts, a first part for allowing heat exchange between the first fluid and the second fluid before the first fluid enters the bottle; And a second portion that allows heat exchange between the first fluid and the second fluid after the fluid enters the bottle, and wherein the intermediate port is the first port Between one part and the second part,
The first part of the plate defines a condensation region, the second part defines a sub-cooling region;
The first of the intermediate ports allows a first fluid to flow from the condensation area to the bottle, and the second of the intermediate ports allows the first fluid to flow from the bottle to the sub-cooling area. Allows to flow,
The plate further comprises an additional port, called a through-flow port, aligned with the first intermediate port and the second intermediate port;
-The flow-through port of at least one plate, called the second plate, is sealed to allow the first fluid to flow through several passages in the condensation region;
The bottle extends in the main direction of the plate;
The heat exchanger is provided with a plurality of inlet manifolds and a plurality of outlet manifolds, the bottles and the manifolds being arranged on the same side of the heat exchanger, called the upper side;
The intermediate port has a longitudinal and / or elongated shape in the direction of the second fluid flow;
Each of said intermediate ports has a width measured in a direction transverse to said longitudinal main extension direction and decreasing substantially over the entire length of the port in the direction of said second fluid flow; Have.

  The invention will be more clearly understood by reading the following detailed description of at least one embodiment of the invention, which is provided as a purely illustrative and non-limiting example, with reference to the accompanying schematic drawings, Other objects, details, features and advantages will become clearer.

FIG. 1 is a side view of a heat exchanger according to the present invention. FIG. 2 is a view along the section AA of the heat exchanger according to the present invention in the first embodiment. FIG. 3 is a view along a section AA of the heat exchanger according to the present invention in the second embodiment. FIG. 4 is a perspective view of a part of the front surface of the first type plate according to the present invention in the first embodiment. FIG. 5 is a perspective view of a part of the front surface of the second type plate according to the present invention in the first embodiment. FIG. 6 is a perspective view of a part of the front surface of a third type plate according to the present invention in the first embodiment. FIG. 7 is a perspective view of a part of the front surface of a fourth type plate according to the present invention provided with a partition. FIG. 8 is a perspective view of the front surface of the second type plate according to the present invention in the first embodiment. FIG. 9 is a perspective view of the front surface of the fourth type plate in the first embodiment. FIG. 10 is a perspective view of a first type of plate according to the present invention in the second embodiment. FIG. 11 is a perspective view of a part of the front surface of the second type plate according to the present invention in the second embodiment.

  The present invention relates to a heat exchanger for exchanging heat between a first fluid and a second fluid, in particular a condenser of an air conditioning circuit, more particularly a heat exchanger in a motor vehicle.

  The first fluid is, for example, a refrigerant such as a fluid known under the name R134a or a fluid known under the name R1234yf. The heat exchanger is configured such that the first fluid enters it in the gas phase and exits in the liquid phase. The second fluid is a coolant that can be, for example, water mixed with an antifreeze such as glycol. In other words, the coolant may be a mixture of water and glycol.

  As shown in FIGS. 2 and 3, the exchanger includes a bundle 1 of a plurality of plates 3 stacked in a stacking direction 5, and passages 7 and 9 for the first fluid and the second fluid. And the fluids exchange heat with each other. Advantageously, a given plate 3 defines a passage 7 for a first fluid with another adjacent plate 3 and a passage 9 for a second fluid with another adjacent plate 3. . In other words, the first fluid passage 7 and the second fluid passage 9 continue to each other in an alternating manner. In this case, the bundle 1 has a parallelepiped shape.

  In other words, the plurality of stacked plates 3 are provided so as to together define a first circuit for a first fluid flow and a second circuit for a second fluid flow. These circuits allow the first fluid to flow away from the second circuit and allow the second fluid to flow away from the first circuit. Each of the first circuit and the second circuit includes a plurality of first fluid passages 7 and a plurality of second fluid passages 9.

  As shown in FIG. 1, the exchanger further includes a bottle 11 for the first fluid. In the case of a condenser, the bottle 11 is provided so as to separate the gas phase and the liquid phase of the refrigerant so that only the liquid phase can flow downstream of the bottle 11. The bottle 11 may also include a filter and / or dryer for filtering and / or drying the first fluid.

  Each of the plurality of plates 3 includes two portions 130 and 150, the first portion 130 exchanging heat between the first fluid and the second fluid before the first fluid enters the bottle 11. The second portion 150 is configured to allow heat exchange between the first fluid and the second fluid after the first fluid has passed through the bottle 11. Is provided.

  The first portion 130 and the second portion 150 of the plurality of plates 3 define a first region 13 and a second region 15, respectively, in the bundle. In the case of a condenser, the first region 13 is a condensation region, and the first region 15 is a sub-cooling region. It should be noted that the bundle 1 is configured such that the first fluid cannot flow directly between the first fluid passage 7 in the first region 13 and the fluid passage in the second region 15. The

  As shown in FIGS. 8 and 9, the stacked plates 3 have, for example, a rectangular shape. Each of the plurality of plates 3 includes a lower edge 31 and an upper edge 32, which preferably extend in the longitudinal main extension direction between the edges 31, 32, the longitudinal extension direction being preferably of the bottle. Parallel to the longitudinal extension direction. The lower edge 31 and the upper edge 32 face each other along the longitudinal main extending direction. The plurality of plates 3 also includes two longitudinal edges 34 extending longitudinally between the lower edge 31 and the upper edge 32. The plurality of plates 3 also have raised edges 30 around them. The plurality of plates 3 are provided on the raised edge 30 so as to be placed in contact with each other, for example, by brazing. The plurality of plates 3 have two surfaces, a front surface and a back surface, and the raised edge 30 is disposed on the front surface of each plate 3. That is, the raised edge 30 protrudes from the front surface side of each plate 3.

  The plurality of plates 3 can be obtained, for example, by chasing, stamping and / or shaping a rolled metal sheet, for example of aluminum and / or aluminum alloy.

  With respect to the first fluid, the bottle 11 is connected upstream with the first region 13 of the bundle 1 and downstream with the second region 15 of the bundle 1. In other words, the heat exchanger is configured such that the first fluid passes continuously through the first region 13 of the bundle 1, the bottle 11 and the second region 15 of the bundle 1. The

  The heat exchanger includes an inlet manifold 19i for a first fluid, an outlet manifold 19o for a first fluid, an inlet manifold 18i for a second fluid, and an outlet manifold 18o for a second fluid. .

  As shown in FIG. 1, advantageously, the manifold and bottle 11 are located on the same side of the heat exchanger. In this case, the inlet manifold and the outlet manifold are arranged on the upper side 17, for example close to the opposite corner of the upper side 17.

  Advantageously, the heat exchanger is configured such that the first fluid enters the bundle 1 through the first fluid inlet manifold 19i. The first fluid then flows through the first region 13 and then flows through the bottle 11 and back to the bundle 1 where it flows through the second region 15. The first fluid eventually exits the bundle 1 through a first fluid outlet manifold 19o.

  Advantageously, unlike the case for the first fluid, the bundle 1 has one of the first region 130 and the second region 150 without the second fluid passing through the bottle 11. Configured to flow through the bundle 1 directly from one to the other. In this case, the flow direction of the second fluid is substantially the same in the entire bundle 1.

  The bottle 11 advantageously extends parallel to the upper side 17 of the bundle 1. In this case, the bottle 11 is arranged between the manifolds 19i and 19o. Thus, depending on the length available for the bottle 11, the cross section of the bottle 11 is adapted to obtain the desired volume. This possibility of changing the volume of the bottle 11 by changing its cross section means that the manifolds 19i, 19o are more easily accessible. This configuration allows the use of a bottle 11 that is easy to integrate and manufacture at a high level.

  The heat exchanger can also be provided with a reinforcing plate 49 on the upper side 17, for example.

  As shown in FIG. 2, the bundle 1 advantageously defines a plurality of passages for the first fluid in the first region 13, in this case three passages 25a, 25b, 25c. To do. The passages 25a, 25b, 25c are configured such that the first fluid flows continuously from one passage to the next in this order and changes direction between the passages. When the first region 13 is, for example, a condensing region for a first fluid, the number of passages associated with each passage is reduced, particularly from one passage to the next in the direction of the first fluid flow. Sometimes such first fluid flow helps to increase heat exchange while limiting head losses.

  Advantageously, the number of passages 25a, 25b, 25c is odd so as to optimize the relative position of the bottle 11 and the first fluid inlet 19i.

  The heat exchanger in this case allows the first fluid to flow from one of the first fluid passages 7 to the next first fluid passage 7 while avoiding the second fluid circuit. A plurality of collectors for a first fluid configured to enable. Similarly, in the heat exchanger 1, the second fluid passes from one of the second fluid passages 9 to the next second fluid passage 9 while avoiding the first fluid circuit. A plurality of collectors for a second fluid configured to allow flow are provided.

  The collector is defined by a plurality of ports provided with the plurality of plates 3. Each collector is disposed through the plate 3. In particular, each collector advantageously has a longitudinal main extension direction parallel to the stacking direction 5 of the plates 3. That is, the collector is arranged in parallel with the stacking direction 5 of the plates 3. More specifically, the bundle 1 comprises an inlet collector called a main inlet collector 51a for the first fluid to enter the first region 13, and the main inlet collector 51a is connected to a first fluid inlet manifold 19i. Is done. The bundle 1 also comprises an outlet collector, called a first intermediate collector 55, connected to the bottle 11, for the first fluid exiting the first region 13. The bundle 1 also comprises an inlet collector for the second fluid entering the first region 13 connected to the second fluid inlet manifold 18i.

  The bundle 1 further comprises an inlet collector for the first fluid entering the second region 15 from the bottle 11, called a second intermediate collector 51 b connected to the bottle 11. The bundle 1 also comprises an outlet collector 51c for the first fluid exiting the second region 15 called the main outlet collector 51c connected to the first fluid outlet manifold 19o. The bundle 1 also comprises an outlet collector for a second fluid connected to a second fluid outlet manifold 18o.

  The first intermediate collector 55 and the second intermediate collector 51 b are disposed in the bundle 1 between the first region 13 and the second region 15.

  The main inlet collector 51a, the main outlet collector 51c, the inlet collector for the second fluid to enter the first region, and the outlet collector for the first fluid to exit the second region are all a plurality of bundles 1 Along the side edges 18, the plates 3 are arranged parallel to the stacking direction 5.

  Note that the main inlet collector 51 a is connected to both the first fluid inlet manifold 19 i and each of the first fluid passages 7 inside the first region 13 of the bundle 1. The main outlet collector 51 c is connected to both the first fluid outlet manifold 19 o and each of the first fluid passages 7 inside the second region 15.

  It should also be noted that the first intermediate collector 55 allows the first fluid to flow from the first region 13 of the bundle 1 to the bottle 11. The second intermediate collector 51 b allows the first fluid to flow from the bottle 11 to each of the first fluid passages 7 in the second region 15 of the bundle 1.

  As shown in FIG. 2, when the exchanger has a plurality of passages, the bundle 1 further includes a third intermediate collector 53 for allowing the first fluid to flow through the plurality of passages. The third intermediate so as to allow a first fluid to flow directly between the third intermediate collector 53 and each of the first fluid passages 7 inside the first region 13. A collector 53 is provided.

  As described above, the first, second, and third intermediate collectors 55, 51 b, and 53 are arranged in parallel with each other between the first region 13 and the second region 15 in the bundle 1.

  Advantageously, in order to allow the first fluid to flow through a plurality of passages in the first region 13, in this case more specifically three passages, the main inlet collector 51 a and the intermediate collector 53. Each includes a separating partition 57. The separation partition wall 57 is, for example, a flat wall disposed on the collector in a direction crossing the longitudinal main extending direction of the collector. The separation partition wall 57 is disposed so as to separate the internal space of the collector into a plurality of longitudinal portions facing each other in the longitudinal main extending direction of the collector. The separating partition 57 is configured to restrict or actually prevent the flow of the first fluid between the two parts of the collector, and the parts are separated from each other by the separating partition 57.

  The plurality of separation partitions 57 are disposed in the respective collectors 51 a and 53, and as a result of the offset, the position of one of the separation partitions 57 in the main inlet collector 51 a and the separation in the third intermediate collector 53. The flow through the plurality of passages 25a, 25b, 25c in the stacking direction with respect to the position of the other one of the partition walls 57 is generated. Each separation partition 57 is configured to modify the direction of flow of the first fluid in the first region 13 of the bundle 1.

  As shown in FIGS. 4 to 9, each plate 3 includes a plurality of ports, each of which corresponds to one of the collectors of the bundle 1. Note that the plurality of ports are arranged in the same way on each plate 3, and when the plates 3 are stacked on top of each other, the superposition of the ports of the respective plates 3 defines each of the collectors of the bundle 1. Is done.

  In particular, the plate 3 includes a first intermediate port 75 and a second intermediate port 69b, where both the first intermediate port 75 and the second intermediate port 69b allow the first fluid to flow through the plate 3 and the bottle. 11 is allowed to flow between. The second intermediate port 69b corresponds to the collector 51b, while the first intermediate port 75 corresponds to the collector 55.

  According to the present invention, the first and second intermediate ports 69 b and 75 are aligned in a direction substantially transverse and / or perpendicular to the longitudinal main extending direction of the plate 3. In other words, the first and second ports 69b and 75 are centered on a straight line substantially transverse and / or perpendicular to the general and / or average direction of the first fluid flow. There is.

  In the case of a heat exchanger having several passages, the plate 3 further comprises an additional port 73 called a third intermediate port 73, which allows the flow through the passage, Aligned with the first intermediate port 75 and the second intermediate port 69b. In this case, the third intermediate port 73 corresponds to the third intermediate collector 53.

  The alignment of the intermediate ports 69b, 75, 73 along a straight line that is substantially transverse or perpendicular to the general direction of the first fluid flow is such that the flow and thus the heat exchange is small or indeed. Helps avoid the creation of one or indeed several regions that do not exist. This arrangement of the intermediate ports 69b, 75, 73 allows for better use of space by maximizing the heat exchange area.

  The intermediate ports 69 b, 73, 75 are preferably elongated in the longitudinal direction of the plate 3. Each of the intermediate ports 69b, 73, 75 advantageously extends between two longitudinal ends of the port which are opposite to each other in the longitudinal main extending direction of the plate. The intermediate ports 69b, 73, 75 have a width measured in a direction transverse to the longitudinal main extension direction, and the width decreases over substantially the entire length of the port between the two longitudinal ends. The portion of the port having the largest width is located upstream from the portion of the port having the smallest width in the direction of the second fluid flow.

  In other words, the intermediate ports 69b, 75, 73 are valve-shaped, with the widest part located upstream from the narrowest part in the direction of the second fluid flow.

  This shape of the intermediate ports 69b, 75, 73 helps reduce head loss caused by the second fluid flow on the plate 3 at the intermediate ports 69b, 75, 73.

  The plate 3 comprises several types of plates including a plurality of first plates 3a shown in FIGS. 4, 6 and 9 and a plurality of second plates 3b shown in FIGS. 3 is provided. The first plate 3a is provided so that the first fluid flows on the front surface thereof and the second fluid flows on the back surface thereof. The second plate 3b is provided so that the second fluid can flow on their front surfaces and the first fluid can flow on their back surfaces. By alternating one of the first plates 3a with one of the second plates 3b, the stacking of plates allows to form the first fluid circuit and the second fluid circuit. To do.

  The plates 3 are used in pairs, each pair of plates 3 including one of the first plates 3a and one of the second plates 3b.

  In particular, for the first fluid circuit, each first fluid passage 7 is defined by a flow space between one front surface of the first plate 3a and the back surface of the second plate 3b, and the 2 The first plate 3a and the second plate 3b are adjacent to each other. With respect to the second fluid, each of the second fluid passages 9 is defined by a flow space between one front surface of the second plate 3b and one rear surface of the first plate 3a, The two first plates 3a and the second plate 3b are adjacent to each other.

  In the case of the second plate 3b, each of the first intermediate port 73, the second intermediate port 69b and the third intermediate port 75 is a pressed region forming a dome-shaped region 73 ′, 69b ′ and 75 ′. And each of the dome-shaped regions 73 ′, 69b ′ and 75 ′ is disposed inside a flat region 67 forming the bottom of the plate. Further, in the flat region 67 between the dome-shaped regions 73 ′, 69 ′ and 75 ′ surrounding each port 73, 69b, 65, the second portion 150 of the second plate 3b is formed on the front surface of the plate. It should be noted that each second plate 3b is provided so that the second fluid can flow directly from the first portion 130. In other words, the second plate 3b allows the second fluid to bypass the ports 73, 69b, 75 on the front surface thereof, and thus not flow into the collectors 51b, 55, 53. , So as to be able to flow from the first part 130 to the second part 150 of the plate.

  The three dome-shaped regions 69b ', 75' and 73 'of the second plate are intended to correspond to the flat regions 69b ", 75" and 73 "of the adjacent first plate 3a, respectively. That is, the dome-shaped regions 69 ', 75' and 73 'and the flat regions 69b ", 75" and 73 "are intended to be brought into contact with each other once the plurality of plates 3 are stacked.

  In each of the first plates 3a, each of said intermediate ports 69b, 75 and 73 is arranged inside each of said flat regions 69 ", 75" and 73 ". Advantageously, said flat regions 69b", 75 "and 73" each have substantially the same shape and slightly larger dimensions for each intermediate port. That is, on the first plate 3a, each of the flat regions 69b ", 75" and 73 "surrounds a corresponding intermediate port 69b, 75 and 73.

  The flat regions 69b ″, 75 ″ and 73 ″ of the first plate 3a are substantially the same in shape and size as the dome-shaped regions 69b ′, 75 ′ and 73 ′ of the second plate 3b, and are flat regions. Promotes joint joining of 69b ", 75", 73 "and domed regions 69b ', 75', and 73 '.

  In particular, the front surfaces of the dome-shaped regions 69b ′, 75 ′ and 73 ′ of each second plate 3b are in contact with the back surfaces of the planar regions 69b ″, 75 ″ and 73 ″ of the adjacent first plate 3a. Is configured to do.

  The first plate 3a can be further distinguished as a first plate 3a ′ of the first type shown in FIG. 4 and a first plate 3a ″ of the second type shown in FIG. Combining one of the plates 3b with one of the first plates 3a ′ of the first type makes it possible to form a first type of pair. Combining with one of the two types of first plates 3a "makes it possible to form a second type of pair.

  The first type of plate pair is configured to allow the first fluid to flow through passages 25a and 25b, and indeed 25c. The second type of plate pair is configured to allow the first fluid to flow between the first and third intermediate collectors 53, 55 in the passage 25c. In other words, the passages 25a and 25b comprise a pair of first type plates 3, while the passage 25c comprises at least one pair of second type plates and optionally of the first type plates. Provide a pair.

  It should be noted that the second plate 3b is advantageously the same in all passages, and therefore the type of the pair of plates 3 is not important unless a partition wall 57 is provided, as will be explained in more detail below.

  In both types of pairs, the first plate 3a has a dome-shaped region 65 intended to contact the back surface of the second plate 3b on its front surface, in the flat region 67 of its second plate. A formed pressed area is provided. It should be noted that the dome-shaped region 65 of the first plate 3a is disposed between the first portion 130 and the second portion 150 of the plate 3a at the intermediate ports 69b, 75, 73. Similarly, the flat region 67 of the second plate 3 b is disposed between the portion 130 and the portion 150.

  In particular, the dome-shaped region 65 is formed from one of the side edges 34 of the first plate 3a so that the first fluid is prevented from passing directly from the first region 13 to the second region 15. Extending substantially laterally to the other of the side edges 34.

  In the first type pair, the domed region 65 of the first plate 3a ′ of the first type and the flat region 67 of the second plate are joined together when they are joined together. Is prevented from flowing between the first portion 13, the second intermediate port 69 b, and the first intermediate port 75, while the first fluid is between the first region 13 and the port 73. And to allow flow between the second intermediate port 69b and the second region 13.

  In other words, when the domed region 65 of the first plate 3a ′ of the first type and the flat region 67 of the second plate 3b are joined together, they are bundled with the first fluid. It is provided so as to prevent a flow between one first region 13 and the first and second intermediate collectors 55 and 51b.

  More specifically, in the first type of paired plates 3, the dome-shaped region 65 has a flat region 69 b ″ and a first region so as to isolate the second intermediate port 69 b from the first portion 13. First bypass the intermediate port 69b of the second port. The port 75 and the flat region 75 "are then completely surrounded by the dome-shaped region 65, the port 75 coming from both the first part 13 and the second part 15 Provided to be isolated. Finally, the dome-shaped region 65 bypasses the flat region 73 ″ and the third intermediate port 73, from the second portion 15 of the first plate 3a ′ of the first type to the third intermediate port 73. Isolate.

  The second type of pair, i.e. the pair placed in the final passage 25c, in this case, when the first fluid joins with the flat region 67 of the second plate 3b, the first fluid is in contact with the first region 13 and the second region 3c. The first type in that the dome-shaped region 65 of the first plate 3a ″ of the second type is provided this time so as to allow direct flow to and from one intermediate collector 55. That is, the second type of first plate 3 a ″ is provided to provide a passage between the first region 13 and the bottle 11.

  More specifically, in the second type of paired plate, the dome-shaped region 65 of the first plate 3a "of the second type first bypasses the flat region 69" and the second intermediate port 69b. Thus, the second intermediate port 69 b is isolated from the first portion 13. The flat region 75 ″ and the first intermediate port 75 are then separated from the second portion 15 of the second type first plate 3a ″ by the dome-shaped region 65. Finally, the flat area 73 ″ and the third intermediate port 73 are also separated from the second portion 15 of the second type first plate 3a ″ by the dome-shaped area 65.

  In FIG. 7, the second plate 3b differs from that shown in FIG. 5 in that the port 73 in this case comprises one of the separating partitions 57. Advantageously, in a heat exchanger having more than one passage, the bundle 1 comprises at least one such plate 3. Note that the plurality of separation partitions 57 are integral with the dome-shaped region 73 ′, for example.

  The second fluid flow is not affected by that type of plate 3 pair. A same type of passage is defined to guide the second fluid from the second fluid inlet collector to the second fluid outlet collector.

  Generally, the flow of each fluid in a pair of plates is constrained by a joint between the front surface of one dome-shaped region of the plates 3 and the back surface of the flat region of the adjacent plate 3, and the fluid It is allowed to be forced to bypass the department. In other words, the contact area between one of the domed areas and the flat surface is inaccessible to the first and second fluids.

  It should also be noted that the domed region 65 is provided to prevent the first fluid from flowing directly from one collector to another. In other words, the domed region 65 allows the first fluid to flow from one intermediate port to another intermediate port between the two plates 3 of a given pair, except for a second type of pair. It is further provided to prevent.

  Further, the plate 3 may be provided with a corrugated portion 77 on the bottom surface of the plate disposed so as to disturb the fluid and / or the contact point between the plates 3. The corrugations thus serve to improve the heat exchange between the first fluid and the second fluid.

  Alternatively, as shown in FIG. 2, the first region 13 of the heat exchanger defines a single-pass configuration. In this case, this configuration is obtained by using only the plurality of second plates 3b, and all of the plurality of second plates 3b include a plurality of separation partitions 57 as shown in FIG. A plurality of first plates 3a ″ of the second type as shown in FIG. 6 are provided.

  As a modification, as shown in FIGS. 10 and 11, a plurality of plates 3 not provided with a third intermediate port can be used.

  Advantageously, other features of the single pass heat exchanger are similar to those of the three pass heat exchanger.

Claims (10)

  A plurality of stacked plates (3), the plurality of plates intended to allow heat exchange between a second fluid and a first fluid flowing in contact with said plates (3); In a heat exchanger comprising a stacked plate (3), the exchanger comprises a bottle (11) for a first fluid, the plate (3) comprising the plate (3) and the bottle ( 11) is provided with a plurality of intermediate ports (69b, 75) that allow the first fluid to flow between them, the plurality of intermediate ports (69b, 75) being the longitudinal main of each plate (3). A heat exchanger arranged in a direction substantially transverse to the extending direction.   The plates (3) each have a first part for allowing heat exchange between the first fluid and the second fluid before the first fluid flows into the bottle (11). (130), and a second part (130) that allows heat exchange between the first fluid and the second fluid after the first fluid enters the bottle. 150), wherein the plurality of intermediate ports (69b, 75) are disposed between the first portion (130) and the second portion (150). The described heat exchanger.   The heat exchanger according to claim 2, wherein the first part (130) of the plate (3) defines a condensation region (13) and the second part (150) defines a sub-cooling region (15).   A first one of the plurality of intermediate ports (69b, 75) allows the first fluid to flow from the condensation region (13) to the bottle (11), and the plurality of intermediate ports (69b, 75) 75. The heat exchanger according to claim 3, wherein the second of 75) allows the first fluid to flow from the bottle (11) to the sub-cooling zone (15).   The plate (3) further comprises an additional port (73) called a through-flow port aligned with the first intermediate port and the second intermediate port (69b, 69b). A heat exchanger according to claim 1.   At least one through-flow port (73) of the plate (3), referred to as the second plate, allows the first fluid to flow through a plurality of passages in the condensation region (13). The heat exchanger according to claim 5, which is sealed.   The heat exchanger according to any one of claims 1 to 6, wherein the bottle (11) extends in the main direction of the plate.   The heat exchanger is provided with a plurality of inlet manifolds (19i) and a plurality of outlet manifolds (19o), and the bottles (11) and the manifolds (19i, 19o) are formed of a heat exchanger called an upper side. Heat exchanger according to any one of the preceding claims, arranged on the same side (17).   The heat exchanger according to any one of claims 1 to 8, wherein the plurality of intermediate ports (69b, 75) are vertically long and / or elongated in the direction of the flow of the second fluid (3). .   Each of the plurality of intermediate ports (69b, 75, 73) has a width measured in a direction transverse to the longitudinal main extending direction, and is substantially a port in the direction of the second fluid flow. 10. A heat exchanger according to claim 9, wherein the heat exchanger has a width that decreases over the entire length.

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