KR102038213B1

KR102038213B1 - Heat exchanger with laminated plate

Info

Publication number: KR102038213B1
Application number: KR1020177034075A
Authority: KR
Inventors: 제롬 모그니어; 게일 두르벡
Original assignee: 발레오 시스템므 떼르미끄
Priority date: 2015-04-27
Filing date: 2016-04-22
Publication date: 2019-10-29
Also published as: EP3289302B1; FR3035488B1; JP2018514741A; CN107949761A; KR20170140338A; JP6554182B2; WO2016173935A1; FR3035488A1; US20180120033A1; EP3289302A1

Abstract

The present invention relates to a heat exchanger comprising a plurality of laminated plates (3) for enabling heat exchange between the first and second circulating fluid when in contact with the plate (3), the exchanger being a bottle for the first fluid ( 11, wherein the plate 3 is provided with intermediate ports 69b, 75 that allow a first fluid to circulate between the plate 3 and the bottle 11, and the intermediate port 69b , 75 are arranged along a direction substantially transverse to the longitudinal main extension direction of each plate 3.

Description

Heat exchanger with laminated plate

The present invention relates to a stacked-plate heat exchanger, and more particularly to a condenser capable of heat exchange between a refrigerant and a liquid coolant.

BACKGROUND OF THE INVENTION Heat exchangers comprising heat exchange bundles comprising a series of plates stacked parallel to one another are known in the art. The plate stack forms a heat exchange surface between which coolant and coolant alternately flow through the fluid transfer circuit. Thus, the plate stack is constructed in such a way as to form two different circuits, a refrigerant circuit and a coolant circuit.

Known exchangers of this kind include a bottle for refrigerant and an exchanger further provided with a subcooling portion disposed downstream of the bottle.

In this case, the laminate is divided into two parts, the cooling section and the subcooling section, and the laminate is provided with two or more refrigerant flow ports in communication with the bottle. It is known to arrange these ports in a direction parallel to the longitudinal extension direction of the laminate.

However, the arrangement of the flow ports in this way has the disadvantage that on the surface of the plate, areas where the flow of refrigerant and consequently the heat exchange between the refrigerant and the coolant are low or not actually present are created.

One of the objects of the present invention is a heat exchanger comprising a plurality of laminated plates intended to enable heat exchange between a first fluid flowing in contact with a plate and a second fluid, the exchanger being configured to provide a bottle for the first fluid. Wherein the plate is provided with an intermediate port that allows a first fluid to flow between the plate and the bottle, the intermediate port disposed in a direction substantially transverse to the longitudinal major extension direction of the plate. By solving the above problem, the above-mentioned problem is solved.

Therefore, the flow direction of the refrigerant is transverse to the direction in which the intermediate ports are aligned, and the region where the heat exchange is low is limited.

According to different embodiments which can be taken together or separately:

Said plates each having two parts, the first fluid for enabling heat exchange between the first fluid and the second fluid before the first fluid moves into the bottle, and the first fluid after the first fluid has moved into the bottle. A second portion for enabling heat exchange between the second fluid and the second fluid, wherein the intermediate port is disposed between the first and second portions,

The first portion of the plate forms a condensation region and the second portion forms a subcooling region,

A first intermediate port of the intermediate ports allows a first fluid to flow from the condensation zone to the bottle, a second intermediate port of the intermediate ports enables the first fluid to flow from the bottle to the subcooling zone,

The plate further comprises an additional port, called a pass flow port, aligned with the first and second intermediate ports,

A pass flow port of at least one of the plates, called a secondary plate, is sealed to allow the first fluid to flow through several passes in the condensation region,

The bottle extends in the main direction of the plate,

The heat exchanger is provided with an inlet manifold and an outlet manifold, the bottle and the manifold being arranged on the same side of the heat exchanger, referred to as an upper side,

The intermediate port is oval and / or elongate in the direction of flow of the second fluid,

Each of the intermediate ports is measured in a direction transverse to the longitudinal main extension direction and has a width that is reduced over almost the entire length of the port in the flow direction of the second fluid.

The present invention will be more clearly understood by reading the following detailed description of one or more embodiments of the invention, which are provided by way of purely illustrative and non-limiting examples, and further objects, details, features, and advantages thereof will become more apparent. will be.
1 is a side view of a heat exchanger according to the present invention.
2 is a cross-sectional view along AA section of the heat exchanger according to the present invention in the first embodiment.
3 is a cross-sectional view along AA section of the heat exchanger according to the present invention in the second embodiment.
4 is a perspective view of a part of the front face of a plate of the first aspect according to the present invention in the first embodiment.
Fig. 5 is a perspective view of a part of the front face of a plate of the second form according to the present invention in the first embodiment.
6 is a perspective view of a part of the front face of a plate of a third form according to the present invention in the first embodiment.
7 is a perspective view of a part of the front face of a plate of a fourth form according to the invention, provided with a partition wall;
Fig. 8 is a perspective view of the front face of a plate of a second form according to the present invention in the first embodiment.
9 is a perspective view of the front face of a plate of a fourth form in the first embodiment.
10 is a perspective view of a plate of a first form according to the present invention in the second embodiment.
11 is a perspective view of a part of the front surface of a plate of a second form according to the present invention in the second embodiment.

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

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

As shown in FIGS. 2 and 3, the exchanger bundle 1 of plates 3 stacked in the stacking direction 5 to form passages 7, 9 for the first fluid and the second fluid. It includes, the fluid exchanges heat with each other. Advantageously, the particular plate 3 together with the other adjacent plate 3 forms a passage 7 for the first fluid and together with the other adjacent plate 3 forms a passage 9 for the second fluid. In other words, the first fluid passage 7 and the second fluid passage 9 alternately follow each other. In this case, the bundle 1 is in the shape of a parallelepiped.

In other words, the laminated plate 3 is designed to form together a first circuit for the flow of the first fluid and a second circuit for the flow of the second fluid, wherein the first fluid avoids the second circuit. And is designed to allow the second fluid to flow away from the first circuit. The first and second circuits comprise a first fluid passage 7 and a second fluid passage 9, respectively.

As shown in FIG. 1, the exchanger further comprises the first fluid bottle 11. In the case of a condenser, the bottle 11 is designed to separate the gas phase and liquid phase of the refrigerant such that only the liquid phase can flow downstream of the bottle 11. The bottle 11 may also include a filter and / or a dryer to filter and / or dry the first fluid.

The plate 3 comprises two portions 130 and 150 respectively, the first portion 130 being capable of heat exchange between the first fluid and the second fluid before the first fluid moves into the bottle 11. And the second portion 150 is designed to allow heat exchange between the first fluid and the second fluid after the first fluid moves into the bottle 11.

The first portion 130 and the second portion 150 of the plate 3 form a first region 13 and a second region 15 in the bundle, respectively. In the case of a condenser, the first region 13 is a condensation region and the second region 15 is a subcooling 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 of the first region 13 and the first fluid passage of the second region 15.

As shown in Figs. 8 and 9, the laminated plate 3 is, for example, rectangular in shape. The plate 3 comprises a lower edge 31 and an upper edge 32 respectively and advantageously extends in the longitudinal major extension direction between the edges 31 and 32, the longitudinal extension direction being advantageously bottled. Is parallel to the longitudinal extension of. The lower edge 31 and the upper edge 32 oppose each other along the longitudinal main extension direction. The plate 3 also includes two longitudinal edges 34 extending longitudinally between the lower edge 31 and the upper edge 32. The plate 3 also includes a raised edge 30 around it. The plates 3 are designed to be arranged in contact with each other, for example brazing at the raised edge 30. The plate 3 has two sides, namely a front side and a back side, and the raised edge 30 is disposed on the front side of each plate 3. In other words, the raised edge 30 protrudes from the front side of each plate 3.

The plate 3 is obtained, for example, by chasing, punching and / or molding a rolled metal sheet, for example 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 flows continuously through the first region 13, the bottle 11, and the second region 15 of the bundle 1. .

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

As shown in FIG. 1, the manifold and the bottle 11 are advantageously arranged on the same side of the heat exchanger. In this case, the inlet and outlet manifolds 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 to allow the first fluid to enter the bundle 1 through the first fluid inlet manifold 19i. The first fluid then flows through the first region 13, then flows through the bottle 11 and returns to the bundle 1, in which flow through the second region 15. The first fluid finally exits the bundle 1 through the first fluid outlet manifold 19o.

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

The bottle 11 advantageously extends parallel to the upper side 17 of the bundle 1. The bottle 11 is in this case located between the manifolds 19i and 19o. Thus, depending on the effective length of the bottle 11, the cross section of the bottle 11 is adapted to obtain a predetermined volume. This possibility of changing the volume of the bottle 11 by changing the cross section of the bottle means that the manifolds 19i and 19o are more easily accessible. This configuration enables a high level of integration and allows the use of the bottle 11 which is easy to manufacture.

The heat exchanger may also comprise a reinforcement plate 49 on the upper side 17, for example.

As shown in FIG. 2, the bundle 1 advantageously forms several passes for the first fluid in the first region 13, in this case three passes 25a, 25b, 25c. do. The passes 25a, 25b, 25c are configured such that the first fluid flows continuously from one pass to the next in this order, and redirects between each pass. This flow of the first fluid is such that the number of passes associated with each pass is the next pass in one pass in the flow direction of the first fluid, in particular when the first region 13 is for example a condensation region of the first fluid. When decreasing, it helps to increase heat exchange while limiting head loss.

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

The heat exchanger in this case comprises a collector for a first fluid configured to enable the first fluid to flow from one of the first fluid passages 7 into the next first fluid passage 7, avoiding the second fluid circuit. Include. Similarly, the heat exchanger 1 is for a second fluid configured to allow the second fluid to flow from one of the second fluid passages 9 into the next second fluid passage 9, avoiding the first fluid circuit. Contains a collector.

The collectors are formed by ports provided on the plate 3. Each collector is arranged through the plate 3. In particular, each collector advantageously has a longitudinal major extension direction parallel to the stacking direction 5 of the plate 3. In other words, the collectors are arranged parallel to the stacking direction 5 of the plate 3. More specifically, the bundle 1 comprises an inlet collector, referred to as the main inlet collector 51a, for the first fluid to enter the first region 13, the main inlet collector 51a being the first Is connected to the fluid inlet manifold 19i. The bundle 1 also comprises an outlet collector, referred to as a first intermediate collector 55, for the first fluid to exit the first region 13, which is connected to the bottle 11. The bundle 1 also comprises an inlet collector for the second fluid to enter the first region 13, which is connected to the second fluid inlet manifold 18i.

The bundle 1 further comprises an inlet collector, referred to as a second intermediate collector 51b, for the first fluid to enter the second region 15 from the bottle 11, which collector 11. ) The bundle 1 also comprises an outlet collector 51c, referred to as the main outlet collector 51c, for the first fluid to exit the second region 15, which collector comprises a first fluid outlet manifold ( 19o). The bundle 1 also includes an outlet collector for the second fluid which is connected to the second fluid outlet manifold 18o.

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

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 stacked on the plate 3. Parallel to the direction 5, it is disposed along the side edge 18 of the bundle 1.

Note that the main inlet collector 51a is not only connected to the first fluid inlet manifold 19i but also to each of the first fluid passages 7 inside the first region 13 of the bundle 1. The main outlet collector 51c is not only connected to the first fluid outlet manifold 19o but also to each of the first fluid passages 7 inside the second region 15.

It should also be appreciated that the first intermediate collector 55 allows the first fluid to flow from the first region 13 of the bundle 1 into the bottle 11. The second intermediate collector 51b 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 several passes, the bundle 1 further comprises a third intermediate collector 53 for the first fluid to flow through the several passes. The third intermediate collector 53 is designed such that a first fluid can flow directly between the third intermediate collector 53 and each of the first fluid passages 7 inside the first region 13.

The first, second and third intermediate collectors 55, 51b, 53 are thus arranged between the first region 13 and the second region 15 which are parallel to each other in the bundle 1.

Advantageously, the main inlet collector 51a and the intermediate collector 53, in order to allow the first fluid to flow through several passes in the first region 13, in this case more specifically through three passes. Each includes a separating partition (57). The separating partition 57 is, for example, a flat wall disposed in the collector in an orientation transverse to the longitudinal main extension direction of the collector. The separating partition wall 57 is configured to separate the inner space of the collector into longitudinal portions facing each other in the longitudinal main extending direction of the collector. The separating partitions 57 are configured to limit or actually prevent the flow of the first fluid between the two parts of the collector, the parts being separated from each other by the separating partitions 57.

The separating partition 57 is an offset in the stacking direction between the position of one of the separating partitions 57 in the main inlet collector 51a and the position of the other of the separating partitions 57 in the third intermediate collector 53. As a result, it is arranged in each collector 51a, 53 to generate the flow through several passes 25a, 25b, 25c. Each separation partition 57 is configured to change the flow direction of the first fluid in the first region 13 of the bundle 1.

As shown in FIGS. 4 to 9, the plates 3 each comprise a plurality of ports, each corresponding to one of the collectors of the bundle 1. The plurality of ports are equally arranged on each plate 3 such that when several plates 3 are stacked up and down, the overlap of the ports of each plate 3 forms each of the collectors of the bundle 1. You should know that

In particular, the plate 3 comprises a first intermediate port 75 and a second intermediate port 69b, both of which have a first fluid flowing between the plate 3 and the bottle 11. To do it. The first intermediate port 75 corresponds to the collector 55 and the second intermediate port 69b corresponds to the collector 51b.

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

In the case of a heat exchanger with several passes, the plate 3 further comprises an additional port 73, referred to as a third intermediate port 73, the third intermediate port 73 passing several passes. Enable flow through and are aligned with the first intermediate port 75 and the second intermediate port 69b. The third intermediate port 73 in this case 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 orthogonal to the general flow direction of the first fluid is characterized by the singular or indeed plural regions of which the flow and thus the heat exchange is low or not actually present. It helps to avoid creation. This arrangement of the intermediate ports 69b, 75, 73 allows for better use of the space by maximizing the heat exchange area.

The intermediate ports 69b, 73, 75 are advantageously oval and elongate in the longitudinally extending direction of the plate 3. Each of the intermediate ports 69b, 73, 75 advantageously extends between two longitudinal ends of the port opposite each other in the longitudinal main extending direction of the plate. The intermediate ports 69b, 73, 75 are measured in a direction transverse to the longitudinal main extension direction and have a width that is reduced over almost the entire length of the port between the two longitudinal ends. The portion of the port with the largest width is located upstream from the portion of the port with the minimum width in the flow direction of the second fluid.

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

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

The plate 3 comprises several types of plates 3 having a primary plate 3a shown in FIGS. 4, 6 and 9 and a secondary plate 3b shown in FIGS. 5, 7 and 8. Include. The primary plate 3a is designed such that the first fluid flows over its front face and the second fluid flows over its back face. The secondary plate 3b is designed such that the second fluid can flow over its front face and the first fluid can flow over its back face. Alternating one of the primary plates 3a with one of the secondary plates 3b allows the plate stack to create the first fluid and the second fluid circuit.

The plates 3 are used in pairs, each pair of plates 3 comprising one of the primary plates 3a and one of the secondary plates 3b.

In particular, with respect to the first fluid circuit, each first fluid passage 7 is formed by a flow space between the front side of one of the primary plates 3a and the rear side of one of the secondary plates 3b, the two Primary plates 3a and secondary plates 3b are adjacent to each other. With respect to the second fluid circuit, each second fluid passage 9 is formed by a flow space between the front side of one of the secondary plates 3b and the rear side of one of the primary plates 3a, wherein the two primary The plate 3a and the secondary plate 3b are adjacent to each other.

In the case of the secondary plate 3b, each of the first intermediate port 73, the second intermediate port 69b and the third intermediate port 75 is a domed zone 73 ', 69b', 75 '. And each of the domed sections 73 ', 69b', 75 'is arranged inside a flat section 67 forming the bottom of the plate. In addition, each secondary plate 3b is flat between the domed sections 73 ', 69b', 75 'in which the second fluid surrounds each port 73, 69b, 65 at the front of the plate. It should be noted that in zone 67 it can flow directly from the first portion 130 of the secondary plate 3b to the second portion 150. In other words, the secondary plate 3b is the first portion of the plate without the second fluid bypassing each of the ports 73, 69b, 75 at its front face and not flowing into the collectors 51b, 55, 53. It is designed to be able to flow from 130 to the second portion 150.

The three domed sections 69b ', 75', 73 'of the secondary plate are intended to correspond to the flat sections 69b ", 75", 73 "of the adjacent primary plate 3a, respectively. Zones 69b ', 75', 73 'and the flat zones 69b ", 75", 73 "are intended to contact when the plates 3 are laminated to each other.

In each of the primary plates 3a, the intermediate ports 69b, 75, 73 are respectively disposed inside the flat zones 69b ", 75", 73 ", respectively. Advantageously, the flat areas 69b", 75 ", 73") each have approximately the same shape as each intermediate port and slightly larger dimensions. In other words, on the primary plate 3a, each of the flat zones 69b ", 75", 73 "surrounds the corresponding intermediate port 69b, 75, 73.

The flat sections 69b ", 75", 73 "of the primary plate 3a facilitate the joining of the flat sections 69b", 75 ", 73" and the domed sections 69b ', 75', 73 '. To the domed sections 69b ', 75', 73 'of the secondary plate 3b.

In particular, the front face of the domed sections 69b ', 75', 73 'of each secondary plate 3b is in contact with the rear face of the flat sections 69b ", 75", 73 "of the adjacent primary plate 3a. It is composed.

The primary plate 3a may further be distinguished from the primary plate 3a 'of the first form shown in figure 4 and the primary plate 3a "of the second form shown in figure 6. Secondary plate 3b ) May be combined with one of the primary plates 3a 'of the first form to form a pair of the first form, one of the secondary plates 3b to one of the primary plates 3a "of the second form. In combination with, a second type of pair can be formed.

The pair of plates of the first form are configured such that the first fluid can flow through the paths 25a, 25b and actually through the path 25c. The plate pair of the second form is configured such that the first fluid can flow between the first and third intermediate collectors 53, 55 in the pass 25c. In other words, the passes 25a and 25b comprise a pair of plates 3 of the first form and the passes 25c comprise at least one pair of plates 3 of the second form, in some cases the first form. Includes a pair of plates.

It should be noted that the secondary plate 3b is advantageously the same in every pass and therefore the shape of the pair of plate 3 is not important unless the partition 57 is discussed in more detail below.

In both types of pairs, the front face of the primary plate 3a is provided with a compression zone formed by the domed zone 65 intended to contact the back face of the secondary plate 3b in the flat region 67 of the secondary plate 3a. The domed region 65 of the primary 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. Likewise, the flat area 67 of the secondary plate 3b is disposed between the part 130 and the part 150.

In particular, the domed region 65 extends substantially transversely from one of the side edges 34 of the primary plate 3a to the other side edge 34, so that the first fluid is formed in the first region 13. Passing directly from to the second region 15 is prevented.

In a pair of first forms, the domed region 65 of the primary plate 3a ′ of the first form and the flat region 67 of the secondary plate, when joined together, have a first fluid in the first portion 13. And flow between the second intermediate port 69b and the first intermediate port 75 and the first fluid between the first region 13 and the port 73 and the second intermediate port 69b and the second region It is designed to allow flow between (13).

In other words, the domed region 65 of the primary plate 3a ′ of the first form and the flat region 67 of the secondary plate 3b have a first fluid when the first fluid of the bundle 1 is joined together. It is designed to prevent flow between the region 13 and the first and second intermediate collectors 55, 51b.

More specifically, in the plate pair 3 of the first type, the domed region 65 firstly flattens the region 69b "in a manner that isolates the second intermediate port 69b from the first portion 13 and Bypasses the second intermediate port 69b. The port 75 and the flat area 75 "are then designed to isolate the port 75 from both the first portion 13 and the second portion 15. It is completely surrounded by the domed area 65. Finally, the domed zone 65 is a flat zone 73 " and a third intermediate in a manner that separates the third intermediate port 73 from the second portion 15 of the primary plate 3a 'of the first type. Bypass port 73.

The pair of the second type, ie the pair arranged in the final pass 25c, is in this case the domed area 65 of the primary plate 3a "of the second type, in this case the flat area 67 of the secondary plate 3b. It is different from the first type of pairs in that it is designed to allow the first fluid to flow directly between the first region 13 and the first intermediate collector 55 when combined with the first type. 3a ″ is designed to provide a passage between the first region 13 and the bottle 11.

More specifically, in the pair of plates of the second form, the domed region 65 of the primary plate 3a "of the second form firstly isolates the second intermediate port 69b from the first portion 13. Bypasses the flat zone 69b " and the second intermediate port 69b. The flat zone 75 "and the first intermediate port 75 are then separated from the second portion 15 of the primary plate 3a" of the second type by the domed zone 65. Finally, the flat zone 73 ″ and the third intermediate port 73 are also separated from the second portion 15 of the primary plate 3a ″ of the second form by the domed zone 65.

In FIG. 7, the secondary plate 3b differs from that shown in FIG. 5 in that the port 73 is provided with one of the separating partitions 57 in this case. Advantageously, in a heat exchanger having more than one pass, the bundle 1 comprises one or more such plates 3. It should be noted that the separating partition 57 is integral with, for example, the domed region 73 '.

The flow of the second fluid is not affected by the shape of the plate 3 pair. A passage of the same type is formed which guides the second fluid from the second fluid inlet collector to the second fluid outlet collector.

In general, the flow of each fluid in a pair of plates is constrained by the bonding between the front of the domed section of one of the plates 3 and the back of the flat section of the adjacent plate 3, the fluid being Forced to bypass the junction is observed. In other words, the contact area between one of the domed zones and the flat surface is inaccessible to the first and second fluids.

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

The plate 3 may also be provided with a pleat 77 on the plate bottom which is configured to create a point of contact between the obstacle in the fluid and / or the plate 3. The corrugation thus helps to improve heat exchange between the first fluid and the second fluid.

Alternatively, as shown in FIG. 2, the first region 13 of the heat exchanger has a single-pass configuration. This configuration is obtained in this case by using only the secondary plate 3b provided with all the separating partitions 57 shown in FIG. 7, and the primary plate 3a "of the second type shown in FIG.

As a variant, as shown in Figs. 10 and 11, a plate 3 without any third intermediate port may be used.

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

Claims

In a heat exchanger comprising a plurality of laminated plates (3) intended to enable heat exchange between a first fluid and a second fluid flowing in contact with the plate (3),
The exchanger includes a first fluid bottle (11), and the plate (3) has intermediate ports (69b, 75) for allowing the first fluid to flow between the plate (3) and the bottle (11). And the intermediate ports 69b, 75 are arranged in a direction substantially transverse to the longitudinal main extension direction of each plate 3,
The plate 3 further comprises an additional port 73, referred to as a pass flow port, which is aligned with the intermediate ports 69b, 75 in the longitudinal major extension of the plate 3,
Pass flow ports 73 of one or more of the plates 3, referred to as secondary plates, are sealed to allow the first fluid to flow through several passes in the condensation region 13,
An intermediate collector 53 is connected to the pass flow port 73, and the intermediate collector 53 allows each of the plurality of passes inside the intermediate collector 53 and the condensation region 13 in which the first fluid flows. Configured to allow direct flow between
heat exchanger.

The method of claim 1,
The plate 3 has two portions 130, 150, respectively, a first portion 130 to enable heat exchange between the first fluid and the second fluid before the first fluid moves into the bottle 11. And form a second portion 150 to enable heat exchange between the first fluid and the second fluid after the first fluid has moved into the bottle 11, wherein the intermediate ports 69b, 75 are And disposed between the first portion 130 and the second portion 150.
heat exchanger.

The method of claim 2,
The first portion 130 of the plate 3 forms the condensation region 13 and the second portion 150 forms the subcooling region 15.
heat exchanger.

The method of claim 3, wherein
The first intermediate port of the intermediate ports 69b and 75 allows the first fluid to flow from the condensation region 13 into the bottle 11 and the second intermediate port of the intermediate ports 69b and 75 may be It is characterized in that one fluid is allowed to flow from the bottle 11 into the subcooling zone 15.
heat exchanger.

delete

The method according to any one of claims 1 to 4,
The bottle 11 is characterized in that it extends in the longitudinal main extending direction of the plate
heat exchanger.

The method according to any one of claims 1 to 4,
The heat exchanger is provided with an inlet manifold 19i and an outlet manifold 19o, and the bottle 11 and the manifolds 19i, 19o are arranged on the same side 17 of the heat exchanger, referred to as the top side. Characterized in that
heat exchanger.

The method according to any one of claims 1 to 4,
The intermediate ports 69b and 75 are oval or elongate in the flow direction of the second fluid 3.
heat exchanger.

The method of claim 9,
Each of said intermediate ports 69b and 75 has a width measured in a direction transverse to said longitudinal main extension direction and reduced over almost the entire length of the port in the flow direction of said second fluid;
heat exchanger.