A plate forming part of a heat exchanger, and a heat exchanger comprising at least one such plate

Abstract

The present invention relates to a plate (105) forming part of a heat exchanger and intended to define at least one channel (111) for fluid flow. The plate (105) extends primarily along a longitudinally extending axis (A1). The plate (105) includes at least one bottom (106), at least one first lateral raised edge (109a) inscribed in a first plane (P1) intersecting the longitudinally extending axis (A1), and at least two openings (110) configured to allow fluid to enter and exit the channel (111), respectively. The bottom (106) is provided with a rib (113) extending longitudinally from the first lateral raised edge (109a). The rib (113) is located between the two openings (110). The rib (113) has a sinusoidal configuration.

Description

Technical Field

[0001] This invention relates to a plate forming part of a heat exchanger. The subject matter relates to such a plate, and a heat exchanger having at least one such plate. Background Technology

[0002] In the automotive industry, it is often necessary to change the temperature of components such as electric motors, batteries, and heat and / or cold storage devices. For this purpose, motor vehicles are equipped with a refrigerant circuit in which a refrigerant flows and a heat transfer fluid circuit in which a heat transfer fluid flows. The refrigerant circuit includes a compressor for compressing the refrigerant, a heat exchanger for cooling the refrigerant at constant pressure, an expansion member that allows the refrigerant to expand, and a heat exchanger arranged to allow heat transfer between the refrigerant and the heat transfer fluid.

[0003] A heat exchanger is an exchanger formed by plates of tubes stacked and connected together to form flow channels defining a refrigerant or heat transfer fluid. The heat exchanger is a U-shaped heat exchanger, wherein the flow paths of the refrigerant and heat transfer fluid are arranged in a U-shape. For this purpose, the plates are provided with ribs that define branches of the U and are located between the branches. The plates include at least two openings for supplying the heat transfer fluid or refrigerant to the flow channels. The flow channels provide a channel cross-section for the heat transfer fluid or refrigerant, which is a surface perpendicular to the plane extending from the plate and perpendicular to the longitudinal axis of the plate.

[0004] The first problem lies in the poor distribution of the refrigerant and / or heat transfer fluid within the flow path. This poor distribution reduces the heat transfer efficiency between the refrigerant and the heat transfer fluid.

[0005] The second problem is that the refrigerant and / or heat transfer fluid have too high a flow velocity in the flow channel, which also minimizes the heat transfer between the refrigerant and the heat transfer fluid.

[0006] As is well known, protrusions are formed within a flow channel to disrupt the flow of refrigerant and / or heat transfer fluid within the flow channel. The protrusions are obtained by deformation of at least one of the plates.

[0007] However, the distribution of refrigerant and / or heat transfer fluid within the flow channel remains poor, and the flow velocity of the refrigerant and / or heat transfer fluid within the flow channel is too high, at least in the region of the channel cross-section containing the refrigerant and / or heat transfer fluid. This region of excessive flow velocity is, for example, a corridor formed between protrusions and ribs included in the plate. Summary of the Invention

[0008] One object of the present invention is to provide a plate forming part of a heat exchanger that allows for optimized distribution of refrigerant and / or heat transfer fluid within a flow channel partially defined by the plate.

[0009] Another object of the present invention is to provide a plate forming part of a heat exchanger, which reduces the flow velocity of the refrigerant and / or heat transfer fluid in a specific region where the flow velocity of the refrigerant and / or heat transfer fluid in the flow channel is determined to be too high.

[0010] Another object of the present invention is to provide a specific arrangement of plates forming part of a heat exchanger, wherein the flow path is arranged in a U-shape, particularly for heat exchangers between a refrigerant and a heat transfer liquid.

[0011] Another object of the present invention is to provide a heat exchanger comprising at least one such plate, the heat exchanger being a heat exchanger between a refrigerant and a heat transfer liquid, for example, a heat exchanger between a refrigerant circuit and a heat transfer liquid circuit.

[0012] The plate of the present invention is a plate forming part of a heat exchanger and is intended to define at least one channel for fluid flow. The plate extends primarily along a longitudinal axis. The plate includes at least one bottom, at least one first laterally raised edge tangentially in a first plane intersecting the longitudinally extending axis, and at least two openings configured to allow fluid to enter and exit the channel, respectively. The bottom is provided with ribs extending longitudinally from the first laterally raised edge. The ribs are located between the two openings.

[0013] According to the present invention, the rib has a sinusoidal structure.

[0014] The plate advantageously includes at least one of the following technical features, used alone or in combination:

[0015] - The ribs generally have a sinusoidal shape.

[0016] The rib has a series of ridges and depressions visible in a plane parallel to the bottom plane inscribed therein, which intersects the rib. The rib has corrugations within said plane.

[0017] - The first lateral protruding edge extends in a first plane, which is transverse to the bottom plane extending from the bottom.

[0018] - The first lateral protruding edge extends in a first plane that intersects the bottom plane and the longitudinal extension axis of the plate.

[0019] - The first plane forms a first angle between 91° and 140° with the bottom plane, preferably between 91° and 95°.

[0020] - The plate includes a bottom defined by a raised edge, the raised edge comprising at least two longitudinal raised edges and at least two lateral raised edges formed opposite each other, the two longitudinal raised edges and the two lateral raised edges together forming the periphery of the bottom.

[0021] - The ribs are arranged to give the channel a U-shaped profile.

[0022] - The channel is shaped into a U-shape, with its branches parallel to the longitudinal raised edges of the plate, and its base located near a second lateral raised edge, which is longitudinally opposite to the first lateral raised edge.

[0023] - Ribs are formed at the same distance (±5%) from the two longitudinal raised edges of the plate, the distance being measured between the center of the rib and one of the longitudinal edges of the plate.

[0024] - The rib is offset by a non-zero distance relative to the center plane of the plate, and the center plane is orthogonal to the bottom plane and parallel to the longitudinal extension axis of the plate.

[0025] - The plate is made of a stampable metal material, which is selected from thermally conductive metals, particularly aluminum or aluminum alloys, to specifically form ribs and protrusions by stamping.

[0026] The rib includes two longitudinal ends, wherein the first longitudinal end contacts the edge of the first lateral protrusion, and the second longitudinal end is disposed at a non-zero distance from the edge of the second lateral protrusion.

[0027] - The first longitudinal end and the second longitudinal end of the rib are aligned along a first direction parallel to the longitudinal extension axis of the plate.

[0028] - A rib has a vertex located between the edges of two ribs.

[0029] - The vertex is inscribed in a plane parallel to the bottom plane.

[0030] -At least one rib edge includes alternating successive convex and concave portions.

[0031] - Each rib edge has a corrugated sheet shape.

[0032] - The rib width used between the two rib edges and parallel to the bottom plane inscribed therein is constant from one longitudinal end of the rib to the other.

[0033] The bottom of the plate has multiple protrusions.

[0034] The first distance between the crown of the rib's protrusion and the laterally protruding protrusion closest to the crown is between 200% and 300% of the second distance, which is between the recess of the rib's concave portion and the laterally protruding protrusion closest to the recess. Thus, the laterally protruding protrusion closest to the recess is positioned in a corridor, which is formed between a rib edge and the longitudinal row of protrusions closest to the crown.

[0035] - The protrusions are organized into multiple rows of straight protrusions, which are formed along a second direction parallel to the lateral extension axis of the plate.

[0036] - Two consecutive straight lines intersect the concave and convex portions of the groove, respectively.

[0037] - The protrusions are organized into multiple rows of inclined protrusions, which are formed along a third direction that is substantially orthogonal to the second direction.

[0038] - Two consecutive sloping lines intersect the concave and convex parts of the groove, respectively.

[0039] The plate has four openings: one opening is formed between the rib and the first longitudinal edge, one opening is formed between the rib and the second longitudinal edge, and two openings are formed between the first longitudinal edge and the second longitudinal edge.

[0040] - The opening is round.

[0041] The present invention also relates to a heat exchanger comprising at least one such plate.

[0042] The heat exchanger advantageously includes at least one of the following technical features, used individually or in combination:

[0043] - Two plates, one joined to the other, and space is provided between the two plates to form a flow channel for fluid.

[0044] According to one design variation, at least three plates are internally joined together and define a first channel and a second channel in pairs, the first channel being configured for use with a heat transfer fluid and the second channel being configured for use with a refrigerant.

[0045] The heat exchanger includes a first flow path for a refrigerant circuit in which the refrigerant flows and a second flow path for a heat transfer liquid to flow therethrough. The first and second flow paths are arranged to allow heat exchange between the refrigerant and the heat transfer liquid. For this purpose, the bottom includes a first surface adjacent to the first flow path and a second surface adjacent to the second flow path.

[0046] - The first and second flow paths are arranged in a U-shape.

[0047] - The heat transfer fluid circuit includes a heat exchanger that can exchange heat energy with components to be cooled and / or heated, such as electric motors, batteries, heat storage and / or cold storage devices, etc. Attached Figure Description

[0048] Other features, details, and advantages of the invention will become clearer from the accompanying drawings and from the following description, which is provided by way of example, wherein:

[0049] Figure 1 It is a schematic diagram of a device including at least one heat exchanger according to the present invention;

[0050] Figure 2 It is participation Figure 1 A schematic diagram of the heat exchanger of the device shown.

[0051] Figure 3 It is formed Figure 2 A schematic front view of a plate representing a portion of the heat exchanger shown.

[0052] Figure 4 yes Figure 3 A perspective view of the plate shown;

[0053] Figure 5 yes Figure 3 and 4 A perspective cross-sectional view of the plate shown.

[0054] Figure 6 yes Figures 3 to 5 A cross-sectional schematic diagram of the ribs provided with the plate shown. Detailed Implementation

[0055] First, it should be noted that the accompanying drawings illustrate the invention in detail for the purpose of implementing the invention, and the drawings can, of course, be used to better define the invention if necessary.

[0056] exist Figure 1 In this context, motor vehicles are equipped with components 1 that must be cooled or heated, for example, to optimize their function. Such components 1 are particularly electric motors or internal combustion engines for at least partially propelling the motor vehicle, batteries for storing electrical energy, devices for storing heat and / or cold energy, etc. For this purpose, the motor vehicle is equipped with a device 2, which includes a refrigerant circuit 3 and a heat transfer liquid circuit 5. A refrigerant 4, such as carbon dioxide, flows in the refrigerant circuit 3, and a heat transfer liquid 6, particularly ethylene glycol water, flows in the heat transfer liquid circuit 5. The device 2 includes at least one heat exchanger 11 according to the invention. To better understand the invention, the device 2 is described below; however, the features of the device 2 described do not limit the heat exchanger 11 of the invention. In other words, the device 2 can have different structural features and / or operating modes than those described, without departing from the rules of the invention.

[0057] The refrigerant circuit 3 includes a compressor 7 for compressing the refrigerant 4, a refrigerant / external air exchanger 8 (e.g., placed at the front of a motor vehicle) for cooling the refrigerant 4 at a constant pressure, an expansion member 9 for allowing the refrigerant 4 to expand, and a heat exchanger 11 arranged to allow heat transfer between the refrigerant 4 and the heat transfer liquid 6.

[0058] Element 1 is connected to heat exchanger 14, which can change the temperature of element 1, especially through direct contact between element 1 and heat exchanger 14, which is part of heat transfer liquid circuit 5.

[0059] The heat transfer liquid circuit 5 includes a pump 15 for circulating the heat transfer liquid 6 within the circuit. The heat transfer liquid circuit 5 also includes a heat exchanger 11, which is also part of the refrigerant circuit 3. The heat exchanger 11 includes at least one first flow path 21 for the refrigerant 4 and at least one second flow path 22 for the heat transfer liquid 6. The first and second flow paths 21 are arranged to allow heat exchange between the refrigerant 4 present within the first flow path 21 and the heat transfer liquid 6 present within the second flow path 22. Preferably, the heat exchanger 11 has several first flow paths 21 and several second flow paths 22. A first flow path 21 is located between two second flow paths 22, and a second flow path 22 is located between two first flow paths 21. Therefore, the heat exchanger 11 has an alternating arrangement of first and second flow paths 21 and 22.

[0060] Within the heat transfer liquid loop 5, the heat transfer liquid 6 flows from the pump 15 to the heat exchanger 11, then flows within the heat exchanger 11, exchanging heat energy with the refrigerant 4 present in the first flow path 21 using the second flow path 22, then flows within the heat exchanger 14, and then returns to the pump 15.

[0061] Within the refrigerant circuit 3, refrigerant 4 flows from compressor 7 to refrigerant / external air exchanger 8, and then to expansion member 9. The refrigerant 4 then flows within heat exchanger 11 via first flow path 21, exchanging heat energy with heat transfer liquid 6 present in second flow path 22, and then returns to compressor 7.

[0062] exist Figure 2In this heat exchanger 11, the overall shape is a parallelepiped, and it includes an end plate 100. The end plate 100 has a heat transfer liquid inlet 101 through which the heat transfer liquid 6 enters the interior of the heat exchanger 11. The end plate 100 also has a heat transfer liquid outlet 102 through which the heat transfer liquid 6 exits from the heat exchanger 11. A second flow path 22 extends between the heat transfer liquid inlet 101 and the heat transfer liquid outlet 102. The end plate 100 also has a refrigerant inlet 103 and a refrigerant outlet 104. The refrigerant 4 enters the interior of the heat exchanger 11 through the refrigerant inlet 103 and exits from the heat exchanger 11 through the refrigerant outlet 104. A first flow path 21 extends between the refrigerant inlet 103 and the refrigerant outlet 104.

[0063] Heat exchanger 11 is a plate heat exchanger, which includes multiple plates 105, for example Figure 3 The plates 105 are shown. One plate 105 is joined inside the other to jointly define a conduit 123 that guides the flow of refrigerant 4 or heat transfer fluid 6. In other words, the two plates 105 forming the conduit 123 jointly define a channel 111 dedicated to the flow of refrigerant 4 or heat transfer fluid 6. More specifically, one side of plate 105 is adjacent to the channel 111 for the flow of heat transfer fluid 4, while the other side of the same plate 105 is adjacent to the channel 111 for the flow of heat transfer fluid 6. Thus, the plates 105 are arranged to each other in a manner that alternately constructs the channels 11 for the flow of refrigerant 4 and heat transfer fluid 6.

[0064] Plate 105 extends primarily along a longitudinal extension axis A1. Plate 105 includes a bottom 106 and at least one raised edge 107 surrounding the bottom 106. The bottom 106 extends within a bottom plane P5. The raised edge 107 is formed at the periphery of the bottom 106 and surrounds the bottom 106. The raised edge 107 intersects the bottom plane P5. It should be understood that plate 105 is arranged within a generally rectangular barrel, the bottom of which is formed by the bottom 106, and the edge of which is formed by the raised edge 107.

[0065] The plates 105 are designed to be stacked in such a way that the bottoms 106 of the plates 105 are arranged parallel to each other and spaced apart. The raised edges 107 of the two plates 105 nested inside each other contact each other and are designed to be welded to each other to ensure the sealing of the channel 111 formed between the two adjacent plates 105.

[0066] More specifically, the raised edge 107 includes two longitudinal raised edges 108a and 108b, namely a first longitudinal raised edge 108a and a second longitudinal raised edge 108b that are opposite to each other. The raised edge 107 also includes two lateral raised edges 109a and 109b, namely a first lateral raised edge 109a and a second lateral raised edge 109b that are opposite to each other.

[0067] exist Figure 4 In the first lateral protruding edge 109a, a first lateral protruding edge 109a extends in a first plane P1, which intersects with the bottom plane P5 and the longitudinal extension axis A1. A second lateral protruding edge 109b is disposed longitudinally opposite to the first lateral protruding edge 109a, extending in a second plane P2, which intersects with the bottom plane P5 and the longitudinal extension axis A1.

[0068] The first longitudinal protruding edge 108a extends in a third plane P3, which intersects the bottom plane P5 and the lateral extension axis A2 of the plate 105, which is orthogonal to the longitudinal extension axis A1 and parallel to the bottom plane P5. The second longitudinal protruding edge 108b extends in a fourth plane P4, which intersects the bottom plane P5 and the longitudinal extension axis A2 of the plate 105.

[0069] For example, the first plane P1 and the bottom plane P5 form a first angle α between 91° and 140°, preferably between 91° and 95°. The second plane P2 and the bottom plane P5 form a second angle β between 91° and 140°, preferably between 91° and 95°. The third plane P3 and the bottom plane P5 form a third angle γ between 91° and 140°, preferably between 91° and 95°. The fourth plane P4 and the bottom plane P5 form a fourth angle δ between 91° and 140°, preferably between 91° and 95°. According to design variations, the first angle α, the second angle β, the third angle γ, and the fourth angle δ are equal within manufacturing tolerances.

[0070] exist Figure 3 and 4 In the plate 105, there are four openings 110, preferably circular openings, distributed in pairs at each longitudinal end of the plate 105, and more specifically, at each corner of the bottom 106 of the plate 105. Two of these openings 110 are configured to communicate with one of the first flow paths 21 formed on one side of the bottom 106, and the other two openings 110 are configured to communicate with one of the second flow paths 22 formed on the other side of the bottom 106.

[0071] Two openings 110 formed at the same longitudinal end of plate 105 are each surrounded by a collar 120, such that these openings 110 surrounded by the collar 120 extend in a plane offset relative to the bottom plane P5 in which the bottom 106 is inscribed. Two other openings 110 located at the other longitudinal end of plate 105 extend in the bottom plane P5.

[0072] The bottom 106 includes a rib 113 arranged such that the channel 111 has a U-shaped profile. The rib 113 is parallel to a first extending direction D of the longitudinal raised edges 108a, 108b, which is preferably parallel to the longitudinal extending axis A1 of the plate 105. The rib 113 extends between a first longitudinal end 114 and a second longitudinal end 115, the first longitudinal end 114 contacting a lateral raised edge 109a included in the raised edge 107. The second longitudinal end 115 is located at a non-zero first distance D1 from the raised edge 107, the first distance D1 being measured along the longitudinal extending axis A1 of the plate 105 between the second longitudinal end 115 and the lateral raised edge 109b. The first longitudinal end 114 and the second longitudinal end 115 of the rib 113 are aligned along a first direction D parallel to the longitudinal extending axis A1 of the plate 105.

[0073] These arrangements cause the channel 111 to be shaped into a U-shape, with its branches parallel to the longitudinal raised edges 108a and 108b of the plate 105 and separated by ribs 113. The base of the U-shape is adjacent to the second lateral edge 109b, which is formed longitudinally opposite to the first lateral edge 109a. Ribs 113 are formed at a second distance D2 equal to the two longitudinal edges 108a and 108b of the plate 105. The second distance D2 is measured between the center of the rib 113 and one of the longitudinal raised edges 108a and 108b, perpendicular to the longitudinal extension axis A1 of the plate 105.

[0074] According to one design variation, rib 113 is offset by a non-zero distance relative to the intermediate plane P6 of plate 105, which is orthogonal to bottom 106 and parallel to the longitudinal extension axis A1 of plate 105. This distance is measured perpendicular to the intermediate plane P6 between the center of rib 113 and the intermediate plane P6.

[0075] exist Figure 5 and 6 In this configuration, rib 113 includes two rib edges 141 extending between the bottom 106 and the top 140 of rib 113, respectively. The top 140 is the portion of rib 113 furthest from the bottom 106. In other words, the top 140 of rib 113 is longitudinally defined by the rib edges 141. The top 140 is arranged as a platform formed in a plane parallel to the bottom plane P5.

[0076] Rib 113 advantageously has a sinusoidal construction. In other words, rib 113 is generally sinusoidal in shape. It should be understood that the first ridge 142, which separates vertex 140 from any rib edge 141, has a sinusoidal shape in a plane parallel to the bottom plane P5 and containing vertex 140. It should also be understood that the second ridge 143, which separates bottom 106 from any rib edge 141, has a sinusoidal shape in a plane parallel to the bottom plane P5 and containing bottom 106.

[0077] The first ridge 142 and the second ridge 143 are not straight lines. The first ridge 142 and the second ridge 143 of the same rib edge 141 can overlap each other. Thus, each rib edge 141 is formed by an alternating sequence of ridges and depressions. In other words, each rib edge 141 has a corrugated sheet shape. That is, each rib edge 141 includes alternating convex portions 144 and concave portions 145, such as... Figure 5 As shown.

[0078] More specifically, in Figure 6 In the transverse plane P7, which is orthogonal to the bottom plane P5 and the longitudinal extension axis A1 of plate 105, each rib edge 141 forms a fifth angle σ between 90° and 160° with the bottom plane P5. In other words, rib 113 has a trapezoidal profile in the transverse plane P7.

[0079] The rib width X between the two rib edges 141 and parallel to the bottom plane P5 is constant from one of the longitudinal ends 114 and 115 of rib 113 to the other.

[0080] Refer again Figure 3 , 4 At the bottom 106, a plurality of protrusions 112 are provided to disrupt the flow of refrigerant 4 or heat transfer liquid 6 in channel 111. These protrusions 112 obstruct the laminar flow of refrigerant 4 or heat transfer liquid 6 in channel 111. Preferably, the protrusions 112 have a truncated conical profile in cross-section in transverse plane P7.

[0081] exist Figure 3 and 5 In this design, the protrusions 112 are organized into a plurality of straight rows 124a, which are formed along a second direction D′ parallel to the lateral extension axis A2 of the plate 105. Successive straight rows 124a alternately pass through the protrusions 144 or recesses 145 of the groove 113. The straightness of the straight rows 124a of the protrusions 112 stems from the fact that the straight rows 124a of the protrusions 112 are orthogonal to the longitudinal extension axis A1 of the plate 105.

[0082] The protrusion 112 is also organized into a plurality of inclined rows 124b, which are formed along a third direction D″, forming a sixth angle φ with the second direction D′. The sixth angle φ is an acute angle formed between the two directions D′ and D″, which is approximately 90° within the manufacturing tolerance. Successive inclined rows 124b alternately pass through the protrusions 144 or recesses 145 of the groove 113. The inclined feature of the inclined rows 124a of the protrusion 112 stems from the fact that the inclined rows 124b of the protrusion 112 are inclined at a non-zero angle relative to the longitudinal extension axis A1 of the plate 105.

[0083] It should be noted that the first distance E1 between the crown 146 of the protrusion 144 of the rib 113 and the protrusion 112 closest to the crown 146 is between 200% and 300% of the second distance E2, which is measured between the recess 147 of the concave portion 145 of the rib 113 and the protrusion 112 closest to the recess 147. In other words, the crown 146 of the protrusion 144 of the rib 113 is further away from the protrusion 112 closest to the crown 146 than the distance between the recess 147 of the concave portion 145 of the rib 113 and the protrusion 112 closest to the recess 147.

[0084] The plate 105 is made of a stampable metal material so that protrusions 112 and ribs 113 are specifically formed by stamping the plate 105. The metal material is selected from thermally conductive metal materials, especially aluminum or aluminum alloys.

[0085] The invention just described does indeed achieve its intended goal of making heat exchange uniform along the entire length of the plate, thereby avoiding areas with less exchange, such as along rib 113 or along the longitudinal raised edges 108a, 108b, 208a, 208b.

[0086] However, the invention is not limited to the devices and configurations specifically described and illustrated, but is also applicable to all equivalent devices or configurations and any combination thereof. In particular, while the invention has been described herein for use in heat exchangers involving refrigerants and heat transfer fluids, it is self-evident that it is applicable to plates of any shape and / or size or to any type of fluid flowing along a plate according to the invention.

Claims

1. A plate (105) forming part of a heat exchanger (11), the plate defining a U-shaped channel (111) for fluid flow, the plate (105) extending primarily along a longitudinally extending axis (A1), the plate (105) comprising: At least one bottom (106); A first lateral protruding edge (109a) is formed at least partially in a first plane (P1) intersecting the longitudinal extension axis (A1); a second lateral protruding edge (109b) is formed parallel to and opposite to the first lateral protruding edge (109a); and a first longitudinal protruding edge (108a) and a second longitudinal protruding edge (108b) are formed opposite to and parallel to each other. The U-shaped channel (111) includes at least two openings (110) configured to allow the fluid to enter and exit the channel (111), respectively; the bottom (106) is provided with a rib (113) extending longitudinally from the first lateral protruding edge (109a), the rib (113) being located between the two openings (110), characterized in that the rib (113) has a sinusoidal configuration; wherein the U-shaped channel (111) includes two branches and a base; each of the branches is parallel to the corresponding first longitudinal protruding edge (108a) or second longitudinal protruding edge (108b); and the base is adjacent to the second lateral protruding edge (109b); The rib (113) includes two longitudinal ends (114, 115), wherein the first longitudinal end (114) contacts the first lateral protrusion edge (109a), and the second longitudinal end (115) is disposed at a non-zero distance from the second lateral protrusion edge (109b); The bottom (106) of the plate (105) is provided with a plurality of protrusions (112), and is interrupted by the protrusions (112) between the second longitudinal end (115) of the rib (113) and the second lateral protrusion edge (109b); The protrusions (112) are organized into a plurality of straight rows (124a) and inclined rows (124b); the straight rows (124a) of the protrusions (112) are formed along a second direction (D′) parallel to the lateral extension axis (A2) of the plate (105); the inclined rows (124b) of the protrusions (112) are inclined at a non-zero angle relative to the longitudinal extension axis (A1); and Multiple straight rows (124a) and multiple inclined rows (124b) are provided in each of the two branches of the U-shaped channel and in the base of the U-shaped channel; The second longitudinal end (115) of the rib (113) is aligned along a first direction (D) parallel to the longitudinal extension axis (A1) of the plate (105) and terminates in one row of protrusions (112) of the straight row (124a) without contacting the nearest laterally protrusion (112).

2. The plate (105) according to claim 1, characterized in that, The first longitudinal end (114) and the second longitudinal end (115) of the rib (113) are aligned along a first direction (D) parallel to the longitudinal extension axis (A1) of the plate (105).

3. The plate (105) according to any one of the preceding claims, characterized in that, The rib (113) has a top (140) located between the two rib edges (141).

4. The plate (105) according to claim 3, characterized in that, At least one rib edge (141) includes alternating successive protrusions (144) and recesses (145).

5. The plate (105) according to claim 3, characterized in that, The rib width (X) between the two rib edges (141) and parallel to the bottom plane (P5) is constant from one of the longitudinal ends (114, 115) of the rib (113) to the other, and the bottom (106) is at least partially formed in the bottom plane (P5).

6. The plate (105) according to claim 4, characterized in that, The rib width (X) between the two rib edges (141) and parallel to the bottom plane (P5) is constant from one of the longitudinal ends (114, 115) of the rib (113) to the other, and the bottom (106) is at least partially formed in the bottom plane (P5).

7. The plate (105) according to claim 4, characterized in that, The first distance (E1) between the crown (146) of the protrusion (144) of the rib (113) and the protrusion (112) closest to the crown (146) is between 200% and 300% of the second distance (E2), which is measured between the recess (147) of the concave portion (145) of the rib (113) and the protrusion (112) closest to the recess (147).

8. A heat exchanger (11) comprising at least one plate (105) as described in any of the preceding claims.

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