Heat exchanger plate module, plate heat exchanger and plate heat exchanger production process

Abstract

This disclosure relates to a heat exchanger plate module (200) comprising a pressed heat exchanger plate (201) and a flat plate (201'), and a heat exchanger (1) comprising multiple modules (200). The plate in the module includes: a first longitudinal end portion (101) including at least one fluid port (110), a second longitudinal end portion (102) including at least one fluid port (120), and an intermediate heat exchange portion (103) disposed between the first and second longitudinal end portions. The pressed heat exchanger plate (201) also includes a pressed corrugated pattern (P) having alternating top and bottom edges in the thickness direction (d) of the plate. The pressed pattern (P) includes a first fluid channel pattern (FCP1) in the first and / or second longitudinal end portions (101; 102) guiding fluid flow to at least one fluid port (110; 130) and / or a second fluid channel pattern (FCP2) bypassing at least one fluid port (120; 140). In the intermediate heat exchange section (103), the third fluid channel pattern (FCP3) is in fluid communication with the first fluid channel pattern (FCP1) and / or the second fluid channel pattern (FCP2) and includes a plurality of longitudinally extending wavy pressed lines (1030) configured to form discrete fluid channels (31) in the longitudinal direction (l) of the heat exchanger plate module (200) when the pressed heat exchanger plate (201) is attached to the plate (201'). A compact heat exchanger structure can be provided.

Description

Technical Field

[0001] This invention relates to a heat exchanger plate module comprising a pressed plate and a flat plate, as defined in the preamble of the independent claims appended herein. This disclosure also relates to a plate heat exchanger as defined in the preamble of the independent claims appended herein. Furthermore, this disclosure relates to a process for manufacturing a plate heat exchanger. Background Technology

[0002] A plate heat exchanger, or PHE, is a heat exchanger that typically comprises multiple metal heat transfer plates arranged in alignment and stacked. The metal plates are used to separate two fluids and transfer heat between them. In a plate heat exchanger, fluids of different temperatures are distributed on the respective surfaces of the plates, which may include several fins to provide increased heat exchange area. Fins can be provided by corrugating the plates. The stack of heat exchanger plates can be arranged between end plates, and all plates can be joined, for example, by welding or brazing. In some variations, pressure plates are used to press the heat exchanger plates and end plates against each other. For heat transfer between the fluids to be possible, flow channels for the respective fluids are required, and this can be achieved in different ways depending on the type of heat exchanger and the fluids in question.

[0003] Different types of plate heat exchangers (PHEs) exist, and plate heat exchangers can be adapted to different types of hot fluids. Well-known PHEs include, for example, brazed or welded heat exchangers, where the flow of hot fluids is generally arranged in countercurrent manner in separate channels. No gaskets or similar materials are used to separate the fluids. There are also so-called gasketed plate heat exchangers (GPHEs), where gaskets are arranged between heat transfer plates to ensure that the hot fluids do not mix with each other. In a heat exchanger, flow channels are typically defined between heat transfer plates through which fluids of initially different temperatures can flow to transfer heat from one fluid to another. In brazed or welded heat exchangers, plates with grooves can be used, which form parallel flow channels with alternating hot and cold fluids. GB718991 discloses a known type of brazed plate heat exchanger. This document shows a heat exchanger with plates that utilize alternating corrugated and flat plates to form the heat exchanger surface, wherein each fluid is arranged to flow on both sides of the corrugated plates. However, the assembly of plate heat exchangers requires several components, such as corrugated strips with gaps, which need to be fixed in the space enclosed by the side walls and metal discs.

[0004] Despite the existence of existing plate heat exchanger solutions, improvements are still needed in plate heat exchangers. In particular, there is a need for compact plate heat exchangers that are simple to manufacture and require minimal amounts of metal raw materials. Additionally, there is a need for plate heat exchangers suitable for use in conjunction with high pressures, particularly, for example, from 100 bar upwards. Heat exchangers suitable for heat exchange between hot and cold gases are also desired, especially when at least one of the gases is supplied at high pressure, referred to herein as high-pressure gas (HPG) plate technology. Summary of the Invention

[0005] One object of the present invention is to mitigate, alleviate or eliminate one or more of the aforementioned defects in the prior art, and to provide a solution for heat exchanger plates, wherein the design of the heat exchanger plates is robust and allows for efficient heat exchange in different types of plate heat exchangers.

[0006] Another objective is to provide a heat exchanger plate suitable for use under high pressure.

[0007] Another objective is to provide a manufacturing method that requires a minimum amount of metal raw materials.

[0008] Another objective is to reduce the cost of the boards used.

[0009] Furthermore, it is desirable to increase the area of ​​the plate used for the heat exchange process. Therefore, another object of the present invention is to enable an increase in the utilization rate of the plate area used for heat exchange.

[0010] The objectives mentioned above are achieved by the invention as defined in the appended claims.

[0011] According to a first aspect, a heat exchanger plate module including a pressed plate and a flat plate is provided, wherein the pressed plate and the flat plate have two opposite side surfaces, and extensions in the longitudinal direction, the transverse direction perpendicular to the longitudinal direction, and the thickness direction of the plates. The plates (i.e., both the pressed plate and the flat plate) have substantially the same external shape in the longitudinal and transverse directions, and the plates in the module include: • A first longitudinal end portion including at least one fluid port • A second longitudinal end portion including at least one fluid port, and • An intermediate heat exchange section located between the first longitudinal end portion and the second longitudinal end portion.

[0012] The pressed sheet also includes a pressed corrugated pattern with alternating top and bottom edges in the thickness direction of the sheet. The pressed pattern is particularly: • The first longitudinal end portion and / or the second longitudinal end portion include a first fluid channel pattern that guides fluid flow to at least one fluid port and / or a second fluid channel pattern that bypasses at least one fluid port. • The intermediate heat exchange section includes a third fluid channel pattern that is in fluid communication with the first and / or second fluid channel patterns, and includes a plurality of longitudinally extending wavy press lines configured to form discrete fluid channels in the longitudinal direction of the heat exchanger plate module when the press plate is attached to the plate.

[0013] The heat exchanger plate module of the present invention, wherein the pressed plate includes integrally joined fluid ports, and wherein the pressed fluid channel pattern allows fluid to flow through or around the integrally joined ports and provides a large heat exchange area in the middle of the ports, provides a robust heat exchanger plate module that allows for efficient heat exchange in different types of plate heat exchangers. Due to the robust construction of the plate module, the module is suitable for construction in plate heat exchangers with high fluid pressures or in heat exchangers with large differential pressures between hot and cold fluids. Furthermore, due to the structure of the heat exchanger plate module with integrally joined ports and the specific fluid channel pattern, the plate thickness can be reduced compared to prior art solutions, thus requiring a minimal amount of metal raw materials. Therefore, it is possible to reduce the cost of the plates. Additionally, due to the flow channel pattern in the pressed plate, this structure provides a large heat exchange area.

[0014] To ensure that the module is impermeable to fluid, the plate is attached to the pressing plate along the extensions of the first fluid channel pattern, the second fluid channel pattern, and the third fluid channel pattern.

[0015] The first and / or second fluid channel patterns may form a discontinuous pattern with the third fluid channel pattern. The discontinuous pattern may include interruptions between the first and / or second fluid channel patterns and the third fluid channel pattern. This facilitates the transfer of fluid flow between the first and / or second fluid channel patterns and the third fluid channel pattern.

[0016] The amount of flow channels formed by the corresponding first and second flow channel patterns in the pressing plate together with the plate is less than the amount of discrete flow channels formed by the third flow channel pattern in the pressing plate and the plate. In this way, a smaller area is required for the first and second longitudinal end portions, and material savings can be achieved.

[0017] According to an embodiment, each of the first and second longitudinal end portions may include two fluid ports, thereby allowing diagonal or parallel fluid flows to be arranged in the plate heat exchanger, resulting in effective heat exchange between the fluids. The corresponding first and second longitudinal end portions may include a first fluid channel pattern and a second fluid channel pattern that guide fluid flow to and / or around at least one fluid port. The first and second fluid channel patterns may then be configured to provide diagonal flow between the fluid ports in the first and second longitudinal end portions. Alternatively, the first and second fluid channel patterns may be configured to provide parallel flow between the fluid ports in the first and second longitudinal end portions. In some applications, parallel flow may be more desirable than diagonal flow.

[0018] According to the heat exchanger plate module of any of the foregoing technical solutions, the amount of corrugated pressing lines (and therefore the amount of fluid channels formed together with the plate) in the third fluid channel pattern is 10 to 150, or 10 to 50, or 12 to 20. Therefore, the heat exchange surface can be adapted to the desired application. In the third fluid channel pattern, the number of full waves in the corrugated pressing lines can be 8-100, or 8 to 50, or 8 to 20, resulting in the possibility of adjusting the amount to suit the desired application. Preferably, in the third flow channel pattern, the corrugated pressing lines are in phase with each other, thereby ensuring that the width of each flow channel is equal.

[0019] The plates (i.e., both or at least one of the pressed plates and flat plates in the module) may have a thickness of 0.25 to 5.0 mm or 0.3 to 3.0 mm. The thickness of the plate refers to the thickness of the material. For pressed plates, the thickness is measured after pressing. The thickness of the plates does not need to be uniform; for example, a pressed plate may be thinner or thicker than a flat plate, but in some applications the thickness may be the same.

[0020] The pressing depth of the fluid channel pattern can be at least 0.5 mm. In this way, the alternating top and bottom sections in the thickness direction of the plate can have a height difference of 0.5 mm, and therefore the fluid flow channel height is 0.5 mm. By adjusting the height of the channel, the flow resistance in the module can be adjusted, for example.

[0021] The objectives and advantages mentioned above are also achieved by the plate heat exchanger as defined in the appended claims. The plate heat exchanger comprises a plurality of stacked heat exchanger plate modules suitable for the type described above. In the stack, the modules are arranged such that every other plate is a pressed plate, and every other plate is a flat plate. Each of the flat and pressed plates has two opposite side surfaces, extensions in the longitudinal direction of the plate, in a transverse direction perpendicular to the longitudinal direction, and in the thickness direction. The flat and pressed plates include... • A first longitudinal end portion including at least one fluid port • A second longitudinal end portion including at least one fluid port • An intermediate heat exchange section disposed between the first longitudinal end portion and the second longitudinal end portion, wherein The pressing plate also includes an embossed pattern, which is formed in the thickness direction of the pressing plate with alternating top and bottom corrugations. Embossing pattern: • The first longitudinal end portion and / or the second longitudinal end portion include a first fluid channel pattern that guides fluid flow to at least one fluid port and / or a second fluid channel pattern that bypasses at least one fluid port. • The intermediate heat exchange section includes a third fluid channel pattern that is in fluid communication with the first and / or second fluid channel patterns, and includes a plurality of longitudinally extending wavy press lines configured to form discrete fluid channels in the longitudinal direction of the press plate when the press plate is attached to the flat plate.

[0022] The plate can be attached to the pressing plate along the extensions of the first, second, and third fluid channel patterns. Therefore, the plate of each module is attached to the pressing plate of the corresponding module and to the pressing plate of the adjacent module. The first, second, and third fluid channel patterns can form discrete fluid channels with contact surfaces having a length along the fluid channel pattern. In this way, discrete, fluid-impermeable channels are obtained in the stack when the modules are pressed or attached to each other.

[0023] According to an exemplary plate heat exchanger, every other plate includes at least one fluid port and a first fluid channel pattern guiding fluid flow to the at least one fluid port in a corresponding first longitudinal end portion and a corresponding second longitudinal end portion, and every other plate includes at least one fluid port and a second fluid channel pattern bypassing the at least one fluid port in a corresponding first longitudinal end portion and a corresponding second longitudinal end portion. Thus, fluid channels for corresponding cold and hot fluids can be arranged alternately, while a large heat exchange area can be provided in a compact manner.

[0024] According to another example, every other pressing plate (which includes two fluid ports in its respective first and second longitudinal end portions, as well as a first fluid channel pattern guiding fluid flow into one of the fluid ports and a second fluid channel pattern bypassing the other fluid port) is fixed to the plate with a first surface facing the plate, and every other pressing plate is fixed to the plate with a second surface facing the opposite plate. In this way, diagonal or parallel flow can be arranged in a single plate module, thereby increasing the flexibility and heat exchange capacity of the plate heat exchanger.

[0025] Plate heat exchangers can be configured such that a stack of at least two heat exchanger plate modules is arranged in parallel by attaching the modules together along two opposite longitudinal sides of the modules. Alternatively, at least two pressed patterns can be arranged in parallel on a plate, each pattern corresponding to a pressed pattern of a pressed plate of a module. In this way, a monolithically joined pressed plate with a number of parallel ports can be provided in the plate heat exchanger. The number of parallel ports in the monolithically joined pressed plate (where each port is located in each longitudinal end portion of the pressed plate or plate pattern) can vary, for example, from 2 to 20 or even more.

[0026] Therefore, the plate heat exchanger of this disclosure is suitably a reheating heat exchanger, wherein separate flow paths are arranged for each fluid.

[0027] The fluid port can be connected to an external fluid connector.

[0028] Plate heat exchangers can be welded, brazed, welded, diffusion welded, or gasketed heat exchangers.

[0029] Plate heat exchangers can be configured for heat exchange between two gases. Depending on the variant, plate heat exchangers can be configured for high-pressure applications.

[0030] According to another aspect of the present invention, the present invention relates to a process for manufacturing a plate heat exchanger as described above, the process comprising the following steps: • Cutting metal sheets to provide two or more metal sheets having extensions in the longitudinal direction, the transverse direction perpendicular to the longitudinal direction, and the thickness direction. • Pressing at least one of the metal plates in a pressing tool, wherein the pressing tool is configured to provide a pressed pattern to the heat exchanger plate. • Provides a flat plate with an external shape and size corresponding to the pressing plate in both the longitudinal and transverse directions. • We offer heat exchanger plate modules, including pressed plates and flat plates. • Assemble the heat exchanger plate modules by stacking them such that every other plate is a pressed plate and every other plate is a flat plate. • Connect the modules together to provide a stacked plate heat exchanger that includes heat exchanger modules.

[0031] The invention will become apparent from the detailed description given below. The detailed description and specific examples disclose the invention by way of example only. Those skilled in the art will understand from the guidance of the detailed description that changes and modifications can be made within the scope of the invention as defined in the appended claims. Attached Figure Description

[0032] The above-described objects, additional objects, features, and advantages of the invention will be more fully appreciated when viewed in conjunction with the accompanying drawings and by referring to the following exemplary and non-limiting detailed description of exemplary embodiments of the invention.

[0033] Figure 1a An example of a plate heat exchanger including a stack of heat exchanger plates is shown schematically in a side view; Figure 1b The diagram schematically shows an enlarged cross-section, viewed from above, of a stack of plates in a plate heat exchanger, which can be used as... Figure 1a The type shown; Figure 2 The previous view schematically shows the applicable Figure 1a The end plate of the heat exchanger shown; Figure 3a A heat exchanger plate with four integrally joined ports is shown according to an embodiment of the present disclosure.

[0034] Figure 3b Show Figure 3a Mirrored heat exchanger plate.

[0035] Figure 4a Another embodiment of a heat exchanger plate according to the present disclosure is shown, wherein the plate corresponds to the first plate type and includes two integrally joined ports and a flow channel pattern bypassing these ports.

[0036] Figure 4b A second plate type, viewed from above, is shown as an embodiment of a heat exchanger plate module according to this disclosure, wherein the module includes... Figure 4a The board and clamp Figure 4a board and Figure 4b The plate shown is between the topmost plates, which includes two ports and a flow channel pattern that guides fluid flow in a so-called "U-shaped flow" into the ports.

[0037] Figure 5 An example of a plate heat exchanger configured for a so-called "U-shaped flow" for cold fluids is shown, wherein the heat exchanger comprises a stack of heat exchanger plates, the heat exchanger plates comprising... Figure 4b The module consists of nine parallel plates stacked, or wide plates stacked, wherein each wide plate contains Figure 4a The type shown or Figure 4b The top nine are parallel plate patterns.

[0038] Figure 6a The diagram schematically illustrates fluid flow in a wide plate comprising nine parallel plate patterns, wherein one of the plate patterns corresponds to... Figure 4a The plate shown.

[0039] Figure 6b The diagram schematically illustrates fluid flow in a wide plate comprising nine parallel plate patterns, wherein one of the plate patterns corresponds to... Figure 4b The plate shown.

[0040] Figure 7a The diagram shows a plate heat exchanger with a stack of plates, each plate having a pattern of nine plates arranged in parallel, the plates arranged in a module and configured for a so-called "Z-shaped flow" for cold air.

[0041] Figure 7b Showing the arrangement in Figure 7a The flow or arrangement in a parallel plate corresponding to a portion of a wide plate Figure 7a A parallel plate pattern.

[0042] Figure 8a The diagram shows a plate heat exchanger with a stack of plates, each plate having nine parallel plate patterns arranged in a so-called "L-shaped flow" for both cold and hot flows.

[0043] Figure 8b Another embodiment of a heat exchanger plate according to this disclosure is shown, wherein the plate includes two integrally coupled ports and two flow channel patterns, wherein one guides flow into the ports and the other bypasses the ports, and wherein the plate or plate pattern is adapted to be configured for use as... Figure 8a The plate heat exchanger shown is an "L-shaped flow" type. Detailed Implementation

[0044] Modern process technologies often involve heat exchangers for improving process energy efficiency. One common type of heat exchanger is the so-called shell-and-tube heat exchanger, which can be used as, for example, a cooler. In these coolers, the incoming gas serves as the coolant. While they can be efficient and withstand fluids at high pressures, they typically require significant space. Such heat exchangers are commonly used, for example, in ammonia converters between catalyst beds. Converters can be large pressure vessels designed for around 200 bar, containing two to three catalyst beds and two to three heat exchangers. However, they are typically located inside the pressure vessel, where the pressure difference between the cold and hot gases is small. More compact heat exchangers would free up converter vessel volume, allowing the use of more catalyst and thus increasing capacity without requiring a larger vessel. Furthermore, due to the increasing demand for higher energy efficiency, for example, associated with internal combustion engines, there is a growing need to utilize combustion energy in a reheating manner, such as preheating the incoming gas with the outgoing gas. Simultaneously, the high-pressure process technology environment can be demanding, requiring robust structures that can withstand these conditions, especially given the high temperatures, large amounts of dust and other particles, and corrosive gases. Therefore, there is a great need for compact, robust, and efficient heat exchanger technology that can be used under harsh, high-pressure conditions. Thus, one object of the present invention is to provide a heat exchanger technology that responds to these needs.

[0045] It has been found that the above objectives are achieved by the plate heat exchanger according to the invention, which will now be described with reference to the accompanying drawings illustrating examples of the invention. However, the invention may be embodied in other forms and should not be construed as limited to the exemplary embodiments disclosed herein. The disclosed embodiments are provided to fully convey the scope of the invention to those skilled in the art.

[0046] Figure 1a An example of a plate heat exchanger 1 is schematically shown, comprising a stack 301 of a stacked heat exchanger module 200, which includes a pressed plate 201 and a flat plate 201'. The plate heat exchanger 1 is intended for heat exchange between two fluid media at different temperatures, one referred to as a "cold" (C) fluid and the other as a "hot" (H) fluid. The cold fluid has a lower temperature than the hot fluid. Heat exchange can be performed for various purposes, such as heating, cooling, heat recovery, evaporation, and condensation. The fluid can be a gas or a liquid such as water. According to variations, the plate heat exchanger is used in the production of ammonia, which requires high fluid pressures, but is not limited to this. The plate heat exchanger of this disclosure is configured for high pressures and is therefore capable of withstanding high pressures / differential pressures of fluids, such as those during ammonia production.

[0047] The plate stack 301 of the plate heat exchanger 1 comprises a plurality of heat exchanger plates stacked on top of each other by alternately pressing plates 201 and flat plates 201' about each other, and stacked sequentially such that they form the plate stack 301, wherein every other plate is a pressed plate and every other plate is a flat plate. The pressed plates 201 have a pressing design according to the invention, which will be described in more detail below. The flat plates do not include a pressed flow channel pattern, but do not need to be completely flat; that is, the flat plates may include slight bends. The plate stack 301 is disposed between a first end plate 6 arranged on a first side of the plate stack 301 and a second end plate 7 arranged on a second side of the plate stack 301. The end plates 6, 7 may have the same outer peripheral shape as the heat exchange plates in the plate stack 301, but may be slightly thicker to provide increased mechanical protection against external forces. The outer shape of the plates in the stack is a rectangle with rounded corners, but other shapes (e.g., with beveled corners (i.e., having eight corners, see example)) are also possible. Figure 3a (or a rectangle with sharp corners) is also possible.

[0048] The pressing plate 201 and plate 201' of each module 200 can be permanently connected to each other in the plate stack 301. In the stack 301, the modules 200 having alternating pressing plates 201 and plate 201' alternately form first flow channels or paths and second flow channels or paths for corresponding first and second fluids. When the pressing plate 201 is attached to the corresponding side surface of the plate 201', the flow channels are formed on the corresponding side of the plate 201'.

[0049] The plate heat exchanger 1 may include a first fluid port 10, which can serve as an inlet, and a second fluid port 11, which can serve as an outlet. The first fluid port 10 serves as an inlet and receives a first fluid, directing the first fluid into a first flow path between the plates in the plate stack 301. The second fluid port 11, serving as an outlet, receives the first fluid from the first flow path and allows the fluid to exit the plate heat exchanger 1. Figure 2 As shown in the example, the plate heat exchanger 1 may include a third fluid port 12 as an inlet and a fourth fluid port 13 as an outlet. The third fluid port 12 receives a second fluid and directs the second fluid into a second flow path between the plates. The fourth fluid port 13 receives the second fluid from the second flow path and allows the second fluid to exit the plate heat exchanger 1.

[0050] In some embodiments, connector 8 may be connected to each of the ports serving as inlet and outlet, and each connector 8 may be in the form of a pipe. Fluid lines for both fluids can then be connected to the plate heat exchanger 1 via connector 8. This connection can be achieved using any suitable technology, and connector 8 is typically made of the same material as the plates in plate stack 301. The inlet and outlet for one of the fluids may be reversed, resulting in co-current flow of the fluids rather than counter-current flow as shown. However, this type of connector is not necessary in all embodiments of the invention.

[0051] According to one aspect, the present invention relates to a heat exchanger plate module 200, comprising as described above... Figure 1b The plates 201' and 201 are schematically depicted in a cross-sectional view of the middle portion of the plates (i.e., between ports 10, 13; 11, 12, starting from the top side of the heat exchanger stack 301). The plates can be permanently attached to each other, for example, and can be brazed, fused, or welded together. Figure 1b As can be seen, three pressed plates 201, having pressed patterns including alternating top T and bottom B along the thickness direction d, form a wavy outer profile or fins 21 along the thickness direction d. These fins 21, together with the plate 201' and / or end plates or side plates 6 and 7, form discrete flow channels for corresponding hot and cold flows on opposite sides of the plate 201'. In addition, the fins 21 (only two of which are marked with reference marks) provide an increased heat exchange surface for the plate heat exchanger.

[0052] Each of the heat exchanger modules 200 is arranged such that between two mirror-shaped press plates 201, there exists a flat plate 201' attached to a corresponding surface of the press plate 201. The press plate 201 includes fins 21 for the purposes mentioned above, which are formed when a corrugated flow channel pattern is pressed onto the press plate 201. In this way, the fins 21 of the press plate 201, together with the flat plate 201', form discrete fluid channels 31 in which hot (H) fluid or cold (C) fluid (such as gas) can flow. The height of the channel 31 (i.e., the extension in the thickness direction d of the plate) can be adapted to the fluid type and pressure in the process. The higher the channel, the larger the heat exchange area. The height of the channel can also affect the pressure drop of the flow in the channel. In addition, when the plate is manufactured by pressing, the strength characteristics of the channel may be affected by the selected height; that is, for a given plate thickness, the higher the channel, the greater the impact on the strength characteristics of the plate. The height of the channel can be, for example, from 0.5 mm to 10 mm, such as 1-5 mm, for example, about 1.5 mm. The metal plates (i.e., both flat plates and pressing plates) can generally have an initial thickness of about 0.1 to 1.0 mm, i.e., before the pattern is pressed onto the plate. The thickness of the plate is suitably uniform throughout the pressing plate. Therefore, attachment to the flat plate can be performed in a controlled manner. In addition, the height of the channel is suitably uniform throughout the pressing plate. However, in some embodiments, the height of the channel can be varied. Each of the flat plate 201' and the pressing plate 201 has two opposite side surfaces 211', 212' and 211, 212, respectively.

[0053] Figure 3a and 3b A pressing plate 201 according to an embodiment of the present disclosure is shown in more detail. The pressing plate 201 has extensions in the longitudinal direction l, the transverse direction t perpendicular to the longitudinal direction, and the thickness direction d. Figures 3a-3b The pressing plate 201 shown is configured to be attached to the flat plate 201' (see Figure 1b The plate has a substantially the same external shape as the pressing plate 201 in both the longitudinal direction l and the transverse direction t. Each of the plate 201' and the pressing plate 201 in module 200 includes: a first longitudinal end portion 101 including two fluid ports 110, 130; a second longitudinal end portion 102 including two fluid ports 120, 140; and an intermediate heat exchange portion 103 disposed between the first longitudinal end portion 101 and the second longitudinal end portion 102. Figure 1b As shown, the pressing plate 201 also includes a pressed corrugated pattern that extends in a plane extending laterally and longitudinally and forms fins 21 with tops and bottoms in the thickness direction d of the plate.

[0054] exist Figures 3a-3bIn the illustrated embodiment, the pressed pattern includes a first fluid channel pattern FCP1 in the respective first longitudinal end portions 101 and second longitudinal end portions 102, guiding fluid flow to the respective fluid ports 110, 140 and a second fluid channel pattern FCP2 bypassing the respective fluid ports 130, 120. In this way, the pressed plate includes a total of four ports, two in each longitudinal end portion 101 and 102. By providing two fluid ports in the respective longitudinal end portions, where fluid is guided to one port 110, 140 and bypasses the other port 130, 120, the temperature range and gradient in the metal plate will be smaller, resulting in lower thermal stress and better fatigue strength. Figures 3a-3b As can be seen, the flow at the inlet is arranged diagonally. This arrangement can potentially provide a favorable flow distribution, thereby further reducing the thermal stress on the plate, for example, at high temperatures. However, the ports and flow pattern can alternatively be arranged such that the fluid flows in a parallel manner.

[0055] Such as combination Figures 3a-3b As shown, the press plate 201 includes a third fluid channel pattern FCP3 in the intermediate heat exchange section 103, which is arranged to be in fluid communication with the first fluid channel pattern FCP1 and the second fluid channel pattern FCP2. The third fluid channel pattern FCP3 includes a plurality of longitudinally extending wavy press lines 1030 configured to form fins 21 along the thickness direction d.

[0056] In this disclosure, "pressed line" refers to a unique, elongated, narrow ridge, beam, or track pressed into a heat exchanger plate, wherein the pressed line has extensions in the longitudinal, transverse, and thickness directions, and thus the extension in the longitudinal direction is greater than the extensions in the transverse and thickness directions. "Wave-like" refers to a shape resembling a sine curve. The amplitude and wavelength may be the same along a pressed line or may vary within a pressed line. The pressed line suitably has curved edges in all directions (longitudinal, transverse, and depth) and therefore has no sharp edges, but sharp edges may appear in some embodiments.

[0057] like Figure 1bAs shown, when the press plate 201 is attached to the plate 201', the fins 21 formed by the press corrugated lines 1030 then form discrete fluid channels 31 in the longitudinal direction l of the heat exchanger plate. The third fluid channel pattern FCP3 forms the main part of the heat exchange surface in the middle portion 103 of the press plate 201. The corrugated shape of the press lines 1030 extends mainly in the planes of the longitudinal direction l and the transverse direction t. In the thickness direction d, the height of the corrugated press lines and thus the discrete channels 31 formed have substantially the same extension over the entire length of the third fluid channel pattern FCP3. In this way, the plate 201' can be attached to the press plate 201 in the module 200 in a fluid-impermeable manner. In addition, the final external shape of the heat exchanger will be consistent in all directions. The plate 201' can be attached to the press plate 201 along the entire extension of the third fluid channel pattern FCP3, thereby forming discrete channels and minimizing the risk of leakage between the discrete channels.

[0058] exist Figures 4a-4b The image shows another embodiment of the pressing plate 201 according to the present disclosure. Instead of the four ports in the corresponding pressing plate 201 and plate 201' of each module 200, only two ports exist, one each in the corresponding end portions 101, 102 of the plate. Additionally, as... Figures 4a-4b As shown, each plate may have a first fluid channel pattern FCP1 or a second fluid channel pattern FCP2 in both the first end portion 101 and the second end portion 102. However, in a variant, each plate may have the first fluid channel pattern FCP1 in the first end portion and the second fluid channel pattern FCP2 in the second end portion.

[0059] exist Figure 4a The image shows a type of pressure plate 201, which has a second fluid channel pattern FCP2 in the corresponding end portions 101, 102, bypassing ports 110, 120. Figure 4b The image shows a type of pressure plate 201, which has a first fluid channel pattern FCP1 in the corresponding end portions 101, 102 to guide flow into ports 110, 120. The flow bypassing ports 110, 120 is hot (H) in this example, while the flow guided through ports 110, 120 is cold (C) in this example.

[0060] Figure 5 An embodiment of a heat exchanger is shown, wherein Figures 4a-4b The heat exchanger plate module can be used, but it is pressed into a large, integral heat exchanger plate, and Figures 6a-6b The fluid flow in the corresponding integrally combined wide plate is shown.

[0061] See Figure 4aThe first type of pressing plate 201 according to a dual-port embodiment of the present disclosure is shown in more detail. Each pressing plate 201 has extensions in the longitudinal direction l, the transverse direction t perpendicular to the longitudinal direction, and the thickness direction d. Figure 4a In the illustrated embodiment, the pressed pattern includes a second fluid channel pattern FCP2 that bypasses the corresponding fluid ports 110, 120 in the respective first longitudinal end portions 101 and second longitudinal end portions 102. Figure 4b In the illustrated embodiment, the pressed pattern includes a first fluid channel pattern FCP1 in the respective first longitudinal end portion 101 and second longitudinal end portion 102, guiding fluid into the respective fluid ports 110, 120. Furthermore, in Figures 4a-4b In the embodiment shown, the pressing plate 201 includes a third fluid channel pattern FCP3 in the intermediate heat exchange section 103, the third fluid channel pattern FCP3 being arranged in accordance with... Figure 4a The first fluid channel pattern FCP1 of the plate shown is... Figure 4b The second fluid channel pattern FCP2 of the plate shown is fluid connected.

[0062] With Figure 3a The same method is used in the embodiment shown in -3d. Figures 4a-4b The third fluid channel pattern FCP3 in the embodiment includes a plurality of longitudinally extending wavy pressed lines 1030 configured to form fins, such as Figure 1b As shown, when the press plate is attached to the plate, these fins then form discrete fluid channels in the longitudinal direction l of the heat exchanger plate. The third fluid channel pattern FCP3 forms the main part of the heat exchange surface of the press plate 201. The wavy shape extends primarily in the planes of the longitudinal direction l and the transverse direction t. In the thickness direction d, the height of the wavy press line has a substantially uniform extension throughout the third fluid channel pattern FCP3. In this way, the attachment of the plate 201' can be carried out in a fluid-impermeable manner, and the final external shape of the heat exchanger will be uniform.

[0063] In all variations of the pressing plate of this disclosure, such as those by Figures 3a-3b and Figures 4a-4bAs shown, the first fluid channel pattern FCP1 and / or the second fluid channel pattern FCP2 can be formed as discontinuous patterns with the third fluid channel pattern FCP3 by using interruptions 151 and 152, respectively, between the first fluid channel pattern FCP1 and / or the second fluid channel pattern FCP2 and the third fluid channel pattern FCP3. By using interruptions 151 and 152, it is possible to provide a simpler construction in which a different number of fluid channels can be used in the intermediate portion 103 than in the end portions 101, 102. According to a variant, the number of fluid channels formed by the corresponding first fluid channel pattern FCP1 and the second fluid channel pattern FCP2 is less than the number of discrete flow channels formed by the third fluid channel pattern FCP3. In this way, it is possible to provide a generally smaller heat exchanger plate and thus a more compact heat exchanger structure, while also saving material costs, while continuous fluid flow is possible.

[0064] Flat panel 201' (see Figure 1b It can be attached to the pressure plate 201 along the extension of the entire third fluid channel pattern FCP3, thereby forming discrete channels and minimizing the risk of leakage between the corresponding cold and hot fluids.

[0065] Generally, the amount of corrugated pressure lines 1030 in the third fluid channel pattern FCP3 can be 10 to 150, or 10 to 50, or 12 to 20. The number of pressure lines affects the width of the discrete channels in the transverse direction t of the plate. The width, in turn, affects, for example, the strength of the pressure plate and the pressure drop obtained for the fluid. The number of pressure corrugated lines can be adapted to process parameters including fluid, pressure, and temperature. Furthermore, in the third fluid channel pattern FCP3, the number of full waves in the corrugated pressure lines can vary depending on the size of the plate and can be 8-100, or 8 to 50, or 8 to 20. Additionally, in the third fluid channel pattern FCP3, the corrugated pressure lines can be in phase with each other, thereby providing uniform flow in each discrete channel.

[0066] In addition, according to Figures 4a-4b In the dual-port embodiment shown, both the pressing plate 201 and the flat plate 201' have substantially the same external shape in the longitudinal direction l and the transverse direction t. Each of the flat plate and the pressing plate in the module may include: a first longitudinal end portion 101 including a fluid port 110, a second longitudinal end portion 102 including a fluid port 120, and an intermediate heat exchange portion 103 disposed between the first longitudinal end portion 101 and the second longitudinal end portion 102. Figure 1b As shown, the pressing plate 201 also includes a pressed corrugated pattern, which forms fins 21 with top and bottom along the thickness direction d of the plate.

[0067] Generally, both the pressing plate 201 and the flat plate 201' can have a thickness of 0.25 to 5.0 mm or 0.3 to 3.0 mm. For the cold / hot sides, the thickness of the pressing plate 201 can be the same or different. (Thicker options are also possible.) Figure 1a and 1b Apart from the end plates 6 and 7 shown, the thickness of the plate 201' is preferably also the same. The pressing plates 201 may have the same thickness, or they may initially have the same thickness as the plate 201'. However, during the pressing operation, the thickness of the pressing plate 201 may be affected, and thus the final thickness of the pressing plate 201 may be less than the thickness of the plate 201'. In some cases, the pressing plate 201 may also be thicker or thinner than the plate 201'. Generally, the materials used for the pressing plate 201 and the plate 201' can be any suitable and commonly used material, such as stainless steel, aluminum, copper, nickel, tantalum, titanium, or alloys thereof, but are not limited thereto. The materials of the pressing plate 201 and the plate 201' may be the same or different.

[0068] This disclosure also relates to a plate heat exchanger 1 comprising multiple stacked heat exchanger plate modules 200, which may be of the type described above. For example... Figure 1b As schematically shown, in stack 301, module 200 includes a pressing plate 201 as every other plate and a flat plate 201' every other plate. As explained above, each of the flat plate and the pressing plate has two opposite side surfaces and extensions in the longitudinal direction l, the transverse direction t perpendicular to the longitudinal direction, and the thickness direction d of the plate.

[0069] The plate heat exchanger can be configured for use in a heat exchanger module 200 including a press plate 201 having the structure described above. Each of the plate 201' and the press plate 201 may include: a first longitudinal end portion 101 including at least one fluid port 110, a second longitudinal end portion 102 including at least one fluid port 120, and an intermediate heat exchange portion 103 disposed between the first longitudinal end portion and the second longitudinal end portion.

[0070] Each of the pressing plates 201 also includes a pressing pattern, which is formed in the thickness direction d and as described above, into a corrugated pattern having a top T and a bottom B. The pressing pattern includes, in the respective first longitudinal end portion 101 and second longitudinal end portion 102, a first fluid channel pattern FCP1 that guides fluid flow into at least one fluid (port) and / or a second fluid channel pattern FCP2 that bypasses at least one fluid port. The pressing pattern also includes, in the intermediate heat exchange portion 103, a third fluid channel pattern FCP3 that is in fluid communication with the first fluid channel pattern FCP1 and / or the second fluid channel pattern FCP2, and includes a plurality of longitudinally extending corrugated pressing lines 1030 configured to form discrete fluid channels in the longitudinal direction l of the pressing plate when the pressing plate 201 is attached to the plate 201'. In the heat exchanger, when pressed against the plate 201' in the stack 301, the first fluid channel pattern FCP1, the second fluid channel pattern FCP2, and the third fluid channel pattern FCP3 form discrete fluid channels with contact surfaces along the length of the fluid channel patterns.

[0071] Heat exchangers can be configured for different types of flow directions. Therefore, the pressed patterns, and in particular the first and second fluid channel patterns in the pressed plate 201, can be adapted to the desired flow direction.

[0072] like Figure 4a and 4b As shown in the pressing plate 201, every other pressing plate 201 includes a fluid port 110; 120 in a corresponding first longitudinal end portion 101 and second longitudinal end portion 102. Figure 4a and 4b As shown in the best example, every other plate is where the first fluid channel pattern FCP1 guides the fluid flow to fluid ports 110; 120 (see [reference]). Figure 4b The type in ) and the second fluid channel pattern FCP2 in the press plate 201, which includes bypassing at least one fluid port 110; 120, see Figure 4a Plate 201' is positioned in the middle of platen 201. In this way, in the plate heat exchanger, the cold flow can form a flow known as a "U-shaped flow" and is indicated by the arrow line drawn with "C". The cold flow C enters the first longitudinal end portion 101 from above, and this flow is guided by the first flow pattern FCP1 through the channel in the middle portion 103. The flow exits the platen 201 via the second port 120 in the second longitudinal portion 102.

[0073] The heat exchanger module 200 described above is arranged in a stack 301 within the heat exchanger. The plate heat exchanger may include at least two stacks 301 arranged in parallel within the plate heat exchanger 1. Figure 5An example of a heat exchanger is shown, comprising nine parallel heat exchanger stacks 301 of a heat exchanger plate module 200, the heat exchanger plate module 200 including a press plate 201 and a flat plate 201' between the press plates, as shown. Figure 1b , 4a As shown in 4b, parallel stacking can be achieved by attaching nine modules together along two opposite longitudinal sides of the module. Alternatively, the press plates can be integrally combined into a single wide plate, wherein nine press patterns are arranged parallel to each other on a plate, each pattern corresponding to the press pattern of the module's press plate.

[0074] exist Figure 5 In the example shown, the cold flow C is arranged in a "U-shape". See also Figure 6a and 6b The diagram, in conjunction with nine parallel pressing plate patterns, illustrates the heat flow H and cold flow C in more detail. Reference numerals are added only to the left side of the diagram, but apply throughout the entire diagram. Figure 6a As shown, the hot fluid H flows along discrete channels formed by the third flow channel pattern FCP3 in the middle portion 103 of the press plate 201, and bypasses the first port 110 and the second port 120 in channels formed by the second flow channel pattern FCP3 in the corresponding first end portions 101 and second end portions 102 of the integrally joined press plate 2010. Figure 6b As shown, the cold fluid C flows along discrete channels formed by the third flow channel pattern FCP3 in the middle portion 103 of the integrally bonded press plate 2010, and is introduced into the first port 110 and the second port 120 in the channels formed by the first flow pattern FCP1 in the corresponding first end portion 101 and second end portion 102 of the press plate 2010.

[0075] exist Figure 7a The image shows a heat exchanger 1 configured for a "Z-flow" variant, and... Figure 7b The image shows a detailed view of how the hot flow H and cold flow C are arranged in a pressure plate 201 when the heat exchanger 1 is configured for "Z-shaped flow". Figure 6a and 6b The variant shown is similar. Figure 7b The pressing plates can be arranged into a single, integrated wide plate, in which nine parallel pressing patterns are arranged into one plate.

[0076] Figure 7bThis is a partial cross-sectional view of the upper pressing plate and the flat plate centered in the longitudinal direction of the plate. The lower pressing plate includes a second flow channel pattern FCP2 in the corresponding first end portion 101 and second end portion 102, such that the hot flow H can bypass the first port 110 and the second port 120. The upper pressing plate includes a first flow channel pattern FCP1 in the corresponding first end portion 101 and second end portion 102, thereby introducing the cold flow into the first port 110 and the second port 120, respectively. It can be seen that the cold flow is introduced into the first port 110 from the lower side of the pressing plate 201, whereby the cold fluid C flows through the second port 120 in a direction opposite to that of the incoming cold fluid C along a discrete channel formed by the third flow channel pattern FCP3 in the middle portion 103 of the pressing plate 201. This can also be seen from Figure 7a From this, we can see that Figure 7a A plate heat exchanger 1 with nine parallel stacks 301 of plates is shown, wherein a first port 110 is arranged on the front side of the heat exchanger 1 in the view shown, and a second port 120 (port not shown) is arranged on the rear side of the heat exchanger in the view shown.

[0077] exist Figure 8a The diagram shows a heat exchanger 1 configured for an "L-shaped flow" variant, and... Figure 8b The image shows a detailed view of a pressure plate 201 configured for use in a heat exchanger with an "L-shaped flow". Figure 8b A pressing plate 201 is shown, which includes a first flow channel pattern FCP1 in its second end portion 102, allowing a cold fluid flow C to enter the pressing plate 201 via a second port 120. The pressing plate 201 includes a second flow channel pattern FCP2 in its first end portion 101, allowing the cold fluid to bypass the first port 110. From... Figure 8a As can be seen, the cold flow C can be introduced into the second port 120 from the front of the heat exchanger 1. The cold flow C flows along discrete channels formed in the middle portion 103 of the pressure plate 201 by the third flow channel pattern FCP3, and then bypasses the first port 110, thus exhibiting an "L-shaped flow". This can also be seen from... Figure 8a From this, we can see that Figure 8a The diagram shows a stack of nine parallel stacks 301 with plates or a stack of plates 1020 integrally combined with nine parallel ports, wherein, in the view shown, the second port 120 is arranged on the front side of the heat exchanger 1. The heat flow H can be arranged similarly, but flows into the heat exchanger 1 in a counter-current manner. Thus, the heat flow H can enter the heat exchanger 1 from the rear via the second port 120 and flow along the third flow channel pattern FCP3 in the middle portion 103 of the press plate 201, and then bypass the first port 110, thus forming an "L-shaped flow". Clearly, the corresponding hot and cold flows can be arranged to enter and exit the heat exchanger plates in many different ways.

[0078] exist Figure 8a In heat exchangers and Figure 1a , 1b In the type of heat exchanger shown in Figure 2, it should be noted that in the plate heat exchanger 1 of this type, every other press plate 201 (which includes one or two fluid ports in the corresponding first longitudinal end portion 101 and second longitudinal end portion 102, and a first fluid channel pattern FCP1 guiding fluid flow to one of the fluid ports and / or a second fluid channel pattern FCP2 bypassing the other of the fluid ports) is fixed to the plate 201' with a first surface facing the plate, and every other press plate 201 is fixed to the plate with a second surface facing the opposite plate. In this way, the press plates are attached to the plate in an alternating manner and only one pressing tool is required to provide the press plates.

[0079] Generally, plate heat exchangers can be classified as reheat heat exchangers with countercurrent energy recovery. Reheat heat exchangers are effective and provide good heat transfer efficiency per unit surface area.

[0080] In addition to internal fluid ports 110; 120; 130; 140, the heat exchanger may also include at least one external fluid connector 8, such as those provided by... Figure 2 As shown. Fluid flow can be collected in an external connector, which is configured for "L-shaped flow" and as... Figure 8a and 8b This is particularly advantageous in the heat exchangers shown.

[0081] The plate heat exchanger disclosed herein can be configured for heat exchange between two fluids, wherein the fluids may be gases. The plate heat exchanger can also be configured for high-pressure applications.

[0082] This disclosure further relates to a process for manufacturing the heat exchanger plate module as described above. The process includes... • Cutting metal sheets to provide two or more metal sheets, each sheet having extensions in its longitudinal direction l, its transverse direction t perpendicular to the longitudinal direction, and its thickness direction d. • Press at least one of the metal plates in a pressing tool, wherein the pressing tool is configured to provide a pressed pattern P to the heat exchanger plate. • Provides a flat plate with an external shape and size corresponding to the pressing plate in both the longitudinal and transverse directions. • We offer heat exchanger plate modules, including pressed plates and flat plates. • Assemble the heat exchanger plate modules in a stack such that every other plate is a press plate 201 and every other plate is a flat plate 201'. • Connect the modules together to provide a stacked plate heat exchanger that includes heat exchanger modules.

[0083] The present invention also relates to a plate heat exchanger comprising a frame and a plurality of stacked heat exchanger plate modules. Connecting modules to provide the heat exchanger can be performed by fusion welding, brazing, welding, or diffusion welding. Alternatively, the heat exchanger may be a gasketed heat exchanger.

[0084] Those skilled in the art will recognize that the invention is not limited to the examples described above. They will further recognize that modifications, combinations, and variations can be made within the scope of the appended claims. Furthermore, by studying the drawings, the disclosure, and the appended claims, those skilled in the art can understand and implement variations of the disclosed embodiments when practicing the claimed invention.

Claims

1. A heat exchanger plate module (200), the heat exchanger plate module (200) comprising a pressing plate (201) and a flat plate (201'), the pressing plate and the flat plate having two opposite side surfaces, and extensions in the longitudinal direction, the transverse direction perpendicular to the longitudinal direction and the thickness direction of the pressing plate and the flat plate, wherein, The pressing plate (201) and the flat plate (201') have substantially the same external shape in the longitudinal direction and the transverse direction, and the plate in the module includes: • A first longitudinal end portion (101) including at least one fluid port (110), • A second longitudinal end portion (102) including at least one fluid port (120), • An intermediate heat exchange section (103) is arranged between the first longitudinal end portion and the second longitudinal end portion, wherein The pressing plate (201) further includes a pressing corrugated pattern having alternating top and bottom edges in the thickness direction of the pressing plate (201), the pressing pattern including: • In the first longitudinal end portion (101) and / or the second longitudinal end portion (102), fluid is guided to a first fluid channel pattern (FCP1) in the at least one fluid port (110; 130) and / or a second fluid channel pattern (FCP2) bypassing the at least one fluid port (120; 140). • In the intermediate heat exchange section (103), a third fluid channel pattern (FCP3) is fluidly connected to the first fluid channel pattern (FCP1) and / or the second fluid channel pattern (FCP2), and includes a plurality of longitudinally extending wavy pressing lines (1030) configured to form discrete fluid channels (31) in the longitudinal direction of the heat exchanger plate module (200) when the pressing plate (201) is attached to the plate (201'), wherein fluid is impermeable between the discrete fluid channels formed by the plurality of longitudinally extending wavy pressing lines.

2. The heat exchanger plate module according to claim 1, wherein, The flat plate (201') is attached to the pressing plate (201) along the extensions of the first fluid channel pattern (FCP1), the second fluid channel pattern (FCP2) and the third fluid channel pattern (FCP3).

3. The heat exchanger plate module according to claim 1 or 2, wherein, The first fluid channel pattern (FCP1) and / or the second fluid channel pattern (FCP2) form a discontinuous pattern with the third fluid channel pattern (FCP3) by utilizing the interruption portion (151; 152) between the first fluid channel pattern (FCP1) and / or the second fluid channel pattern (FCP2) and the third fluid channel pattern (FCP3).

4. The heat exchanger plate module according to claim 3, wherein, The amount of fluid channels formed by the corresponding first fluid channel pattern (FCP1) and second fluid channel pattern (FCP2) in the pressing plate (201) together with the plate (201') is less than the amount of discrete flow channels formed by the third fluid channel pattern (FCP3) in the pressing plate (201) and the plate (201').

5. The heat exchanger plate module according to claim 1 or 2, wherein, Each of the first longitudinal end portion (101) and the second longitudinal end portion (102) includes two fluid ports (110, 130; 120, 140).

6. The heat exchanger plate module according to claim 5, wherein, The corresponding first longitudinal end portion (101) and second longitudinal end portion (102) include a first fluid channel pattern (FCP1) and a second fluid channel pattern (FCP2) that guide fluid flow into and / or around the at least one fluid port (110; 140) and / or around the at least one fluid port (120; 130), wherein the first fluid channel pattern (FCP1) and the second fluid channel pattern (FCP2) are configured to provide diagonal or parallel flow between the fluid ports (110, 140; 120, 140) in the first longitudinal end portion (101) and the second longitudinal end portion (102).

7. The heat exchanger plate module according to claim 5, wherein, The corresponding first longitudinal end portion (101) and second longitudinal end portion (102) include a first fluid channel pattern (FCP1) and a second fluid channel pattern (FCP2) that guide fluid flow into and / or around the at least one fluid port (120; 130), and wherein the first fluid channel pattern (FCP1) and the second fluid channel pattern (FCP2) are configured to provide parallel flow between the fluid ports (110, 140; 120, 140) in the first longitudinal end portion (101) and the second longitudinal end portion (102).

8. The heat exchanger plate module according to claim 1 or 2, wherein, The pressing plate (201) and the flat plate (201') have a thickness of 0.25 to 5.0 mm or 0.3 to 3.0 mm.

9. The heat exchanger plate module according to claim 1 or 2, wherein, The pressing depth of the fluid channel pattern (FCP1; FCP2; FCP3) is at least 0.5 mm.

10. A plate heat exchanger (1), the plate heat exchanger (1) comprising a plurality of stacked heat exchanger plate modules (200), wherein, In the stack (301), the modules are arranged such that every other plate is a press plate (201) and every other plate is a flat plate (201'), wherein each of the flat plate and the press plate has two opposite side surfaces, extensions in the longitudinal direction, the transverse direction perpendicular to the longitudinal direction, and the thickness direction of the press plate and the flat plate, the flat plate and the press plate comprising • A first longitudinal end portion (101) including at least one fluid port (110), • A second longitudinal end portion (102) including at least one fluid port (120), • An intermediate heat exchange section (103) is arranged between the first longitudinal end portion and the second longitudinal end portion, wherein The pressing plate also includes a pressing pattern formed in the thickness direction of the pressing plate (201) having alternating top and bottom corrugated patterns, the pressing pattern including... • In the first longitudinal end portion (101) and / or the second longitudinal end portion (102), fluid is guided to a first fluid channel pattern (FCP1) in the at least one fluid port (110; 120) and / or a second fluid channel pattern (FCP2) bypassing the at least one fluid port (110; 120). • In the intermediate heat exchange section (103), a third fluid channel pattern (FCP3) is fluidly connected to the first fluid channel pattern (FCP1) and / or the second fluid channel pattern (FCP2), and includes a plurality of longitudinally extending wavy pressing lines configured to form finned discrete fluid channels (31) in the longitudinal direction of the pressing plate (201) when the pressing plate (201) is attached to the flat plate (201'), wherein fluid is impermeable between the discrete fluid channels formed by the plurality of longitudinally extending wavy pressing lines.

11. The plate heat exchanger (1) according to claim 10, wherein, The plate (201') of each module (200) is attached to the pressing plate (201) of the corresponding module (200) and to the pressing plate (201) of the adjacent module (200), wherein the first fluid channel pattern (FCP1), the second fluid channel pattern (FCP2) and the third fluid channel pattern (FCP3) form discrete fluid channels having contact surfaces along the length of the fluid channel pattern.

12. The plate heat exchanger (1) according to claim 10 or 11, wherein, The pressing plate (201) includes at least one fluid port (110; 120) and a first fluid channel pattern (FCP1) guiding fluid flow into the at least one fluid port (110; 120) in each of the corresponding first longitudinal end portions (101; 102), and the pressing plate (201) also includes at least one fluid port (110; 120) and a second fluid channel pattern (FCP2) bypassing the at least one fluid port (110; 120) in each of the corresponding first longitudinal end portions (101; 102).

13. The plate heat exchanger (1) according to claim 10 or 11, wherein, The pressing plate (201) includes two fluid ports (110, 130; 120, 140) in the corresponding first longitudinal end portion (101) and second longitudinal end portion (102), and a first fluid channel pattern (FCP1) guiding fluid flow to one of the fluid ports (110, 130) and a second fluid channel pattern (FCP2) bypassing the other of the fluid ports (120, 140). The pressing plate (201) is fixed to the plate with a first surface facing the plate every other one, and with a second surface facing the opposite plate every other one.

14. The plate heat exchanger (1) according to claim 10 or 11, wherein, The plate heat exchanger (1) may be configured such that a stack (301) of at least two heat exchanger plate modules (200) is arranged in parallel by attaching the modules together along two opposite longitudinal sides of the modules, or wherein at least two pressed patterns are arranged in parallel on a plate, each pattern corresponding to a pressed pattern of a pressed plate (201) of a module (200).

15. The plate heat exchanger (1) according to claim 10 or 11, wherein, The fluid ports (110; 120; 130; 140) can be connected to an external fluid connector (8).

16. The plate heat exchanger (1) according to claim 10 or 11, wherein, The plate heat exchanger is configured for heat exchange between two gases.

17. The plate heat exchanger (1) according to claim 10 or 11, wherein, The plate heat exchanger is configured for high-pressure applications.

18. A process for producing a plate heat exchanger (1) according to any one of claims 10 to 17, the process comprising: • Cutting metal sheets to provide two or more metal sheets having extensions in the longitudinal direction, the transverse direction perpendicular to the longitudinal direction, and the thickness direction. • Pressing at least one of the metal plates in a pressing tool, wherein the pressing tool is configured to provide a pressed pattern to the heat exchanger plate. • Provide a flat plate having an external shape and size corresponding to the pressing plate in the longitudinal direction and the transverse direction. • We offer heat exchanger plate modules, including pressed plates and flat plates. • Assemble the heat exchanger plate modules in a stack such that every other plate is a pressed plate (201) and every other plate is a flat plate (201'). • Connect the modules together to provide a stacked plate heat exchanger comprising heat exchanger modules.

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