S-shaped corrugated heat exchange plate set for plate heat exchanger and plate heat exchanger

Abstract

The application discloses an S-shaped corrugated heat exchange plate group for a plate heat exchanger and the plate heat exchanger, which comprises a first plate, the first plate is formed with S-shaped convex waves which protrude upward from a first upper plate surface, the S-shaped convex waves are spaced in a row in a first direction and are spaced in a column in a second direction perpendicular to the first direction, and the S-shaped convex waves are in an S shape in the second direction, a side of the S-shaped convex waves of the first plate forms part of a first medium channel, and an opposite side of the S-shaped convex waves of the first plate forms part of a second medium channel. According to the application, the second medium channel comprises a curved S-shaped channel, so that the structure of the second medium channel is more complex, the path of the second medium channel is lengthened, the path of the second medium flowing on the plate is more and longer, the heat transfer effect is better, and the heat transfer is more uniform. Moreover, the distance between adjacent S-shaped convex waves can be set to be relatively large due to the S-shaped corrugation, so that the resistance of the first medium in the first medium channel is relatively small.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchangers, in particular to an S-shaped corrugated heat exchange plate set for a plate heat exchanger and a plate heat exchanger. BACKGROUND

[0002] A fully welded plate heat exchanger is an energy-saving and environmentally friendly device that uses heat exchange corrugated plates as heat exchange elements to exchange heat between at least two media. The existing plate of the fully welded plate heat exchanger is mainly a straight strip-shaped corrugation arranged at intervals. The plate forms a straight channel on the convex side of the wave shape, and the straight channel is the channel between adjacent corrugations, through which one medium flows. The plate forms a wave-shaped channel on the concave side of the wave shape, and the other medium flows through the wave-shaped channel.

[0003] The existing straight strip-shaped corrugated plate has a simple wave-shaped channel structure and a short path, which makes the overall heat transfer of the plate uneven. In addition, the wave-shaped spacing needs to meet the requirement of forming a channel for the medium to pass through, which limits the design of the wave-shaped spacing. This wave-shaped spacing will cause the other side medium to have a large resistance in the straight channel, which limits the application of the product.

[0004] Therefore, there is a need for an S-shaped corrugated heat exchange plate set for a plate heat exchanger and a plate heat exchanger to at least partially solve the above problems. SUMMARY

[0005] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the detailed description section. The summary section of the present application does not mean to attempt to limit the key features and essential technical features of the claimed technical solution, nor to determine the protection scope of the claimed technical solution.

[0006] To at least partially solve the above problems, according to a first aspect of the present application, an S-shaped corrugated heat exchange plate set for a plate heat exchanger is provided, which comprises:

[0007] A first plate has opposite first upper and lower plate surfaces, and an S-shaped convex wave protruding upward from the first upper plate surface is formed,

[0008] Wherein, the S-shaped convex waves are arranged in rows in a first direction and in columns in a second direction perpendicular to the first direction, and are S-shaped in the second direction,

[0009] The side of the S-shaped convex wave of the first plate forms part of a first medium channel, and the side opposite to the S-shaped convex wave of the first plate forms part of a second medium channel.

[0010] According to the scheme, the plate can form a second medium channel on the side of the S-shaped convex wave, and the second medium channel comprises a curved S-shaped channel, so that the structure of the second medium channel is more complex, the path of the second medium channel is lengthened, the path of the second medium flowing on the plate is more and longer, the heat transfer effect is better, and the heat transfer is more uniform. And the plate can form a first medium channel on the side of the S-shaped convex wave, the distance between adjacent S-shaped convex waves can be set larger due to the S-shaped wave, so as to avoid that the resistance of the first medium in the first medium channel is large, thereby the application of the product can be more extensive.

[0011] Optionally, the S-shaped wave heat exchange plate set further comprises: a second plate, the second plate has opposite second upper and lower plate surfaces, and is formed with S-shaped concave waves protruding downward from the second lower plate surface,

[0012] Wherein, the S-shaped concave waves are spaced in rows in the first direction and in columns in the second direction, and are S-shaped in the second direction,

[0013] The side of the S-shaped concave waves of the second plate forms part of the first medium channel, and the side opposite to the S-shaped concave waves of the second plate forms part of the second medium channel.

[0014] According to the scheme, the second plate can form a second medium channel with both the first plate located above it and the first plate located below it.

[0015] Optionally, the second plate is located above the first plate, the first medium channel extending in the second direction is formed between the second plate and the first plate, and the S-shaped convex waves and the S-shaped concave waves abut to form multiple support points in rows and columns.

[0016] According to the scheme, one S-shaped convex wave and one corresponding S-shaped concave wave can constitute an S-shaped wave group, and the S-shaped wave group constitutes a support point, and multiple support points can exist in each S-shaped wave group, thereby increasing the support points and the contact area between the two plates, so that the pressure bearing capacity is stronger and the deformation is not easy, and the structure of the plate group is more firm.

[0017] Optionally, the second plate is located below the first plate, the second upper plate surface and the first lower plate surface are in surface contact, the S-shaped convex waves in the row are arranged in sequence in the first direction and the S-shaped concave waves in the row are arranged in sequence, and the two are sequentially communicated to form a second medium transverse channel extending in the first direction. The S-shaped convex waves in the row are arranged in sequence in the first direction and the S-shaped concave waves in the row are arranged in sequence, and the two are sequentially communicated to form a second medium transverse channel extending in the first direction.

[0018] According to the scheme, the second medium transverse channel with S-shaped corrugation can be formed by arranging the S-shaped convex waves and the corresponding S-shaped concave waves staggered in the first direction, and the second medium transverse channel can extend from one end of the plate group to the other end along the first direction.

[0019] Optionally, the S-shaped convex waves in the row and the S-shaped concave waves in the row are sequentially communicated in the second direction to form a second medium longitudinal channel extending in the second direction.

[0020] According to the scheme, the second medium transverse channel can be communicated with the second medium longitudinal channel through the S-shaped channels formed by the S-shaped convex waves and the S-shaped channels formed by the S-shaped concave waves, forming a second medium channel similar to a mesh, thereby further making the structure of the second medium channel more complex and the path of the second medium channel longer, so that the second medium flows through more and longer paths on the plate, and the heat transfer effect is better and more uniform.

[0021] Optionally, the S-shaped convex waves in the odd rows are arranged staggered with the S-shaped convex waves in the even rows in the second direction; and the S-shaped concave waves in the odd rows are arranged staggered with the S-shaped concave waves in the even rows in the second direction.

[0022] According to the scheme, the second medium longitudinal channel can be easily formed, and the second medium longitudinal channel is arranged neatly and uniformly, and the structure of the plate group is simple, facilitating production and manufacturing.

[0023] Optionally, the S-shaped convex waves in the odd rows are arranged aligned with the S-shaped convex waves in the even rows in the second direction; and the S-shaped concave waves in the odd rows are arranged aligned with the S-shaped concave waves in the even rows in the second direction.

[0024] According to the scheme, a plurality of independent second medium channels extending in the first direction are formed, and the adjacent second medium channels are not communicated, and the structure of the plate group is simple, facilitating production and manufacturing.

[0025] Optionally, all the S-shaped convex waves are arranged in the same wave shape, and all the S-shaped concave waves are arranged in the same wave shape; or

[0026] The S-shaped convex waves in the odd rows and the S-shaped convex waves in the even rows are arranged in the opposite wave shape in the first direction, and the S-shaped concave waves in the odd rows and the S-shaped concave waves in the even rows are arranged in the opposite wave shape in the first direction.

[0027] According to the scheme, whether the wave shape of the S-shaped convex waves is consistent and the wave shape of the S-shaped concave waves is consistent, the S-shaped convex waves and the S-shaped concave waves can be easily designed to be communicated, and the design freedom is higher. Among them, the scheme with consistent wave shape is simple in structure, facilitating production and manufacturing.

[0028] Optionally, the first plate and the second plate are configured identically and arranged reversely to each other.

[0029] According to the present solution, the plate pieces of a single plate type can be used to complete the assembly of the plate piece group, and the interiors of the second medium channel and the first medium channel are uniform.

[0030] Optionally, the first plate has a first end edge and a second end edge in the first direction, the S-shaped convex waves include a first S-shaped convex wave close to the first end edge and a second S-shaped convex wave close to the second end edge, and the distance from the first S-shaped convex wave to the first end edge is different from the distance from the second S-shaped convex wave to the second end edge.

[0031] According to the present solution, the two end portions of the plate piece are designed asymmetrically, so that the plate pieces of a single plate type can be used to complete the assembly of the plate piece group.

[0032] Optionally, the first S-shaped convex wave and the second S-shaped convex wave are non-S-shaped full waves.

[0033] According to the present solution, the second medium transverse channel can be guaranteed to communicate with the second medium port of the end portion.

[0034] Optionally, the first plate is formed with a first step protruding upward from the first upper plate face at the two end portions in the first direction, and the second plate is formed with a second step protruding downward from the second lower plate face at the two end portions in the first direction,

[0035] The second medium port is formed between the first step and the second step, and the second medium port communicates with the second medium transverse channel.

[0036] According to the present solution, the steps can separate the second medium flow channel and the first medium flow channel well, respectively.

[0037] Optionally, the S-shaped convex wave communicates with at least one of the S-shaped upper portion and the S-shaped lower portion of the S-shaped concave wave; in this way, the S-shaped upper portion and the S-shaped lower portion of the S-shaped wave can be used for the communication of the second medium channel, and the design freedom is higher.

[0038] And / or the size of the S-shaped upper portion of the S-shaped convex wave in the first direction is the same as the size of the S-shaped lower portion of the S-shaped convex wave, and the size of the S-shaped upper portion of the S-shaped concave wave in the first direction is the same as the size of the S-shaped lower portion of the S-shaped concave wave.

[0039] According to the present solution, whether the waveforms of the S-shaped convex wave are consistent and whether the waveforms of the S-shaped concave wave are consistent, the S-shaped convex wave and the S-shaped concave wave can be easily designed to communicate with each other, and the design freedom is higher.

[0040] Optionally, the first plate is connected with the second plate located thereunder to form a plate pair, the plate pairs are stacked one on top of another, and the first medium channel extending in the second direction is formed between adjacent plate pairs.

[0041] According to another aspect of the present application, there is provided a plate heat exchanger comprising a set of S-corrugated heat exchange plates according to any of the above aspects. BRIEF DESCRIPTION OF DRAWINGS

[0042] The following drawings are included herewith in the present application to assist in understanding the application. The drawings in their entirety illustrate embodiments of the application and are a part of the detailed description. The drawings provided are for purposes of illustration only and the descriptions thereof are illustrative only.

[0043] In the drawings:

[0044] Figure 1 is a perspective view of a set of S-corrugated heat exchange plates according to a first preferred embodiment of the present application;

[0045] Figure 2 is a top view of a first plate as shown in Figure 1

[0046] Figure 3 is a top view of a plate pair as shown in Figure 1

[0047] Figure 4 is a perspective cross-sectional view of a plate pair as shown in Figure 1

[0048] Figure 5 is a partial enlarged view of section A in Figure 4

[0049] Figure 6 is a partial side view of a plate pair as shown in Figure 1

[0050] Figure 7 is a partial side view of a plate pair as shown in Figure 1

[0051] Figure 8 is a top view of a first plate according to a second preferred embodiment of the present application;

[0052] Figure 9 is a top view of a plate pair comprising Figure 8

[0053] Figure 10 ​​​​​​​A top view schematic diagram of the first plate of the S-shaped corrugated heat exchange plate assembly according to the third preferred embodiment of this application; and

[0054] Figure 11 For including Figure 10 The diagram shows a top view of the first plate pair, with the S-shaped concave wave of the second plate shown in perspective.

[0055] Reference Signs List

[0056] 1 plate group

[0057] 2 Second Medium Port

[0058] 3-plate pair

[0059] 10 First Plate

[0060] 11First on the board

[0061] 12 First bottom panel

[0062] 13S-shaped convex wave

[0063] 14 First edge

[0064] 15 Second edge

[0065] 16 First Step

[0066] 17 First S-shaped convex wave

[0067] 18 Second S-shaped convex wave

[0068] 20 Second Plate

[0069] 21 Second upper panel

[0070] 22 Second bottom panel

[0071] 23S-shaped concave wave

[0072] 24 Second Step Detailed Implementation

[0073] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0074] For a thorough understanding of the present application, reference will be made to the following detailed description. It is apparent that the application can be practiced without the specific details disclosed below. The following detailed description is provided as an example of the application.

[0075] It is to be understood that the terms used herein are merely descriptive, but not intended to be limiting of the exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0076] The ordinal numbers such as "first" and "second" used in the present application are merely identifiers but do not have any other meaning, for example, a particular order. Also, for example, the term "first member" itself does not imply the existence of a "second member", and the term "second member" itself does not imply the existence of a "first member".

[0077] It is noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and similar terms are used for explanation purposes only and are not limiting.

[0078] Exemplary embodiments according to the present application will now be described in detail with reference to the accompanying drawings. The exemplary embodiments, however, can be implemented in various forms, and should not be construed as being limited to the embodiments set forth herein. It will be understood that the exemplary embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0079] First Preferred Embodiment

[0080] Figures 1 to 7 An S-corrugated heat exchanger plate pack according to the first preferred embodiment of the present application is schematically shown for a plate heat exchanger. As shown in Figure 1 The S-corrugated heat exchanger plate pack 1 (hereinafter referred to as plate pack) can include a plurality of first plates 10 and a plurality of second plates 20. The first plates 10 and the second plates 20 are arranged alternately in an up-and-down direction.

[0081] The first plate 10 and the second plate 20 located below it can be connected by any suitable means such as welding or screw fastening to form a plate pair. The plate pairs are stacked on top of each other and can be connected by any suitable means such as welding or screw fastening to form the plate group 1 of this application. That is, the plate group 1 includes multiple plate pairs composed of the first plate 10 and the second plate 20.

[0082] like Figure 1 As indicated by the middle arrow, the second medium can enter the plate assembly 1 from one end in the first direction D1, flow within the plate assembly 1, and then exit from the other end in the first direction D1; the first medium can enter the plate assembly 1 from one end in the second direction D2, which is perpendicular to the first direction D1, flow within the plate assembly 1, and then exit from the other end in the second direction D2. The first and second media are different; one can be a liquid and the other a gas, or both can be gases, or both can be liquids. Therefore, the plate assembly 1 can be used for gas-liquid heat exchange, as well as gas-gas heat exchange, liquid-liquid heat exchange, condensation, and other applications. The first medium is preferably a gas, and the second medium is preferably a liquid.

[0083] It is understood that the first direction D1 and the second direction D2 are related to the overall shape of the plate assembly 1. In the illustrated embodiment, the plate assembly 1 is generally configured as a cuboid shape, with the first direction D1 being the length direction and the second direction D2 being the width direction.

[0084] It should be noted that the directional terms used in this document to describe the various components and parts of plate group 1, such as "up," "down," "above," "below," "upward," "downward," "facing upward," and "facing downward," are relative to a horizontally placed and upright state (e.g., ...). Figure 1 As shown in the figure, this refers to plate group 1.

[0085] like Figure 2 As shown, the first plate 10 has an opposite first upper plate surface 11 and a first lower plate surface 12 (see...). Figure 5 Furthermore, it forms an S-shaped convex wave 13 that protrudes upward from the first upper plate surface 11. Specifically, the S-shaped convex wave 13 is recessed from the first lower plate surface 12 and protrudes upward from the first upper plate surface 11, exhibiting a concave-convex shape. The S-shaped convex wave 13 is S-shaped in the second direction D2, that is, in Figure 2 In the shown state, the S-shape is placed vertically. The S-shaped convex waves 13 can be spaced in rows in the first direction D1 and in columns in the second direction D2. The number of rows and columns of the S-shaped convex waves 13 can be set as needed.

[0086] The side of the first plate 10 containing the S-shaped convex wave 13 (or the convex side of the S-shaped convex wave 13) can form part of a first dielectric channel. Specifically, the space between the S-shaped convex waves 13 forms the first dielectric channel. The side of the first plate 10 opposite to the S-shaped convex wave 13 (or the concave side of the S-shaped convex wave 13) can form part of a second dielectric channel. Specifically, the concave space of the S-shaped convex wave 13 forms the second dielectric channel, thus the second dielectric channel has an S-shaped waveform.

[0087] In this embodiment, a second medium channel can be formed on the concave side of the S-shaped convex wave 13. This second medium channel includes a curved S-shaped channel, making its structure more complex and extending its path. This results in the second medium having more paths to flow through on the plate, leading to better and more uniform heat transfer. Furthermore, a first medium channel can be formed on the convex side of the S-shaped convex wave 13. The distance between adjacent S-shaped convex waves 13 can be set larger due to the S-shaped structure, avoiding excessive resistance of the first medium within the first medium channel. This allows for a wider range of product applications.

[0088] like Figures 3 to 5 As shown, the second plate 20 has an opposite second upper plate surface 21 and a second lower plate surface 22, and forms an S-shaped concave wave 23 that protrudes downward from the second lower plate surface 22. Specifically, the S-shaped concave wave 23 is recessed from the second upper plate surface 21 and protrudes downward from the second lower plate surface 22, and has a concave-convex shape. The S-shaped concave wave 23 is S-shaped in the second direction D2, that is, in Figure 3 In the state shown, the S-shape is placed vertically. The S-shaped concave waves 23 can be spaced in rows in the first direction D1 and in columns in the second direction D2. The number of rows and columns of the S-shaped concave waves 23 can be the same as the number of rows and columns of the S-shaped convex waves 13.

[0089] The side of the second plate 20 containing the S-shaped concave wave 23 (or, the convex side of the S-shaped concave wave 23) can form part of the first dielectric channel. Specifically, the space between the S-shaped concave waves 23 forms the first dielectric channel. The side of the second plate 20 opposite to the S-shaped concave wave 23 (or, the concave side of the S-shaped concave wave 23) can form part of the second dielectric channel. Specifically, the concave space of the S-shaped concave wave 23 forms the second dielectric channel, thus the second dielectric channel has an S-shaped waveform.

[0090] The second plate 20 can form a second medium channel with the first plate 10 located above it, and the second plate 20 can form a first medium channel with the first plate 10 located below it.

[0091] For the first plate 10 and the second plate 20 located above it:

[0092] The first plate 10 and the second plate 20 can form a first medium channel extending along the second direction D2. The S-shaped convex waves 13 and the S-shaped concave waves 23 face and abut each other to form a plurality of support points in rows and columns, so that the first plate 10 can support the second plate 20 above it upwardly. Further, the upper surface of the S-shaped convex wave 13 abuts the lower surface of the S-shaped concave wave 23. In this embodiment, one S-shaped convex wave 13 and one corresponding S-shaped concave wave 23 can constitute an S-shaped wave group, and each S-shaped wave group can have a plurality of support points, thereby increasing the support points and the contact area between the two plates, so that the pressure bearing capacity is stronger, the deformation is not easy, and the structure of the plate group 1 is more firm.

[0093] For the first plate 10 and the second plate 20 below it:

[0094] Figures 3 to 7 The first plate 10 and the second plate 20 below it are shown, i.e., a plate pair is shown. The second upper plate surface 21 and the first lower plate surface 12 are in surface contact (see Figure 6 and Figure 7 ), so that the second plate 20 can support the first plate 10 upwardly. As shown in Figure 3 , the rows of S-shaped convex waves 13 can be arranged in sequence with the rows of S-shaped concave waves 23 in the first direction D1. It should be noted that in Figure 3 , the S-shaped concave waves 23 of the second plate 20 are shown in perspective, and compared with Figure 2 , the S-shaped concave waves 23 in Figure 3 are in addition to the S-shaped convex waves 13.

[0095] The rows of S-shaped convex waves 13 and the rows of S-shaped concave waves 23 are in sequence in the first direction D1 to form a second medium transverse channel extending along the first direction D1. Specifically, the concave spaces of the S-shaped convex waves 13 and the concave spaces of the S-shaped concave waves are in communication in the first direction D1. It can be understood that the second medium transverse channel includes the S-shaped channels formed by the S-shaped convex waves 13, the communication channels of the S-shaped convex waves 13 and the S-shaped concave waves 23 in the first direction D1, and the S-shaped channels formed by the S-shaped concave waves 23. Specifically, the S-shaped convex waves 13 of each row are in communication with the S-shaped convex waves 13 of the adjacent row through the corresponding row of S-shaped concave waves 23 below, and the S-shaped concave waves 23 of each row are in communication with the S-shaped concave waves 23 of the adjacent row through the corresponding row of S-shaped convex waves 13 above. The S-shaped convex waves 13 of each column and the S-shaped concave waves 23 of the corresponding column form the second medium transverse channel.

[0096] As shown in Figure 5As shown by the arrows, the second medium enters from the second medium inlet at the end of the plate pair, flows through the S-shaped convex wave 13, the S-shaped concave wave 23, the S-shaped convex wave 13, the S-shaped concave wave 23, the S-shaped convex wave 13, and so on, and then flows out from the second medium outlet at the other end of the plate pair.

[0097] In this embodiment, the S-shaped convex waves 13 and the corresponding S-shaped concave waves 23 are arranged staggered in the first direction D1, so that the second medium transverse channel with S-shaped corrugation is formed, and the second medium transverse channel can extend from one end of the plate set 1 to the other end along the first direction D1.

[0098] Referring back to Figure 3 In this embodiment, the S-shaped convex waves 13 in each row are in communication with the S-shaped concave waves 23 in the corresponding row and the S-shaped convex waves 13 in the adjacent row in the second direction D2, and the S-shaped concave waves 23 in each row are in communication with the S-shaped convex waves 23 in the corresponding row and the S-shaped concave waves 23 in the adjacent row in the second direction D2, so that the second medium longitudinal channel extending in the second direction D2 is formed. Specifically, the concave space of the S-shaped convex wave 13 is in communication with the concave space of the S-shaped concave wave in the second direction D2. It can be understood that the second medium longitudinal channel includes the S-shaped channel formed by the S-shaped convex wave 13, the communication channel of the S-shaped convex wave 13 and the S-shaped concave wave 23 in the second direction D2, and the S-shaped channel formed by the S-shaped concave wave 23. Specifically, the S-shaped convex wave 13 in each row is in communication with the S-shaped convex wave 13 in the adjacent row through the corresponding S-shaped concave wave 23 below, and the S-shaped concave wave 23 in each row is in communication with the S-shaped concave wave 23 in the adjacent row through the corresponding S-shaped convex wave 13 above. The S-shaped convex wave 13 in each row and the S-shaped concave wave 23 in the corresponding row form the second medium longitudinal channel.

[0099] In this embodiment, the second medium transverse channel can be in communication with the second medium longitudinal channel through the S-shaped channels formed by the S-shaped convex wave 13 and the S-shaped concave wave 23, so that a network-like second medium channel is formed, and the structure of the second medium channel is more complex, the path of the second medium channel is longer, and the path of the second medium flowing on the plate is more and longer, so that the heat transfer effect is better and more uniform.

[0100] Referring back to Figure 2 The S-shaped convex waves 13 in the odd rows are arranged staggered with the S-shaped convex waves 13 in the even rows in the second direction D2, and the S-shaped concave waves 23 in the odd rows are arranged staggered with the S-shaped concave waves 23 in the even rows in the second direction D2. In this way, the second medium longitudinal channel can be easily formed, and the second medium longitudinal channel is arranged neatly and uniformly, and the structure of the plate set 1 is simple, which is convenient for production and manufacturing.

[0101] At least one of the upper and lower S-shaped portions of the S-shaped concave wave 23 and the S-shaped convex wave 13 is connected. Specifically, for the S-shaped convex wave 13 and the S-shaped concave wave 23 forming the transverse channel of the second medium, the upper S-shaped portions of both the S-shaped convex wave 13 and its corresponding S-shaped concave wave 23 are connected, as are the lower S-shaped portions; that is, the upper and lower S-shaped portions of both the S-shaped concave wave 23 and the S-shaped convex wave 13 are connected. For the S-shaped convex wave 13 and the S-shaped concave wave 23 forming the longitudinal channel of the second medium, at least the upper S-shaped portions of both the S-shaped convex wave 13 and the S-shaped concave wave 23 are connected.

[0102] Preferably, the upper S-shaped portion of the S-shaped convex wave 13 and the lower S-shaped portion of the S-shaped convex wave 13 have the same dimensions in the first direction D1. The upper S-shaped portion of the S-shaped concave wave 23 and the lower S-shaped portion of the S-shaped concave wave 23 have the same dimensions in the first direction D1. Therefore, regardless of whether the waveforms of the S-shaped convex wave 13 and the S-shaped concave wave 23 are consistent, they can be easily designed to be connected, resulting in greater design freedom.

[0103] In this embodiment, the odd-numbered rows of S-shaped convex waves 13 and the even-numbered rows of S-shaped convex waves 13 can be arranged with opposite waveforms in the first direction D1. The odd-numbered rows of S-shaped concave waves 23 and the even-numbered rows of S-shaped concave waves 23 can be arranged with opposite waveforms in the first direction D1.

[0104] In the illustrated embodiment, all S-shaped convex waves 13 are configured to have the same size, and all S-shaped concave waves 23 are configured to have the same size. However, if needed and / or desired, the odd-numbered rows of S-shaped convex waves 13 and the even-numbered rows of S-shaped convex waves 13 can be configured to have different sizes, and the odd-numbered rows of S-shaped concave waves 23 and the even-numbered rows of S-shaped concave waves 23 can be configured to have different sizes.

[0105] In the illustrated embodiment, the first plate 10 and the second plate 20 have the same structure but are arranged in opposite directions. Specifically, the second plate 20 is a plate that is flipped from the first plate 10 in the first direction D1. Thus, the assembly of the plate group 1 can be completed using a single plate type, and the interiors of the formed second medium channel and the first medium channel are uniform.

[0106] like Figure 2 and Figure 7 As shown, the first plate 10 has a first step 16 protruding upward from the first upper plate surface 11 at both ends in the first direction D1, and the second plate 20 located below the first plate 10 has a second step 24 protruding downward from the second lower plate surface 22 at both ends in the first direction D1. A second medium port 2 is formed between the first step 16 and the second step 24, and the second medium port 2 communicates with the second medium transverse channel (see...). Figure 5 and Figure 6). The step can separate the second medium flow channel and the first medium flow channel well, respectively.

[0107] In the scheme that the first plate 10 and the second plate 20 have the same structure, the first plate 10 has a first end edge 14 and a second end edge 15 in the first direction D1, and the S-shaped convex waves 13 include a first S-shaped convex wave 17 close to the first end edge 14 and a second S-shaped convex wave 18 close to the second end edge 15. The distance from the first S-shaped convex wave 17 to the first end edge 14 can be different from the distance from the second S-shaped convex wave 18 to the second end edge 15. The first S-shaped convex wave 17 and the second S-shaped convex wave 18 are non-S-shaped full waves. Thus, the two end portions of the plate are designed asymmetrically, so that the plate of a single plate type can complete the assembly of the plate group 1.

[0108] Second preferred embodiment

[0109] Figure 8 and Figure 9 A part of a plate of an S-shaped corrugated heat exchange plate group according to the second preferred embodiment of the present application is shown. Except for the arrangement of the wave shape on the plate, the plate group of the second embodiment has the same structure and / or configuration as the plate group 1 of the first embodiment. Therefore, the elements having substantially the same functions as in the first embodiment will be numbered the same here, and will not be described and / or illustrated in detail for the sake of brevity.

[0110] In the second preferred embodiment, all the S-shaped convex waves 13 of the first plate 10 are arranged in the same wave shape, and all the S-shaped concave waves 23 of the second plate 20 are arranged in the same wave shape. And compared with the first preferred embodiment, the spacing between the S-shaped convex waves 13 of adjacent rows is larger, and the spacing between the S-shaped convex waves 13 of adjacent columns is larger; the spacing between the S-shaped concave waves 23 of adjacent rows is larger, and the spacing between the S-shaped concave waves 23 of adjacent columns is larger. Thus, the flow area of the first medium channel is larger, and the resistance of the first medium in the first medium channel is reduced.

[0111] The S-shaped convex waves 13 of the odd-numbered rows are arranged staggered with the S-shaped convex waves 13 of the even-numbered rows in the second direction D2. The S-shaped concave waves 23 of the odd-numbered rows are arranged staggered with the S-shaped concave waves 23 of the even-numbered rows in the second direction D2. Thus, the second medium channel includes second medium transverse channels extending in the first direction D1 and second medium longitudinal channels extending in the second direction D2. The second medium transverse channels and the second medium longitudinal channels communicate with each other to form a meshed second medium channel.

[0112] Third preferred embodiment

[0113] Figure 10 and Figure 11A portion of a plate of an S-shaped corrugated heat exchange plate set according to a second preferred embodiment of the present application is shown. The plate set of the second embodiment has the same structure and / or configuration as the plate set 1 of the first embodiment except for the arrangement of the wave shape on the plate. Therefore, elements having substantially the same functions as in the first embodiment will be numbered the same here and will not be described and / or illustrated in detail for the sake of brevity.

[0114] In the third preferred embodiment, the S-shaped convex waves 13 in the even rows are arranged in alignment in the second direction D2. The S-shaped concave waves 23 in the odd rows are arranged in alignment in the second direction D2. In this way, a plurality of independent second medium channels extending in the first direction D1 are formed, and the adjacent second medium channels are not communicated, and the structure of the plate set is simple and convenient for production and manufacture.

[0115] All the S-shaped convex waves 13 are arranged in the same wave shape, and all the S-shaped concave waves 23 are arranged in the same wave shape. Compared with the first preferred embodiment, the distance between the S-shaped convex waves 13 in the adjacent rows is larger, and the distance between the S-shaped convex waves 13 in the adjacent columns is larger; the distance between the S-shaped concave waves 23 in the adjacent rows is larger, and the distance between the S-shaped concave waves 23 in the adjacent columns is larger. In this way, the flow area of the first medium channel is larger, and the resistance of the first medium in the first medium channel is reduced.

[0116] The plate set of the present application, the plate can form a second medium channel on the concave side of the S-shaped convex wave 13, which includes a curved S-shaped channel, so that the structure of the second medium channel is more complex, and the path of the second medium channel is prolonged, so that the path of the second medium flowing on the plate is more and longer, and the heat transfer effect is better and more uniform. And the plate can form a first medium channel on the convex side of the S-shaped convex wave 13, and the distance between adjacent S-shaped convex waves 13 can be set larger due to the S-shaped corrugation, so as to avoid the resistance of the first medium in the first medium channel being too large, thereby making the application of the product more extensive.

[0117] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. Features described in one embodiment can be applied to another embodiment, either alone or in combination with other features, unless the features are not applicable or are otherwise stated.

[0118] The present application has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and illustration, and the present application is not limited to the above embodiments. More variations and modifications can be made according to the teachings of the present application, and all of these variations and modifications fall within the scope of the present application.

Claims

1. A set of S-corrugated heat exchanger plates for a plate heat exchanger, c h a r a c t e r i s e d in that Comprise: a first plate piece having opposite first upper and lower plate faces and formed with S-shaped convex waves protruding upward from the first upper plate face, and a second plate piece having opposite second upper and lower plate faces and formed with S-shaped concave waves protruding downward from the second lower plate face, wherein the S-shaped convex waves are spaced in rows in a first direction and in columns in a second direction perpendicular to the first direction and are S-shaped in the second direction; the S-shaped concave waves are spaced in rows in the first direction and in columns in the second direction and are S-shaped in the second direction, the side of the first plate piece on which the S-shaped convex waves are located forms part of a first medium channel, the side of the first plate piece opposite the S-shaped convex waves forms part of a second medium channel; the side of the second plate piece on which the S-shaped concave waves are located forms part of the first medium channel, the side of the second plate piece opposite the S-shaped concave waves forms part of the second medium channel, the second plate piece is located below the first plate piece, the second upper plate face is in surface contact with the first lower plate face, and the rows of S-shaped convex waves are sequentially misaligned with the rows of S-shaped concave waves in the first direction and sequentially communicate with each other to form a second medium transverse channel extending in the first direction.

2. The S-wave corrugated heat exchanger sheet set according to claim 1, wherein the second plate piece is located above the first plate piece, a first medium channel extending in the second direction is formed between the second plate piece and the first plate piece, and the S-shaped convex waves abut the S-shaped concave waves to form a plurality of support points in rows and columns.

3. The S-wave corrugated heat exchanger sheet set according to claim 1, wherein the columns of S-shaped convex waves sequentially communicate with the columns of S-shaped concave waves in the second direction to form a second medium longitudinal channel extending in the second direction.

4. The S-wave corrugated heat exchanger sheet set according to claim 3, wherein the S-shaped convex waves in odd rows are misaligned with the S-shaped convex waves in even rows in the second direction; the S-shaped convex waves in odd rows are misaligned with the S-shaped convex waves in even rows in the second direction.

5. The S-wave corrugated heat exchanger sheet set according to claim 1, wherein the S-shaped convex waves in odd rows are aligned with the S-shaped convex waves in even rows in the second direction; the S-shaped convex waves in odd rows are aligned with the S-shaped convex waves in even rows in the second direction.

6. The S-shaped corrugated heat exchange plate piece set according to any one of claims 1 to 5, wherein, all of the S-shaped convex waves are arranged to have consistent wave shapes, and all of the S-shaped concave waves are arranged to have consistent wave shapes; or the S-shaped convex waves in odd rows are arranged to have wave shapes opposite to the S-shaped convex waves in even rows in the first direction.

7. A set of S-corrugated heat exchanger plates according to any one of claims 1 - 5, characterized in that the first plate piece and the second plate piece are of the same configuration and are reversely arranged with each other.

8. The S-wave corrugated heat exchanger sheet set according to claim 7, wherein the first plate piece has a first end edge and a second end edge in the first direction, the S-shaped convex waves include a first S-shaped convex wave close to the first end edge and a second S-shaped convex wave close to the second end edge, and the distance from the first S-shaped convex wave to the first end edge is different from the distance from the second S-shaped convex wave to the second end edge.

9. The S-wave corrugated heat exchanger sheet set according to claim 8, wherein the first S-shaped convex wave and the second S-shaped convex wave are non-S-shaped full waves.

10. A set of S-corrugated heat exchanger plates according to any one of claims 1 - 5, characterized in that The first plate piece is formed with a first step protruding upward from the first upper plate face at both ends in the first direction, and the second plate piece is formed with a second step protruding downward from the second lower plate face at both ends in the first direction, Wherein, the second medium port is communicated with the second medium transverse channel.

11. A set of S-corrugated heat exchanger plates according to any one of claims 1 - 5, characterized in that At least one of the S-shaped upper portion and the S-shaped lower portion of the S-shaped convex wave is communicated with the S-shaped upper portion and the S-shaped lower portion of the S-shaped concave wave. The size of the S-shaped upper portion of the S-shaped convex wave in the first direction is the same as the size of the S-shaped lower portion of the S-shaped convex wave, and the size of the S-shaped upper portion of the S-shaped concave wave in the first direction is the same as the size of the S-shaped lower portion of the S-shaped concave wave.

12. A set of S-corrugated heat exchanger plates according to any one of claims 1 - 5, characterized in that The first plate piece and the second plate piece are connected to form a plate piece pair, and the plate piece pairs are stacked up and down, and the first medium channel extending in the second direction is formed between adjacent plate piece pairs.

13. A plate heat exchanger, characterized by The S-shaped wave heat exchange plate piece group comprises a plurality of S-shaped wave heat exchange plate pieces according to any one of claims 1 to 12.

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