Corrugated sheet for plate heat exchanger and plate heat exchanger

Abstract

The application discloses a corrugated plate for a plate heat exchanger and the plate heat exchanger. The corrugated plate for the plate heat exchanger comprises a plate body provided with corrugated protrusions arranged in parallel and at intervals, and support portions arranged at intervals on the corrugated protrusions. In a direction parallel to the extension of the corrugated protrusions, the cross section of the support portion is substantially configured as a V shape, the opening direction of the cross section of the V shape is opposite to the opening direction of the corrugated protrusion where the support portion is located, and the depth of the cross section of the V shape is not greater than the depth of the corrugated protrusion. According to the corrugated plate for the plate heat exchanger, the rebound deformation of the corrugated plate for the plate heat exchanger during production and manufacturing can be effectively inhibited, the operation of assembling and welding the corrugated plate for the plate heat exchanger into the plate heat exchanger is facilitated, and the structural strength of the plate heat exchanger is facilitated to be enhanced. The arrangement of the support portion can change the flow channel of the fluid of the plate heat exchanger, improve the flow of the fluid, and further facilitate to improve the heat exchange performance of the plate heat exchanger.

Description

TECHNICAL FIELD

[0001] The present application relates to a corrugated plate for plate heat exchanger and a plate heat exchanger. BACKGROUND

[0002] Plate heat exchanger has the advantages of high heat transfer coefficient, good pressure and temperature resistance, low terminal heat exchange temperature difference, small overall equipment volume, light weight, not easy to scale, easy to clean, etc., and is widely used in petrochemical, food and pharmaceutical production, power plant waste heat recovery and other fields.

[0003] However, the existing plate heat exchanger plate is prone to deformation during manufacturing due to its structure, which may cause certain difficulties in assembling and welding the plate heat exchanger, and may adversely affect the structural strength and heat exchange performance of the plate heat exchanger.

[0004] Therefore, it is necessary to provide a corrugated plate for plate heat exchanger and a plate heat exchanger to at least partially solve the problems in the related art. SUMMARY

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

[0006] In order to at least partially solve the above problems, according to a first aspect of the present application, a corrugated plate for plate heat exchanger is provided, which comprises:

[0007] a plate body, wherein a plurality of corrugated protrusions are arranged in parallel and spaced apart on the plate body, and a support portion is arranged at intervals on the corrugated protrusion,

[0008] wherein, in a direction parallel to the extension of the corrugated protrusion, the cross section of the support portion is approximately V-shaped, the opening direction of the cross section of the V-shaped is opposite to the opening direction of the corrugated protrusion where the support portion is located, and the depth of the cross section of the V-shaped is not greater than the depth of the corrugated protrusion.

[0009] The corrugated sheet for plate heat exchanger according to the present application, the support part is arranged on the corrugated protrusion at intervals, the cross section of the support part is roughly configured as V type along the direction parallel to the extension of the corrugated protrusion, and the opening direction of the V type is opposite to the opening direction of the corrugated protrusion where the support part is located, which can effectively inhibit the rebound deformation of the corrugated sheet for plate heat exchanger during the production and manufacturing process, is beneficial to the operation of assembling and welding the corrugated sheet for plate heat exchanger into the plate heat exchanger, and is beneficial to enhancing the structural strength of the plate heat exchanger; the depth of the cross section of the V type is not greater than the depth of the corrugated protrusion, which can ensure the smooth flow of the fluid flow channel of the plate heat exchanger, so as to effectively ensure the heat exchange effect; and the arrangement of the support part can change the fluid flow channel of the plate heat exchanger, improve the flow of the fluid, and further improve the heat exchange performance of the plate heat exchanger.

[0010] Optionally, the support part is arranged at a position symmetrical to the center of the sheet body.

[0011] Optionally, the distance between the support parts arranged on the same corrugated protrusion is equal.

[0012] Optionally, the distance between the adjacent support parts arranged on different corrugated protrusions is equal.

[0013] Optionally, the support parts are uniformly and interval arranged on the sheet body.

[0014] Optionally, the support part is arranged at a position symmetrical to the center line in the length direction and the center line in the width direction of the sheet body.

[0015] Optionally, the support parts are uniformly and interval arranged in the region surrounded by the center line in the length direction and the center line in the width direction of the sheet body.

[0016] Optionally, the support parts are symmetrical to the center of the region surrounded by the center line in the length direction and the center line in the width direction of the sheet body.

[0017] According to a second aspect of the present application, a plate heat exchanger is provided, which comprises the above-mentioned corrugated sheet for plate heat exchanger.

[0018] According to the plate heat exchanger of the present application, the support part is arranged on the corrugated protrusion of the corrugated sheet for plate heat exchanger, the cross section of the support part is configured as V type along the direction parallel to the extension of the corrugated protrusion, and the opening direction of the V type is opposite to the opening direction of the corrugated protrusion where the support part is located, so that the rebound deformation of the corrugated sheet for plate heat exchanger during the production and manufacturing process can be effectively inhibited, the operation of assembling and welding the corrugated sheet for plate heat exchanger into the plate heat exchanger is facilitated, and the structural strength of the plate heat exchanger is facilitated to be enhanced; the depth of the V type cross section is not greater than the depth of the corrugated protrusion, so that the smooth flow of the fluid flow channel of the plate heat exchanger can be ensured, and the heat exchange effect is effectively ensured; and the arrangement of the support part can change the fluid flow channel of the plate heat exchanger, improve the flow of the fluid, and further facilitate to improve the heat exchange performance of the plate heat exchanger. BRIEF DESCRIPTION OF DRAWINGS

[0019] The following drawings of the embodiments of the present application are hereby incorporated as part of the present application for the purpose of understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application.

[0020] In the drawings:

[0021] Figure 1 It is a structure schematic view of the corrugated sheet for plate heat exchanger according to the first preferred embodiment of the present application;

[0022] Figure 2 It is a structure schematic view of the corrugated sheet for plate heat exchanger according to the second preferred embodiment of the present application;

[0023] Figure 3 It is a structure schematic view of the corrugated sheet for plate heat exchanger according to the third preferred embodiment of the present application;

[0024] Figure 4 It is a structure schematic view of the corrugated sheet for plate heat exchanger according to the fourth preferred embodiment of the present application; and

[0025] Figure 5 It is a structure schematic view of the corrugated sheet for plate heat exchanger according to the preferred embodiment of the present application along the direction perpendicular to the extension of the corrugated protrusion;

[0026] Figure 6 It is a structure schematic view of the corrugated sheet for plate heat exchanger according to the preferred embodiment of the present application along the direction parallel to the extension of the corrugated protrusion; and

[0027] Figure 7 It is another structure schematic view of the corrugated sheet for plate heat exchanger according to the preferred embodiment of the present application along the direction parallel to the extension of the corrugated protrusion.

[0028] Explanation of reference signs:

[0029] 100 / 200 / 300 / 400: corrugated sheet for plate heat exchanger

[0030] 110: sheet body

[0031] 111: corrugated protrusion

[0032] 111a: corrugated valley

[0033] 111b: corrugated crest

[0034] 112: support portion

[0035] 113: crest line

[0036] 114: valley line DETAILED DESCRIPTION

[0037] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail so as not to unnecessarily obscure the present application.

[0038] For a more complete understanding of the present application, reference is made to the following description taken in conjunction with the accompanying drawings in which:

[0039] 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 specific order. Also, for example, the term "first means" itself does not imply the existence of "second means", and the term "second means" itself does not imply the existence of "first means". The terms "upper", "lower", "front", "rear", "left", "right", and similar expressions used in the present application are for the purpose of clear illustration, not limitation.

[0040] Hereinafter, specific embodiments of the present application will be described in greater detail with reference to the accompanying drawings, which illustrate representative embodiments of the present application and are not intended to limit the present application.

[0041] Reference Figure 1, the corrugated sheet 100 for plate heat exchanger according to the first preferred embodiment of the present application comprises a sheet body 110. The sheet body 110 can be configured in a square structure. Alternatively, the sheet body 110 can be configured in a rectangular or circular structure according to actual needs. The sheet body 110 is provided with corrugated protrusions 111 arranged in parallel and at intervals. The cross section of the corrugated protrusion 111 is configured in a V shape in a direction B perpendicular to the corrugated protrusion 111, as shown in Figure 5 It can be understood that the cross section of the corrugated protrusion 111 can also be configured in other shapes, such as a circular shape, an elliptical shape or a polygonal shape, etc. in the direction B perpendicular to the corrugated protrusion 111. The corrugated protrusions 111 are continuously distributed in the direction B perpendicular to the corrugated protrusion 111, and the opening directions of adjacent corrugated protrusions 111 are opposite. That is, the cross sections of the continuously distributed corrugated protrusions 111 form a corrugated curve comprising a crest 111b and a trough 111a in the direction B perpendicular to the corrugated protrusion 111. The connecting line between the crests 111b constitutes a crest line 113, and the connecting line between the troughs 111a constitutes a trough line 114.

[0042] The corrugated protrusions 111 of the corrugated sheet 100 for plate heat exchanger are generally formed by pressing. In order to effectively suppress the rebound deformation of the corrugated sheet 100 for plate heat exchanger after the corrugated protrusions 111 are formed by pressing, and effectively ensure the shape of the corrugated sheet 100 for plate heat exchanger, support portions 112 are arranged at intervals on the corrugated protrusions 111, as shown in Figure 5 The cross section of the support portion 112 is configured in a V shape in a direction C parallel to the extension of the corrugated protrusion 111, and the opening direction of the V-shaped cross section is opposite to the opening direction of the corrugated protrusion 111 where the support portion 112 is located. The arrangement of the support portion 112 is conducive to the operation of assembling and welding the corrugated sheet 100 for plate heat exchanger into a plate heat exchanger, and is conducive to enhancing the structural strength of the plate heat exchanger. In addition, the support portion 112 can change the flow channel of the fluid of the plate heat exchanger, improve the flow of the fluid, and thus improve the heat exchange performance of the plate heat exchanger.

[0043] The support portion 112 can be arranged at a position where the trough 111a is located, as shown in Figure 5 and Figure 6 At this time, the support portion 112 protrudes in the direction of the crest line 113 in the direction C parallel to the extension of the corrugated protrusion 111.

[0044] The support portion 112 can also be arranged at a position where the crest 111b is located, as shown in Figure 7 At this time, the support portion 112 protrudes in the direction of the trough line 114 in the direction C parallel to the extension of the corrugated protrusion 111.

[0045] In order to ensure the flow passage between the adjacent corrugated plates 100, the depth of the V-shaped cross section of the support portion 112 in the direction C parallel to the extension of the corrugated protrusions 111 is not greater than the depth of the corrugated protrusions 111.

[0046] With reference to the drawings, the plate heat exchanger according to the first preferred embodiment of the present application will be described below. Figure 1 The extension direction C of the corrugated protrusions 111 of the corrugated plate 100 according to the first preferred embodiment of the present application is the same as the direction of the diagonal line OL of the plate body 110. It can be understood that the extension direction C of the corrugated protrusions 111 can also be arranged to be the same as the direction of the diagonal line OP of the plate body 110. The positions of the support portions 112 on the corrugated protrusions 111 are symmetrical with respect to the center O of the plate body 110.

[0047] In selecting the positions of the support portions 112, the center lines 11' and 22' of the adjacent corrugated protrusions 111 are first taken on both sides with the corrugated protrusion 111 in which the center O of the plate body 110 is located as the center; then the center lines 33' and 44' of the corrugated protrusions 111 which are spaced apart from the lines 11' and 22' by one corrugated protrusion 111 are taken; then a square E is taken on the lines 11', 22', 33' and 44' so that the center of the square E coincides with the center O of the plate body 110; then the support portions 112 are arranged at the four vertices of the square E; and finally the support portions 112 are arranged at the four vertices of the square E, so that the distances between the support portions 112 on the same corrugated protrusion 111 are equal, and the distances between the adjacent support portions 112 on different corrugated protrusions 111 are also equal.

[0048] The arrangement method can ensure that the positions of the support portions 112 are symmetrical with respect to the center O of the plate body 110, and that the positions of the support portions 112 are rotationally symmetrical with respect to the center O of the plate body 110 by 90°. In the process of assembling the plate heat exchanger from the corrugated plates 100 of this form, one of the two adjacent corrugated plates 100 is installed after being rotated by 90°, and the positions of the support portions 112 and the opening directions of the support portions 112 of the two adjacent corrugated plates 100 are the same. That is, when the extension directions of the corrugated protrusions 111 of the two adjacent corrugated plates 100 are perpendicular to each other, the positions of the support portions 112 and the opening directions of the support portions 112 of the two adjacent corrugated plates 100 are the same, which is conducive to the installation operation of the plate heat exchanger and can ensure the flow passage of the plate heat exchanger.

[0049] In addition, the arrangement method can ensure that most of the corrugated sheet 100 for plate heat exchangers forms uniformly spaced support portions 112, especially in the central region of the corrugated sheet 100 for plate heat exchangers, which is beneficial to effectively inhibit the springback deformation of the corrugated sheet 100 for plate heat exchangers during production and manufacturing.

[0050] Reference Figure 2 It shows a corrugated sheet 200 for plate heat exchangers according to the second preferred embodiment of the present application. The extension direction C of the corrugated protrusion 111 is the same as the direction of the diagonal line OP of the sheet body 110. It can be understood that the extension direction C of the corrugated protrusion 111 can also be arranged to be the same as the direction of the diagonal line OL of the sheet body 110. The arrangement positions of the support portions 112 on the corrugated protrusion 111 are symmetrical with respect to the center line NN' in the length direction and the center line MM' in the width direction of the sheet body 110.

[0051] When selecting the arrangement positions of the support portions 112, first establish the center line NN' in the length direction and the center line MM' in the width direction of the sheet body 110, which divide the sheet body into four regions V1, V2, V3 and V4. Take region V1 as the starting region, take the corrugated protrusion 111 where the center V of region V1 is located as the center, and use the same selection method as the arrangement positions of the support portions 112 of the corrugated sheet 100 for plate heat exchangers of the first preferred embodiment to first obtain a square F, so that the center of the square F coincides with the center V of region V1; then take the four vertices of the square F as the arrangement positions of the support portions 112, and respectively arrange the support portions 112; finally, based on the support portions 112 at the four vertices of the square F, respectively arrange the support portions 112 around region V1, so that the distances between the support portions 112 on the same corrugated protrusion 111 are equal, and the distances between the adjacent support portions 112 on different corrugated protrusions 111 are also equal.

[0052] After the support portions 112 are arranged in region V1, mirror project the arrangement positions of the support portions 112 in region V1 into regions V2 and V4 with the center line NN' in the length direction and the center line MM' in the width direction of the sheet body 110 as the axes of symmetry, and then project the arrangement positions of the support portions 112 in region V1 into region V3 by rotating 180° with respect to the center O of the sheet body 110, and finally arrange the support portions 112 at the arrangement positions of the support portions 112 in regions V2, V3 and V4, respectively.

[0053] Arranging the supports 112 on the corrugated protrusions 111 of the corrugated plate 200 for a plate heat exchanger using this arrangement ensures that within regions V1, V2, V3, and V4, the supports 112 are positioned symmetrically relative to the centers of regions V1, V2, V3, and V4. Furthermore, the supports 112 are rotationally symmetrical about the centers of regions V1, V2, V3, and V4. With respect to the plate body 110, the supports 112 are positioned symmetrically relative to both the longitudinal centerline NN' and the width centerline MM' of the plate body 110.

[0054] When assembling this type of corrugated plate heat exchanger 200 to form a plate heat exchanger, one of two adjacent corrugated plate heat exchanger plates 200 is rotated 180° before installation. The positions of the support portions 112 of the two adjacent corrugated plate heat exchanger plates 200 and the opening directions of the support portions 112 are identical. In other words, when the two adjacent corrugated plate heat exchanger plates 200 are installed with their corrugated protrusions 111 extending perpendicularly to each other, the positions of the support portions 112 of the two adjacent corrugated plate heat exchanger plates 200 and the opening directions of the support portions 112 are identical, thus ensuring smooth flow in the flow channels of the plate heat exchanger.

[0055] In addition, arranging the support portions 112 on the corrugated protrusions 111 of the corrugated plate 200 for a plate heat exchanger according to this arrangement method can ensure that evenly spaced support portions 112 are formed in most areas within regions V1, V2, V3 and V4 of the corrugated plate 200 for a plate heat exchanger, especially in the central areas of regions V1, V2, V3 and V4. This is beneficial to effectively suppress rebound deformation of the corrugated plate 200 for a plate heat exchanger during the production process.

[0056] refer to Figure 3 , which shows a corrugated plate 300 for a plate heat exchanger according to a third preferred embodiment of the present invention. The direction C in which the corrugated protrusions 111 extend forms an angle A with the diagonal line OL of the plate body 110. Angle A is preferably set in the range of 14° to 22°, such as 18°. It is understood that the direction in which the corrugated protrusions 111 extend may also form an angle with the diagonal line OP of the plate body 110. The angle is preferably set in the range of 14° to 22°, such as 18°. The support portions 112 on the corrugated protrusions 111 are positioned symmetrically with respect to the center O of the plate body 110.

[0057] In selecting the setting position of the support portion 112, the center line 55' and 66' of the corrugated protrusions 111 adjacent to both sides of the corrugated protrusion 111 where the center O of the plate body 110 is located are first selected as the center; then the center line 77' and 88' of the corrugated protrusions 111 spaced apart from the lines 55' and 66' by one corrugated protrusion 111 are selected respectively; then a square G is selected on the lines 55', 66', 77' and 88' so that the center of the square G coincides with the center O of the plate body 110 and the four sides of the square G are parallel to the boundary of the plate body 110; then the four vertices of the square G are used as the setting position of the support portion 112, and the support portion 112 is arranged respectively; finally, the support portion 112 at the four vertices of the square G is used as the basis, and the support portion 112 is arranged around the plate body 110 respectively, so that the support portion 112 is uniformly and spaced apart on the plate body 110.

[0058] According to the arrangement method, the support portion 112 is arranged on the corrugated protrusion 111 of the corrugated plate 300 for plate heat exchanger, which can ensure that the setting position of the support portion 112 is symmetrical relative to the center O of the plate body 110, and can ensure that the setting position of the support portion 112 is 90° rotationally symmetrical relative to the center O of the plate body 110. In the process of assembling the corrugated plate 300 for plate heat exchanger into a plate heat exchanger, one of the two adjacent corrugated plates 300 for plate heat exchanger is installed after being rotated by 90°, and the positions of the support portions 112 and the opening directions of the support portions 112 of the two adjacent corrugated plates 300 for plate heat exchanger are the same. That is, when the two adjacent corrugated plates 300 for plate heat exchanger are installed with the extension directions of the corrugated protrusions 111 perpendicular to each other, the positions of the support portions 112 and the opening directions of the support portions 112 of the two adjacent corrugated plates 300 for plate heat exchanger are the same, which is beneficial to the installation operation of the plate heat exchanger and can ensure the flow of the flow passage of the plate heat exchanger.

[0059] In addition, according to the arrangement method, the support portion 112 is arranged on the corrugated protrusion 111 of the corrugated plate 300 for plate heat exchanger, which can ensure that the support portion 112 is uniformly and spaced apart on the corrugated plate 300 for plate heat exchanger, which is beneficial to effectively inhibit the rebound deformation of the corrugated plate 300 for plate heat exchanger in the process of production and manufacturing.

[0060] Reference Figure 4The corrugated plate 400 for plate heat exchangers according to the fourth preferred embodiment of the present application is shown in FIG. 4. The direction C in which the corrugated protrusions 111 extend forms an angle A' with the diagonal OL of the plate body 110, and the angle A' is preferably set to a range of 14° to 22°, for example, 18°. It is to be understood that the direction in which the corrugated protrusions 111 extend can also form an angle with the diagonal OP of the plate body 110, and the angle is preferably set to a range of 14° to 22°, for example, 18°. The support portions 112 provided on the corrugated protrusions 111 are symmetrically arranged with respect to the center line NN' in the length direction and the center line MM' in the width direction of the plate body 110.

[0061] In selecting the arrangement positions of the support portions 112, the center line 99' of the corrugated protrusion 111 in which the center O of the plate body 110 is located is first taken, and then the center lines XX' and YY' of the corrugated protrusions 111 which are spaced apart from the line 99' by two corrugated protrusions 111 are taken on both sides with the corrugated protrusion 111 in which the center O of the plate body 110 is located as the center. A rectangle H is taken on the lines 99', XX' and YY' such that the center of the rectangle H coincides with the center O of the plate body 110 and the four sides of the rectangle H are parallel to the boundaries of the plate body 110. Then, the support portions 112 are arranged at the four vertices of the rectangle H, respectively. Finally, the support portions 112 at the four vertices of the rectangle H are taken as the basis, and the support portions 112 are arranged around the plate body 110, respectively.

[0062] The support portions 112 are arranged on the corrugated protrusions 111 of the corrugated plate 400 for plate heat exchangers according to the arrangement method, so that the support portions 112 are uniformly spaced apart in the regions W1, W2, W3 and W4, which is advantageous for effectively suppressing the springback deformation of the corrugated plate 400 for plate heat exchangers during the production and manufacturing process.

[0063] In the process of assembling the corrugated plate 400 for plate heat exchangers of this form to form a plate heat exchanger, one of the two adjacent corrugated plates 400 for plate heat exchangers is installed after being rotated by 180°, and the positions of the support portions 112 and the opening directions of the support portions 112 of the two adjacent corrugated plates 400 for plate heat exchangers are the same. That is, when the two adjacent corrugated plates 400 for plate heat exchangers are installed with the extension directions of the corrugated protrusions 111 perpendicular to each other, the positions of the support portions 112 and the opening directions of the support portions 112 of the two adjacent corrugated plates 400 for plate heat exchangers are the same, which can ensure the flow of the flow passage of the plate heat exchanger.

[0064] Unless otherwise defined, all 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. 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. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used herein, the term "about" when used in connection with a number or a numerical range, means that the number or numerical range recited is intended to be interpreted as approximately that number or numerical range, and are meant to comprise numbers that are close to the recited number or numerical range. As used herein, the term "consisting essentially of" means that the composition or process recited is comprised of the specified elements, and that the composition or process can also include additional elements that do not materially affect the basic and novel characteristics of the composition or process. As used herein, the term "consisting of means that the composition or process recited is comprised of the specified elements, and that the composition or process can not include additional elements.

[0065] While the application has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the application is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements.

Claims

1. A corrugated plate for a plate heat exchanger, characterized in that: The corrugated plate for plate heat exchanger comprises: The plate body is provided with parallel and spaced corrugated protrusions, and the corrugated protrusions are spaced apart and provided with support parts. Wherein, along the direction parallel to the extension of the corrugated protrusion, the cross-section of the support portion is roughly configured as a V-shape, the opening direction of the V-shaped cross-section is opposite to the opening direction of the corrugated protrusion where the support portion is located, and the depth of the V-shaped cross-section is not greater than the depth of the corrugated protrusion. Wherein, the support portion is configured as: Taking the corrugated protrusion where the center of the plate body is located as the center, take the center lines of adjacent corrugated protrusions on both sides as the first center line and the second center line, and then take the center lines of the corrugated protrusions separated from the first center line and the second center line by one corrugated protrusion as the third center line and the fourth center line respectively, and take a first square on the first center line, the second center line, the third center line and the fourth center line, so that the center of the first square coincides with the center of the plate body, and the support parts are arranged at the four vertices of the first square. Based on the support parts at the four vertices of the first square, the support parts are respectively arranged around the plate body, so that the distance between the support parts arranged on the same corrugated protrusion is equal, and the distance between adjacent support parts arranged on different corrugated protrusions is equal. Wherein, the support portion is arranged at a position symmetrical with respect to the center of the plate body.

2. The corrugated plate for plate heat exchanger according to claim 1, characterized in that: The extending direction of the corrugated protrusion forms an angle with the diagonal line of the plate body.

3. The corrugated plate for plate heat exchanger according to claim 2, characterized in that: The four sides of the first square are respectively parallel to the boundaries of the plate body.

4. The corrugated plate for plate heat exchanger according to claim 1, characterized in that: The support portions are evenly spaced apart on the plate body.

5. A corrugated plate for a plate heat exchanger, characterized in that: The corrugated plate for plate heat exchanger comprises: The plate body is provided with parallel and spaced corrugated protrusions, and the corrugated protrusions are spaced apart and provided with support parts. Wherein, along the direction parallel to the extension of the corrugated protrusion, the cross-section of the support portion is roughly configured as a V-shape, the opening direction of the V-shaped cross-section is opposite to the opening direction of the corrugated protrusion where the support portion is located, and the depth of the V-shaped cross-section is not greater than the depth of the corrugated protrusion. Wherein, the support portion is configured as: The center line of the length direction of the plate body is taken as the length center line, and the center line of the width direction of the plate body is taken as the width center line. The length center line and the width center line divide the plate body into a first area, a second area, a third area and a fourth area. In the first area, the corrugated protrusion where the center of the first area is located is taken as the center, and the center lines of the adjacent corrugated protrusions on both sides are taken as the fifth center line and the sixth center line, and then the center lines of the corrugated protrusions separated from the fifth center line and the sixth center line by one corrugated protrusion are taken as the seventh center line and the eighth center line respectively. A second square is taken on the fifth center line, the sixth center line, the seventh center line and the eighth center line, so that the center of the second square coincides with the center of the first area. The support portion is set At the four vertices of the second square, based on the support parts at the four vertices of the second square, the support parts are respectively arranged around the first area, so that the distances between the support parts arranged on the same corrugated protrusion are equal, and the distances between adjacent support parts arranged on different corrugated protrusions are equal, and with the length center line and the width center line as the symmetry axis, the setting positions of the support parts in the first area are mirror-projected into the second area and the fourth area, and the setting positions of the support parts in the first area are rotated 180° relative to the center of the plate body and projected into the third area, and then the support parts are respectively arranged at the setting positions of the support parts in the second area, the third area, and the fourth area. Wherein, in the first area, the support portion is arranged at a position symmetrical with respect to the center of the first area.

6. The corrugated plate for plate heat exchanger according to claim 5, characterized in that: The support portion is disposed at a position symmetrical with respect to a center line in a length direction and a center line in a width direction of the plate body.

7. The corrugated plate for plate heat exchanger according to claim 5, characterized in that: In the first area, the support portions are evenly distributed.

8. A plate heat exchanger, characterized in that: The plate heat exchanger includes the corrugated plate for a plate heat exchanger according to any one of claims 1 to 7.

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