CN112747613B - Heat exchange plate for plate heat exchanger and plate heat exchanger - Google Patents

Heat exchange plate for plate heat exchanger and plate heat exchanger Download PDF

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Publication number
CN112747613B
CN112747613B CN201911189175.0A CN201911189175A CN112747613B CN 112747613 B CN112747613 B CN 112747613B CN 201911189175 A CN201911189175 A CN 201911189175A CN 112747613 B CN112747613 B CN 112747613B
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China
Prior art keywords
annular
heat exchanger
plate
annular portion
portions
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CN201911189175.0A
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Chinese (zh)
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CN112747613A (en
Inventor
张志锋
罗俊
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Danfoss AS
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Danfoss AS
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Priority to EP20880738.8A priority Critical patent/EP4053488A4/en
Priority to PCT/CN2020/124321 priority patent/WO2021083189A1/en
Priority to US17/773,118 priority patent/US20230147560A1/en
Priority to MX2022005030A priority patent/MX2022005030A/en
Publication of CN112747613A publication Critical patent/CN112747613A/en
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Publication of CN112747613B publication Critical patent/CN112747613B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/086—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning having one or more openings therein forming tubular heat-exchange passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0282—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry of conduit ends, e.g. by using inserts or attachments for modifying the pattern of flow at the conduit inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Abstract

The embodiment of the invention discloses a heat exchange plate for a plate heat exchanger and the plate heat exchanger with the heat exchange plate. The heat exchange plate includes: a heat exchange portion through which fluids of different temperatures exchange heat with each other, and a port portion in which an opening for a port as a heat exchanger is formed. The heat exchange plate has a first side and a second side in a direction perpendicular to the heat exchange plate, the port portion has a contact portion at the first side that contacts with a port portion of another heat exchange plate, and a projection protruding toward the second side with respect to the contact portion. The heat exchanger plate and the plate heat exchanger according to embodiments of the invention may for example improve the quality of the port portion of the heat exchanger plate of the heat exchanger.

Description

Heat exchange plate for plate heat exchanger and plate heat exchanger
Technical Field
Embodiments of the present invention relate to a heat exchanger plate for a plate heat exchanger and a plate heat exchanger.
Background
The plate heat exchanger comprises a cover plate, a heat exchange plate, connecting pipes and the like.
Disclosure of Invention
It is an object of embodiments of the present invention to provide a heat exchanger plate for a plate heat exchanger and a plate heat exchanger having the heat exchanger plate, whereby for example the quality of the port portion of the heat exchanger plate of the heat exchanger may be improved.
According to an embodiment of the present invention, there is provided a heat exchanger plate for a plate heat exchanger, comprising: a heat exchange portion through which fluids of different temperatures exchange heat with each other, and a port portion in which an opening for functioning as a port of a heat exchanger is formed, wherein the heat exchange plate has a first side and a second side in a direction perpendicular to the heat exchange plate, the port portion has a contact portion at the first side that contacts with a port portion of another heat exchange plate, and a protrusion protruding toward the second side with respect to the contact portion.
According to an embodiment of the invention, the port portion comprises a plurality of protrusions distributed in a circumferential direction around the opening.
According to an embodiment of the present invention, the plurality of protrusions have a circular, rectangular or trapezoidal shape when viewed in a direction perpendicular to the heat exchange plate.
According to an embodiment of the invention, the port portion comprises an annular contact portion surrounding the opening and an annular projection, the annular contact portion and the annular projection being contiguous.
According to an embodiment of the invention, the port portion comprises at least two annular projections surrounding the opening, two of the at least two annular projections being contiguous and having different projection amounts relative to the contact portion; or two of the at least two annular projections are separated by an annular contact portion.
According to an embodiment of the invention, the port portion comprises: a first annular portion surrounding the opening, an inner edge of the first annular portion constituting an edge of the opening; and a second annular portion surrounding and adjoining the first annular portion, at least a portion of one of the first annular portion and the second annular portion constituting the projection.
According to an embodiment of the present invention, a plurality of portions of at least one of the first annular portion and the second annular portion, which are spaced apart in the circumferential direction, constitute a plurality of projections; or one of the first annular portion and the second annular portion constitutes an annular projection; or one of the first annular portion and the second annular portion constitutes an annular protrusion, and a plurality of portions of the other of the first annular portion and the second annular portion, which are spaced apart in the circumferential direction, constitute a plurality of protrusions.
According to an embodiment of the invention, the port portion comprises: a first annular portion surrounding the opening, an inner edge of the first annular portion constituting an edge of the opening; a second annular portion surrounding and contiguous with the first annular portion; and a third annular portion surrounding and adjoining the second annular portion, at least a portion of at least one of the first annular portion, the second annular portion, and the third annular portion constituting a protrusion.
According to an embodiment of the present invention, the second annular portion and the third annular portion protrude toward the second side with respect to the portion of the surface of the port portion to constitute a protrusion, at least a portion of the first annular portion constitutes a contact portion, and an amount of protrusion of the second annular portion with respect to the contact portion is smaller than an amount of protrusion of the third annular portion.
According to an embodiment of the present invention, one of the first annular portion, the second annular portion, and the third annular portion constitutes an annular protrusion, and a plurality of portions of the other of the first annular portion, the second annular portion, and the third annular portion, which are spaced apart in the circumferential direction, constitute a plurality of protrusions.
According to an embodiment of the invention, the port portion comprises: a plurality of annular portions surrounding the opening, an inner edge of an innermost annular portion constituting an edge of the opening, and adjacent two annular portions of the plurality of annular portions being adjacent to each other, at least a portion of at least one of the plurality of annular portions constituting the projection.
According to an embodiment of the invention, at least one of the plurality of annular portions protrudes towards the second side with respect to the portion of the surface of the port portion to constitute an annular protrusion; or a plurality of portions of at least one of the plurality of annular portions spaced apart in the circumferential direction protrude toward the second side with respect to the portion of the surface of the port portion to constitute a plurality of projections.
According to an embodiment of the present invention, there is also provided a plate heat exchanger including: the heat exchange plates are the heat exchange plates.
According to an embodiment of the present invention, the protrusions of two adjacent heat exchange plates, which are sealingly connected to each other at the port portions, protrude in a direction away from each other, and a gap between the two protrusions is in the range of 0.2-0.3 mm.
According to an embodiment of the present invention, the protrusions of two adjacent heat exchange plates, which are sealingly connected to each other at the port portions, protrude in a direction away from each other, a gap between the two protrusions is in the range of 0.2-0.3 mm, and the gap between the two protrusions is filled with solder of the welded plate heat exchanger to weld the two protrusions together.
The heat exchanger plate and the plate heat exchanger according to embodiments of the invention may for example improve the quality of the port portion of the heat exchanger plate of the heat exchanger.
Drawings
Fig. 1 is a schematic perspective view of a plate heat exchanger according to an embodiment of the invention;
fig. 2 is a schematic partial top view of a plate heat exchanger according to an embodiment of the invention;
FIG. 3 is a schematic partial cross-sectional view of a plate heat exchanger according to an embodiment of the invention along line AA in FIG. 2;
fig. 4 is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a first embodiment of the invention, taken along line AA in fig. 2;
fig. 5 is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a second embodiment of the invention, taken along line AA in fig. 2;
fig. 6 is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a third embodiment of the invention, taken along line AA in fig. 2;
fig. 7 is a schematic partial top view of a heat exchanger plate of a plate heat exchanger according to a fourth embodiment of the invention;
fig. 8A is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a fifth embodiment of the invention, along a plane through the axis of the port shown in fig. 2;
fig. 8B is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a fifth embodiment of the invention, in another plane through the axis of the port shown in fig. 2;
fig. 9A is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a sixth embodiment of the invention, taken along a plane passing through the axis of the port shown in fig. 2;
fig. 9B is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a sixth embodiment of the invention, in another plane through the axis of the port shown in fig. 2;
fig. 10A is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a seventh embodiment of the invention, along a plane through the axis of the port shown in fig. 2;
fig. 10B is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a seventh embodiment of the invention, in another plane through the axis of the port shown in fig. 2;
fig. 11A is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to an eighth embodiment of the invention, in one plane through the axis of the port shown in fig. 2;
fig. 11B is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to an eighth embodiment of the invention, in another plane through the axis of the port shown in fig. 2;
fig. 12A is a schematic partial top view of a plate heat exchanger according to a ninth embodiment of the invention; and
fig. 12B is a schematic partial cross-sectional view of a heat exchanger plate of a plate heat exchanger according to a ninth embodiment of the invention, taken along the line BB shown in fig. 12A.
Detailed Description
The invention is further described with reference to the drawings and detailed description.
As shown in fig. 1 to 3, a plate heat exchanger 100 according to an embodiment of the present invention includes: a plurality of heat exchange plates 10; heat exchange spaces 20 formed between adjacent heat exchange plates 10 among the plurality of heat exchange plates 10; and ports 30 formed in the heat exchange plate 10, each port 30 for distributing refrigerant to some of the plurality of heat exchange spaces 20.
Referring to fig. 1 to 12B, a heat exchange plate 10 for a plate heat exchanger 100 according to an embodiment of the present invention includes: a heat exchange portion 11H and a port portion 11P; and an opening 12 formed in the port portion 11P for forming the port 30 of the heat exchanger 100. The heat exchanging portion 11H is provided with a concave-convex structure so that fluids of different temperatures exchange heat with each other at both sides of the heat exchanging portion 11H. The port portions 11P are substantially fitted together. The heat exchanger plate 10 has a first side and a second side in a direction perpendicular to the heat exchanger plate 10 (e.g. upper and lower sides of the heat exchanger plate 10 in fig. 3, 4, 5, 6, 8A, 8B, 9A, 9B, 10A, 10B, 11A, 11B, 12B), the port portion 11P has a contact portion 16 at the first side in contact with the port portion 11P of the other heat exchanger plate 10, and a protrusion 15 protruding towards the second side with respect to the contact portion 16. For example, the port portion 11P has a surface PS on the first side, and a portion of the surface PS of the port portion 11P is in contact with the port portion 11P of the other heat exchange plate 10.
In some embodiments of the present invention, referring to fig. 7, 8A, 8B, 9A, 9B, 10A, 10B, 12A, 12B, the port portion 11P includes a plurality of protrusions 15 distributed in a circumferential direction around the opening 12. For example, referring to fig. 7, 12A, the plurality of protrusions 15 have a circular, rectangular or trapezoidal shape when viewed in a direction perpendicular to the heat exchange plate 10.
In some embodiments of the present invention, referring to fig. 3, 4, 5, 6, 8A, 8B, 10A, 10B, 11A, 11B, the port portion 11P includes an annular contact portion 16 surrounding the opening 12 and an annular protrusion 15, the annular contact portion 16 and the annular protrusion 15 being contiguous. For example, referring to fig. 5, the port portion 11P includes at least two annular projections 15 surrounding the opening 12, two annular projections 15 of the at least two annular projections 15 being contiguous and having different projection amounts with respect to the contact portion 16; or two annular projections 15 of the at least two annular projections 15 are separated by an annular contact portion 16.
In some embodiments of the present invention, referring to fig. 3 to 12B, the port portion 11P includes: a first annular portion P1 surrounding said opening 12, an inner edge P10 of the first annular portion P1 constituting an edge 120 of said opening 12; and a second annular portion P2 surrounding the first annular portion P1 and adjoining the first annular portion P1, at least a portion of at least one of the first annular portion P1 and the second annular portion P2 (for example, one of the first annular portion P1 and the second annular portion P2) protruding toward the second side to constitute a protrusion 15. For example, one of the first and second annular portions P1 and P2 protrudes toward the second side to constitute a protrusion 15.
Each of the first and second annular portions P1 and P2 has a predetermined width. And may have a circular shape, or other suitable shape, depending on the shape of the opening 12.
In some embodiments of the present invention, referring to fig. 7, 8A, 8B, 9A, 9B, 10A, 10B, 12A, 12B, a plurality of portions of at least one of the first and second annular portions P1, P2 (e.g., one of the first and second annular portions P1, P2) spaced apart in a circumferential direction protrude toward the second side to constitute a plurality of protrusions 15. A plurality of stepped reinforcing structures are uniformly arranged along the circumferential direction of the annular portion around the opening 12 of the heat exchange plate 10, for example, referring to fig. 7, no protrusions 15 are provided in the region a, and protrusions 15 are provided in the region B, which may be modified accordingly depending on the size of the opening and the size of the heat exchange portion.
In some embodiments of the invention, see fig. 3, 4, 5, 6, 8A, 8B, 10A, 10B, 11A, 11B, the first annular portion P1 protrudes towards the second side to form an annular protrusion 15; or the second annular portion P2 protrudes toward the second side to constitute an annular projection 15.
In some embodiments of the present invention, referring to fig. 7, 8A, 8B, one of the first and second annular portions P1, P2 protrudes toward the second side to constitute an annular protrusion 15, and a plurality of portions of the other of the first and second annular portions P1, P2, which are spaced apart in the circumferential direction, protrude toward the second side to constitute a plurality of protrusions 15.
In some embodiments of the present invention, referring to fig. 5, 10A, 10B, 11A, 11B, 12A, 12B, the port portion 11P includes: a first annular portion P1 surrounding said opening 12, an inner edge P10 of the first annular portion P1 constituting an edge 120 of said opening 12; a second annular portion P2 surrounding the first annular portion P1 and adjoining the first annular portion P1; and a third annular portion P3 surrounding the second annular portion P2 and adjoining the second annular portion P2, at least a part of at least one of the first annular portion P1, the second annular portion P2, and the third annular portion P3 protruding toward the second side to constitute a protrusion 15.
In some embodiments of the present invention, referring to fig. 5, the second and third annular portions P2 and P3 protrude toward the second side to constitute a protrusion 15, at least a portion of the first annular portion P1 constitutes a contact portion 16, and an amount of protrusion of the second annular portion P2 with respect to the contact portion 16 is smaller than an amount of protrusion of the third annular portion P3.
In some embodiments of the present invention, referring to fig. 10A, 10B, 11A, 11B, one of the first, second, and third annular portions P1, P2, and P3 protrudes toward the second side to constitute an annular protrusion 15, and a plurality of portions of the other of the first, second, and third annular portions P1, P2, and P3, which are spaced apart in the circumferential direction, protrude toward the second side to constitute a plurality of protrusions 15.
In some embodiments of the present invention, referring to fig. 10A, 10B, 11A, 11B, one of the first and second annular portions P1, P2 protrudes toward the second side to constitute an annular protrusion 15, and a plurality of portions of the third annular portion P3 spaced apart in the circumferential direction protrude toward the second side to constitute a plurality of protrusions 15.
In some embodiments of the present invention, referring to fig. 7, 8A, 8B, 9A, 9B, 10A, 10B, 12A, 12B, the plurality of protrusions 15 are arranged at equal intervals in the circumferential direction.
In some embodiments of the present invention, referring to fig. 7, 12A, the plurality of protrusions 15 have a circular, rectangular or trapezoidal shape when viewed in a direction perpendicular to the heat exchange plate 10.
In some embodiments of the present invention, referring to fig. 3 to 12B, the port portion 11P includes: the plurality of annular portions surrounding the opening 12, the inner edge P10 of the innermost annular portion constituting the edge 120 of the opening 12, and adjacent two of the plurality of annular portions being adjacent to each other, at least a portion of at least one of the plurality of annular portions protruding toward the second side to constitute the projection 15.
In some embodiments of the invention, referring to fig. 3-12B, at least one of the plurality of annular portions protrudes toward the second side to form an annular protrusion 15; or a plurality of portions of at least one of the plurality of annular portions, which are spaced apart in the circumferential direction, protrude toward the second side to constitute a plurality of projections 15.
In some embodiments of the present invention, referring to fig. 5, 10A, 10B, 11A, 11B, 12A, 12B, the port portion 11P includes: the inner edge P10 of the innermost annular part constitutes the edge 120 of the opening 12 around at least three annular parts of the opening 12, and adjacent two of the at least three annular parts abut each other, at least a part of each of the at least two of the at least three annular parts protruding towards the second side to constitute the protrusion 15.
In some embodiments of the invention, referring to fig. 5, 10A, 10B, 11A, 11B, 12A, 12B, the protrusion amount of at least a portion of one of the at least two annular portions is different from the protrusion amount of at least a portion of the other of the at least two annular portions; or the protrusion amount of at least a part of one of the at least two annular portions is the same as the protrusion amount of at least a part of the other of the at least two annular portions.
In some embodiments of the invention, referring to fig. 5, 10A, 10B, 11A, 11B, 12A, 12B, each of at least two of the at least three annular portions protrudes towards the second side to form an annular protrusion 15; a plurality of portions of each of at least two of the at least three annular portions, which are spaced apart in the circumferential direction, protrude toward the second side to constitute a plurality of projections 15; or a plurality of portions of one of at least two of the at least three annular portions, which are spaced apart in the circumferential direction, protrude toward the second side to constitute a plurality of projections 15, and another of the at least two of the at least three annular portions protrudes toward the second side to constitute an annular projection 15.
In some embodiments of the present invention, referring to fig. 3, 4, 5, 6, 8A, 8B, 9A, 9B, 10A, 10B, 11A, 11B, 12B, the protrusions 15 of two adjacent heat exchange plates 10, which are sealingly connected to each other at the port portion 11P, protrude in a direction away from each other, and a gap between the two protrusions 15 is in the range of 0.2-0.3 mm.
In some embodiments of the present invention, referring to fig. 3, 4, 5, 6, 8A, 8B, 9A, 9B, 10A, 10B, 11A, 11B, 12B, the protrusions 15 of two adjacent heat exchange plates 10, which are sealingly connected to each other at the port portion 11P, protrude toward a direction away from each other, a gap between the two protrusions 15 is in the range of 0.2-0.3 mm, and the gap between the two protrusions 15 is filled with solder of the welded plate heat exchanger to weld the two protrusions 15 together. Thereby, for example, the reinforcing effect of the protrusion 15 on the port portion 11P can be further improved.
In some embodiments of the invention, the heat exchanger plate 10 is formed from a plate, for example by stamping. After the heat exchanger plate 10 is formed, the plate has undeformed portions which are not deformed towards the first side and the second side, the undeformed portions being in an initial plane, i.e. an undeformed plane in which the plate is located before being processed (e.g. punched). The projection 15 projects from the initial plane towards said second side, at least one of the plurality of annular portions not forming a projection, i.e. being located in the initial plane.
According to the embodiment of the present invention, referring to fig. 3 to 12B, the height, the external dimensions, etc. of the protrusions 15 may be adjusted accordingly according to the size of the corrugated structure of the heat exchange area, and at the same time, the number of the plurality of protrusions 15 around each opening may be adjusted accordingly. The height of the protrusions is smaller than the height of the peaks of the wave-like structure.
According to the embodiment of the invention, when the port size of the heat exchange plate is larger, and when the number of the stacked heat exchange plates is larger, the risk of warping of the heat exchange plates can be obviously reduced, the qualification rate of products can be improved, and the flatness near the opening for forming the port after the heat exchange plates are formed can be improved.
According to the embodiment of the invention, the flatness of the heat exchange plate can be improved by providing a stepped structure in the vicinity of the opening of the heat exchange plate, that is, by providing the entire original plane as two or more planes of unequal height. Meanwhile, for the molded heat exchange plate, the structure can obviously enhance the strength near the opening and prevent the warpage.
According to the embodiment of the invention, the possible warp deformation when the number of the stacked heat exchange plates is large or the openings of the heat exchange plates are large is eliminated, the flatness near the openings of the heat exchange plates is improved, the brazing quality among the heat exchange plates is improved, and finally the overall structural strength of the heat exchanger is improved. In addition, the qualification rate of the product is improved.
It should be noted that features of one or more of the above-described embodiments may be combined into new embodiments. Features of one embodiment may be used in another embodiment unless features of one embodiment conflict with solutions of another embodiment.

Claims (15)

1. A heat exchanger plate for a plate heat exchanger, comprising:
a heat exchange portion through which fluids of different temperatures exchange heat with each other, and a port portion in which an opening for functioning as a port of the heat exchanger is formed,
wherein the heat exchange plate has a first side and a second side in a direction perpendicular to the heat exchange plate, the port portion has a contact portion at the first side that contacts a port portion of another heat exchange plate, and a protrusion protruding toward the second side with respect to the contact portion to form a stepped structure such that the port portion includes portions in two or more planes of unequal height.
2. The heat exchanger plate for a plate heat exchanger according to claim 1, wherein:
the port portion includes a plurality of protrusions distributed in a circumferential direction around the opening.
3. The heat exchanger plate for a plate heat exchanger according to claim 2, wherein:
the plurality of protrusions have a circular, rectangular or trapezoidal shape when viewed in a direction perpendicular to the heat exchange plate.
4. The heat exchanger plate for a plate heat exchanger according to claim 1, wherein:
the port portion includes an annular contact portion surrounding the opening and an annular projection, the annular contact portion and the annular projection being contiguous.
5. The heat exchanger plate for a plate heat exchanger of claim 4 wherein:
the port portion includes at least two annular projections surrounding the opening, two of the at least two annular projections being contiguous and having different amounts of projection relative to the contact portion; or two of the at least two annular projections are separated by an annular contact portion.
6. The heat exchanger plate for a plate heat exchanger according to claim 1, wherein:
the port portion includes: a first annular portion surrounding the opening, an inner edge of the first annular portion constituting an edge of the opening; and a second annular portion surrounding and adjoining the first annular portion, at least a portion of one of the first annular portion and the second annular portion constituting the projection.
7. The heat exchange plate for a plate heat exchanger according to claim 6, wherein:
a plurality of portions of at least one of the first annular portion and the second annular portion that are spaced apart in a circumferential direction constitute a plurality of projections; or alternatively
One of the first annular portion and the second annular portion constitutes an annular projection; or alternatively
One of the first annular portion and the second annular portion constitutes an annular protrusion, and a plurality of portions of the other of the first annular portion and the second annular portion, which are spaced apart in the circumferential direction, constitute a plurality of protrusions.
8. The heat exchanger plate for a plate heat exchanger according to claim 1, wherein:
the port portion includes: a first annular portion surrounding the opening, an inner edge of the first annular portion constituting an edge of the opening; a second annular portion surrounding and contiguous with the first annular portion; and a third annular portion surrounding and adjoining the second annular portion, at least a portion of at least one of the first annular portion, the second annular portion, and the third annular portion constituting a protrusion.
9. The heat exchange plate for a plate heat exchanger according to claim 8, wherein:
the second annular portion and the third annular portion protrude toward the second side to constitute a protrusion, at least a portion of the first annular portion constitutes a contact portion, and an amount of protrusion of the second annular portion with respect to the contact portion is smaller than an amount of protrusion of the third annular portion.
10. The heat exchange plate for a plate heat exchanger according to claim 8, wherein:
one of the first annular portion, the second annular portion, and the third annular portion constitutes an annular protrusion, and a plurality of portions of the other of the first annular portion, the second annular portion, and the third annular portion, which are spaced apart in the circumferential direction, constitute a plurality of protrusions.
11. The heat exchanger plate for a plate heat exchanger according to claim 1, wherein:
the port portion includes: a plurality of annular portions surrounding the opening, an inner edge of an innermost annular portion constituting an edge of the opening, and adjacent two annular portions of the plurality of annular portions being adjacent to each other, at least a portion of at least one of the plurality of annular portions constituting the projection.
12. The heat exchanger plate for a plate heat exchanger of claim 11, wherein:
at least one of the plurality of annular portions protrudes toward the second side to constitute an annular protrusion; or alternatively
A plurality of portions of at least one of the plurality of annular portions, which are spaced apart in the circumferential direction, protrude toward the second side to constitute a plurality of projections.
13. A plate heat exchanger comprising:
a plurality of heat exchanger plates, which are heat exchanger plates according to any one of claims 1 to 12.
14. The plate heat exchanger of claim 13 wherein:
the protrusions of two adjacent heat exchange plates, which are sealingly connected to each other at the port portions, protrude in a direction away from each other, and a gap between the two protrusions is in the range of 0.2-0.3 mm.
15. The plate heat exchanger of claim 13 wherein:
the protrusions of two adjacent heat exchange plates, which are sealingly connected to each other at the port portions, protrude in a direction away from each other, a gap between the two protrusions is in the range of 0.2-0.3 mm, and the gap between the two protrusions is filled with solder of the welded plate heat exchanger to weld the two protrusions together.
CN201911189175.0A 2019-10-31 2019-11-27 Heat exchange plate for plate heat exchanger and plate heat exchanger Active CN112747613B (en)

Priority Applications (4)

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EP20880738.8A EP4053488A4 (en) 2019-10-31 2020-10-28 Heat exchange plate for use in plate-type heat exchanger, and plate-type heat exchanger
PCT/CN2020/124321 WO2021083189A1 (en) 2019-10-31 2020-10-28 Heat exchange plate for use in plate-type heat exchanger, and plate-type heat exchanger
US17/773,118 US20230147560A1 (en) 2019-10-31 2020-10-28 Heat exchange plate for plate heat exchanger, and plate heat exchanger
MX2022005030A MX2022005030A (en) 2019-10-31 2020-10-28 Heat exchange plate for use in plate-type heat exchanger, and plate-type heat exchanger.

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CN2019110631648 2019-10-31
CN201911063164 2019-10-31

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US20230147560A1 (en) 2023-05-11
EP4053488A4 (en) 2023-11-08
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CN112747613A (en) 2021-05-04
EP4053488A1 (en) 2022-09-07

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