Heat exchange plate, heat exchanger core and all-welded plate shell type heat exchanger
By designing a heat exchange plate with a single cell area and a corrugated area and applying it in a fully welded plate and shell heat exchanger, the problem of heat transfer deterioration caused by gas accumulation is solved and a more efficient heat exchange effect is achieved.
Patent Information
- Application Number
- CN202323342763.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2033-12-07
AI Technical Summary
In evaporator and condenser applications, the full-welded plate shell heat exchanger has a complex flow channel of ordinary corrugated heat exchange plates, resulting in gas accumulation, reducing the flow area of the plate-side flow channel, resulting in increased pressure drop and deterioration of heat transfer.
A heat exchange plate is designed, which includes a dielectric area, a corrugated area and an edge area. By setting the first through hole and the second through hole, the diopter cell spherical convex and the corrugated convex are formed to increase the heat transfer area and pass through the plate. The right assembly forms a flow passage to avoid fluid accumulation.
It effectively improves the heat transfer efficiency, reduces the pressure drop on the plate side, and enhances the heat transfer performance of the evaporator and condenser.
Smart Images
Figure CN222378889U_ABST
Abstract
Description
Technical Field
[0001] The utility model generally relates to the technical field of heat exchangers, and more particularly to a heat exchange plate, a heat exchanger core and a fully welded plate and shell heat exchanger. Background Art
[0002] The plates of a fully welded plate and shell heat exchanger achieve heat transfer by creating complex disturbances in the fluid through the flow channels on the plates. The plates are sealed by welding, forming two fluid channels on the plate side and the shell side. When a fully welded plate and shell heat exchanger is used in an evaporator, the medium on the cold side (shell side) undergoes a liquid-to-vapor phase transition. The complex flow channels of ordinary corrugated heat exchanger plates can cause gas to accumulate in the upper part of the shell side of the heat exchanger, thereby reducing the flow area of the plate-side flow channels, increasing the plate-side pressure drop and worsening the heat transfer in the evaporator. When a fully welded plate and shell heat exchanger is used in a condenser, the medium on the hot side (shell side) undergoes a gas-to-liquid phase transition. The complex flow channels of ordinary corrugated heat exchanger plates can cause gas to accumulate in the lower part of the shell side of the heat exchanger, thereby reducing the flow area of the plate-side flow channels, increasing the plate-side pressure drop and worsening the heat transfer in the condenser.
[0003] Therefore, it is necessary to provide a heat exchange plate, a heat exchanger core and a fully welded plate and shell heat exchanger to at least partially solve the above problems. Utility Model Content
[0004] The Summary of the Utility Model introduces a series of simplified concepts that will be further described in the Detailed Description of the Utility Model. The Summary of the Utility Model of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.
[0005] To at least partially solve the above problems, a first aspect of the present invention provides a heat exchange plate for a fully welded plate and shell heat exchanger, wherein the heat exchange plate is provided with a first through hole and a second through hole, wherein the first through hole and the second through hole are spaced apart along a first direction;
[0006] The heat exchange plate has two surfaces opposite to each other in a thickness direction, and at least one of the two surfaces is configured to include:
[0007] A D-cell region, wherein the first through hole is located in the D-cell region, the D-cell region includes a D-cell spherical protrusion protruding outward along the thickness direction, and a plurality of the D-cell spherical protrusions are arranged in a rectangular array;
[0008] a corrugated area, wherein the second through hole is located in the corrugated area, the corrugated area includes corrugated protrusions protruding outward along the thickness direction, the corrugated protrusions extend along a second direction inclined to the first direction, and a plurality of the corrugated protrusions are arranged in parallel; and
[0009] An edge zone is located at the circumferential edge of the heat exchange plate. The edge zone is configured as a plane. Along the thickness direction, the first through hole and the second through hole are flush, and the plane where the first through hole is located is spaced apart from the edge zone.
[0010] Optionally, the D-cell region further comprises a D-cell concave concave inwardly concave along the thickness direction, and a plurality of the D-cell concave concave are arranged in a rectangular array;
[0011] Along the first direction, a plurality of the butyl cell spherical protrusions are continuously spaced apart, and a plurality of the butyl cell spherical concavities are continuously spaced apart. Along a direction perpendicular to the first direction, the butyl cell spherical protrusions and the butyl cell spherical concavities are alternately arranged.
[0012] Optionally, the two surfaces are distributed in parallel; or
[0013] The two surfaces are distributed in mirror symmetry.
[0014] Optionally, a distance L1 between the center of the first through hole and the corrugated area is smaller than a distance L2 between the center of the second through hole and the trichome area.
[0015] Optionally, L1 / L2 satisfies 0.4 to 0.75.
[0016] Optionally, an included angle between the first direction and the second direction is 10° to 50°.
[0017] Optionally, the heat exchange plate is configured as a circular plate, and a ratio of an outer diameter of the heat exchange plate to a diameter of the first through hole is greater than or equal to 5.
[0018] Optionally, the top of the butyl cell spherical protrusion is flush with the top of the corrugated protrusion, the plane where the first through hole is located and the plane where the second through hole is located are flush with the top of the butyl cell spherical protrusion, and the edge area is constructed to be flush with the bottom of the butyl cell concave.
[0019] The second aspect of the present invention provides a heat exchanger core, the heat exchanger core comprising at least one plate pair, the plate pair comprising two heat exchange plates according to the first aspect of the present invention,
[0020] Along the thickness direction, the two heat exchange plates are arranged opposite to each other, the first through holes of the two heat exchange plates are aligned, the second through holes of the two heat exchange plates are aligned, the sphere protrusions of the two heat exchange plates are opposite to each other, the corrugated protrusions of the two heat exchange plates are opposite to each other, and the extension directions of the corrugated protrusions of the two heat exchange plates intersect;
[0021] A first channel is formed between the two heat exchange plates, the two first through holes are abutted and sealed and fixedly connected, and the two second through holes are abutted and sealed and fixedly connected, so that the first through holes and the second through holes are separated from the first channel.
[0022] Optionally, at least two plate pairs are stacked along the thickness direction, and the first through holes of two adjacent plate pairs are aligned, the second through holes of two adjacent plate pairs are aligned, and the edge areas of two adjacent plate pairs are fitted and sealed.
[0023] A second channel is formed between two adjacent pairs of plates, and the second channel is connected to the first through hole and the second through hole.
[0024] A third aspect of the present invention provides a fully welded plate and shell heat exchanger, comprising:
[0025] The heat exchanger core according to the second aspect of the present application; and
[0026] The shell is provided with a first shell side opening and a second shell side opening.
[0027] The first shell-side port and the second shell-side port are communicated with the first channel, and the first shell-side port and the second shell-side port are separated from the second channel.
[0028] Details of one or more embodiments of the present application are set forth in the following drawings and description. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The following drawings of the embodiments of the present invention are used as part of the present invention to understand the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,
[0030] Figure 1 Schematic diagram of the structure of the plate pairs of a fully welded plate and shell heat exchanger according to a preferred embodiment of the present invention, showing the structure of the heat exchange plate;
[0031] Figure 2 Schematic diagram of a single heat exchange plate structure of a fully welded plate and shell heat exchanger according to a preferred embodiment of the present invention, wherein only a portion is shown;
[0032] Figure 3 for Figure 1 Schematic diagram of the cross-section structure along line AA, wherein (b) shows an enlarged schematic diagram of the structure at point C in (a);
[0033] Figure 4 for Figure 1 Schematic diagram of the cross-section structure along line BB, wherein (b) shows an enlarged schematic diagram of the structure at D in (a);
[0034] Figure 5 A schematic structural diagram of a fully welded plate and shell heat exchanger according to the present invention applied to evaporation conditions; and
[0035] Figure 6 The figure is a schematic structural diagram of a fully welded plate and shell heat exchanger according to the present invention applied to condensing conditions.
[0036] Description of reference numerals:
[0037] 100: heat exchange plate 110: cell area
[0038] 111: Ding cell ball convex 112: Ding cell ball concave
[0039] 120: Ripple area 121: Connection boundary
[0040] 122: corrugated protrusion 131: first through hole
[0041] 132: Second through hole 140: Edge area
[0042] 200: Heat exchanger 210: Shell
[0043] 211: First shell side opening 212: Second shell side opening
[0044] 220: Heat exchanger core 221: First plate side port
[0045] 222: Second plate side opening 223: Plate pair
[0046] 231: Through hole welding position 232: Edge area welding position
[0047] 310: First channel 320: Second channel
[0048] D1: first direction D2: second direction
[0049] D3: thickness direction DETAILED DESCRIPTION
[0050] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with embodiments of the present invention.
[0051] To thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other embodiments and should not be construed as being limited to the embodiments set forth herein.
[0052] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. The singular forms "a", "an" and "said / the" are also intended to include the plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. The terms "upper", "lower", "front", "back", "left", "right" and similar expressions used in this utility model are for illustrative purposes only, indicating the relative positional relationship between related parts, and do not limit the absolute positions of these related parts.
[0053] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.
[0054] Unless otherwise stated, numerical ranges herein include not only the entire range between its two endpoints but also the several sub-ranges contained therein.
[0055] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".
[0056] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings illustrate representative embodiments of the present invention and are not intended to limit the present invention.
[0057] The utility model provides a heat exchange plate 100, a heat exchanger core 220 and a fully welded plate and shell heat exchanger 200, which can effectively improve the heat exchange efficiency. Figures 1 to 6 The illustrated embodiment illustrates the structure of the heat exchange plate 100 of the present invention.
[0058] The heat exchange plate 100 is provided with first through holes 131 and second through holes 132 , which are spaced apart from each other along the first direction D1 .
[0059] Along the thickness direction D3, the heat exchange plate 100 has two opposite surfaces, at least one of which is configured to include a cellular region 110, a corrugated region 120, and an edge region 140. The first through-holes 131 are located within the cellular region 110, the second through-holes 132 are located within the corrugated region 120, and the edge region 140 is located at the circumferential edge of the heat exchange plate 100 and is configured as a flat surface.
[0060] The cell region 110 includes a plurality of cell spherical projections 111 extending outward along the thickness direction D3, with the plurality of cell spherical projections 111 arranged in a rectangular array. The corrugated region 120 includes corrugated protrusions 122 extending outward along the thickness direction D3, extending along a second direction D2 that is inclined relative to the first direction D1, and the plurality of corrugated protrusions 122 are arranged in parallel.
[0061] The first through-hole 131 and the second through-hole 132 are flush, and the plane where the first through-hole 131 lies and the plane where the edge region 140 lies are spaced apart in the thickness direction of the heat exchange plate 100. This design ensures that when two heat exchange plates 100 are assembled into a plate pair 223 (described below) with the first through-holes 131 abutting each other, the edge regions 140 of the two heat exchange plates 100 are spaced apart, thereby forming a first channel 310 between the two heat exchange plates 100. The aforementioned "flat" and "flush" refer to one surface of the heat exchange plate 100 in the thickness direction D3.
[0062] The heat transfer area can be increased through the cellular structure and the corrugated structure, thereby improving the heat transfer performance and effectively increasing the heat exchange efficiency. A groove is formed between two adjacent corrugated protrusions 122 of the corrugated area 120. In particular, when the heat exchange plate 100 of the present invention is formed into a heat exchanger core 220 (see description below), the grooves of the two heat exchange plates 110 of the plate pair 223 in the corrugated area 120 are cross-distributed, which can play a role in increasing the turbulence intensity of the fluid (medium) and effectively improve the heat exchange efficiency. In addition, the two heat exchange plates 110 of the plate pair 223 are opposite to each other in the cellular area 110, and the straight fluid channel extending along the first direction is formed, which can achieve rapid flow, avoid the accumulation of heat exchange fluid, and further improve the heat exchange efficiency.
[0063] Along the thickness direction D3, the edge region 140 and the first through hole 131 are spaced apart. This allows a flow channel to be formed between the two oppositely disposed heat exchange plates 100 (see the plate pair 223 described later). Specifically, the top of the spherical protrusion 111 of the spherical element is flush with the top of the corrugated protrusion 122, the first through hole 131 (the plane where it is located) and the second through hole 132 (the plane where it is located) are constructed to be flush with the top of the spherical protrusion 111 of the spherical element, and the edge region 140 is constructed to be flush with the bottom of the spherical concave element 112. In other words, the first through hole 131 (and the second through hole 132) and the edge region 140 are respectively located at the two ends of the heat exchange plate 100 in the thickness direction D3.
[0064] For example, the two surfaces of the heat exchange plate 100 in the thickness direction D3 can be distributed in parallel or in a mirror-symmetrical manner. In other embodiments of the present application, the heat exchange plate 100 can also be configured to have two different surfaces. For example, one of the two surfaces is configured to have a cellular area 110, a corrugated area 120, and an edge area 140, and the other of the two surfaces is configured to be a completely cellular surface or a completely corrugated surface.
[0065] In this embodiment, the two surfaces of the heat exchange plate 100 in the thickness direction D3 may be parallel. Specifically, the convex convexity on one surface is formed into the concave convexity on the other surface, and the corrugated convexity on one surface is formed into the groove (between the two corrugated convexities) on the other surface.
[0066] refer to Figure 1 and Figure 2 In this embodiment, the cell region 110 further includes a cell concave 112 that is concave inward along the thickness direction D3, and a plurality of cell concave 112 are arranged in a rectangular array. Along the first direction D1, a plurality of cell convex 111 are continuously spaced apart, and a plurality of cell concave 112 are continuously spaced apart. Along the direction perpendicular to the first direction D1, the cell convex 111 and the cell concave 112 are alternately arranged. Thus, the flow channel of the fluid in the cell region 110 can be widened by the cell concave 112 (see FIG. 2 ). Figure 5 ), speed up heat exchange.
[0067] It is understood that the t-cell concave 112 and the t-cell concave 112 are t-cell structures. The shape of the t-cell structure (the projection shape on the plane of the heat exchange plate) can be circular or elliptical. In this embodiment, the shape of the t-cell structure is circular. Of course, an inwardly concave corrugated groove can also be provided in the corrugated area 120.
[0068] like Figure 1 As shown, the distance L1 between the center of the first through hole 131 and the corrugated area 120 is smaller than the distance L2 between the center of the second through hole 132 and the cell area 110. For example, L1 / L2 satisfies 0.4 to 0.75. Preferably, L1 / L2 is 0.5. Figure 2 As shown, the connection boundary 121 between the corrugated area 120 and the cell area 110 extends in a direction perpendicular to the first direction D1.
[0069] Preferably, the angle between the first direction D1 and the second direction D2 is 10° to 50°, which can further increase the turbulence of the medium during flow and enhance heat transfer.
[0070] In this embodiment, the heat exchange plate 100 is a circular plate. Preferably, the ratio of the outer diameter of the heat exchange plate 100 to the diameter of the first through hole 131 is greater than or equal to 5. The size of the first through hole 131 is the same as the size of the second through hole 132.
[0071] refer to Figures 3 to 6 The second aspect of the present invention provides a heat exchanger core 220, which includes at least one plate pair 223. The plate pair 223 includes two heat exchange plates 100. The two heat exchange plates 100 are arranged opposite to each other along the thickness direction D3. Specifically, "opposite" means that the first through holes 131 of the two heat exchange plates 100 are aligned, and the second through holes 132 of the two heat exchange plates 100 are aligned. The spherical protrusions 111 of the two heat exchange plates 100 are opposite to each other (see Figure 3 and Figure 4 ), the corrugated protrusions 122 of the two heat exchange plates 100 face each other, and the extension directions of the corrugated protrusions 122 of the two heat exchange plates 100 intersect. A first channel 310 is formed between the two heat exchange plates 100. The first channel 310 specifically includes a flow channel extending along the first direction formed in the cellular area 110 and a mesh flow channel formed in the corrugated area 120. The two first through holes 131 are sealed and fixedly connected along the circumferential direction, and the two second through holes 132 are sealed and fixedly connected along the circumferential direction, so that the first through holes 131 and the second through holes 132 are separated from the first channel 310. See Figure 3 and Figure 4 In the plate pair 223 , the two edge regions 140 of the two heat exchange plates 100 are away from each other, so as to facilitate the fluid medium to enter the first channel 310 .
[0072] Exemplarily, the heat exchanger core 220 includes at least two plate pairs 223 stacked along the thickness direction D3. Two adjacent plate pairs 223 are connected, and a second channel 320 is formed between the two adjacent plate pairs 223. The second channel 320 is connected to the first through hole 131 and the second through hole 132.
[0073] Specifically, see Figure 5 and Figure 6In the schematic diagram, the first through holes 131 of two adjacent plate pairs 223 are aligned, and the second through holes 132 of two adjacent plate pairs 223 are aligned. At this time, the edge areas 140 of the two adjacent plate pairs 223 are close to each other, and the two adjacent edge areas 140 are affixed and sealed to form a second channel 320 between the two plate pairs 223. It can be understood that when multiple plate pairs 223 form the heat exchanger core 220, the adjacent plate pairs 223 are also arranged with their respective spherical protrusions 111 facing each other and their respective corrugated protrusions 122 facing each other. Figure 5 and Figure 6 The position of the dotted straight line in the figure is where the connection boundary 121 between the cell area 110 and the ripple area 120 is located.
[0074] The second channel 320 is not connected to the first channel 310. It can be understood that the first channel 310 and the second channel 320 respectively serve as transmission channels for two fluid media that need to be heat exchanged. The two fluid media flow on the two surfaces of the heat exchange plate 100 along the thickness direction D3, respectively, to achieve heat exchange through the heat exchange plate 100.
[0075] Combine Figure 5 and Figure 6 The third aspect of the present invention provides a fully welded plate and shell heat exchanger 200, which includes a heat exchanger core 220 and a shell 210, wherein the shell 210 is covered outside the heat exchanger core 220. The shell 210 is provided with a first shell side port 211 and a second shell side port 212, wherein the first shell side port 211 and the second shell side port 212 are connected to the first channel 310, and the first shell side port 211 and the second shell side port 212 are separated from the second channel 320. In this embodiment, the first shell side port 211 is closer to the first through hole 131 than the second shell side port 212 (the first shell side port 211 is located near the cell area 110). The first shell side port 211 is an inlet (for the fluid medium input for heat exchange on the shell side), and the second shell side port 212 is an outlet.
[0076] Figure 5 and Figure 6 The figure also shows the connection positions between the heat exchange plates 100 in the heat exchanger core 220. The adjacent heat exchange plates 100 are fixedly connected by welding. The heat exchanger core 220 includes through-hole welding positions 231 and edge area welding positions 232.
[0077] Figure 5 and Figure 6In the embodiment, the heat exchanger core 220 further includes a first plate side port 221 and a second plate side port 222. The first through-holes 131 of the plurality of plate pairs 223 are aligned and communicate with the second channel 320. The first through-holes 131 of the outermost plate pair 223 along the thickness direction D3 can serve as the first plate side port 221 of the heat exchanger core 220. The second through-holes 132 of the plurality of plate pairs 223 are aligned and communicate with the second channel 320. The second through-hole 132 of the outermost plate pair 223 along the thickness direction D3 can serve as the second plate side port 222 of the heat exchanger core 220. The first plate side port 221 serves as an inlet (for the fluid medium input for heat exchange on the plate side), and the second plate side port 222 serves as an outlet.
[0078] refer to Figure 5 and Figure 6 In the illustrated embodiment, the first plate side port 221 and the second plate side port 222 are located on the same side of the heat exchanger core 220 in the thickness direction D3. Connecting pipes are provided at the first plate side port 221 and the second plate side port 222, respectively. The connecting pipes extend through the shell 210 to facilitate connecting the first plate side port 221 and the second plate side port 222 to other devices.
[0079] Figure 5 In the figure, the fully welded plate and shell heat exchanger 200 is in the evaporation state. The medium on the plate side enters the second channel 320 through the first plate side port 221, and the medium on the shell side enters the first channel 310 through the second shell side port 212. After the heat exchange, the medium on the shell side is discharged through the first shell side port 211, and the medium on the plate side is discharged through the second plate side port 222. In the figure, the flow direction of the plate side fluid medium is indicated by a black solid arrow, and the flow direction of the shell side fluid medium is indicated by a black hollow arrow. The fluid medium to be evaporated is input from the shell side. The fluid medium on the shell side can first pass through the corrugated area 120 to fully contact and exchange heat with the plate side fluid medium. After being heated, it evaporates and then flows out quickly through the straight flow channel of the cell area 110.
[0080] Figure 6 In the figure, the fully welded plate and shell heat exchanger 200 is in the condensing condition, the medium on the plate side enters the second channel 320 through the first plate side port 221, and the medium on the shell side enters the first channel 310 through the second shell side port 212. After the heat exchange, the medium on the shell side is discharged through the first shell side port 211, and the medium on the plate side is discharged through the second plate side port 222. In the figure, the flow direction of the plate side fluid medium is indicated by a black solid arrow, and the flow direction of the shell side fluid medium is indicated by a black hollow arrow. The fluid medium that needs to be condensed is input from the shell side, and the fluid medium on the shell side can first pass through the corrugated area 120 to fully contact and exchange heat with the plate side fluid medium. After being cooled, it condenses and then quickly drips out through the straight flow channel of the cell area 110.
[0081] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise stated.
[0082] The present invention has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Those skilled in the art will appreciate that many more variations and modifications may be made based on the teachings of the present invention, and all of these variations and modifications fall within the scope of protection claimed by the present invention.
Claims
1. A heat exchange plate for a fully welded plate and shell heat exchanger, characterized in that: The heat exchange plate is provided with a first through hole and a second through hole, and the first through hole and the second through hole are arranged spaced apart along a first direction; The heat exchange plate has two surfaces opposite to each other in the thickness direction, and at least one of the two surfaces is configured to include: A Ding-cell region, wherein the first through hole is located in the Ding-cell region, and the Ding-cell region includes a Ding-cell spherical protrusion protruding outward along the thickness direction, and a plurality of the Ding-cell spherical protrusions are arranged in a rectangular array; a corrugated area, wherein the second through hole is located in the corrugated area, the corrugated area comprises corrugated protrusions protruding outwardly along the thickness direction, the corrugated protrusions extend along a second direction inclined to the first direction, and a plurality of the corrugated protrusions are arranged in parallel; as well as An edge zone is located at the circumferential edge of the heat exchange plate, the edge zone is configured as a plane, along the thickness direction, the first through hole and the second through hole are flush, and the plane where the first through hole is located is spaced apart from the edge zone.
2. The heat exchange plate according to claim 1, characterized in that: The Ding-cell region also includes a Ding-cell spherical concave that is concave inwardly along the thickness direction, and a plurality of the Ding-cell spherical concave are arranged in a rectangular array; Along the first direction, a plurality of the Ding-cell ball convexities are arranged continuously at intervals, and a plurality of the Ding-cell ball concaveities are arranged continuously at intervals. Along the direction perpendicular to the first direction, the Ding-cell ball convexities and the Ding-cell ball concaveities are arranged alternately.
3. The heat exchange plate according to claim 1, characterized in that: The two surfaces are arranged in parallel; or The two surfaces are distributed in mirror symmetry.
4. The heat exchange plate according to claim 1, characterized in that: Along the first direction, a distance L1 between the center of the first through hole and the corrugated area is smaller than a distance L2 between the center of the second through hole and the triceratops area.
5. The heat exchange plate according to claim 4, characterized in that: L1 / L2 meets the requirement of 0.4~0.
75.
6. The heat exchange plate according to claim 1, characterized in that: The included angle between the first direction and the second direction is 10° to 50°.
7. The heat exchange plate according to claim 1, characterized in that: The heat exchange plate is configured as a circular plate, and a ratio of an outer diameter of the heat exchange plate to a diameter of the first through hole is greater than or equal to 5.
8. The heat exchange plate according to claim 2, characterized in that: The top of the Ding-cell spherical protrusion is flush with the top of the corrugated protrusion, the plane where the first through hole is located and the plane where the second through hole is located are flush with the top of the Ding-cell spherical protrusion, and the edge area is constructed to be flush with the bottom of the Ding-cell spherical concave.
9. A heat exchanger core, characterized in that: The heat exchanger core comprises at least one plate pair, wherein the plate pair comprises two heat exchange plates according to any one of claims 1 to 8. Along the thickness direction, the two heat exchange plates are arranged opposite to each other, the first through holes of the two heat exchange plates are aligned, the second through holes of the two heat exchange plates are aligned, the butyl sphere convexities of the two heat exchange plates are opposite to each other, the corrugated convexities of the two heat exchange plates are opposite to each other, and the extension directions of the corrugated convexities of the two heat exchange plates intersect; A first channel is formed between the two heat exchange plates, the two first through holes are abutted and sealed and fixedly connected, and the two second through holes are abutted and sealed and fixedly connected, so that the first through holes and the second through holes are separated from the first channel.
10. The heat exchanger core according to claim 9, characterized in that: At least two of the plate pairs are stacked along the thickness direction, and the first through holes of two adjacent plate pairs are aligned, the second through holes of two adjacent plate pairs are aligned, and the edge areas of two adjacent plate pairs are fitted and sealed; A second channel is formed between two adjacent pairs of plates, and the second channel is connected to the first through hole and the second through hole.
11. A fully welded plate and shell heat exchanger, characterized in that: The fully welded plate and shell heat exchanger comprises: The heat exchanger core according to claim 9 or 10; and A shell, wherein the shell cover is arranged outside the heat exchanger core, and the shell is provided with a first shell side port and a second shell side port, The first shell-side port and the second shell-side port are in communication with the first passage, and the first shell-side port and the second shell-side port are separated from the second passage.