Heat Exchanger

Abstract

Disclosed is a heat exchanger, comprising a first plate, a first connecting portion, a second plate, a second connecting portion and a third plate, the second plate being located between the first plate and the third plate, the heat exchanger comprising a first side and a second side, the first connecting portion being located on the first side of the heat exchanger and the second connecting portion being located on the second side of the heat exchanger, the first connecting portion, the first plate and the second plate being integral, the second connecting portion, the second plate and the third plate being integral, a first flow passage being between the first plate and the second plate, The first plate and the second plate are arranged in a sealed manner, the sealed area between the first plate and the second plate surrounds at least the first flow passage, there is a second flow passage between the second plate and the third plate, the second plate and the third plate are arranged in a sealed manner, the sealed area between the second plate and the third plate surrounds at least the second flow passage, the heat exchanger is formed by folding the same plate, there is no need to stack them one by one, it is convenient to install.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on May 11, 2022, bearing application number 202210511442.7 and entitled "Heat Exchanger", the entire contents of which are incorporated herein by reference.

[0002] TECHNICAL FIELD This application relates to the field of heat exchange, and more particularly to heat exchangers. [Background technology]

[0003] A heat exchanger generally includes a plurality of heat exchange plate pieces arranged in a stack, with burring provided around the periphery of each heat exchange plate piece, and the burring of adjacent heat exchange plate pieces are arranged in a sealed manner. If a plurality of heat exchange plate pieces are arranged separately, they are stacked one by one when assembled, and since the number of heat exchange plate pieces is generally large, incorrect assembly is likely to occur. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present application is to provide a heat exchanger that is easy to install. [Means for solving the problem]

[0005] One embodiment of the present application provides a heat exchanger, comprising: a heat exchange plate, the heat exchange plate comprising a first plate, a second plate and a third plate, the second plate being located between the first plate and the third plate and defining a first direction, along which the heat exchanger has a first side and a second side, the heat exchanger comprising a first connection portion located on the first side of the heat exchanger and a second connection portion located on the second side of the heat exchanger, the first connection portion, the first plate and the second plate being integrally structured, the second connection portion, the second plate and the third plate being integrally structured, A first flow passage is present between the first plate piece and the second plate piece, the first plate piece and the second plate piece are arranged in a sealed manner, and the sealed area between the first plate piece and the second plate piece surrounds at least the first flow passage; a second flow passage is present between the second plate piece and the third plate piece, the second plate piece and the third plate piece are arranged in a sealed manner, and the sealed area between the second plate piece and the third plate piece surrounds at least the second flow passage. Effect of the Invention

[0006] In the above technical solution, the first connecting portion, the first plate piece, the second plate piece, the second connecting portion, and the third plate piece are an integral structure, the first connecting portion is located on a first side of the heat exchanger, the second connecting portion is located on a second side of the heat exchanger, and at least a part of the heat exchanger is formed by folding the same plate piece, which contributes to installation. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram of the overall structure of one embodiment of a heat exchanger of the present invention. [Diagram 2] FIG. 2 is a structural schematic diagram of the heat exchanger of FIG. 1 in one direction. [Diagram 3] FIG. 2 is a schematic cross-sectional view taken along the line AA in FIG. [Figure 4] FIG. 4 is a local enlarged view of a portion C in FIG. [Diagram 5] FIG. 4 is a local enlarged view of a portion D in FIG. 3. [Figure 6] FIG. 2 is a schematic cross-sectional view of the BB direction in FIG. [Figure 7] FIG. 7 is a locally enlarged view of a portion E in FIG. 6. [Figure 8] FIG. 2 is a structural schematic diagram of a heat exchanger plate piece before installation in the heat exchanger of the present invention. [Figure 9] FIG. 2 is a schematic diagram of the three-dimensional structure of the first plate piece of the heat exchanger of the present invention in one direction. [Figure 10] FIG. 4 is a schematic diagram of the three-dimensional structure of the first plate piece of the heat exchanger of the present invention in another direction. [Figure 11]FIG. 2 is a schematic diagram of the three-dimensional structure of the second plate piece of the heat exchanger of the present invention in one direction. [Figure 12] FIG. 4 is a schematic diagram of the three-dimensional structure of the second plate piece of the heat exchanger of the present invention in another direction. [Figure 13] FIG. 4 is a schematic cross-sectional view of a heat exchanger according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Specific embodiments will now be described in detail with reference to the drawings. In order to fully understand the present invention, numerous specific details are referred to in the following detailed description; however, it will be understood by those skilled in the art that the specific units, devices and features shown in the drawings and described herein are merely exemplary and not limiting.

[0009] As shown in Figs. 1 to 13, the heat exchanger 1 includes a heat exchange plate 2, the heat exchange plate 2 includes a first plate 10, a second plate 20 and a third plate 30, the second plate 20 is located between the first plate 10 and the third plate 30, and defines a first direction, along which the heat exchanger 1 includes a first side 110 and a second side 120, as shown in Figs. 1 to 3, the direction F is the first direction, the first plate 10 and the second plate 20 are connected by a first connection portion 50 at the first side 110 of the heat exchanger 1, the first connection portion 50, the first plate 10 and the second plate 20 are an integral structure, the second plate 20 and the third plate 30 are connected by a second connection portion 60 at the second side 120 of the heat exchanger 1, and the second connection portion 60, the second plate 20 and the third plate 30 are an integral structure. 1 to 8, the first plate piece 10, the second plate piece 20, and the third plate piece 30 are formed by folding the same plate piece, a first flow passage 3 is provided between the first plate piece 10 and the second plate piece 20, the first plate piece 10 and the second plate piece 20 are arranged in a sealed manner, and the sealed area of ​​the first plate piece 10 and the second plate piece 20 surrounds at least the first flow passage 3, thereby realizing a sealing around the first flow passage 3, and a second flow passage 4 is provided between the second plate piece 20 and the third plate piece 30, the second plate piece 20 and the third plate piece 30 are arranged in a sealed manner, and the sealed area of ​​the second plate piece 20 and the third plate piece 30 surrounds at least the second flow passage 4, thereby realizing a sealing around the second flow passage 4. The heat exchanger 1 is formed by folding identical plate pieces, and does not need to be stacked one by one, which avoids misassembly and is convenient for installation. The first plate piece 10 and the second plate piece 20 are connected by the first connecting part 50 at the first side part 110 of the heat exchanger 1, and the second plate piece 20 and the third plate piece 30 are connected by the second connecting part 60 at the second side part 120 of the heat exchanger 1. This allows continuous pressing or rolling of the same plate material when processing the heat exchange plate pieces 2, and does not require pressing the heat exchange plate pieces 2 one by one, improving processing efficiency and reducing processing costs.

[0010] As shown in Figures 1 to 8, multiple heat exchange plates 2 are formed by folding the same plate, and the heat exchange plates 2 in the odd layers have the same structure, and the heat exchange plates 2 in the even layers have the same structure, that is, the first plate 10 and the third plate 30 have the same structure. Of course, the heat exchanger 1 may have only three heat exchange plates 2, namely the first plate 10, the second plate 20 and the third plate 30, and the structure of the first plate 10 and the structure of the third plate 30 may be different.

[0011] As shown in Figs. 1 to 13, the second plate 20 includes a first base 21 and a first protruding portion 22 protruding from the first base 21, the first protruding portion 22 is annular and is provided to surround the second flow passage 4, the first protruding portion 22 and the third plate 30 are arranged in a sealed manner, and the arrangement of the first protruding portion 22 realizes a sealed arrangement of the second plate 20 and the third plate 30, and the first protruding portion 22 ensures that the second flow passage 4 has a constant height, and the height of the second flow passage 4 can be adjusted by adjusting the height of the first protruding portion 22. The first plate 10 is arranged in a sealed manner on the first base 21 located around the first protruding portion 22, and the length of the first connecting portion 50 is shorter than the length of the second connecting portion 60, and by shortening the length of the first connecting portion 50, the cost is reduced and the weight of the heat exchanger 1 is lightened. Of course, the first base 21 located inside the first protrusion 22 is provided with an annular protrusion protruding toward the first plate piece 10, and is arranged in a sealed manner to the first plate piece 10, thereby realizing sealing around the first flow passage 3; alternatively, the first plate piece 10 is provided with an annular protrusion protruding toward the second plate piece 20, and is arranged in a sealed manner to the first base 21 located inside the first protrusion 22, thereby realizing sealing around the first flow passage 3; alternatively, the first base 21 located inside the first protrusion 22 is provided with an annular protrusion protruding toward the first plate piece 10, and the first plate piece 10 is provided with an annular protrusion protruding toward the second plate piece 20, and the two annular protrusions are arranged in a sealed manner to realizing sealing around the first flow passage 3. Here, the sealing arrangement may be specifically fixed by brazing or may be fixed by a sealant.

[0012] In some specific embodiments, the first flow passage 3 and the second flow passage 4 are provided with turbulent protrusions. As shown in Figures 1 to 12, the heat exchanger 1 further includes a fourth plate 40, the third plate 30 is located between the second plate 20 and the fourth plate 40, the third connection portion 70 is located on the first side 110 of the heat exchanger, the third plate 30 is connected to the fourth plate 40 by the third connection portion 70, the third connection portion 70, the third plate 30 and the fourth plate 40 are integrally formed, the third flow passage 5 is between the third plate 30 and the fourth plate 40, the third plate 30 and the fourth plate 40 are arranged in a sealed manner, and the sealed area of ​​the third plate 30 and the fourth plate 40 surrounds at least the third flow passage 5, thereby realizing a sealing around the third flow passage 5. The first plate piece 10 includes a second base 11 and a second convex portion 12 protruding relative to the second base 11, the second base 11 being arranged to surround the second convex portion 12, the second plate piece 20 includes a first base 21 and a first convex portion 22 protruding relative to the first base 21, the protruding direction of the second convex portion 12 is opposite to the protruding direction of the first convex portion 22, the first convex portion 22 is annular, the first base 21 includes a first inner base 211 and a first outer base 212, the first convex portion 22 is arranged to surround the first inner base 211, the first outer base 212 is arranged to surround the first convex portion 22, the third plate piece 30 includes a third base 31 and a third convex portion 32 protruding relative to the third base 31, the protruding direction of the third convex portion 32 is opposite to the protruding direction of the first convex portion 22, the first convex portion 22 is annular, the protruding direction of the fourth convex portion 42 is opposite to the protruding direction of the third convex portion 32, the third base 31 is arranged to surround the third convex portion 32, the fourth plate piece 40 includes a fourth base 41 and a fourth convex portion 42 protruding relative to the fourth base 41, the protruding direction of the fourth convex portion 42 is opposite to the protruding direction of the third convex portion 32, the fourth convex portion 42 is annular, the fourth base 41 includes a fourth inner base 411 and a fourth outer base 412, the fourth convex portion 42 is arranged to surround the fourth inner base 411, the fourth outer base 412 is arranged to surround the fourth convex portion 42, the second base 11 and the first outer base 212 are arranged in a sealed state, the first convex portion 22 and the third convex portion 32 are arranged in a sealed state, and the third base 31 and the fourth outer base 412 are arranged in a sealed state.The second convex portion 12 is provided with a first protrusion 13 protruding toward the second plate piece 20, at least a portion of the first protrusion 13 abuts against the first inner base 211, the first inner base 211 is provided with a second protrusion 23 protruding toward the third plate piece 30, at least a portion of the second protrusion 23 abuts against the third convex portion 32, the third convex portion 32 has a third protrusion 33 protruding toward the fourth plate piece 40, at least a portion of the third protrusion 33 abuts against the fourth inner base 411, and the fourth base 41 is provided with a fourth protrusion 43 protruding away from the third plate piece 30. In this embodiment, the shape of the protrusion is elongated, and the elongated protrusion is arranged to form an angle with the longitudinal direction of the heat exchange plate piece 2. Of course, the shape of the protrusion may be a herringbone wave or a dot wave, for example, a plurality of circular protrusions arranged discretely, or a polygonal protrusion. Here, when the heat exchanger 1 has only the first plate piece 10, the second plate piece 20 and the third plate piece 30, i.e., when it has only the first flow passage 3 and the second flow passage 4, only the first protrusion 13 and the second protrusion 23 may be arranged, or only the second protrusion 23 and the third protrusion 33 may be arranged, or only the second protrusion 23 may be arranged, and of course, the second plate piece 20 may be provided with a protrusion protruding toward the first plate piece 10 and a protrusion protruding toward the third plate piece 30.

[0013] 13, the first flow passage 3 or the second flow passage 4 may not be provided with protrusions for turbulence, i.e., no protrusions are provided on the second convex portion 12 of the first plate piece 10, no protrusions are provided on the first inner base 211 located inside the first convex portion 22 of the second plate piece 20, no protrusions are provided on the third convex portion 32 of the third plate piece 30, and the first flow passage 3 and the second flow passage 4 are provided with fins to realize turbulence for the heat exchange fluid and improve the heat exchange effect. Of course, turbulence may be realized by arranging protrusions by plates only in the first flow passage 3 or the second flow passage 4, and turbulence may be realized by arranging fins in the other passages.

[0014] In some specific embodiments, the heat exchanger 1 further includes a first square hole passage 6, a second square hole passage 7, a third square hole passage 8, and a fourth square hole passage 9, the first flow passage 3 communicates with the first square hole passage 6 and the second square hole passage 7, the second flow passage 4 communicates with the third square hole passage 8 and the fourth square hole passage 9, and the third flow passage 5 communicates with the first square hole passage 6 and the second square hole passage 7. When the heat exchanger 1 has multiple flow passages, the flow passages of the odd-numbered layers communicate with the first square hole passage 6 and the second square hole passage 7, and the flow passages of the even-numbered layers communicate with the third square hole passage 8 and the fourth square hole passage 9. As shown in FIGS. 1 to 12 , each heat exchange plate piece 2 has a first square hole 100, a second square hole 200, a third square hole 300 and a fourth square hole 400, and the first square holes 100 of the multiple heat exchange plate pieces 2 are at least partially aligned to form a first square hole passage 6, the second square holes 200 of the multiple heat exchange plate pieces 2 are at least partially aligned to form a second square hole passage 7, and the third square holes 300 of the multiple heat exchange plate pieces 2 are at least partially aligned to form a third square hole passage 8. The fourth square holes 400 of the heat exchange plate pieces 2 are at least partially aligned to form the fourth square hole passage 9, the first square hole 100 and the second square hole 200 are circular, located at both ends in the length direction of the heat exchange plate piece 2 and close to the second side 120 of the heat exchanger 1, and the third square hole 300 and the fourth square hole 400 are elliptical, located at both ends in the length direction of the heat exchanger 1 and close to the first side 110 of the heat exchanger 1. Specifically, the first plate piece 10 has a Two first bosses 14 are provided protruding toward the second plate piece 20, a top portion of the first bosses 14 and the second base 11 are located on the same plane, a third square hole 300 or a fourth square hole 400 is provided in the top portion of the first bosses 14, the first square hole 100 and the second square hole 200 of the first plate piece 10 are located in the second convex portion 12, and two second bosses 24 are provided in the second plate piece 20 protruding toward the third plate piece 30, and a top portion of the second bosses 24 and the top of the first convex portion 22 are located on the same plane. The second boss portion 24 is located on the same plane as the first plate piece 20, a first square hole 100 or a second square hole 200 is provided in the top portion of the second boss portion 24, the third square hole 300 and the fourth square hole 400 of the second plate piece 20 are located in the first inner base 211, the third plate piece 30 is provided with a third boss portion 34 whose specific structure is similar to that of the first plate piece 10, and the fourth plate piece 40 is provided with a fourth boss portion 44 whose specific structure is similar to that of the second plate piece 20, and so on can be inferred.There are gaps between the first square hole 100 and the second square hole 200 of the first plate piece 10 and the first square hole 100 and the second square hole 200 of the second plate piece 20, which allows communication between the first flow passage 3 and the first square hole passage 6 and the second square hole passage 7. The top portion of the first boss portion 14 around the third square hole 300 or the fourth square hole 400 of the first plate piece 10 and the first inner base 211 around the third square hole 300 or the fourth square hole 400 of the second plate piece 20 are arranged in a sealed manner. The top portion of the second boss portion 21 around the first square hole 100 or the second square hole 200 of the second plate piece 20 and the top portion of the third convex portion 32 around the first square hole 100 or the second square hole 200 of the third plate piece 30 are arranged in a sealed manner, and there are gaps between the third square hole 300 and the fourth square hole 400 of the second plate piece 20 and the third square hole 300 and the fourth square hole 400 of the third plate piece 30, thereby realizing communication between the second flow passage 4 and the third square hole passage 8 and the fourth square hole passage 9.

[0015] Of course, some heat exchange plate pieces 2 may have only two square holes, or three square holes, or five square holes, etc., and different numbers of square holes can realize different stroke arrangements of the flow passages. The shapes of the square holes may be the same, for example, they are all circular.

[0016] Here, the heat exchanger provided by the present invention is introduced in detail. In this specification, the principle and embodiment of the present invention are described using specific examples, and the above description of the embodiments is only for understanding the gist of the present invention. Those skilled in the art may make some improvements and modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A heat exchanger (1), comprising a heat exchange plate piece (2), the heat exchange plate piece (2) comprising a first plate piece (10), a second plate piece (20) and a third plate piece (30), the second plate piece (20) being located between the first plate piece (10) and the third plate piece (30) and defining a first direction, the first direction being perpendicular to a stacking direction of the heat exchange plate pieces (2), the heat exchanger (1) comprising a first side portion (110) and a second side portion (120), and a first side portion (110) and a second side portion (120) are stacked along the first direction. The second side portions (120) are located on opposite sides of the heat exchanger (1), and the heat exchanger (1) includes a first connection portion (50) located on the first side (110) of the heat exchanger (1) and a second connection portion (60) located on the second side (120) of the heat exchanger (1), and the first connection portion (50), the second connection portion (60), the third plate piece (30), the first plate piece (10), and the second plate piece (20) are of an integral structure.

2. The heat exchanger (1) of claim 1, characterized in that a first flow passage (3) is present between the first plate piece (10) and the second plate piece (20), the first plate piece (10) and the second plate piece (20) are arranged in a sealed manner, and a region in which the first plate piece (10) and the second plate piece (20) are arranged in a sealed manner surrounds at least the first flow passage (3), and a second flow passage (4) is present between the second plate piece (20) and the third plate piece (30), the second plate piece (20) and the third plate piece (30) are arranged in a sealed manner, and a region in which the second plate piece (20) and the third plate piece (30) are arranged in a sealed manner surrounds at least the second flow passage (4).

3. The heat exchanger (1) of claim 1 or 2, characterized in that the second plate piece (20) includes a first base (21) and a first convex portion (22) protruding relative to the first base (21), the first convex portion (22) surrounds the second flow passage (4), the first convex portion (22) and the third plate piece (30) are arranged in a sealed state, and the first base (21) and the first plate piece (10) are arranged in a sealed state.

4. The heat exchanger (1) of claim 3, characterized in that the first plate piece (10) includes a second base (11) and a second convex portion (12) protruding relative to the second base (11), the protruding direction of the second convex portion (12) is opposite to the protruding direction of the first convex portion (22), the second base (11) is arranged to surround the second convex portion (12), the first base (21) includes a first outer base (212) arranged to surround the first convex portion (22), and the second base (11) and the first outer base (212) are arranged in a sealed manner.

5. The heat exchanger (1) of claim 3, characterized in that the third plate piece (30) includes a third base (31) and a third convex portion (32) protruding relative to the third base (31), the protruding direction of the third convex portion (32) is opposite to the protruding direction of the first convex portion (22), the third base (31) is arranged to surround the third convex portion (32), and the first convex portion (22) and the third convex portion (32) are arranged in a sealed manner.

6. The heat exchanger (1) of claim 4, characterized in that the second convex portion (12) is provided with a first projection (13) protruding toward the second plate piece (20), the first base (21) includes a first inner base (211), the first convex portion (22) is arranged to surround the first inner base (211), and at least a portion of the first projection (13) abuts against the first inner base (211).

7. The heat exchanger (1) of claim 5, characterized in that the first base (21) includes a first inner base (211), the first convex portion (22) is arranged to surround the first inner base (211), the first inner base (211) is provided with a second protrusion (23) protruding toward the third plate piece (30), the third convex portion (32) has a third protrusion (33) protruding away from the second plate piece (20), and at least a portion of the second protrusion (23) abuts against the third convex portion (32).

8. The heat exchanger (1) according to any one of claims 1 to 7, characterized in that the heat exchanger (1) further includes a first square hole passage (6), a second square hole passage (7), a third square hole passage (8), and a fourth square hole passage (9), the first flow passage (3) communicates with the first square hole passage (6) and the second square hole passage (7), and the second flow passage (4) communicates with the third square hole passage (8) and the fourth square hole passage (9).

9. The heat exchanger (1) according to any one of claims 1 to 7, characterized in that the heat exchanger (1) further includes a fourth plate piece (40) and a third connection portion (70), the third plate piece (30) is located between the second plate piece (20) and the fourth plate piece (40), the third connection portion (70) is located on a first side portion (110) of the heat exchanger (1), the third connection portion (70), the third plate piece (30) and the fourth plate piece (40) are of an integral structure, a third flow passage (5) is present between the third plate piece (30) and the fourth plate piece (40), the third plate piece (30) and the fourth plate piece (40) are arranged in a sealed state, and a region where the third plate piece (30) and the fourth plate piece (40) are arranged in a sealed state surrounds at least the third flow passage (5).

10. 10. The heat exchanger (1) according to claim 9, further comprising a first square hole passage (6), a second square hole passage (7), a third square hole passage (8), and a fourth square hole passage (9), wherein the first flow passage (3) is in communication with the first square hole passage (6) and the second square hole passage (7), the second flow passage (4) is in communication with the third square hole passage (8) and the fourth square hole passage (9), and the third flow passage (5) is in communication with the first square hole passage (6) and the second square hole passage (7).

11. The first plate piece (10) includes a second base (11) and a second convex portion (12) protruding relative to the second base (11), the second base (11) surrounds the second convex portion (12), the second plate piece (20) includes a first base (21) and a first convex portion (22) protruding relative to the first base (21), and the first base (21) includes a first inner base (211) and a first outer base (212). The first protrusion (22) surrounds the first inner base (211), the first outer base (212) surrounds the first protrusion (22), the first protrusion (22) is opposite to the protruding direction of the second protrusion (12), the third plate piece (30) includes a third base (31) and a third protrusion (32) protruding relative to the third base (31), and the third base (31) is connected to the third protrusion (32). the fourth plate piece (40) includes a fourth base (41) and a fourth convex portion (42) protruding relative to the fourth base (41), the fourth base (41) includes a fourth inner base (411) and a fourth outer base (412), the fourth convex portion (42) surrounds the fourth inner base (411), the fourth outer base (412) surrounds the fourth convex portion (42), the protruding direction of the fourth convex portion (42) is opposite to the protruding direction of the third convex portion (32), the second base (11) and the first outer base (212) are arranged in a sealed state, the first convex portion (22) and the third convex portion (32) are arranged in a sealed state, and the third base (31) and the fourth outer base (412) are arranged in a sealed state, The heat exchanger (1) of claim 10, characterized in that the second convex portion (12) is provided with a first projection (13) protruding toward the second plate piece (20), at least a portion of the first projection (13) abutting against the first inner base (211), the first inner base (211) is provided with a second projection (23) protruding toward the third plate piece (30), at least a portion of the second projection (23) abutting against the third convex portion (32), the third convex portion (32) has a third projection (33) protruding toward the fourth plate piece (40), at least a portion of the third projection (33) abutting against the fourth inner base (411).

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