A plate channel structure, a heat exchanger core, and a printed circuit board type heat exchanger.

Abstract

This invention provides a plate channel structure, a heat exchanger core, and a printed circuit board heat exchanger, belonging to the technical field of plate heat exchangers. The plate channel structure includes a plate body with several heat exchange channels of different lengths. Several first strip-shaped ribs are spaced apart within the heat exchange channels along the medium flow direction. The angles of the first strip-shaped ribs relative to the medium flow direction differ within heat exchange channels of different lengths; the longer the heat exchange channel, the smaller the angle of the first strip-shaped rib within that channel. The plate channel structure of this invention can improve the uniformity of fluid distribution within different heat exchange channels, thereby improving the overall performance of the heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of plate heat exchanger technology, specifically to a plate channel structure, a heat exchanger core, and a printed circuit board type heat exchanger. Background Technology

[0002] Printed circuit board heat exchangers (PCHE heat exchangers) are mainly used in petrochemical, aerospace, shipbuilding, electronics, nuclear energy and machinery industries.

[0003] The core of a printed circuit board heat exchanger mainly consists of a hot side plate, a cold side plate, and an outer side plate. Its flow channels are achieved through a chemical etching process and are reflected on the hot and cold side plates. The heat exchanger core is formed by regularly stacking the plates and welding them together using brazing or diffusion welding.

[0004] In existing products, when the inlet and outlet of a heat exchanger are arranged on the same side, the lengths of the multiple heat exchange channels inside are different. This can easily lead to uneven distribution of the heat exchange medium in different heat exchange channels, and the uniformity of heat exchange medium distribution has a significant impact on the overall performance of the heat exchanger. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of uneven distribution of heat exchange medium in different heat exchange channels in the prior art printed circuit board heat exchanger, thereby providing a plate channel structure, a heat exchanger core and a printed circuit board heat exchanger having the same.

[0006] To solve the above-mentioned technical problems, the present invention provides a plate channel structure, comprising: a plate body, wherein the plate body has a plurality of heat exchange channels of different lengths, and a plurality of first strip ribs are provided at intervals along the medium flow direction in the heat exchange channels.

[0007] The angle of the first strip rib relative to the direction of medium flow is different in heat exchange channels of different lengths. The longer the heat exchange channel, the smaller the angle of the first strip rib in the heat exchange channel.

[0008] Optionally, a plurality of first support ribs are provided in the heat exchange channel, the first support ribs are disposed between two adjacent first strip ribs, and the length of the first support ribs is less than that of the first strip ribs.

[0009] Optionally, the first support rib is a circular rib.

[0010] Optionally, the inlet and outlet of the heat exchange channel are located on the same side of the plate body.

[0011] Optionally, on the plate body, a longer heat exchange channel partially surrounds the outside of a shorter heat exchange channel, and several heat exchange channels are arranged sequentially according to their length.

[0012] Optionally, the inlet of the heat exchange channel is provided with a plurality of second strip ribs, the spacing between the second strip ribs being smaller than the spacing between the first strip ribs;

[0013] And / or, the outlet of the heat exchange channel is provided with a plurality of second strip ribs, the spacing of the second strip ribs being smaller than the spacing of the first strip ribs.

[0014] The present invention provides a heat exchanger core, comprising: a first plate, a second plate, and a side plate stacked together, wherein the first plate adopts the plate channel structure described in any one of the above schemes.

[0015] Optionally, the second plate has a cooling medium flow channel, and the cooling medium flow channel has a third strip rib, the third strip rib being at least centrally opposite to the center of the first strip rib, and the third strip rib having the same angle relative to the flow direction of the cooling medium in the cooling medium flow channel.

[0016] Optionally, the cooling medium flow channel also has a second support rib, which is disposed between two adjacent third strip ribs, and at least part of the second support rib is directly opposite the first support rib in the heat exchange flow channel.

[0017] The present invention provides a printed circuit board type heat exchanger, comprising: the plate channel structure or heat exchanger core described in any of the above embodiments.

[0018] The technical solution of this invention has the following advantages:

[0019] 1. The plate channel structure provided by this invention can improve the uniformity of fluid distribution in different heat exchange channels and improve the overall performance of the heat exchanger. Specifically, according to the different lengths of the heat exchange channels, first strip ribs with different angles are set on the plate body. First strip ribs with larger angles are set in shorter heat exchange channels, and first strip ribs with smaller angles are set in longer heat exchange channels. By setting the first strip ribs, the resistance of the fluid in different heat exchange channels is changed, thereby improving the uniformity of fluid distribution in different heat exchange channels.

[0020] 2. The heat exchanger core provided by the present invention forms heat exchange channels and cooling medium channels in sequence through stacked plates, and adopts the above-mentioned channel structure, thus also having the above-mentioned advantages.

[0021] 3. The printed circuit board heat exchanger provided by the present invention has advantages due to the use of the above-mentioned plate channel structure or heat exchanger core. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a top view of a specific embodiment of the plate channel structure within the first plate of the heat exchanger core provided in an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0025] Figure 3 This is a front view of a specific embodiment of the heat exchanger core provided in the embodiments of the present invention;

[0026] Figure 4 for Figure 3 Enlarged view of region B in the image;

[0027] Figure 5 This is a top view of a specific embodiment of the cooling medium flow channel in the second plate of the heat exchanger core provided in an embodiment of the present invention;

[0028] Figure 6 for Figure 5 A magnified view of region C in the image.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Heat exchange channel; 2. First strip rib; 3. First support rib; 4. Second strip rib; 5. First plate; 6. Second plate; 7. Side plate; 8. Third strip rib; 9. Second support rib; 10. Fourth strip rib. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] The plate channel structure provided in this embodiment is used for plate heat exchangers, specifically for printed circuit board heat exchangers.

[0036] like Figure 1 The diagram illustrates a specific implementation of the plate channel structure provided in this embodiment, comprising: a plate body having a plurality of heat exchange channels 1 of different lengths, and a plurality of first strip ribs 2 spaced apart within the heat exchange channels 1 along the medium flow direction. The angles of the first strip ribs 2 relative to the medium flow direction differ within the heat exchange channels 1 of different lengths; the longer the heat exchange channel 1, the smaller the angle of the first strip rib 2 within that heat exchange channel 1.

[0037] The plate channel structure provided in this embodiment can improve the uniformity of fluid distribution within different heat exchange channels 1, thereby improving the overall performance of the heat exchanger. Specifically, based on the different lengths of the heat exchange channels 1, first strip ribs 2 with different angles are provided on the plate body within different heat exchange channels 1. First strip ribs 2 with larger angles are provided in shorter heat exchange channels 1, while first strip ribs 2 with smaller angles are provided in longer heat exchange channels 1. By setting the first strip ribs 2, the resistance of the fluid within different heat exchange channels is changed, thereby improving the uniformity of fluid distribution within different heat exchange channels 1.

[0038] like Figure 1 , Figure 2 As shown, in the plate channel structure provided in this embodiment, a plurality of first support ribs 3 are provided in the heat exchange channel 1. The first support ribs 3 are arranged between two adjacent first strip ribs 2, and the length of the first support ribs 3 is less than that of the first strip ribs 2. That is, along the extension direction of the first strip ribs 2, the first support ribs 3 are arranged between two adjacent first strip ribs 2; by setting the first support ribs 3, the discontinuity of the first strip ribs 2 is achieved, thereby achieving the purpose of pressure equalization in the channel. In addition, as an alternative implementation, the first support ribs 3 can be omitted, or only the first strip ribs 2 can be intermittently arranged.

[0039] like Figure 1 , Figure 2 As shown, in the plate channel structure provided in this embodiment, the first support rib 3 is a circular rib, and the width of the circular rib can be set to be the same as the width of the first elongated rib, thereby facilitating fluid flow. Alternatively, as an alternative implementation, the first support rib 3 can also be other conventional structures, such as conical, triangular, or trapezoidal shapes, which are not limiting.

[0040] like Figure 1 As shown, in the plate channel structure provided in this embodiment, the inlet and outlet of the heat exchange channel 1 are located on the same side of the plate body. With this arrangement, different heat exchange channels 1 between the inlet and outlet have different lengths. Alternatively, as an alternative implementation, the inlet of the heat exchange channel 1 can be located on one side, and the outlet can be located on the side adjacent to the inlet. This arrangement also allows different heat exchange channels 1 to have different lengths.

[0041] like Figure 1 As shown, in the plate channel structure provided in this embodiment, a longer heat exchange channel 1 partially surrounds the outside of a shorter heat exchange channel 1 on the plate body, and several heat exchange channels 1 are arranged sequentially according to their length. This arrangement ensures a reasonable distribution of the heat exchange channels 1 on the plate body, allowing for a larger number of heat exchange channels 1 to be arranged on the plate body, enabling more fluid to pass through. Alternatively, as an alternative implementation, the heat exchange channels 1 can be arranged in other forms on the plate body, such as a symmetrical arrangement.

[0042] like Figure 1As shown, in the plate channel structure provided in this embodiment, the inlet and outlet of the heat exchange channel 1 are respectively provided with a plurality of second strip ribs 4, and the spacing of the second strip ribs 4 is smaller than the spacing of the first strip ribs 2. That is, a plurality of more densely packed second strip ribs 4 are respectively provided at the inlet and outlet of the heat exchange channel 1. The arrangement of the second strip ribs 4 provides a better stress structure for welding and improves the welding reliability of the inlet and outlet. In addition, as an alternative implementation, the second strip ribs 4 can be omitted, or only provided at the inlet, or only provided at the outlet, etc., and these are not limiting.

[0043] like Figure 3 , Figure 4 As shown, this embodiment also provides a heat exchanger core, including: a first plate 5, a second plate 6, and a side plate 7 stacked together, wherein the first plate 5 employs the aforementioned plate channel structure. The stacked plates sequentially form a heat exchange channel 1 and a cooling medium channel.

[0044] like Figure 5 , Figure 6 As shown, in the heat exchanger core provided in this embodiment, the second plate 6 has a cooling medium flow channel, and the cooling medium flow channel has a third strip rib 8. The third strip rib 8 is at least centrally aligned with the center of the first strip rib 2, and the angle of the third strip rib 8 relative to the flow direction of the cooling medium in the cooling medium flow channel is the same. That is, when the angle of the first strip rib 2 gradually changes, it is a rotational change of angle with the center point as the circle. This arrangement ensures that when the first plate 5 and the second plate 6 are stacked, the center of the third strip rib 8 is at least centrally aligned with the center of the first strip rib 2, thereby improving the stability of the connection between the two plates. In addition, as an alternative embodiment, the third strip rib 8 can be omitted.

[0045] like Figure 5 , Figure 6 As shown, in the heat exchanger core provided in this embodiment, the cooling medium flow channel also has a second support rib 9. Specifically, the shape of the second support rib 9 can be circular, the same as the shape of the first support rib 3. The second support rib 9 is disposed between two adjacent third strip ribs 8, and at least part of the second support rib 9 is directly opposite the first support rib 3. Specifically, in the portion where the cooling medium flow channel and the heat exchange flow channel 1 overlap, the second support rib 9 located in the cooling flow channel is directly opposite the first support rib 3 located in the heat exchange flow channel 1. This arrangement can improve the stability of the connection between the two plates. In addition, as an alternative embodiment, the second support rib 9 can be omitted.

[0046] like Figure 5 , Figure 6 As shown, in the heat exchanger core provided in this embodiment, the inlet and outlet of the cooling medium flow channel are respectively provided with a plurality of fourth strip ribs 10, and the spacing of the fourth strip ribs 10 is smaller than the spacing of the third strip ribs 8. That is, a plurality of more densely packed fourth strip ribs 10 are provided at the inlet and outlet of the cooling medium flow channel. The arrangement of the fourth strip ribs 10 provides a better stress structure for welding and improves the welding reliability of the inlet and outlet. In addition, as an alternative implementation, the fourth strip ribs 10 can be omitted, or only provided at the inlet, or only provided at the outlet, etc., and these are not limiting.

[0047] This embodiment also provides a printed circuit board type heat exchanger, including: the heat exchanger core mentioned above, which is used to form the core of the printed circuit board type heat exchanger.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A plate channel structure, characterized in that, include: The plate body has several heat exchange channels (1) of different lengths, and several first strip ribs (2) are arranged at intervals along the medium flow direction in the heat exchange channels (1). The angle of the first strip rib (2) relative to the direction of the medium flow is different in heat exchange channels (1) of different lengths. The longer the heat exchange channel (1), the smaller the angle of the first strip rib (2) in the heat exchange channel (1).

2. The plate channel structure according to claim 1, characterized in that, The heat exchange channel (1) is provided with a plurality of first support ribs (3), the first support ribs (3) are arranged between two adjacent first strip ribs (2), and the length of the first support ribs (3) is less than that of the first strip ribs (2).

3. The plate channel structure according to claim 2, characterized in that, The first support rib (3) is a circular rib.

4. The plate channel structure according to claim 1, characterized in that, The inlet and outlet of the heat exchange channel (1) are located on the same side of the plate body.

5. The plate channel structure according to claim 4, characterized in that, On the plate body, a longer heat exchange channel (1) partially surrounds the outside of a shorter heat exchange channel (1), and several heat exchange channels (1) are arranged in order of length.

6. The plate channel structure according to any one of claims 1-5, characterized in that, The inlet of the heat exchange channel (1) is provided with a plurality of second strip ribs (4), and the spacing of the second strip ribs (4) is smaller than the spacing of the first strip ribs (2). And / or, the outlet of the heat exchange channel (1) is provided with a plurality of second strip ribs (4), the spacing of the second strip ribs (4) being smaller than the spacing of the first strip ribs (2).

7. A heat exchanger core, characterized in that, include: A first plate (5), a second plate (6), and a side plate (7) are stacked together, wherein the first plate (5) adopts the plate channel structure according to any one of claims 1-6.

8. The heat exchanger core according to claim 7, characterized in that, The second plate (6) has a cooling medium flow channel, and the cooling medium flow channel has a third strip rib (8). The third strip rib (8) is at least at the center position directly opposite the center of the first strip rib (2). The third strip rib (8) has the same angle relative to the flow direction of the cooling medium in the cooling medium flow channel.

9. The heat exchanger core according to claim 8, characterized in that, The cooling medium flow channel also has a second support rib (9), which is disposed between two adjacent third strip ribs (8), and at least part of the second support rib (9) is directly opposite to the first support rib (3) in the heat exchange flow channel (1).

10. A printed circuit board heat exchanger, characterized in that, include: The plate channel structure according to any one of claims 1-6 or the heat exchanger core according to any one of claims 7-9.

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