Box-type laminated heat exchanger with supporting structure
By adding support structures and reinforcement plates to the open external circulation and inner channel heat exchange structure of the box-shaped stacked heat exchanger, the problem of collapse in the middle of the product during brazing is solved, and the strength enhancement and fastening effect is achieved.
Patent Information
- Application Number
- CN202421588439.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-07
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-07
AI Technical Summary
In the process of manufacturing a box-shaped stacked heat exchanger with an open external flow heat exchange structure, collapse is prone to occur in the middle of the product during the high-heat brazing process.
In the heat exchange structure with open external circulation and in the closed inner channel heat exchange structure with cross-border wall heat exchange, different support structures are added separately, and reinforcement plates are welded to enhance the overall strength.
By adding support structures and reinforcement plates, the problem of collapse in the middle of the product during brazing is effectively avoided, while the strength of the heat exchange plate surface is enhanced, and the product is tightened externally.
Smart Images
Figure CN222926032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heat exchange structure, in particular to a box-type laminated heat exchanger with a support structure. Background Art
[0002] A box-type laminated heat exchanger with a support structure is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery stacked in sequence, and the inclined surfaces that are in contact with each other form an external seal of a closed internal flow channel. Each box-shaped heat exchange plate has a heat exchange structure for wall-to-wall heat exchange. There are high backing plate structures at both ends of the open external flow channel heat exchange structure, and low backing plate structures at both ends of the closed internal flow channel heat exchange structure. The external flow channel heat exchange structure and the internal flow channel heat exchange structure are both located in the middle of each box-shaped heat exchange plate. For the heat exchange media for wall-to-wall heat exchange, one type of heat exchange medium flows through the open external flow channel heat exchange structure, while the other type of heat exchange medium passes through the through holes in the high backing plate and flows through the closed internal flow channels to form the internal flow channel heat exchange structure. The internal flow channel heat exchange structure and the external flow channel heat exchange structure perform cross-shaped wall-to-wall heat exchange.
[0003] The prior art of the box-type laminated heat exchanger with a support structure has been disclosed in the patent with the title "Box-shaped laminated heat exchanger with an open external flow channel heat exchange structure" and the patent application number 2022204815887. However, the disclosed box-type laminated heat exchanger has a defect. That is, during the manufacturing process of such a product as a box-shaped laminated heat exchanger with an open external flow channel heat exchange structure, when the total length of such a product is relatively long and its windward surface is relatively wide, during the brazing manufacturing process, the box-shaped heat exchange plates with inclined surfaces on the periphery stacked in sequence will sag to varying degrees layer by layer under the action of gravity in the middle part of the box-shaped heat exchange plates with inclined surfaces at the high brazing temperature, resulting in a collapse phenomenon in the middle part of the product.
[0004] In order to avoid the possible collapse in the middle part of the product during the high-temperature brazing process, in this box-type laminated heat exchanger, different support structures are respectively added at the positions adjacent and perpendicular to each other in both the external flow channel heat exchange structure with an open external flow and the closed internal flow channel heat exchange structure with a cross-shaped wall-to-wall heat exchange. Summary of the Invention
[0005] The main purpose of the utility model is to avoid the possible collapse in the middle part of the product during the manufacturing process of a box-shaped laminated heat exchanger with an open external flow channel heat exchange structure. Therefore, in the heat exchange structure with an open external flow and at the same time in the closed internal flow channel heat exchange structure with a cross-shaped wall-to-wall heat exchange, different support structures are respectively added at the positions adjacent and perpendicular to each other.
[0006] To strengthen the strength of the entire heat exchange surface of a box-shaped stacked heat exchanger with a support structure, reinforcing plates perpendicular to the heat exchange surface of the entire box-shaped stacked heat exchanger with a support structure will be welded to each support structure in the open external flow heat exchange structure.
[0007] Since there are through holes in the support structures in the open external flow outer channel heat exchange structure, bolts can be inserted into these through holes. Thus, such box-shaped stacked heat exchangers with support structures can also play a role in externally strengthening and fastening the box-shaped stacked heat exchangers with an open external flow heat exchange structure.
[0008] The purpose of the present utility model is achieved by the following scheme. The box-shaped stacked heat exchanger with a support structure is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery stacked in sequence, and the inclined surfaces that are in contact with each other form an external seal for the closed internal flow channel. Each box-shaped heat exchange plate has a heat exchange structure for partition heat exchange. There are high spacer structures at both ends of the open external flow channel heat exchange structure, and low spacer structures at both ends of the closed internal flow channel heat exchange structure. Both the external flow channel heat exchange structure and the internal flow channel heat exchange structure are located in the middle of each box-shaped heat exchange plate. For the heat exchange media for partition heat exchange, one type of heat exchange medium flows through the open external flow external flow channel heat exchange structure, while the other type of heat exchange medium passes through the through holes in the high spacers and flows through each closed internal flow channel to form an internal flow channel heat exchange structure. The internal flow channel heat exchange structure and the external flow channel heat exchange structure perform cross-shaped partition heat exchange. It is characterized in that in the heat exchange structure with an open external flow, and at the same time in its closed internal flow channel heat exchange structure for cross-shaped partition heat exchange, different support structures are respectively added at positions adjacent and perpendicular to each other.
[0009] There is a high support structure in the open external flow heat exchange structure.
[0010] There are through holes in the high support structures in the open external flow heat exchange structure. Bolts are inserted into these through holes, which can play a role in externally strengthening and fastening the box-shaped stacked heat exchangers with an open external flow heat exchange structure. Of course, there may also be no through holes in these high support structures.
[0011] The direction of the length of the inlet and outlet lines formed by the through holes in the high support structures is the same as the flow direction of the heat exchange medium B in the open external flow heat exchange structure.
[0012] The height of the high support structures in the open external flow heat exchange structure is the same as the height of the high spacers on both sides of the external flow channels.
[0013] There are low support structures in the internal flow channel heat exchange structure.
[0014] The height of the short support structure located in the internal flow channel heat exchange structure is the same as the height of the short pads on both sides of the internal flow channel.
[0015] The position of the short support structure in the internal flow channel heat exchange structure is exactly adjacent and vertically opposite to the position of the high support structure in the open external flow heat exchange structure. After brazing, an integral support structure is formed that is adjacent and vertically opposite and supports each other up and down.
[0016] The short support structure located in the internal flow channel heat exchange structure is composed of extruded hollow block segments. When arranging the extruded hollow block segments, the length direction of the line formed by their inlets and outlets is the same as the flow direction of heat exchange medium A in the internal flow channel.
[0017] The short support structure located in the internal flow channel heat exchange structure is composed of one to several slender solid blocks. The length direction of arranging the slender solid blocks is the same as the flow direction of heat exchange medium A in the internal flow channel.
[0018] The short support structure located in the internal flow channel heat exchange structure is composed of corrugated fins with a relatively thick plate thickness. The length direction of the inlet and outlet lines formed by arranging the corrugated fins in the internal flow channel is the same as the flow direction of heat exchange medium A in the internal flow channel.
[0019] The length of the short support structure located in the internal flow channel heat exchange structure is similar to the width of the high support structure located in the open external flow heat exchange structure.
[0020] The present utility model has the following advantages and positive effects:
[0021] In the process of manufacturing a product such as a box-shaped laminated heat exchanger with an open external flow heat exchange structure, in the heat exchange structure with an open external flow, and at the same time in its internal flow channel heat exchange structure with a cross-shaped partition heat exchange, different support structures are respectively added at their adjacent and vertically corresponding positions. Such support structures can avoid the possible collapse in the middle of the product during the high-temperature brazing process.
[0022] On each support structure in the open external flow heat exchange structure, a reinforcing plate perpendicular to the heat exchange plate surface of the entire box-shaped laminated heat exchanger with the support structure is welded. Thereby, the strength of the entire heat exchange plate surface of the box-shaped laminated heat exchanger with the support structure can be strengthened.
[0023] Through the through holes on the support structure in the open external flow heat exchange structure, it can also play a role in externally strengthening and fastening the box-shaped laminated heat exchanger with the open external flow heat exchange structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The present utility model will be further described below in conjunction with the drawings
[0025] Figure 1Front schematic view of a box-shaped laminated heat exchanger with a support structure in an open external circulation heat exchange structure
[0026] Figure 2 is Figure 1 E - E side view of
[0027] Figure 3 is Figure 1 F - F cross-sectional view of
[0028] Figure 4 is Figure 1 A - A cross-sectional view of
[0029] Figure 5 is Figure 1 B - B cross-sectional view of
[0030] Figure 6 is Figure 1 C - C cross-sectional view of
[0031] Figure 7 is Figure 1 D - D cross-sectional view of Detailed implementation manner
[0032] The following is further described in conjunction with embodiments and illustrations;
[0033] In all the figures, the identifiers 1, 1a, 1b, 1c, 1d, 1e, 1f, 1g all represent long bevel box-shaped heat exchange plates; the identifiers 2, 2a, 2b, 2c, 2d all represent heat exchange structures with open external circulation; the identifiers 3, 3a, 3b all represent high support structures in the heat exchange structures with open external circulation; the identifiers 4, 4a, 4b all represent through holes in the high support structures 3, 3a, 3b, and these through holes 4, 4a, 4b may also not exist; the identifiers 5, 5a, 5b, 5c, 5d, 5e all represent heat exchange structures in the internal flow channels; the identifiers 6, 6a, 6b all represent high backing plates on both sides of the heat exchange structures with open external circulation; the identifiers 7, 7a, 7b, 7c all represent short bevel box-shaped heat exchange plates; the identifiers 8, 8a, 8b, 8c, 8d all represent low backing plates on both sides of the heat exchange structures 5, 5a, 5b, 5c, 5d, 5e in the internal flow channels; the identifiers 9, 9a, 9b, 9c all represent the flow directions of heat exchange medium A in the heat exchange structures in the internal flow channels; the identifiers 10, 10a all represent that on each of the high backing plates 6, 6a, 6b in the heat exchange structures 2, 2a, 2b, 2c, 2d with open external circulation, there are reinforcing plates perpendicular to the heat exchange plate surfaces of the entire box-shaped stacked heat exchanger; the identifiers 11, 11a represent the welds between the reinforcing plates 10, 10a and each of the high backing plates 6, 6a, 6b; the identifiers 12, 12a, 12b, 12c, 12d, 12e, 12f, 12g all represent low support structures existing at appropriate positions in the heat exchange structures 5, 5a, 5b, 5c, 5d, 5e in the internal flow channels, where the identifiers 12, 12e represent low support structures composed of extruded hollow block segments existing at appropriate positions in the heat exchange structures 5, 5a, 5b, 5c, 5d, 5e in the internal flow channels, the identifiers 12a, 12b, 12c, 12f all represent low support structures composed of one or several slender solid bars existing at appropriate positions in the heat exchange structures 5, 5a, 5b, 5c, 5d, 5e in the internal flow channels, and the identifiers 12d, 12g all represent low support structures composed of corrugated fins with a relatively thick plate thickness existing at appropriate positions in the heat exchange structures 5, 5a, 5b, 5c, 5d, 5e in the internal flow channels; the identifiers 13, 13a all represent the flow directions of heat exchange medium B in the heat exchange structures with open external circulation.
[0034] In Figure 1 it, the left side shows the front partial appearance of the overall box-shaped stacked heat exchanger with the heat exchange structure with open external circulation and the high support structure 3, and the right side shows the front partial section of the overall box-shaped stacked heat exchanger with the heat exchange structure with open external circulation.
[0035] Combined Figure 1 and Figure 2As can be seen from the illustration, through holes 4 and 4a exist in each of the high support structures 3 and 3a. It can also be seen that in the internal flow channel heat exchange structures 5 and 5a, there are short support structures 12 in the form of extruded hollow block segments, there are also one to several short support structures 12a, 12b, and 12c in the form of slender solids, and there are also short support structures 12d composed of corrugated fins with a relatively thick plate thickness.
[0036] In Figure 1 and Figure 2 the illustration, it can also be seen that reinforcing plates 10 and 10a perpendicular to the heat exchange plate surface of the entire box-shaped stacked heat exchanger are welded 11 and 11a to the end faces of each of the high support structures 3 and 3a existing in each layer. It can also be considered that on the front and rear two end faces of each of the high support structures 3 and 3a, and on both sides of the through holes 4 and 4a in the high support structures 3 and 3a, reinforcing plates 10 and 10a can be welded 11 and 11a.
[0037] Combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 it can also be found that the positions of these short support structures 12, 12a, 12b, 12c, 12d, 12e, 12f, 12g in the internal flow channel exactly correspond to the positions of the high support structures 3, 3a, 3b in the open external flow heat exchange structure. Finally, after brazing, the high support structures 3, 3a, 3b and the short support structures 12, 12a, 12b, 12c, 12d, 12e, 12f, 12g form an overall support structure that exists adjacent and perpendicular to each other and supports each other up and down. Such a support structure can prevent the product from collapsing during the high-temperature brazing process when the material becomes soft and under the action of gravity.
[0038] Combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 it can also be found that in the same product, the heights of these short support structures 12, 12a, 12b, 12c, 12d, 12e, 12f, 12g are respectively the same as the heights of the short backing plates 8, 8a, 8b, 8c, 8d on both sides of the corresponding internal flow channel heat exchange structure.
[0039] From Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7It can be found that among these short support structures 12, 12a, 12b, 12c, 12d, 12e, 12f, 12g, the hollow block segment short support structures 12, 12e, the slender solid short support structures 12a, 12b, 12c, 12f, and the short support structures 12d, 12g composed of corrugated fins with a relatively thick plate thickness, the length direction of the line formed by their outlets and inlets is the same as the flow directions 9, 9a, 9b, 9c of the heat exchange medium A in the internal flow channel.
[0040] Since Figure 4 is Figure 1 the A - A section of Figure 5 is Figure 1 the B - B section of Figure 7 and Figure 1 is Figure 4 the D - D section of 5 so the projections of the box - shaped parts in
[0041] Since Figure 6 is Figure 1 the C - C section of Figure 6 so the projections of the box - shaped parts in
[0042] It can be seen from Figure 6 that the direction of the length of the inlet and outlet line formed by the through - holes 4b in the high support structure 3b is the same as the flow direction 13a of the heat exchange medium B in the heat exchange structure with an open external circulation.
[0043] When the short support structures in the internal flow channel are composed of extruded hollow block segments 12, 12e, the extruded hollow block segments 12, 12e are provided with a certain number of vertical partitions. Each vertical partition has a certain thickness, and at the formed inlets and outlets, they can be processed into a flared form to facilitate reducing the flow resistance.
[0044] When the short support structures in the internal flow channel are composed of one or several slender solids 12a, 12b, 12c, 12f, in order to reduce the flow resistance, these slender solid short support structures can be made into a sharp or smooth form that can reduce the flow resistance.
[0045] It can be seen from Figure 6 that the high support structure 3b in the open external circulation heat exchange structure 2d can be made into a sharp or smooth form that can reduce the flow resistance at both the head and tail ends in its length direction.
[0046] The heights of the high support structures 3, 3a, 3b are the same as the heights of the high base plates 6, 6a, 6b at both ends of the open external circulation heat exchange structures 2, 2a, 2b, 2c, 2d.
[0047] The through holes 4, 4a, 4b in the high support structures 3, 3a, 3b have through hole diameters suitable for inserting externally fastening bolts. Alternatively, the through holes 4, 4a, 4b can be made into threaded holes to facilitate screwing in bolts for stabilizing the box-shaped stacked heat exchanger.
[0048] Around the high support structures 3, 3a, 3b, there should be protrusions to prevent the open external flow heat exchange structures 2, 2a, 2b, 2c, 2d from being inserted into the upper and lower planes of the high support structures 3, 3a, 3b.
[0049] Around the low support structures 12, 12a, 12b, 12c, 12d, 12e, 12f, 12g, there should be protrusions to prevent the internal flow channel heat exchange structures 5, 5a, 5b, 5c, 5d, 5e from being inserted into the upper and lower planes of the low support structures.
Claims
1. A box-type stacked heat exchanger with a supporting structure, the box-type stacked heat exchanger with a supporting structure is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery, which are stacked in sequence, and the inclined surfaces that are tightly attached to each other form an external seal of a closed inner flow channel, and each box-type heat exchange plate has a heat exchange structure for inter-wall heat exchange, and there are high pad structures at both ends of the open outer flow channel heat exchange structure, and there are low pad structures at both ends of the closed inner flow channel heat exchange structure, and the outer flow channel heat exchange structure and the inner flow channel heat exchange structure are both located in the middle of each box-type heat exchange plate, and the heat exchange medium for heat exchange with the inter-wall, one type of heat exchange medium flows through the open outer flow channel heat exchange structure for external circulation, and the other type of heat exchange medium flows through the through holes in the high pad and flows through each closed inner flow channel to form an inner flow channel heat exchange structure, and the inner flow channel heat exchange structure and the outer flow channel heat exchange structure are cross-type inter-wall heat exchange, characterized in that, In the heat exchange structure with open external circulation and in the closed internal flow channel heat exchange structure with cross-type partition wall heat exchange, different supporting structures are added at adjacent vertical corresponding positions.
2. The box-type stacked heat exchanger with a support structure according to claim 1, characterized in that: There is a high support structure in the open external circulation heat exchange structure.
3. The box-type stacked heat exchanger with a support structure according to claim 1, characterized in that: A high support structure in an open external circulation heat exchange structure has through holes therein.
4. The box-type stacked heat exchanger with a support structure according to claim 1, characterized in that: A short support structure is provided in the inner flow channel heat exchange structure.
5. The box-type stacked heat exchanger with a support structure according to claim 1, characterized in that: The position of the short support structure in the inner flow channel heat exchange structure is adjacent to and vertically opposed to the position of the tall support structure in the open external circulation heat exchange structure, forming an overall support structure that is adjacent to and vertically opposed to each other and supports each other up and down.