Box-shaped laminated heat exchanger with partition plates in external circulation heat exchange structure
By adding partitions and support structures to the open external flow structure, the eddy current problem of heat exchange medium is solved, the heat exchange efficiency is improved, and the flow resistance is reduced, and the assembly process is simplified.
Patent Information
- Application Number
- CN202422535311.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
In the open external circulation structure of the existing box-shaped stacked heat exchanger, the heat exchange medium is prone to form eddy currents, increasing flow resistance and affecting the heat exchange efficiency.
Add partitions to the open external circulation structure, and set up corrugated structures and support structures on the partitions. Use welding seals between the partitions and the heat exchange plates to avoid eddy currents and enhance the flow diversion effect.
It effectively reduces eddy current in the open external circulation structure, reduces flow resistance, improves heat exchange efficiency, simplifies the assembly process, and reduces costs.
Smart Images
Figure CN223228847U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heat exchange structure, in particular to a box-shaped stacked heat exchanger with partitions in an external circulation heat exchange structure. Background Art
[0002] The box-shaped stacked heat exchanger with a partition in the external circulation heat exchange structure is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery, which are stacked together in sequence, and the inclined surfaces that are close to each other constitute the external seal of the closed inner flow channel. Each box-type heat exchange plate is provided with a heat exchange structure for partition heat exchange. There are high pad structures at both ends of the open outer flow channel heat exchange structure, and low pad structures at both ends of the closed inner flow channel heat exchange structure. 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. With respect to the heat exchange medium for partition heat exchange, one type of heat exchange medium flows through the open outer flow channel heat exchange structure, while the other type of heat exchange medium flows through the through holes in the high pad and flows through each closed inner flow channel, forming an inner flow channel heat exchange structure. The inner flow channel heat exchange structure and the outer flow channel heat exchange structure are in a cross-type partition heat exchange.
[0003] The prior art of box-shaped stacked heat exchangers with partitions in an external circulation heat exchange structure has been disclosed in a patent entitled "Box-shaped stacked heat exchanger with open external circulation heat exchange structure" and patent application number 2022204815887. However, the disclosed box-shaped stacked heat exchanger has a defect, that is, in the box-shaped stacked heat exchanger with an open external circulation heat exchange structure, the heat exchange medium flowing through the open external circulation heat exchange structure is generally a gaseous heat exchange medium or a liquid heat exchange medium. When such a heat exchange medium flows through this type of open external circulation heat exchange structure, it will form vortices in the concave box-shaped space flowing through the inclined surface. Such vortices will increase the flow resistance of the heat exchange medium, thereby affecting the heat exchange efficiency of the open external circulation heat exchange structure. Summary of the Invention
[0004] The main purpose of the utility model is to reduce the heat exchange medium flowing through the open external circulation heat exchange structure and eliminate the eddy current phenomenon, thereby improving the heat exchange efficiency of this type of box-shaped stacked heat exchanger with an open external circulation heat exchange structure.
[0005] The purpose of the present invention is to achieve the following solution: a box-shaped stacked heat exchanger with a partition in an external circulation heat exchange structure is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery, which are sequentially stacked together, and the inclined surfaces of each box-shaped heat exchange plate and each other are tightly attached to form an external seal of a closed inner flow channel. Each box-shaped heat exchange plate has a heat exchange structure for performing wall heat exchange, a high pad structure is provided at both ends of the open outer flow channel heat exchange structure, and a low pad structure is provided at both ends of the closed inner flow channel heat exchange structure. The outer flow channel heat exchange structure and the inner flow channel heat exchange structure are both located in the middle of each box-shaped heat exchange plate, relative to each other. The heat exchange medium of the partition heat exchange, one type of heat exchange medium flows through the outer flow channel heat exchange structure with open external circulation, while the other type of heat exchange medium flows through the through holes in the high pad and flows through each closed inner flow channel, forming an inner flow channel heat exchange structure. The inner flow channel heat exchange structure and the outer flow channel heat exchange structure are cross-type partition heat exchange, which is characterized in that a partition is added at the lower part of the heat exchange structure with open external circulation, and the partition is laid flat on the box-shaped space composed of the inward concave inclined surface, so that the heat exchange medium flowing through the heat exchange structure with open external circulation can flow smoothly and prevent the generation of vortex phenomenon.
[0006] In order to enhance the strength of the partition itself, the partition has a corrugated structure.
[0007] In order to support the partition, a supporting structure composed of fins is provided below the partition in the box-shaped space formed by the inclined concave surface.
[0008] In order to support the partition, a supporting structure composed of pads is provided below the partition in the box-shaped space formed by the inward concave slope.
[0009] In order to prevent the heat exchange medium from flowing into the box-shaped space formed by the concave slope, there are steps on the outer periphery of the high pad to facilitate welding and sealing of the partition.
[0010] In order to prevent the heat exchange medium from flowing into the box-shaped space formed by the concave slope, a welding sealing structure is provided around the contact area between the partition plate and the high pad.
[0011] In order to prevent the heat exchange medium from flowing into the box-shaped space formed by the inward concave slope, a flow guide structure is provided around the partition.
[0012] In order to strengthen the partition and prevent the heat exchange medium from flowing into the box-shaped space formed by the concave slope, the periphery of the partition will be welded and sealed with the horizontal flange at the top of the inclined surface of the box-shaped heat exchange plate.
[0013] The utility model has the following advantages and positive effects:
[0014] Adding a partition in the heat exchange structure with an open external circulation can avoid and eliminate the eddy current phenomenon of the heat exchange medium flowing through the heat exchange structure with an open external circulation, thereby reducing the flow resistance of the heat exchange medium flowing through such heat exchange structure with an open external circulation, making such heat exchange structure more efficient and practical.
[0015] The partition has a guiding effect on the heat exchange medium flowing through the open external circulation heat exchange structure.
[0016] Since the periphery of the partition will be welded and sealed with the horizontal flange at the top of the slope, and the partition will be welded and sealed with the periphery in contact with the high pad, and the partition has a diversion structure and diversion function, it can not only enhance the welding strength and stability of the high pad, but also avoid and prevent the heat exchange medium from flowing into the box-shaped space formed by the concave slope, thereby reducing the flow noise of the heat exchange medium flowing through the open external circulation heat exchange structure.
[0017] This type of new heat exchange structure with partitions and open external circulation, and its new box-type stacked heat exchanger, no longer require various seals for welding and sealing, can greatly facilitate the assembly process and reduce product weight and cost. It can replace most of the current aluminum plate-fin heat exchangers with seals that are manufactured by vacuum welding. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] Figure 1 Front view of a box-type stacked heat exchanger with partitions in an open external circulation heat exchange structure
[0020] Figure 2 for Figure 1 EE profile
[0021] Figure 3 for Figure 1 DD cross-section diagram
[0022] Figure 4 for Figure 1 CC cross-section diagram
[0023] Figure 5 for Figure 1 BB cross-section
[0024] Figure 6 for Figure 1 AA cross-section DETAILED DESCRIPTION
[0025] The following is further explained with reference to the embodiments and figures;
[0026] In all the figures, the symbols 1, 1a, 1b, and 1c represent long bevel box-type heat exchange plates; the symbols 2, 2a, 2b, 2c, 2d, and 2e represent open external circulation heat exchange structures, and also represent open external circulation heat exchange structures on the partitions 5, 5a, 5b, 5c and 15, 15a. Figure 22b and 2c in the figure represent a certain special-shaped open external circulation heat exchange structure, the purpose of which is to increase the heat exchange area and heat exchange efficiency; the symbols 3, 3a, and 3b all indicate the flow direction of the heat exchange medium A for wall heat exchange in the inner flow channel; the symbols 4, 4a, and 4b all indicate the fins supporting the partitions, and also indicate the fins supporting the partitions 5, 5a, 5b, and 5c in the inclined concave box-shaped space composed of short inclined box-shaped heat exchange plates 6, 6a, 6b, and 6c, and at the bottom of the partitions 5, 5a, 5b, and 5c; the symbols 5, 5a, 5b, and 5c all indicate partitions, and also indicate the partitions laid flat on the box-shaped space composed of the inclined concave, and at the bottom of the open external circulation heat exchange structure 2, 2a, 2b, 2c, 2d, and 2e. The middle mark 5 indicates that the partition is shorter and is laid between the high pads 8, 8a, 8b, 8c, 8d, and 8e. The marks 5a and 5c indicate that the high pads 8, 8a, 8b, 8c, 8d, and 8e pass through the partitions 5a and 5c, and indicate that the partitions 5a and 5c will be welded with the horizontal flanges on the tops of the short bevel box-type heat exchange plates 6, 6a, 6b, and 6c. It also indicates that there are guide structures 10, 10a, 10b, and 10c around the partitions 5a and 5c. The partition 5b indicates that the partition may not contact the horizontal flanges on the tops of the short bevel box-type heat exchange plates 6, 6a, 6b, and 6c, and there will be a gap h between the partition 5b and the horizontal flanges on the tops of the short bevel box-type heat exchange plates 6, 6a, 6b, and 6c; the marks 6, 6a, 6b, and 6c All of them represent short bevel box-type heat exchange plates, and also represent short bevel box-type heat exchange plates stacked on long bevel box-type heat exchange plates 1, 1a, 1b, 1c, and sealed together with the bevel of long bevel box-type heat exchange plates 1, 1a, 1b, 1c to form an inner flow channel; Marks 7 and 7a all represent high pads 8, 8a, 8b, 8c, 8d, 8e with steps on the outer periphery for welding and sealing the partitions 5a, 5b, 5c, 15, 15a; Marks 8, 8a, 8b, 8c, 8d, 8e all represent high pads with through holes 17, 17a on both sides of the open external circulation heat exchange structure 3, 3a, 3b; Marks 9, 9a, 9b, 9c represent the gaps between the partitions 5a, 5c and 15a and the high pads 8, 8a, 8b, 8c, 8d, 8e are in contact with each other and have a welded sealing structure around them; the symbols 10, 10a, 10b, and 10c all indicate the flow-guiding structure around the partitions 5a, 5c, 15, and 15a; the symbols 11 and 11a both indicate the short pads in the inner flow channel; the symbol 12 indicates the flow direction of the heat exchange medium A flowing in the inner channels 17 and 17a of the high pads 8, 8a, 8b, 8c, 8d, and 8e; the symbols 13, 13a, and 13b all indicate the heat exchange structure of the inner flow channel; the symbols 14, 14a, 14b, and 14c all indicate the pads, which also indicate the pads supporting the partitions 5, 5a, 5b, and 5c in the inclined concave box-shaped space formed by the short inclined box-shaped heat exchange plates 6, 6a, 6b, and 6c, and at the lower part of the partitions 5, 5a, 5b, and 5c;Reference numerals 15 and 15a denote baffles with a corrugated reinforcement structure. Reference numeral 15 indicates a single-layered baffle with a corrugated reinforcement structure, while reference numeral 15a denotes a double-layered baffle with a corrugated reinforcement structure. The bottom corrugated baffle is provided to strengthen the baffle. The flat baffle immediately above it is welded to the bottom corrugated baffle and welded to the open external circulation heat exchange structure 3, 3a, 3b above baffles 5, 5a, 5b, 15, 15a over the largest area. Reference numerals 16 and 16a both denote the flow direction of heat exchange medium B undergoing inter-wall heat exchange in the open external circulation heat exchange structure 3, 3a, 3b. Reference numerals 17 and 17a both denote the inner channels in high pads 8, 8a, 8b, 8c, 8d, 8e. Figure 2 The mark 18 in the figure indicates the reinforcing brazing sheet on the open external circulation heat exchange structure 2, 2a, 2b, 2c, 2d, 2e and below the bottom plane of the long inclined box-type heat exchange plate 1, 1a, 1b, 1c. The significance of the reinforcing brazing sheet 18 is to strengthen Figure 2 The structural strength of the open external circulation heat exchange structure 2b is shown.
[0027] exist Figure 1 In the figure, the left side shows the partial front view appearance of the integral box-type stacked heat exchanger with a partition and an open external circulation heat exchange structure, and the right side shows the partial front view cross-section of the integral box-type stacked heat exchanger with a partition and an open external circulation heat exchange structure.
[0028] Combine Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 It can be seen that above the partitions 5, 5a, 5b, 5c and 15, 15a, there are heat exchange structures 3, 3a, 3b with open external flow channels and flow directions 16 of the heat exchange medium B. Therefore, it can be found that the heat exchange medium B, which forms a cross-type heat exchange structure with the heat exchange medium A, will flow smoothly over the partitions 5, 5a, 5b, 5c, 15, 15a. Due to the presence of the partitions 5, 5a, 5b, 5c, 15, 15a, the heat exchange medium B will no longer be drawn into the concave space with the short inclined surface, nor will it cause eddy currents in the heat exchange medium B.
[0029] Figure 3 for Figure 1 The DD section is also a section of all the inner flow channel heat exchange structures 13, 13a, 13b, which clearly shows the flow direction 3, 3a, 3b of the heat exchange medium A in the inner flow channel heat exchange structures 13, 13a, 13b, and also shows that there are short pads 11, 11a on both sides of the inner flow channel heat exchange structures 13, 13a, 13b. Figure 3 yes Figure 1 DD profile, Figure 3 The projection of the box-shaped part in FIG. 1 should be shown as having long inclined box-shaped heat exchange plates 1, 1a, 1b, 1c.
[0030] Figure 4 for Figure 1 The CC section is also a section of the space below all the partitions 5, 5a, 5b, 5c. It clearly shows that no heat exchange medium B flows under the partitions 5, 5a, 5b, 5c, 15, 15a. In the space below the partitions 5, 5a, 5b, 5c, there are fins 4, 4a, 4b for supporting the partitions, and there are spacers 14, 14a, 14b, 14c for supporting the partitions 5, 5a, 5b, 5c, or there are corrugated partitions 15, 15a. It also shows that there are high pads 8c at both ends of the partition 5, or there are high pads 8, 8a, 8b, 8c, 8e passing through the partitions 5a, 5b, 5c, 15, 15a. Figure 4 yes Figure 1 CC profile, Figure 4 The box-shaped part projection in FIG should be shown as having short inclined box-shaped heat exchange plates 6, 6a, 6b, 6c.
[0031] Figure 5 for Figure 1 The BB section is also a section of all the open new external flow channel heat exchange structures 2, 2a, 2b, 2c, 2d, and 2e. It clearly shows the flow direction 16, 16a of the heat exchange medium B in the external flow channel heat exchange structure 3, 3a, and 3b. Due to the presence of the partitions 5, 5a, 5b, 5c, 15, and 15a, it can also be considered that the heat exchange medium B can flow smoothly through the heat exchange structure 3, 3a, and 3b with open external flow channel. It also shows that there are high pads 8, 8a, 8b, 8c, 8d, and 8e on both sides of the open new external flow channel heat exchange structure 3, 3a, and 3b. Figure 5 yes Figure 1 BB profile, Figure 5 The box-shaped part projection in FIG should be shown as having short inclined box-shaped heat exchange plates 6, 6a, 6b, 6c.
[0032] Figure 6 for Figure 1 The AA section is also a section of the space below all the partitions 5, 5a, 5b, 5c. It clearly shows that there is no heat exchange medium B flowing under the partitions 5, 5a, 5b, 5c, 15, 15a. There are several pads 14, 14a, 14b, 14c in the space below the partitions 5, 5a, 5b, 5c for supporting the partitions 5, 5a, 5b, 5c. Figure 6 yes Figure 1 AA section, Figure 6The box-shaped part projection in FIG should be shown as having short inclined box-shaped heat exchange plates 6, 6a, 6b, 6c.
[0033] Finally, it should be noted that the bottom surfaces of the various beveled surfaces that form the beveled seal around the closed internal flow channel will naturally sink during brazing due to the melting of the brazing filler metal. This is especially true for the short beveled box-type heat exchange plates labeled 6, 6a, 6b, and 6c. Due to the constraints of the beveled surfaces, the bottom surfaces of these short beveled box-type heat exchange plates will no longer sink after sinking to a certain point, remaining naturally and stably there. This also creates a stable and naturally existing plate spacing of a certain height between the long beveled box-type heat exchange plates labeled 1, 1a, 1b, and 1c. The value of this plate spacing is related to the brazing rate of the brazing filler metal on each heat exchange plate. Furthermore, since the closed internal flow channel heat exchange structures of the box-type stacked heat exchanger with partitions in the external circulation heat exchange structure only have an inlet and an outlet, while ensuring the brazing seal around the beveled surfaces of each closed internal flow channel, in order to reduce costs, it is considered that the short spacers in the internal flow channels labeled 11 and 11a can also be eliminated.
Claims
1. A box-shaped stacked heat exchanger with a partition in an external circulation heat exchange structure is composed of a plurality of box-shaped heat exchange plates with inclined surfaces on the periphery stacked together in sequence, and the inclined surfaces that are closely attached to each other form an external seal of a closed inner flow channel. Each box-shaped heat exchange plate has a heat exchange structure for performing partition heat exchange. There are high pad structures at both ends of the open outer flow channel heat exchange structure, and low pad structures at both ends of the closed inner flow channel heat exchange structure. The outer flow channel heat exchange structure and the inner flow channel heat exchange structure are both located in the middle of each box-shaped heat exchange plate. For the heat exchange medium for relative partition heat exchange, one type of heat exchange medium flows through the open outer flow channel heat exchange structure, while the other type of heat exchange medium flows through the through holes in the high pads and flows through each closed inner flow channel, forming an inner flow channel heat exchange structure. The inner flow channel heat exchange structure and the outer flow channel heat exchange structure are in a cross-type partition heat exchange, which is characterized in that: A partition is added to the lower part of the open external circulation heat exchange structure. The partition is laid flat on the box-shaped space composed of the concave inclined surface, so that the heat exchange medium flowing through the open external circulation heat exchange structure can flow smoothly and prevent the generation of eddy currents.
2. The box-shaped stacked heat exchanger according to claim 1, characterized in that: The partition has a corrugated structure.
3. The box-shaped stacked heat exchanger according to claim 1, characterized in that: In the box-shaped space formed by the inward concave slope, under the partition, there is a supporting structure composed of fins.
4. The box-shaped stacked heat exchanger according to claim 1, characterized in that: In the box-shaped space formed by the inward concave slope, there is a supporting structure composed of pads under the partition.
5. The box-shaped stacked heat exchanger according to claim 1, characterized in that: There are steps on the outer periphery of the high pad to facilitate welding and sealing of the partition.
6. The box-shaped stacked heat exchanger according to claim 1, characterized in that: There is a welded sealing structure around the contact area between the partition and the high pad.
7. The box-shaped stacked heat exchanger according to claim 1, characterized in that: There is a flow guide structure around the partition.
8. The box-shaped stacked heat exchanger according to claim 1, characterized in that: The periphery of the partition will be welded and sealed with the horizontal flange at the top of the inclined surface of the box-shaped heat exchange plate.