Box-type laminated heat exchanger with novel inner flow channel heat exchange structure

Abstract

The box-type stacked heat exchanger with the novel inner flow channel heat exchange structure is formed by sequentially stacking a plurality of box-type heat exchange plates with slopes on the peripheries, high base plate structures are arranged at the two ends of an open type outer flow channel heat exchange structure, short base plate structures are arranged at the two ends of a closed type inner flow channel heat exchange structure, and heat exchange media for exchanging heat relative to dividing walls are arranged on the inner flow channel heat exchange structure. Wherein one kind of heat exchange medium flows through the open external flow channel heat exchange structure, the other kind of heat exchange medium flows through the closed internal flow channels through the through holes in the high base plate, so that an internal flow channel heat exchange structure is formed, and the internal flow channel heat exchange structure and the external flow channel heat exchange structure exchange heat in a cross-shaped dividing wall mode. Various high base plate structures on the two sides of the open type external circulation heat exchange structure are changed, heat exchange structures of inner flow channels of the open type external circulation heat exchange structure are changed accordingly, heat exchange media flowing through the inner flow channels have different flow paths, different flow channels have different flow directions, and various different heat exchange media can exist in the inner flow channels at the same time.

Description

Technical Field

[0001] The utility model relates to a heat exchange structure, in particular to a box-type stacked heat exchanger with a novel inner flow channel heat exchange structure. Background Art

[0002] The box-type stacked heat exchanger with a new internal flow channel heat exchange structure is composed of multiple 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 constitute the external seal of the closed internal flow channel. Each box-type heat exchange plate has a heat exchange structure for partition heat exchange. There are high pad structures at both ends of the open external flow channel heat exchange structure, and low pad 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-type heat exchange plate. Relative to the heat exchange medium for partition heat exchange, one type of heat exchange medium flows through the open external flow channel heat exchange structure, and the other type of heat exchange medium flows through the through holes in the high pad 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 are cross-type partition heat exchange.

[0003] The prior art of a box-type stacked heat exchanger with a novel internal flow channel heat exchange structure has been disclosed in a patent entitled "Box-type stacked heat exchanger with an open external circulation heat exchange structure" and patent application number 2022204815887. In the disclosed box-type stacked heat exchanger, the heat exchange structure of its internal flow channel can only realize a multi-channel single-flow heat exchange structure, and its defect is that it cannot realize a single-channel multi-flow and multi-channel multi-flow heat exchange structure in its internal flow channel, nor can it realize a heat exchange structure in which multiple heat exchange media coexist in its internal flow channel. Summary of the Invention

[0004] The main purpose of the present utility model is to further develop the application of box-shaped stacked heat exchangers with an open external circulation heat exchange structure, and to utilize various high pad structure changes on both sides of the open external circulation heat exchange structure to change the box-shaped stacked heat exchanger with an open external circulation heat exchange structure into a heat exchange structure in which the heat exchange structure of its inner flow channel has a single-channel multi-flow and multi-channel multi-flow heat exchange mode, and the inner flow channel can also be changed into a heat exchange structure that can realize the coexistence of multiple heat exchange media, and at the same time meet the heat exchange structure that can mutually perform cross-wall heat exchange with the heat exchange medium in the open external circulation heat exchange structure.

[0005] The purpose of the present utility model is to adopt the following scheme to achieve, with a novel inner flow channel heat exchange structure of the box-type stacked heat exchanger 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 of each box-type heat exchange plate and each other are tightly attached to form a closed inner flow channel for external sealing, each box-type heat exchange plate has a heat exchange structure for partition 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-type heat exchange plate, relative to the partition heat exchange. Medium, 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 in a cross-type partition heat exchange. It is characterized in that the various high pad structures on both sides of the open external circulation heat exchange structure are changed, and the heat exchange structure of its inner flow channel is changed accordingly, so that the heat exchange medium flowing through the inner flow channel has different processes, different flow channels and different flow directions, and a variety of different heat exchange media can exist in the inner flow channel at the same time.

[0006] By changing the blocking high pad structure and the high pad structure with through holes on both sides of the open external circulation heat exchange structure, the heat exchange medium flowing through the inner flow channel has a multi-channel and multi-flow inner flow channel heat exchange structure and different heat exchange medium flow directions.

[0007] By changing the blocking high pad structure and the high pad structure with through holes on both sides of the open external circulation heat exchange structure, the heat exchange medium flowing through the inner flow channel can have a single-flow channel and multi-flow inner flow channel heat exchange structure and different heat exchange medium flow directions.

[0008] By changing the blocking high pad structure and the high pad structure with through holes on both sides of the open external circulation heat exchange structure, the heat exchange medium flowing through the inner flow channel can have multi-flow channel and single-flow inner flow channel heat exchange structures and different heat exchange medium flow directions.

[0009] By changing the blocking high pad structure, the high pad structure with through holes and the special-shaped high pad structure on both sides of the open external circulation heat exchange structure, multiple heat exchange media can exist simultaneously in the internal flow channel and have different heat exchange medium flow directions.

[0010] The utility model has the following advantages and positive effects:

[0011] By only changing the various high pad structures on both sides of the open external circulation heat exchange structure, the box-shaped stacked heat exchanger with an open external circulation heat exchange structure can be expanded and changed into a box-shaped stacked heat exchanger with a heat exchange structure of its internal flow channel having multiple flow channels and multiple processes.

[0012] By only changing the various high pad structures on both sides of the open external circulation heat exchange structure, the box-shaped stacked heat exchanger with an open external circulation heat exchange structure can be expanded and changed into a box-shaped stacked heat exchanger with a single flow channel and a multi-flow flow channel heat exchange structure in its internal flow channel.

[0013] By only changing the various high pad structures on both sides of the open external circulation heat exchange structure, the box-shaped stacked heat exchanger with an open external circulation heat exchange structure can be expanded and changed into a box-shaped stacked heat exchanger with a heat exchange structure of multiple flow channels and a single flow channel in its internal flow channel.

[0014] By only changing the various high pad structures on both sides of the open external circulation heat exchange structure, the box-shaped stacked heat exchanger with an open external circulation heat exchange structure can be expanded and changed into an internal flow channel heat exchange structure in which multiple heat exchange media can exist simultaneously in the internal flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 Front cross-sectional view of a box-shaped stacked heat exchanger with an open external circulation heat exchange structure and a single-channel six-flow process in its internal flow channel

[0017] Figure 2 Figure 1 AA section view

[0018] Figure 3 Figure 1 BB cross-sectional view

[0019] Figure 4 Figure 1 CC cross-sectional view

[0020] Figure 5 Front view of a cascade heat exchanger with an open external circulation heat exchange structure and two channels and three flows in its internal flow channel

[0021] Figure 6 Figure 5 DD cross-sectional view

[0022] Figure 7 Figure 5 EE cross-sectional view

[0023] Figure 8 A front cross-sectional view of an open external circulation heat exchange structure in which three heat exchange media can coexist and flow in its internal flow channel, and at the same time, the heat exchange medium in the open external circulation heat exchange structure can be exchanged with each other in a cross-wall manner. DETAILED DESCRIPTION

[0024] The following is further explained with reference to the embodiments and figures;

[0025] In all illustrations, symbols 1, 1a, 1b, 1c include Figure 8 1d in the figure indicates the short pad structure at both ends of the inner channel heat exchange structure. Marks 2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2j, 2k, and 2m indicate the flow direction of the heat exchange medium A in the inner channel in a single channel with six processes. Marks 3 and 3a include Figure 8 3b in the figure indicates the internal channel heat exchange structure, and 4 and 4a include Figure 8 4b in the figure indicates the upper cover, and 5, 5a, 5b, 5c, 5d and 5e include Figure 8 5f in FIG1 represent the barrier type high pad structure adjacent to the open external circulation heat exchange structure 8, 8a, 8b, 8c, 8d, 8e, wherein the symbols 5a and Figure 2 The identifier 5d in , and Figure 3 5e and Figure 8 5f in the figure are all solid blocking high pad structures, and Figure 1 and Figure 2 The identifiers 5, 5b, and 5c include Figure 8 The barrier type high pad structure 5g is designed to reduce the weight of the solid barrier type high pad structure, and is specially designed to have lightening holes with different cross-sectional structures. These lightening holes with different cross-sectional structures in the barrier type high pad structure can also play the role of external fastening for the entire box-type stacked heat exchanger. Marks 6, 6a, 6b, 6c, 6d, and 6e include Figure 8 6f, 6g in the figure represent the open external circulation heat exchange structure 8, 8a, 8b, 8c, 8d including Figure 8 8e in the adjacent and with a high pad structure with through holes, marking 7, 7a includes Figure 8 7b in the figure indicates the lower cover, and the symbols 8, 8a, 8b, 8c, and 8d include Figure 8 8e in the figure represent open external circulation heat exchange structures, and symbols 9, 9a, and 9b include Figure 8 9c in the figure represent short bevel box type heat exchange plates, and 10, 10a, and Figure 8 10b in the figure indicates a long bevel box type heat exchange plate, and the symbols 11, 11a, 11b, 11c, 11d, and 11e indicate the flow direction of the heat exchange medium B in the open external circulation heat exchange structure, and the symbols 12, 12a, 12b, 12c, and 12d indicate the flow direction of the heat exchange medium B in the open external circulation heat exchange structure. Figure 8 In the flow direction of the heat exchange medium C in the inner channel wall, the heat exchange medium C is Figure 8 The heat exchange mode is a three-channel single-flow mode, and the symbols 13, 13a, 13b, 13c, and 13d all represent Figure 8 In the flow direction of the heat exchange medium D in the inner channel wall, the heat exchange medium D is Figure 8 The heat exchange mode of single flow channel and three processes is shown in the figure. The symbols 14 and 14a both indicate Figure 8 In the figure, the special-shaped high pad structure allows the heat exchange medium D to flow into and out of the inner flow channel. The symbols 15, 15a, 135, 15c, and 15d all represent Figure 8 In the flow direction of the heat exchange medium E in the inner channel wall, the heat exchange medium E is Figure 8 The heat exchange mode is a three-channel single-flow mode.

[0026] exist Figure 1 and Figure 2 By utilizing and transforming the blocking high pad structures 5, 5a, 5b, 5c, 5d adjacent to the open external circulation heat exchange structures 8, 8a, 8b, and utilizing the high pad structures 6, 6a, 6b with through holes adjacent to the open external circulation heat exchange structures 8, 8a, 8b, the heat exchange medium A flowing through the inner flow channel 3 can form a single-channel six-flow heat exchange structure and flow directions 2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2j, 2k in the box-shaped stacked heat exchanger with the open external circulation heat exchange structures 8, 8a, 8b.

[0027] Figure 3 Expressed Figure 1 The BB profile, Figure 3 It can be found that on the right side of the open external circulation heat exchange structure 8c, there is a solid blocking type high pad structure 5e, and on the left side of the open external circulation heat exchange structure 8c, there is a high pad structure 6c with through holes. Figure 3 The heat exchange medium B flows through the open external circulation heat exchange structure 8c, and the flow direction of the heat exchange medium B is 11b, 11c. Figure 3 yes Figure 1 BB profile, so Figure 3 The box-shaped part projection in FIG should appear to have short inclined box-shaped heat exchange plates 9a.

[0028] Figure 4 Expressed Figure 1 The CC section, in Figure 4 It can be found that there are short pad structures 1b and 1c on both sides of the inner flow channel heat exchange structure 3a, and the flow direction 2m of the heat exchange medium A flowing through the inner flow channel heat exchange structure 3a is marked. Figure 4 yes Figure 1 The CC profile, so Figure 4 The projection of the box-shaped part in FIG should appear to have long inclined box-shaped heat exchange plates 10 a.

[0029] Figure 5 and Figure 7It is commonly shown that various barrier-type high pad structures and high pad structures with through holes are also utilized and transformed to enable a box-shaped stacked heat exchanger with an open external circulation heat exchange structure to form a double-channel three-flow heat exchange mode in its internal flow channel.

[0030] Figure 6 Expressed Figure 5 DD profile, in Figure 6 It can be found that on both sides of the open external circulation heat exchange structure 8d, there are high pad structures 6d and 6e with through holes. Figure 6 The heat exchange medium B flows through the open external circulation heat exchange structure 8d, and the flow direction of the heat exchange medium B is 11d and 11e. Figure 6 yes Figure 5 DD profile, so Figure 6 The box-shaped part projection in FIG should appear to have short inclined box-shaped heat exchange plates 9b.

[0031] pass Figure 1 and Figure 5 The box-shaped stacked heat exchanger with an open external circulation heat exchange structure can change its various high pad structures so that the heat exchange structure of its internal flow channel has various modes of N flow channels and n flow box-shaped stacked heat exchangers.

[0032] exist Figure 8 In the figure, it is shown that in the internal flow channel heat exchange structure 3b, three heat exchange media C, D, and E exist simultaneously in the same box-shaped stacked heat exchanger with an open external circulation heat exchange structure 8e. These three heat exchange media C, D, and E simultaneously exchange heat with the open external circulation heat exchange structure 8e in a cross-wall manner.

[0033] exist Figure 8 In the figure, the heat exchange medium C located in the inner flow channel heat exchange structure 3b enters the inner flow channel heat exchange structure 3b from the right side of the upper cover plate 4b as indicated by 12d according to the flow direction indicated by the marks 12, 12a, 12b, 12c, and 12d, and finally flows out of the inner flow channel heat exchange structure 3b from the left side of the upper cover plate 4b as indicated by 12 according to the three-channel single-flow heat exchange mode.

[0034] The heat exchange medium D located in the inner flow channel heat exchange structure 3b enters the inner flow channel heat exchange structure 3b from the special-shaped high pad structure 14 on the right side according to the flow direction indicated by the marks 13, 13a, 13b, 13c, and 13d, and finally flows out of the inner flow channel heat exchange structure 3b from the special-shaped high pad structure 14a on the left side according to the single-channel three-process heat exchange mode.

[0035] The heat exchange medium E located in the inner flow channel heat exchange structure 3b enters the inner flow channel heat exchange structure 3b from the left side of the lower cover plate 7b at the mark 15 according to the flow direction indicated by the marks 15, 15a, 15b, 15c, and 15d, and finally flows out of the inner flow channel heat exchange structure 3b from the right side of the lower cover plate 7b at the mark 15d according to the three-flow channel single-flow heat exchange mode.

[0036] pass Figure 8 It can be found that in the box-type stacked heat exchanger with a new internal flow channel heat exchange structure, different high pad structures can be used to change the box-type stacked heat exchanger with an open external circulation heat exchange structure into a box-type stacked heat exchanger that can accommodate N types of heat exchange media in the internal flow channel of the same box-type stacked heat exchanger, independently of each other, in heat exchange modes such as multi-channel and multi-flow, single-channel and multi-flow, multi-channel and single-flow, and so on, and perform cross-wall heat exchange with the heat exchange media in the adjacent and simultaneously existing open external circulation heat exchange structure.

[0037] Finally, it should be noted that the bottom planes of the various slopes that constitute the bevel seal around the inner flow channel will naturally sink during brazing due to the melting of the brazing material, especially the short bevel box-type heat exchange plates marked 9, 9a, 9b, and 9c. Due to the constraints of the slope, the bottom planes of the short bevel box-type heat exchange plates marked 9, 9a, 9b, and 9c will no longer sink after sinking to a certain position, and will naturally and stably stay there. A stable and naturally existing plate spacing with a certain height will also be formed between the long bevel box-type heat exchange plates marked 10, 10a, and 10b. The value of this plate spacing is related to the melting rate of the brazing material on each heat exchange plate. And because the box-type stacked heat exchanger with a new internal flow channel heat exchange structure has only an inlet and an outlet in each internal flow channel, under the premise of ensuring the brazing sealing of the inclined surfaces around each internal flow channel, in order to reduce costs, it can be considered that the short pad structures at both ends of the internal flow channel heat exchange structure marked as 1, 1a, 1b, 1c, and 1d can also be cancelled.

Claims

1. A box-type stacked heat exchanger with a novel inner flow channel 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-type 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-type heat exchange plate. For the heat exchange mediums 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 form a cross-type partition heat exchange, which is characterized in that: By changing the various high pad structures on both sides of the open external circulation heat exchange structure, the heat exchange structure of its inner flow channel is changed accordingly, so that the heat exchange medium flowing through the inner flow channel has different processes, different flow channels and different flow directions, and multiple different heat exchange media can exist in the inner flow channel at the same time.

2. The box-type stacked heat exchanger according to claim 1, characterized in that: By changing the blocking high pad structure and the high pad structure with through holes on both sides of the open external circulation heat exchange structure, the heat exchange medium flowing through the inner flow channel has a multi-channel and multi-flow inner flow channel heat exchange structure and different heat exchange medium flow directions.

3. The box-type stacked heat exchanger according to claim 1, characterized in that: By changing the blocking high pad structure and the high pad structure with through holes on both sides of the open external circulation heat exchange structure, the heat exchange medium flowing through the inner flow channel can have a single-flow channel and multi-flow inner flow channel heat exchange structure and different heat exchange medium flow directions.

4. The box-type stacked heat exchanger according to claim 1, characterized in that: By changing the blocking high pad structure and the high pad structure with through holes on both sides of the open external circulation heat exchange structure, the heat exchange medium flowing through the inner flow channel can have multi-flow channel and single-flow inner flow channel heat exchange structures and different heat exchange medium flow directions.

5. The box-type stacked heat exchanger according to claim 1, characterized in that: By changing the blocking high pad structure, the high pad structure with through holes and the special-shaped high pad structure on both sides of the open external circulation heat exchange structure, multiple heat exchange media can exist simultaneously in the internal flow channel and have different heat exchange medium flow directions.

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