CN216245726U - Compact heat exchange core body based on metal capillary tube and heat exchange device - Google Patents
Compact heat exchange core body based on metal capillary tube and heat exchange device Download PDFInfo
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- CN216245726U CN216245726U CN202122933926.4U CN202122933926U CN216245726U CN 216245726 U CN216245726 U CN 216245726U CN 202122933926 U CN202122933926 U CN 202122933926U CN 216245726 U CN216245726 U CN 216245726U
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Abstract
The utility model discloses a compact heat exchange core body and a heat exchange device based on metal capillary tubes, wherein the heat exchange core body comprises a flow channel structure formed by tightly attaching and connecting a plurality of same metal capillary tubes; the pipe holes of two metal capillaries which are connected in an arbitrary adjacent joint way are respectively used as a hot runner and a cold runner to realize high-efficiency heat exchange through a large amount of metal capillaries, so that the manufacturing cost is greatly reduced, and the multi-dimensional heat exchange of cold and hot fluids can be realized through the reasonable arrangement of the metal capillaries, thereby increasing the heat exchange area and improving the efficiency of the heat exchanger.
Description
Technical Field
The utility model relates to the technical field of heat exchange, in particular to a compact heat exchange core body based on a metal capillary tube and a heat exchange device.
Background
The novel heat exchanger which can bear high temperature and high pressure, has compact volume, high heat exchange efficiency and acceptable cost is becoming a direction for research and development in the field of heat exchangers. Printed circuit plate heat exchangers (PCHE) are considered by many researchers to be one of the most promising candidates. The printed circuit board type heat exchanger is a compact type heat exchanger and is processed by a micro-channel etching forming technology and a diffusion welding technology, and the adopted processing and manufacturing process determines that the printed circuit board type heat exchanger has the characteristics of compact volume, high heat exchange efficiency, high structural strength and the like, so the printed circuit board type heat exchanger has great potential in the solar energy utilization field, the nuclear energy utilization field and the hydrogen production industry; the cost is a key factor for restricting the wide application of the printed circuit board type heat exchange cipher device, the unit weight cost of the current printed circuit board is high, and the huge consumption of the microchannel etching forming process is the key factor; not only needs to consume a large amount of manpower and material resources, but also has long processing time and low efficiency; and the problems of high rejection rate in the manufacturing process and high ineffective cost are also solved.
Therefore, finding alternative processes to form microchannels is becoming an important direction for optimizing the processing cost and efficiency of microchannel compact heat exchangers.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the micro-channel etching forming process of the printed circuit board is high in cost, a large amount of manpower and material resources are needed to be consumed, the processing time is long, and the efficiency is low; the utility model aims to provide a compact heat exchange core body and a heat exchange device based on a metal capillary tube, and aims to solve the technical problems.
The utility model is realized by the following technical scheme:
a compact heat exchange core based on metal capillary tubes is characterized in that a plurality of identical metal capillary tubes are tightly attached and connected to form a flow channel structure;
the pipe holes of two metal capillary tubes which are randomly adjacent, attached and connected are respectively used as a hot runner and a cold runner.
The working principle of the scheme is as follows: the scheme is based on the compact heat exchange core body of the metal capillary tube, and the cold and hot fluids in the heat exchange core body are reasonably distributed through the ingenious arrangement of the metal capillary tube, so that the micro-channel compact heat exchanger for efficient heat exchange is achieved;
although the printed circuit board type heat exchanger has the characteristics of compact volume, high heat exchange efficiency, high structural strength and the like, the micro-channel etching forming process is huge, the processing time is long, the efficiency is low, the ineffective cost is high, the scheme can realize high-efficiency heat exchange through a large number of metal capillary tubes, the manufacturing cost is greatly reduced, and the reasonable arrangement of the metal capillary tubes can realize the multidimensional heat exchange of cold and hot fluids, so that the heat exchange area is increased, and the efficiency of the heat exchanger is improved.
The existing plate heat exchanger can only realize two-dimensional heat exchange: one dimension is the heat transfer of runner direction, another dimension is the heat transfer of upper and lower adjacent layer runner, and the heat transfer of upper and lower direction, and this scheme metal capillary is the connection of laminating closely, two metal capillaries of arbitrary adjacent laminating connection, its tube hole is as hot runner and cold runner respectively, except the heat transfer in runner direction, any one hot runner metal capillary periphery all has cold runner metal capillary, can carry out the heat transfer of multiple directions, realize the heat transfer of cold and hot fluid multidimension, thereby increase heat transfer area, improve heat exchanger efficiency.
The further optimization scheme is that the cross section of the metal capillary tube is rectangular, circular or regular polygon. The scheme can be realized as long as no redundant gap is left between the metal capillary tubes, so that the metal capillary tubes with proper shapes can be selected according to actual conditions.
The further optimized scheme is that the metal capillary tube is a square tube. In order to facilitate subsequent installation, the metal capillary tube is used as a square tube, so that the assembly is facilitated, and the overall structure is compact and solid after the assembly.
The further optimization scheme is that the square pipes are attached and welded along the pipe walls in pairs to form a flow channel structure, pipe holes of the square pipes serve as a hot runner and a cold runner, the periphery of the pipe wall of the cold runner square pipe is a hot runner square pipe, and the periphery of the pipe wall of the hot runner square pipe is a cold runner square pipe.
The further optimization scheme is that the device further comprises a collecting assembly, and the collecting assembly collects an inlet of the cold runner square pipe, an outlet of the cold runner square pipe, an inlet of the runner square pipe and an outlet of the hot runner square pipe respectively.
Because the cold runner and the hot runner are doped and connected, the metal pipes of the cold runner and the hot runner need to be gathered together at the input port and the output port of the runner so as to facilitate the input and the output of fluid.
According to a further optimization scheme, the collection assembly is composed of a plurality of collection pipes, and each collection pipe comprises an integral extension section, a torsion section and a bent closing section;
the extension section is connected with the square pipe, and the area of the cross section of the extension section is gradually reduced;
the torsion section is connected behind the extension section, and the extension section is twisted for 45 degrees along the edge of the extension section;
the curved closing-in section is connected behind the torsion section, and the curved closing-in section is bent by 90 degrees.
The further optimization scheme is that the bending direction of the bent closing-in section of the collection assembly connected with the cold runner square pipe is opposite to that of the bent closing-in section of the collection assembly connected with the hot runner square pipe.
The hot runner and the cold runner have input ports on one side and output ports on one side, so that the collection assemblies of the hot runner and the cold runner bend in different directions respectively to facilitate collection.
The further optimization scheme is that the device further comprises a tube box, wherein the collection assemblies of the hot runner square tube and the cold runner square tube are respectively connected with the tube box, and the tube box collects the bent closing sections of the collection assemblies.
The further optimization scheme is that the collection assembly is a plurality of rectangular heat exchange plates, and the rectangular heat exchange plates are provided with etching flow channels corresponding to the square tubes; the starting point and the end point of the etching flow channel are respectively positioned on different sides of the rectangular heat exchange plate;
the directions of all etching runners corresponding to the hot runner square pipe are consistent, and the directions of all etching runners corresponding to the cold runner square pipe are consistent.
Considering that the number of the capillary square tubes is large, the assembly of the inlet and outlet sections needs to be reasonably arranged to avoid interference, and the assembly work of the heat exchange tube assembly is complicated, the heat exchange tube assembly can be simplified in a form of etching plate combination, and in order to facilitate gathering, the gathering component of the hot runner and the etching runner of the cold runner are respectively gathered.
This scheme still provides a heat transfer device, has the compact heat transfer core based on metal capillary.
The metal capillary tube is used for forming the micro-channel to reduce the manufacturing cost of the heat exchanger, the multi-dimensional heat exchange of cold and hot fluid is realized by uniformly and alternately arranging the cold and hot channels, the formed heat exchanger has the advantages of high heat exchange efficiency, compact structure and the like, and the heat exchanger has the advantages of simple principle, low cost and good market application prospect.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
according to the compact heat exchange core body based on the metal capillary tube, the manufacturing cost is greatly reduced while high-efficiency heat exchange is realized by applying a large amount of metal capillary tubes, and multi-dimensional heat exchange of cold and hot fluids can be realized by reasonable arrangement of the metal capillary tubes, so that the heat exchange area is increased, and the efficiency of a heat exchanger is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a schematic sectional view of a metal capillary heat exchange core structure;
FIG. 2 is a schematic structural view of a metal capillary heat exchange core;
FIG. 3 is a partial schematic structural view of a metal capillary heat exchange core of example 5;
FIG. 4 is a schematic view of the tube box structure of embodiment 5;
fig. 5 is a schematic structural view of a rectangular heat exchange plate collection assembly.
Reference numbers and corresponding part names in the drawings:
the heat exchanger comprises a 1-tube group, a 12-sawtooth sealing strip, a 13-tube wall, a 14-connecting tube, a 15-flange, a 2-collecting tube, a 21-extension, a 22-torsion section, a 23-bending closing-in section, a 3-cold runner outlet, a 4-hot runner outlet, a 5-cold runner inlet, a 6-hot runner inlet, a 7-rectangular heat exchange plate, an 8-etching runner and a 9-torsion section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1, embodiment 1 provides a compact heat exchange core based on metal capillary, including a plurality of identical metal capillaries closely attached to form a flow channel structure;
the pipe holes of two metal capillary tubes which are randomly adjacent, attached and connected are respectively used as a hot runner and a cold runner.
Example 2
The present embodiment is different from the previous embodiment in that the cross section of the metal capillary is rectangular, circular or regular polygonal; the scheme can be realized as long as no redundant gap is left between the metal capillary tubes, so that the metal capillary tubes with proper shapes can be selected according to actual conditions.
Example 3
The difference between this embodiment and the previous embodiment is that, as a preference, the metal capillary is a square tube, and the hydraulic diameter of the square tube of the capillary is not more than 5 mm. As shown in fig. 1 and 2, the heat exchange core body is a large cuboid, a plurality of square pipes are attached and welded along the pipe wall two by two to form a flow channel structure, the pipe holes of the square pipes are used as a hot runner and a cold runner, the periphery of the pipe wall of the cold runner square pipe is a hot runner square pipe, and the periphery of the pipe wall of the hot runner square pipe is a cold runner square pipe. The heat exchange core body is obtained from a cross section diagram of the heat exchange core body, each layer of square pipes is alternately arranged by a cold runner and a hot runner along a diagonal line of the cross section, two adjacent square pipes in each layer are only in edge contact, and the side surfaces are not in direct contact. Three-dimensional heat exchange of cold and hot fluid is realized through chessboard-like uniform staggered arrangement of cold and hot runners (3 is a cold runner outlet, 4 is a hot runner outlet, 5 is a cold runner inlet, 6 is a hot runner inlet, the cold and hot fluid is arranged in a countercurrent manner along the flow direction, the cross section of a heat exchanger core body can be seen, the cold and hot runners are in chessboard-like uniform staggered arrangement, four hot runners are circumferentially arranged on each cold runner, four cold runners are circumferentially arranged on each hot runner, circumferential two-dimensional heat exchange is realized, one-dimensional heat exchange along the flow direction is considered, three-dimensional heat exchange of the cold and hot fluid is realized in the heat exchanger, compared with a conventional plate heat exchanger (the same side is cold/hot fluid, and only one-dimensional heat exchange can be realized in the circumferential direction), the heat exchange area of the cold and hot fluid is greatly improved.
Example 4
The present embodiment is based on the previous embodiment, and further includes a collecting assembly, where the collecting assembly collects an inlet of the cold runner square pipe, an outlet of the cold runner square pipe, an inlet of the runner square pipe, and an outlet of the hot runner square pipe, respectively.
As shown in fig. 2 and 3, the collecting assembly is constituted by a plurality of collecting pipes 2, the collecting pipes 2 comprising an integral extension section 21, a torsion section 22 and a curved closing section 23;
the extension section 21 is connected with the square pipe, the area of the cross section of the extension section 21 is gradually reduced,
the twisted section 22 is connected behind the extension section 21, the extension section 21 is twisted 45 along its edges,
the curved closing-in section 23 is connected behind the torsion section 22, the curved closing-in section 23 being bent through 90 °.
The bending direction of the bent closing section of the collecting assembly connected with the cold runner square pipe is opposite to that of the bent closing section of the collecting assembly connected with the hot runner square pipe.
As shown in fig. 3, taking a single capillary square tube as an example, the collecting tube is composed of an extension section, a torsion section and a bending closing section, the extension section reduces the cross section of the flow passage of the capillary square tube to leave a space for arrangement of the inlet and outlet sections of the cold and hot fluids, the torsion section adjusts the tube section to be horizontal through 45 ° torsion, so that the collecting tubes of the inlet and outlet are folded, and the bending closing section makes the cold and hot fluids pass through the side surface of the heat exchanger through 90 ° turning.
Each layer of square tubes along the section diagonal line of the heat exchange core body are alternately arranged in a cold runner and a hot runner, the gathering tubes are connected with the square tubes and then can be bent in a staggered mode, all gathering tubes connected with the cold runner square tubes are bent to the same side, all gathering tubes connected with the hot runner square tubes are bent to the same side, the sections of the gathering assemblies on the two sides are square, and therefore gathering of the gathering assemblies is facilitated.
Example 5
The present embodiment further provides a tube box on the basis of the above embodiment, as shown in fig. 4, each collection assembly of the hot runner square tube and the cold runner square tube is connected to one tube box, and the tube box gathers the curved closing sections of the collection assemblies. The inlet and outlet of the cold runner square pipe and the runner square pipe are gathered together through the tail end of the collecting assembly (the square pipes are tightly combined through diffusion welding or brazing and the like) to form a pipe group 1 in the figure 4, the periphery of the pipe group 1 is sealed by four saw-tooth-shaped sealing strips 12, a pipe box wall 13 is formed by welding along the edge to form a pipe box and is welded with the saw-tooth-shaped sealing strips 12 to form a closed cavity, a connecting pipe 14 and the pipe box wall 13 are welded to serve as an inlet and an outlet of cold and hot fluids, a flange 15 is connected with the connecting pipe 14 through welding or threads, and the flange 15 is used for being assembled with an external connecting pipe. The welding process should ensure the quality of the weld to avoid fluid leakage.
Example 6
As shown in fig. 5, the collection assembly is a plurality of rectangular heat exchange plates 7, and the rectangular heat exchange plates are provided with etching flow channels 8 corresponding to the square pipes; the starting point and the end point of the etching flow channel 8 are respectively positioned on different sides of the rectangular heat exchange plate;
the directions of all etching runners corresponding to the hot runner square pipe 9 are the same, and the directions of all etching runners corresponding to the cold runner square pipe 9 are the same.
Considering that the number of the capillary square tubes is large, the assembly of the inlet and outlet sections needs to be reasonably arranged to avoid interference, and the assembly work of the heat exchange tube assembly is more complicated, so the heat exchange tube assembly can be simplified by adopting the form of etching plate combination; the etching plate is divided into a cold runner plate and a hot runner plate, the etching runner is rectangular or square, and the etching plate is connected through diffusion welding.
The etching plate is connected with the capillary square tube, and the etching plate is provided with a bent runner which collects the hot runner and the cold runner to different sides respectively.
Or the header of example 4 is limited by rectangular or square etched flow channels, which are matched with the outer dimensions of the torsion section 9, and the welding is completed by diffusion welding or brazing and other processes. A hot fluid inlet and a cold fluid outlet can be formed finally; the limiting of the header by the etching plate can simplify the assembly and improve the efficiency, and meanwhile, the welding quality of the etching plate and the header needs to be ensured to prevent fluid leakage.
Example 7
A heat exchange device is provided with the compact heat exchange core body based on the metal capillary tube.
The micro flow channel is formed by arranging the capillary square tubes, so that expensive photochemical flow channel etching cost is avoided, and the manufacturing cost of the heat exchanger is reduced. Meanwhile, the three-dimensional heat exchange of the cold and hot fluid in the heat exchanger is realized by utilizing the reasonable arrangement of the capillary square tubes, so that the heat exchange area of the heat exchanger is increased, and the heat exchange efficiency is improved.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the utility model. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A compact heat exchange core body based on metal capillary tubes is characterized by comprising a flow channel structure formed by tightly attaching and connecting a plurality of same metal capillary tubes;
the pipe holes of two metal capillary tubes which are randomly adjacent, attached and connected are respectively used as a hot runner and a cold runner.
2. A compact heat exchange core based on a metal capillary tube according to claim 1, wherein the cross section of the metal capillary tube is rectangular, circular or regular polygonal.
3. The compact heat exchange core based on metal capillary tubes as claimed in claim 2, wherein the metal capillary tubes are square tubes.
4. The compact heat exchange core based on the metal capillary tube as claimed in claim 3, wherein the plurality of square tubes are bonded and welded pairwise along the tube wall to form a flow channel structure, the tube holes of the square tubes are used as a hot runner and a cold runner, the periphery of the tube wall of the cold runner square tube is a hot runner square tube, and the periphery of the tube wall of the hot runner square tube is a cold runner square tube.
5. The compact heat exchange core based on the metal capillary tube as claimed in claim 4, further comprising a collection assembly, wherein the collection assembly collects the inlet of the cold runner square tube, the outlet of the cold runner square tube, the inlet of the runner square tube and the outlet of the hot runner square tube respectively.
6. A compact metal capillary based heat exchange core according to claim 5 wherein the manifold assembly is comprised of a plurality of manifolds comprising integral extension, torsion and curved throat sections;
the extension section is connected with the square pipe, and the area of the cross section of the extension section is gradually reduced;
the torsion section is connected behind the extension section, and the extension section is twisted for 45 degrees along the edge of the extension section;
the curved closing-in section is connected behind the torsion section, and the curved closing-in section is bent by 90 degrees.
7. The compact metal capillary based heat exchange core as recited in claim 6, wherein the curved tapered sections of the collection assembly connecting the cold runner square tubes and the collection assembly connecting the hot runner square tubes are curved in opposite directions.
8. The compact heat exchange core based on the metal capillary tube as claimed in claim 7, further comprising a tube box, wherein the collection assemblies of the hot runner square tube and the cold runner square tube are respectively connected with one tube box, and the tube box collects the bent closing sections of the collection assemblies.
9. The compact heat exchange core based on the metal capillary tube as claimed in claim 5, wherein the collection assembly is a plurality of rectangular heat exchange plates, and the rectangular heat exchange plates are provided with etched flow channels corresponding to the square tubes; the starting point and the end point of the etching flow channel are respectively positioned on different sides of the rectangular heat exchange plate;
the directions of all etching runners corresponding to the hot runner square pipe are consistent, and the directions of all etching runners corresponding to the cold runner square pipe are consistent.
10. A heat exchange device having a compact heat exchange core based on a metal capillary tube according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122933926.4U CN216245726U (en) | 2021-11-26 | 2021-11-26 | Compact heat exchange core body based on metal capillary tube and heat exchange device |
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| CN202122933926.4U CN216245726U (en) | 2021-11-26 | 2021-11-26 | Compact heat exchange core body based on metal capillary tube and heat exchange device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306979A (en) * | 2022-10-12 | 2022-11-08 | 中国核动力研究设计院 | Plugging device and plugging method for micro-channel heat exchanger |
| CN117387406A (en) * | 2023-12-13 | 2024-01-12 | 中国核动力研究设计院 | Compact plate heat exchanger with adjustable cross-sectional flow area |
-
2021
- 2021-11-26 CN CN202122933926.4U patent/CN216245726U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306979A (en) * | 2022-10-12 | 2022-11-08 | 中国核动力研究设计院 | Plugging device and plugging method for micro-channel heat exchanger |
| CN117387406A (en) * | 2023-12-13 | 2024-01-12 | 中国核动力研究设计院 | Compact plate heat exchanger with adjustable cross-sectional flow area |
| CN117387406B (en) * | 2023-12-13 | 2024-02-27 | 中国核动力研究设计院 | Compact plate heat exchanger with adjustable cross-sectional flow area |
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