CN212482206U - Diffusion welding compact heat exchanger with combined heat exchange plate - Google Patents
Diffusion welding compact heat exchanger with combined heat exchange plate Download PDFInfo
- Publication number
- CN212482206U CN212482206U CN202020995581.8U CN202020995581U CN212482206U CN 212482206 U CN212482206 U CN 212482206U CN 202020995581 U CN202020995581 U CN 202020995581U CN 212482206 U CN212482206 U CN 212482206U
- Authority
- CN
- China
- Prior art keywords
- plates
- heat exchange
- heat exchanger
- ribbed
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a diffusion welding compact heat exchanger with combined heat exchange plate, the heat exchange core part is composed of an etching plate and a ribbed plate, the etching plate prepares a micro flow passage through chemical etching and is suitable for working media with high cleanliness, the ribbed plate prepares a large-size flow passage through machining and is suitable for working media with low cleanliness, and the combination of the two flow passages reduces the requirement on the cleanliness of the working media; the two plates are alternately stacked and connected in a diffusion welding mode to form a heat exchange core body, so that the high-temperature and high-pressure resistance of the heat exchanger is ensured; the heat exchange core body does not need a partition plate, so that the compactness of the heat exchanger is ensured; the ribbed sheet can be machined to have sufficient rib width to meet diffusion welding requirements.
Description
Technical Field
The utility model relates to a indirect heating equipment technical field, concretely relates to diffusion welding compact heat exchanger with combination heat transfer slab.
Background
The heat exchanger is general equipment for heat exchange and has wide application field. The conventional shell-and-tube heat exchanger has the problems of low heat exchange efficiency, large volume and weight and the like, and the traditional plate heat exchanger and the plate-fin heat exchanger have the problems of low temperature resistance and pressure resistance and the like, so that the conventional shell-and-tube heat exchanger is difficult to adapt to the service environment with higher requirements on the compactness and the high temperature and pressure resistance of the heat exchanger.
A printed circuit board heat exchanger (PCHE) is a novel compact high-efficiency heat exchanger, a micro flow channel is prepared on a heat exchange plate by adopting a chemical etching method, the heat exchange plates with different flow channels are mutually superposed, and a heat exchange core body is formed by a diffusion welding method. The heat exchanger has the advantages of high heat transfer efficiency, high temperature resistance, high pressure resistance, small size, light weight and the like, and has a good application effect. The prior art has described this type of heat exchanger in more detail, and more technical solutions have been disclosed especially in the form of heat exchanger flow channels, the way of flow channel arrangement, the way of flow channel combination, the reinforced heat exchange structure in the flow channel, and the like. But the heat exchanger is limited by a chemical etching processing technology, the size of a flow channel of the heat exchanger is small, the requirement on the cleanliness of working media is very high, large particles are easy to block the flow channel for the working media with low cleanliness such as seawater, smoke and the like, the heat exchange is influenced, potential safety hazards are brought, and the application range of the printed circuit board type heat exchanger is limited.
Chinese patent documents CN107782181A and CN106403688A disclose a heat exchange core structure of etched plate, formed plate and partition plate, in which the cross section of the formed plate is continuously arranged in a shape of a plurality of zigzag, the size of the flow channel is large, and the heat exchange core structure can pass through working media with low cleanliness. However, the technology has the following defects: 1) the adopted forming plate is thin in thickness and low in pressure resistance, and the requirement on the working medium pressure at the side of the forming plate cannot be too high; 2) when the whole core body is prepared by diffusion welding, the structural rigidity of the formed plate in the shape of a Chinese character 'ji' is poor, and the fins in the vertical direction are easy to collapse, so that the pressure of a pressure head cannot be set too large during diffusion welding, the diffusion connection effect of the side of the etched plate is influenced, and the pressure resistance of the side of the etched plate is further influenced; 3) this technique has increased the complexity of heat transfer core, has improved the manufacturing degree of difficulty to need to set up more baffle and be used for separating etching plate and profiled sheeting, increased equipment weight, reduced the compactness.
SUMMERY OF THE UTILITY MODEL
To the defect of prior art, the utility model aims to provide a diffusion welding compact heat exchanger with combination heat transfer slab, heat transfer core part comprises etching slab and ribbed slab, the etching slab is applicable to the high working medium of cleanliness through the miniature runner of etching preparation, the ribbed slab is gone up and is formed great size runner through machining and is applicable to the low working medium of cleanliness, two kinds of runner make up and use the requirement that has reduced the working medium cleanliness, the etching slab passes through the diffusion welding mode with ribbed slab and is connected, the high temperature resistant high pressure resistance of heat exchanger has been guaranteed.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a diffusion welding compact heat exchanger with combined heat exchange plates comprises a heat exchange core body, a cold side end socket, a cold side connecting pipe, a hot side end socket and a hot side connecting pipe, wherein the heat exchange core body is composed of an etching plate and ribbed plates, a fluid channel is prepared on the etching plate by adopting a chemical etching method, the ribbed plates are used for preparing the fluid channel on a flat plate by adopting a machining method in a material removing mode, the two plates are alternately stacked, and the heat exchange core body is formed by a diffusion welding method.
Specifically, the etching plate is a single-sided etching fluid channel, the ribbed plate is provided with the fluid channel on one side, the etching plate and the ribbed plate are alternately stacked in a mode that the plane covers the opening surface of the flow channel, and a partition plate is not needed in the middle.
The fluid channels on the etched plate form hot side or cold side fluid channels, the fluid channels on the ribbed plate form cold side or hot side fluid channels, and hot fluid and cold fluid are subjected to countercurrent heat exchange.
The inlet and outlet of the fluid channel on the etching plate and the inlet and outlet of the fluid channel on the ribbed plate are staggered with each other, the inlet and outlet of the hot-side fluid channel are respectively connected with a hot-side end socket and a hot-side connecting pipe, and the inlet and outlet of the cold-side fluid channel are respectively connected with a cold-side end socket and a cold-side connecting pipe.
The inlet and outlet sections of the fluid channels on the etched plate are perpendicular to the inlet and outlet sections of the fluid channels on the ribbed plate, and the middle section of the fluid channels on the etched plate is parallel to the middle section of the fluid channels on the ribbed plate.
The flow path shapes of the etching plate and the ribbed plate are in a periodic S shape, a periodic Z shape or a periodic straight shape, or any combination of the shapes.
The cross section of the fluid channel etched on the etching plate is semicircular, and the central lines of the fluid channels are parallel to each other.
The cross section of the fluid channel processed on the ribbed plate is rectangular, the central lines of the fluid channels are parallel to each other, and the corners of the lower side of the rectangular fluid channel are provided with fillets.
A plurality of heat exchange cores can be spliced into a larger core in a welding mode, and then the larger core and the hot side end socket, the cold side end socket, the hot side connecting pipe and the cold side connecting pipe form a larger heat exchanger.
Advantageous effects
The heat exchange core body of the utility model is formed by alternately stacking the etching plates and the ribbed plates in a diffusion welding mode, and has the advantages that (1) the etching plates form a micro flow passage through chemical etching, and are suitable for working media with higher cleanliness, the cross section of the semicircular flow passage is smaller in size, but the flow passages are dense, the heat exchange area is large, and the heat exchange effect is good; the ribbed plate is machined into a large-size flow channel on the flat plate in a machining mode, large-particle impurities can be used, the flow channel can be prevented from being blocked, and the requirement on the cleanliness of the working medium is lowered; by adopting the combination of the etching sheet and the ribbed sheet, the heat exchange between the working medium with high cleanliness and the working medium with low cleanliness can be realized, and the application range of the compact heat exchanger is expanded; (2) the ribbed plate is prepared by a flat plate in a machining mode, and ribs can be machined to have enough width, so that the requirement of diffusion welding is met, and the ribbed plate layer is ensured to have higher pressure resistance; meanwhile, the problem that the diffusion welding effect and the pressure bearing capacity of the etching plate sheet layer are affected due to the fact that the pressure of a diffusion welding pressure head is not too large because the rigidity is poor and the vertical fins are easy to collapse when the inverted V-shaped forming plate sheet is adopted in the prior art is solved; (3) the corners of the lower side of the rectangular fluid channel on the ribbed plate are provided with fillets, so that the flow dead zone can be reduced, and the scaling can be reduced; (4) the etched plate and the ribbed plate can be arranged into various periodic flow channel structures, so that the heat exchange area can be increased, fluid is disturbed, a heat transfer boundary layer is damaged, the heat exchange efficiency is enhanced, and the compactness of the heat exchanger is improved; (5) the utility model adopts the technical proposal that the etching plate sheet and the ribbed plate sheet form the heat exchange core body, compared with the prior art that the etching plate sheet, the forming plate sheet and the clapboard are adopted, the arrangement of the clapboard is cancelled, the manufacturing difficulty is reduced, the weight of the heat exchanger is further lightened, and the compactness of the heat exchanger is improved; (6) a plurality of heat exchange core bodies can be spliced into a larger core body through a welding mode, the limitation of the diffusion welding equipment on the height dimension of the heat exchange core bodies can be made up, and the requirement of a heat exchanger with larger heat load is met.
Drawings
Fig. 1 is a schematic view of the overall structure of the heat exchanger of the present invention;
FIG. 2 is a schematic view of the heat exchange core of the present invention;
FIG. 3 is a schematic cross-sectional view of a middle section of the heat exchange core body of the present invention;
FIG. 4 is a schematic view of the hot side inlet structure of the heat exchange core of the present invention;
FIG. 5 is a schematic view of the structure of the cold side inlet of the heat exchange core of the present invention;
FIG. 6 is a schematic view of the flow path shape of the middle etched plate of the present invention;
FIG. 7 is a schematic view of the flow path shape of the ribbed plate flow channel of the present invention;
fig. 8 is the utility model discloses well a plurality of heat transfer cores splice the schematic structure diagram of constituteing a heat exchanger.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, the diffusion welding compact heat exchanger with combined heat exchange plates of the present invention comprises a heat exchange core 1, a cold side end socket 2, a cold side connecting pipe 3, a hot side end socket 4 and a hot side connecting pipe 5; wherein, the heat exchange core 1 is formed by alternately stacking etched plates 101 and ribbed plates 102; the micro fluid channels are prepared on the etched plate 101 through a chemical etching method, the large-size fluid channels are prepared on a flat plate through a machining method on the ribbed plate 102, the two plates are alternately stacked, and the heat exchange core body 1 is formed through a diffusion welding method. The flow channel processed by the chemical etching method is a micro flow channel, has a small size and is suitable for working media with high cleanliness, the flow channel obtained by the machining method has a large size and is suitable for working media with low cleanliness, the two flow channels are combined for use, the requirement on the cleanliness of the working media is reduced, and the application range of the heat exchange core is widened.
When the etching plate sheet 101 and the ribbed plate sheet 102 are both single-side processed flow channels and the other side is a plane, and the two are alternately stacked, as shown in fig. 2-3, one side of the ribbed plate sheet 102, which is processed with the flow channels, is connected with the plane of the etching plate sheet 101, the flow channel surface of the etching plate sheet 101 is connected with the plane of the other ribbed plate sheet 102, the flow channel surface of the other ribbed plate sheet 102 is connected with the plane of the other etching plate sheet 101, and so on, a closed flow channel can be formed without a partition plate in the middle, the structure is compact, and the weight of the heat exchanger can be effectively reduced.
The fluid channels on the etching plate 101 form a hot side (or cold side) fluid channel, the fluid channels on the ribbed plate 102 form a cold side (or hot side) fluid channel, hot fluid and cold fluid are in countercurrent heat exchange, inlets and outlets of the hot side fluid channel and the cold side fluid channel are staggered, an inlet and an outlet of the hot side fluid channel are respectively connected with a hot side end socket 4 and a hot side connecting pipe 5, an inlet and an outlet of the cold side fluid channel are respectively connected with an end socket cold side 2 and a cold side connecting pipe 3, and the hot side end socket 4 and the cold side end socket 2 are distributed on different sides of the heat exchange.
The inlet section and the outlet section of the flow channel of the etching plate 101 are perpendicular to the inlet section and the outlet section of the flow channel of the ribbed plate 102, and the middle section of the flow channel of the etching plate 101 is parallel to the middle section of the ribbed plate 102.
The ribbed plate sheet 102 is formed by machining a groove, namely a fluid channel, in a flat plate in a material removing mode, and compared with a heat exchange plate sheet formed by bending a thin plate in the prior art, the ribbed plate sheet obtained by machining a solid material has higher strength, and when the ribbed plate sheet is machined, ribs between adjacent flow channels can be machined to have enough width so as to ensure that the ribbed plate sheet 102 has enough strength, is not easy to deform and can adapt to diffusion welding.
The cross-sectional shape of the fluid channel prepared by chemical etching on the etching plate 101 is semicircular, the centers of the flow channels are parallel to each other, the flow path shape of the flow channel is linear, or periodic Z-shaped, S-shaped, etc., fig. 6 (a), (b), (c) respectively show the flow path shapes of the linear, periodic Z-shaped, and periodic S-shaped on the etching plate 101, of course, the above is merely an example, but not limited thereto, and the flow path cross-sectional shape and the flow path shape of the flow channel of the etching plate 101 may also be other shapes obtained by those skilled in the art through conventional transformation.
The cross section of the fluid channel on the ribbed plate 102 is rectangular, the corners of the lower side of the channel are provided with fillets, so that the flow dead zone is reduced, the scale is prevented, the center lines of the fluid channel are parallel to each other, the flow path shapes are linear, or periodic Z-shaped, S-shaped, and the like, fig. 7 (a), (b), and (c) respectively show the flow path shapes of the linear, periodic Z-shaped, and periodic S-shaped on the ribbed plate 102, of course, the above is merely an example, but not limited thereto, and the flow path cross section shape and the flow path shape of the ribbed plate 102 may also be other shapes obtained by those skilled in the art through conventional transformation.
The etching plate 101 and the ribbed plate 102 can adopt the same flow shape or different flow shapes to meet different requirements of enhancing heat exchange or reducing flow resistance.
Fig. 4 is a partial schematic view of a hot side inlet of the heat exchange core 1 shown in fig. 1, where a hot side fluid uniformly enters a semicircular fluid passage, and fig. 5 is a partial schematic view of a cold side inlet of the heat exchange core 1 shown in fig. 1, where a cold side fluid uniformly enters a rectangular fluid passage.
As shown in fig. 8, a plurality of heat exchange cores 1 can be spliced into a larger core by welding, and then form a larger heat exchanger with a hot-side end socket, a cold-side end socket, a hot-side connecting pipe and a cold-side connecting pipe, so as to meet the requirement of larger heat load.
The working process of the heat exchanger is as follows: and cold and hot side fluids respectively enter each layer of channel at the cold side and the hot side of the heat exchange core body through the cold and hot side inlet connecting pipes, fully exchange heat between the fluids at the two sides, and then flow out of the heat exchanger through the outlet connecting pipes.
The technical solution and the embodiments listed in the present invention are not limited, and the technical solution and the embodiments listed in the present invention are equivalent or have the same effect.
Claims (9)
1. A diffusion welding compact heat exchanger with combined heat exchange plates comprises a heat exchange core body, a cold side end socket, a cold side connecting pipe, a hot side end socket and a hot side connecting pipe, and is characterized in that the heat exchange core body is composed of etching plates and ribbed plates, the etching plates are used for preparing fluid channels by adopting a chemical etching method, the ribbed plates are used for preparing the fluid channels on a flat plate by adopting a machining method in a material removing mode, the two plates are alternately stacked, and the heat exchange core body is formed by a diffusion welding method.
2. The diffusion-welded compact heat exchanger with assembled heat exchange plates according to claim 1, wherein the etched plates are etched on one side to form fluid channels, the ribbed plates are machined on one side to form fluid channels, and the etched plates and the ribbed plates are alternately stacked in a manner that the planes cover the open surfaces of the flow channels without a partition plate in between.
3. A diffusion-welded compact heat exchanger with assembled heat exchanger plates according to claim 1, characterized in that the fluid channels of the etched plates form hot-side or cold-side fluid channels, the fluid channels of the ribbed plates form cold-side or hot-side fluid channels, and hot and cold fluids exchange heat in countercurrent.
4. The diffusion-welded compact heat exchanger with the combined heat exchange plates as recited in claim 1, wherein the inlet and outlet of the fluid channel on the etched plate and the inlet and outlet of the fluid channel on the ribbed plate are staggered, the inlet and outlet of the hot-side fluid channel are respectively connected with the hot-side end socket and the hot-side connecting pipe, and the inlet and outlet of the cold-side fluid channel are respectively connected with the cold-side end socket and the cold-side connecting pipe.
5. A diffusion-welded compact heat exchanger with assembled heat exchanger plates according to claim 1, characterized in that the inlet and outlet sections of the fluid channels on the etched plates are perpendicular to the inlet and outlet sections of the fluid channels on the ribbed plates, and the middle sections of the fluid channels on the etched plates are parallel to the middle sections of the fluid channels on the ribbed plates.
6. The diffusion-welded compact heat exchanger with combined heat exchange plates as recited in claim 1 in which the flow path shapes of the etched and ribbed plates are periodic S-shaped, Z-shaped, or linear, or any combination thereof.
7. The diffusion-welded compact heat exchanger with assembled heat exchange plates as recited in claim 1 in which the etched plates have etched flow channels with semi-circular cross-sectional shapes and the flow channels have their centerlines parallel to each other.
8. The diffusion-welded compact heat exchanger with combined heat exchange plates as recited in claim 1 in which the cross-sectional shape of the fluid channel formed on the ribbed plates is rectangular, the center lines of the fluid channels are parallel to each other, and the corners of the lower side of the rectangular fluid channel are provided with rounded corners.
9. The diffusion-welded compact heat exchanger with combined heat exchange plates as recited in claim 1 in which a plurality of said heat exchange cores can be spliced into a larger core by welding, and then the larger core, the hot side end socket, the cold side end socket, the hot side connecting pipe and the cold side connecting pipe form a larger heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020995581.8U CN212482206U (en) | 2020-06-03 | 2020-06-03 | Diffusion welding compact heat exchanger with combined heat exchange plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020995581.8U CN212482206U (en) | 2020-06-03 | 2020-06-03 | Diffusion welding compact heat exchanger with combined heat exchange plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212482206U true CN212482206U (en) | 2021-02-05 |
Family
ID=74448265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020995581.8U Active CN212482206U (en) | 2020-06-03 | 2020-06-03 | Diffusion welding compact heat exchanger with combined heat exchange plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212482206U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325717A (en) * | 2022-10-14 | 2022-11-11 | 中国核动力研究设计院 | Heat exchange device and Brayton cycle system |
| CN115846846A (en) * | 2023-02-16 | 2023-03-28 | 杭州沈氏节能科技股份有限公司 | Welding method of compact micro-channel heat exchanger |
-
2020
- 2020-06-03 CN CN202020995581.8U patent/CN212482206U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325717A (en) * | 2022-10-14 | 2022-11-11 | 中国核动力研究设计院 | Heat exchange device and Brayton cycle system |
| CN115846846A (en) * | 2023-02-16 | 2023-03-28 | 杭州沈氏节能科技股份有限公司 | Welding method of compact micro-channel heat exchanger |
| CN115846846B (en) * | 2023-02-16 | 2023-06-02 | 杭州沈氏节能科技股份有限公司 | Welding method of compact micro-channel heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111707115A (en) | Diffusion welding compact heat exchanger with combined heat exchange plate | |
| EP0765461B1 (en) | Three-circuit stacked plate heat exchanger | |
| CN212482206U (en) | Diffusion welding compact heat exchanger with combined heat exchange plate | |
| CN112097552A (en) | Combined compact heat exchanger core | |
| US20120125583A1 (en) | Heat exchanger | |
| CN103868394A (en) | Circulation board of heat exchanger, heat exchanging unit of heat exchanger and heat exchanger | |
| CN111059929A (en) | Novel micro-channel heat exchanger with fin structure | |
| CN111721151A (en) | Core body of printed circuit board type heat exchanger with sinusoidal channel structure | |
| CN112033193A (en) | Microchannel plate heat exchanger core with flow guide area and round corner and manufacturing method thereof | |
| CN115183609A (en) | Heat exchanger core and printed circuit board type heat exchanger comprising same | |
| CN109323607B (en) | Honeycomb type ultra-compact plate heat exchanger | |
| CN111271994A (en) | Hexagonal detachable welded heat exchanger | |
| CN113154915A (en) | Discontinuous S-shaped fin heat exchange plate and PCHE core body | |
| WO2015055122A1 (en) | Plated pipe-type heat exchanger | |
| CN111486719A (en) | Core body of printed circuit board type heat exchanger with symmetrical corrugated structure | |
| CN115979028A (en) | Efficient compact diffusion welding heat exchanger core | |
| CN210625426U (en) | Novel printed circuit board type heat exchanger core containing combined flow channel | |
| CN212721041U (en) | Core body of printed circuit board type heat exchanger with sinusoidal channel structure | |
| CN210689292U (en) | Heat exchanger core structure | |
| CN114963816A (en) | Micro corrugated plate type heat exchanger | |
| CN114623707A (en) | Compact heat exchanger for multi-fluid heat exchange and heat exchange method | |
| CN212931106U (en) | Heat exchange plate sheet of plate heat exchanger for steam condensation | |
| CN210718781U (en) | Heat exchanger plate and plate heat exchanger | |
| CN212778792U (en) | Micro-channel plate heat exchanger core with flow guide area and round corners | |
| CN218480949U (en) | Heat exchanger core and printed circuit board type heat exchanger comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |