CN111197937A - Heat exchanger and manufacturing method thereof - Google Patents
Heat exchanger and manufacturing method thereof Download PDFInfo
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- CN111197937A CN111197937A CN201811364687.1A CN201811364687A CN111197937A CN 111197937 A CN111197937 A CN 111197937A CN 201811364687 A CN201811364687 A CN 201811364687A CN 111197937 A CN111197937 A CN 111197937A
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- heat exchange
- plate
- end plate
- exchange medium
- heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat exchanger which comprises a plurality of core modules, wherein each core module comprises a front end plate, a plurality of first heat exchange plate sheets, a plurality of second heat exchange plate sheets and a rear end plate, the plurality of first heat exchange plate sheets and the plurality of second heat exchange plate sheets are arranged between the front end plate and the rear end plate, a plurality of first heat exchange medium channels are arranged on one side end face, close to the front end plate, of each first heat exchange plate sheet, a plurality of second heat exchange medium channels are arranged on one side end face, close to the front end plate, of each second heat exchange plate sheet, and the first heat exchange medium channels and the second heat exchange medium channels are of micro channel structures.
Description
Technical Field
The invention relates to the field of heat exchange, in particular to a heat exchanger and a manufacturing method thereof.
Background
With the development of the technology, the heat exchanger is widely applied to the industries of energy power, aerospace, ships, chemical engineering, pharmacy and the like, and has important significance for implementing energy conservation and emission reduction strategies. At present, the plate-fin heat exchanger is the preferred heat exchanger form of the ship-based gas turbine. Gas turbines typically employ intercoolers for intercooling cycles to improve their performance, and therefore it is desirable to increase the efficiency of the intercooler as much as possible to ensure overall efficiency of the gas turbine. However, the plate-fin heat exchanger has limited space for improving efficiency, and is difficult to meet the requirement as an intercooler, thereby affecting the overall efficiency of the gas turbine.
Disclosure of Invention
In view of the above technical problems, the present invention provides a heat exchanger and a method for manufacturing the same to overcome the above disadvantages of the prior art.
According to one aspect of the invention, a heat exchanger is provided, which comprises a plurality of core modules, wherein each core module comprises a front end plate, a plurality of first heat exchange plate sheets, a plurality of second heat exchange plate sheets and a rear end plate, the plurality of first heat exchange plate sheets and the plurality of second heat exchange plate sheets are arranged between the front end plate and the rear end plate, a plurality of first heat exchange medium channels are arranged on one side end surface of each first heat exchange plate sheet close to the front end plate, a plurality of second heat exchange medium channels are arranged on one side end surface of each second heat exchange plate sheet close to the front end plate, and the first heat exchange medium channels and the second heat exchange medium channels are of micro-channel structures.
According to some embodiments, the first heat exchange medium channels of the first heat exchange plates are arc-shaped channels or straight channels, and the second heat exchange medium channels of the second heat exchange plates are vertical channels or inclined channels.
According to some embodiments, the extending direction of the second heat exchange medium channels is perpendicular to the extending direction of the first heat exchange medium channels to form a cross flow pattern or the extending direction of the second heat exchange medium channels is opposite to the extending direction of the first heat exchange medium channels to form a counter flow pattern.
According to some embodiments, the first heat exchange medium channel is a single-pass channel or a two-pass channel or a multi-pass channel, and the second heat exchange medium channel is a single-pass channel.
According to some embodiments, a liquid inlet hole is formed in one side of a liquid inlet port of the first heat exchange medium channel of the first heat exchange plate, a liquid outlet hole is formed in one side of a liquid outlet port of the first heat exchange medium channel of the first heat exchange plate, and liquid inlet holes and liquid outlet holes are formed in two sides of the plurality of second heat exchange medium channels of the second heat exchange plate respectively.
According to some embodiments, the liquid inlet hole and the liquid outlet hole of the first heat exchange plate and the liquid inlet hole and the liquid outlet hole of the second heat exchange plate are of a triangular structure or a rectangular structure, the liquid inlet holes of the plurality of first heat exchange plates and the liquid inlet holes of the plurality of second heat exchange plates are mutually overlapped to form a liquid inlet channel, and the liquid outlet holes of the plurality of first heat exchange plates and the liquid outlet holes of the plurality of second heat exchange plates are mutually overlapped to form a liquid outlet channel.
According to some embodiments, the first heat exchanger plate and the second heat exchanger plate have a fan-shaped structure or a trapezoid structure, the thickness of the first heat exchanger plate and the second heat exchanger plate is 1 to 3 mm, the width of the first heat exchanger medium channel and the second heat exchanger medium channel is 1.2 to 4.7 mm, the pitch of the first heat exchanger medium channel and the second heat exchanger medium channel is 1.5 to 5 mm, and the channel depth of the first heat exchanger plate and the second heat exchanger plate is 0.7 to 2.7 mm.
According to another aspect of the present invention, there is also provided a method of manufacturing a heat exchanger, including the steps of: firstly, machining a plate to form a front end plate, a plurality of first heat exchange plates, a plurality of second heat exchange plates and a rear end plate respectively; welding and machining the front end plate, the plurality of first heat exchange plates, the plurality of second heat exchange plates and the rear end plate to form a core body module; and step three, assembling the plurality of core modules to form the integral structure of the heat exchanger.
According to some embodiments, step one is in particular: cutting and shaping the plate, and performing burr treatment, cleaning and finish treatment to respectively form a front end plate, a plurality of first heat exchange plates, a plurality of second heat exchange plates and a rear end plate; respectively processing a first heat exchange medium channel of a first heat exchange plate and a second heat exchange medium channel of a second heat exchange plate by adopting a processing center, wherein the diameter of a cutter for processing is 0.5-2 mm, the processing depth is 0.5-1.2 mm, the cutting feed is 0.1mm, the feeding speed is 0-1500 r/min, and the rotating speed is 0-3000 r/min; and performing burr treatment, cleaning and drying on the front end plate, the first heat exchange plates, the second heat exchange plates and the rear end plate.
According to some embodiments, step two is specifically: fusion welding assembly is carried out on the front end plate, the first heat exchange plates, the second heat exchange plates and the rear end plate, and preparation is made for vacuum diffusion welding; putting the assembled front end plate, the plurality of first heat exchange plates, the plurality of second heat exchange plates and the rear end plate into a vacuum diffusion welding furnace, and performing vacuum diffusion welding to form a core body module, wherein the process mainly comprises the steps of firstly raising the temperature of the vacuum diffusion welding furnace to 1100 ℃, consuming 12 hours, then preserving heat for 30 hours, then cooling to 150 ℃, and consuming 55 hours; performing outline rough machining on the core body module, and performing a pressing test; and pressing, cleaning and drying the core body module.
The invention has the beneficial effects that:
1. the first heat exchange medium channel of the first heat exchange plate and the second heat exchange medium channel of the second heat exchange plate of the heat exchanger are in micro channel structure forms, and are arranged to form cross flow, counter flow and other forms, so that the heat exchange efficiency of the heat exchanger can be improved, the heat exchanger can meet the requirements as an intercooler, and the overall efficiency of a gas turbine is ensured.
2. The heat exchanger provided by the invention is processed by adopting the titanium alloy material, and has good corrosion resistance, so that the corrosion of the marine environment is prevented.
Drawings
Fig. 1 is a schematic structural view of a heat exchanger according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a core module of the heat exchanger of FIG. 1;
FIG. 3 is a schematic structural view of the front end plate of the core module of FIG. 2;
fig. 4 is a schematic structural view of a first heat exchanger plate of the core module in fig. 2;
fig. 5 is a schematic structural view of a second heat exchanger plate of the core module in fig. 2;
FIG. 6 is a schematic structural view of the rear end plate of the core module of FIG. 2;
FIG. 7 is a schematic view of an exploded structure of the core module of FIG. 2;
fig. 8 is a schematic structural view of a first heat exchanger plate of a heat exchanger according to a second embodiment of the invention;
fig. 9 is a schematic structural view of a first heat exchanger plate and a second heat exchanger plate of a heat exchanger according to a third embodiment of the invention;
fig. 10 is a schematic structural view of a first heat exchanger plate and a second heat exchanger plate of a heat exchanger according to a fourth embodiment of the invention.
Detailed Description
Certain embodiments of the invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, a heat exchanger 100 according to an embodiment of the present invention has an overall annular structure including a plurality of core modules 10. In this embodiment, the heat exchanger 100 includes 10 core modules 10 having the same shape and structure. It will be appreciated that the heat exchanger 100 may also be divided into 4 equal parts or 6 equal parts or 8 equal parts into core modules, i.e. the heat exchanger 100 may also comprise 4 or 6 or 8 core modules 10 of identical shape and construction. In this embodiment, the core module 10 has a fan-shaped structure. It will be appreciated that the core module 10 may also have other configurations, such as a trapezoidal configuration.
As shown in fig. 2, the core module 10 includes a front end plate 11, a plurality of first heat exchanger plates 12, a plurality of second heat exchanger plates 13, and a rear end plate 14. The first heat exchange plates 12 and the second heat exchange plates 13 are sequentially arranged between the front end plate 11 and the rear end plate 14 at intervals. The front end plate 11, the first heat exchange plate 12, the second heat exchange plate 13 and the rear end plate 14 are connected with each other in a welding mode. It is understood that the first heat exchanger plates 12 and the second heat exchanger plates 13 may also be arranged in other ways, such as ABB, i.e. one first heat exchanger plate 12 is arranged first, then two second heat exchanger plates 13 are arranged, and so on.
It can be understood that the front end plate 11, the plurality of first heat exchanger plates 12, the plurality of second heat exchanger plates 13 and the rear end plate 14 of the core module 10 may be made of a titanium alloy material or a nickel-based corrosion-resistant alloy material, and have good corrosion resistance so as to prevent corrosion in the marine environment. The titanium alloy material can be Ti-6A1-4V (TC4), Ti-5A1-2.5Sn (TA7) or industrial pure titanium (TA1, TA2 and TA 3). The nickel-based corrosion-resistant alloy can be Hastelloy or Ni-Cu alloy.
In this embodiment, the first heat exchange medium is a liquid, such as water. The second heat exchange medium is a gas, such as air. The first heat exchange medium flows through the first heat exchanger plate 12 and the second heat exchange medium flows through the second heat exchanger plate 13, in such a way that heat exchange is achieved, i.e. the first heat exchange medium cools the second heat exchange medium.
As shown in fig. 3, the front end plate 11 has a fan-shaped structure, and the end surface thereof is provided with a first heat exchange medium inlet 112 and a first heat exchange medium outlet 114. A liquid inlet pipe 15 is welded at a first heat exchange medium inlet 112 of the front end plate 11, and a liquid outlet pipe 16 is welded at a first heat exchange medium outlet 114 of the front end plate 11. The first heat exchange medium enters the core module 10 through the liquid inlet pipe 15 and the first heat exchange medium inlet 112 in sequence, and is discharged through the first heat exchange medium outlet 114 and the liquid outlet pipe 16 in sequence after being circulated.
As shown in fig. 4, the first heat exchange plate 12 is of a fan-shaped structure, a plurality of first heat exchange medium channels 122 are disposed on one side end surface of the first heat exchange plate close to the front end plate 11, a liquid inlet hole 124 is disposed on one side of a liquid inlet port 1222 of the first heat exchange medium channel 122, and a liquid outlet hole 126 is disposed on one side of a liquid outlet port 1224 of the first heat exchange medium channel 122. The first heat exchange medium respectively flows through the plurality of first heat exchange medium channels 122, namely, the first heat exchange medium enters from the liquid inlet port 1222 of the first heat exchange medium channel 122, and after passing through the first heat exchange medium channel 122, the first heat exchange medium is discharged from the liquid outlet port 1224 of the first heat exchange medium channel 122. In this embodiment, the first heat exchange medium channel 122 is an arc-shaped channel, which can realize enhanced heat exchange, thereby improving heat exchange performance. It is to be understood that the first heat exchange medium channels 122 may also be straight channels. The first heat exchange medium channel 122 is a micro channel structure, the cross section of which may be rectangular, square or semicircular, and the micro channel may increase the heat exchange area and increase the flow rate of the heat exchange medium, thereby realizing the enhanced heat exchange. In this embodiment, the thickness of the first heat exchanger plate 12 is 1 to 3 mm. The width of the first heat exchange medium channels 122 is 1.2 to 4.7 mm, the pitch is 1.5 to 5 mm, and the channel depth is 0.7 to 2.7 mm. The liquid inlet hole 124 corresponds to the first heat exchange medium inlet 112 of the front end plate 11. The liquid inlet hole 124 has a triangular structure. The liquid outlet hole 126 corresponds to the first heat exchange medium outlet 114 of the front end plate 11. The liquid outlet holes 126 are triangular structures. It is understood that the first heat exchanger plates 12 may also have other configurations, such as a trapezoidal configuration.
As shown in fig. 5, the second heat exchange plate 13 is of a fan-shaped structure, a plurality of second heat exchange medium channels 132 are disposed on an end surface of one side of the second heat exchange plate close to the front end plate 11, and a liquid inlet hole 134 and a liquid outlet hole 136 are respectively disposed on two sides of the plurality of second heat exchange medium channels 132. The second heat exchange medium respectively flows through the plurality of second heat exchange medium channels 132, that is, the second heat exchange medium enters from the inlet port 1322 of the second heat exchange medium channel 132, and after passing through the second heat exchange medium channel 132, the second heat exchange medium is discharged from the outlet port 1324 of the second heat exchange medium channel 132. In this embodiment, the second heat exchange medium channel 132 is a vertical channel to reduce the resistance of the second heat exchange medium and enable the second heat exchange medium to pass through smoothly. The second heat exchange medium channel 132 is a minute channel structure, and the sectional shape thereof may be rectangular, square, or semicircular. In this embodiment, the thickness of the second heat exchanger plate 13 is 1 to 3 mm. The width of the second heat exchange medium channels 132 is 1.2 to 4.7 mm, the pitch is 1.5 to 5 mm, and the channel depth is 0.7 to 2.7 mm. The liquid inlet hole 134 corresponds to the liquid inlet hole 124 of the first heat exchanger plate 12. The liquid inlet 134 has a triangular structure. The liquid outlet holes 136 correspond to the liquid outlet holes 126 of the first heat exchange plate 12. The liquid outlet 136 is a triangular structure. It is understood that the second heat exchanger plates 13 may also have other configurations, such as a trapezoidal configuration.
As shown in fig. 6, the rear end plate 14 is disposed opposite to the front end plate 11, and serves as both side end plates of the core module 10 together with the front end plate 11, with the plurality of first heat exchanger plates 12 and the plurality of second heat exchanger plates 13 interposed therebetween. The rear end plate 14 is of a fan-shaped configuration.
As shown in fig. 7, in this embodiment, after the plurality of first heat exchange plate sheets 12 and the plurality of second heat exchange plate sheets 13 are welded into a whole, the liquid inlet holes 124 of the plurality of first heat exchange plate sheets 12 and the liquid inlet holes 134 of the plurality of second heat exchange plate sheets 13 are overlapped with each other to form the liquid inlet channel 17, and similarly, the liquid outlet holes 126 of the plurality of first heat exchange plate sheets 12 and the liquid outlet holes 136 of the plurality of second heat exchange plate sheets 13 are overlapped with each other to form the liquid outlet channel 18.
As shown in fig. 7, in the present embodiment, each core module 10 is used as a separate module of the heat exchanger 100 to perform heat exchange. The specific heat exchange process is as follows:
first, a first heat exchange medium enters the liquid inlet channel 17 through the liquid inlet pipe 15 and the first heat exchange medium inlet 112 in sequence, the liquid inlet channel 17 serves as a liquid collector to temporarily store the first heat exchange medium at this time, then the first heat exchange medium flows through the plurality of first heat exchange plates 12 respectively and enters the liquid outlet channel 18, the liquid outlet channel 18 serves as a liquid collector to temporarily store the first heat exchange medium at this time, and finally the first heat exchange medium is discharged from the liquid outlet channel 18 through the first heat exchange medium outlet 114 and the liquid outlet pipe 16 in sequence. While the first heat exchange medium flows through the plurality of first heat exchange plates 12, the second heat exchange medium flows through the plurality of second heat exchange plates 13, respectively, so that heat exchange between the first heat exchange medium and the second heat exchange medium is realized.
As shown in fig. 4 and fig. 5, in this embodiment, the first heat exchange medium channels 122 of the first heat exchange plate 12 are arc-shaped channels, the second heat exchange medium channels 132 of the second heat exchange plate 13 are vertical channels, and the extending direction of the second heat exchange medium channels 132 is perpendicular to the extending direction of the first heat exchange medium channels 122, so as to form a cross-flow form, which can realize enhanced heat exchange, thereby improving heat exchange performance. In this embodiment, the first heat exchange medium channel 122 is a single-pass channel. It is understood that the first heat exchange medium channels 222 of the first heat exchange plate 22 can also be two-flow channels, or multiple-flow channels, as shown in fig. 8, to enhance the heat exchange and further improve the heat exchange performance. In this embodiment, the extending direction of the second heat exchange medium channels 132 is perpendicular to the extending direction of the first heat exchange medium channels 122, forming a cross flow pattern. It is understood that as shown in fig. 9, the second heat exchange medium channels 332 of the second heat exchange plate 33 may also extend in a direction opposite to the direction in which the first heat exchange medium channels 322 of the first heat exchange plate 32 extend, in a counter flow manner, to enhance heat exchange, thereby further improving the heat exchange performance. In this embodiment, the second heat exchange medium channel 132 of the second heat exchange plate 13 is a vertical channel, and the liquid inlet hole 134 and the liquid outlet hole 136 are both triangular structures. It can be understood that, as shown in fig. 10, the second heat exchange medium channel 432 of the second heat exchange plate 43 may also be an inclined channel, the liquid inlet hole 434 and the liquid outlet hole 436 are both rectangular structures, and correspondingly, the liquid inlet hole 424 and the liquid outlet hole 426 of the first heat exchange plate 42 are also both rectangular structures, and compared with a triangular structure, the rectangular structure can better distribute the flow rate of the first heat exchange medium stored in the liquid inlet channel, so that the flow rate in the first heat exchange medium channel 422 is uniformly distributed to enhance heat exchange, thereby further improving heat exchange performance.
The first heat exchange medium channel 122 of the first heat exchange plate 12 and the second heat exchange medium channel 132 of the second heat exchange plate 13 of the heat exchanger 100 according to the embodiment of the present invention are all in a micro channel structure form, and are arranged to form a cross flow, a counter flow, and the like, so that the heat exchange efficiency of the heat exchanger 100 can be improved, and the heat exchanger 100 can meet the requirements as an intercooler, thereby ensuring the overall efficiency of the gas turbine.
The method for manufacturing the heat exchanger 100 of the embodiment of the present invention includes the steps of:
firstly, machining a plate to form a front end plate, a plurality of first heat exchange plates, a plurality of second heat exchange plates and a rear end plate respectively;
firstly, the plate is cut, shaped, processed by burrs, cleaned and finished to form a front end plate, a plurality of first heat exchange plates, a plurality of second heat exchange plates and a rear end plate. Wherein, the cutting and the shaping are carried out in a processing center; the burr treatment is carried out by ultrasonic wave, and can also be carried out by freezing or thermal explosion; the cleaning is carried out by adopting ultrasonic equipment, and the cleaning is carried out by acid, alkali and acetone solution, and then the heating and drying are carried out in a drying furnace; the finish treatment adopts the mode of the composite energy of activation energy and impact energy to treat, so that the surface roughness Ra of the front end plate, the first heat exchange plates, the second heat exchange plates and the rear end plate is less than 0.05um, the wear resistance is improved by more than 50%, and the corrosion resistance is improved by more than 50%.
Secondly, a machining center is adopted to machine a first heat exchange medium channel of the first heat exchange plate and a second heat exchange medium channel of the second heat exchange plate respectively. Wherein the diameter of the cutter for processing is 0.5-2 mm, the processing depth is 0.5-1.2 mm, the cutting depth is 0.1mm, the feeding speed is 0-1500 r/min, and the rotating speed is 0-3000 r/min;
and finally, performing burr treatment, cleaning and drying on the front end plate, the first heat exchange plates, the second heat exchange plates and the rear end plate again.
Welding and machining the front end plate, the plurality of first heat exchange plates, the plurality of second heat exchange plates and the rear end plate to form a core body module;
firstly, fusion welding assembly is carried out on the front end plate, the first heat exchange plates, the second heat exchange plates and the rear end plate, and preparation is made for vacuum diffusion welding.
Secondly, the assembled front end plate, the plurality of first heat exchange plates, the plurality of second heat exchange plates and the rear end plate are placed into a vacuum diffusion welding furnace for vacuum diffusion welding to form the core body module. The process mainly comprises the following steps: (1) firstly, raising the temperature of a vacuum diffusion welding furnace to 1100 ℃, and consuming 12 hours; (2) then preserving the heat for 30 hours; (3) then the temperature is reduced to 150 ℃ and the time is 55 hours.
Then, the core body module is subjected to outline roughing and a compression test. And if the pressure requirement is met, performing contour linear cutting, external end socket and flange fusion welding, contour machining, grinding and the like on the core body module to finish the integral processing of the core body module. And if leakage exists, the core module is placed into a vacuum diffusion welding furnace for re-welding. If the heat exchanger is thick, for example greater than 480mm, it is necessary to separate it into two parts for separate diffusion welding in the previous step, and then to weld them together by fusion welding in this step.
And finally, pressing, cleaning and drying the core body module.
And step three, assembling the plurality of core modules to form the integral structure of the heat exchanger.
It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Furthermore, the above definitions of the various elements and methods are not limited to the specific structures, shapes, or configurations shown in the examples.
It is also noted that the illustrations herein may provide examples of parameters that include particular values, but that these parameters need not be exactly equal to the corresponding values, but may be approximated to the corresponding values within acceptable error tolerances or design constraints.
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 only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
Claims (10)
1. The utility model provides a heat exchanger, includes a plurality of core modules, the core module includes front end plate, a plurality of first heat transfer slab, a plurality of second heat transfer slab and back end plate, a plurality of first heat transfer slab reach a plurality of second heat transfer slab set up in the front end plate with between the back end plate, a serial communication port, being close to of first heat transfer slab a side end face of front end plate is equipped with many first heat transfer medium passageways, being close to of second heat transfer slab a side end face of front end plate is equipped with many second heat transfer medium passageways, first heat transfer medium passageway reaches second heat transfer medium passageway is small access structure.
2. The heat exchanger according to claim 1, characterized in that the first heat exchange medium channels of the first heat exchange plates are arc-shaped channels or straight channels and the second heat exchange medium channels of the second heat exchange plates are vertical channels or inclined channels.
3. The heat exchanger according to claim 2, wherein the second heat exchange medium channels extend in a cross-flow pattern perpendicular to the first heat exchange medium channels or in a counter-flow pattern opposite to the first heat exchange medium channels.
4. The heat exchanger according to claim 2 or 3, wherein the first heat exchange medium channel is a single-pass channel or a two-pass channel or a multi-pass channel, and the second heat exchange medium channel is a single-pass channel.
5. The heat exchanger according to claim 1, wherein a liquid inlet hole is formed in one side of a liquid inlet port of the first heat exchange medium channel of the first heat exchange plate, a liquid outlet hole is formed in one side of a liquid outlet port of the first heat exchange medium channel of the first heat exchange plate, and a liquid inlet hole and a liquid outlet hole are formed in two sides of the plurality of second heat exchange medium channels of the second heat exchange plate respectively.
6. The heat exchanger of claim 5, wherein the liquid inlet and outlet holes of the first heat exchange plate and the liquid inlet and outlet holes of the second heat exchange plate are triangular or rectangular, the liquid inlet holes of the first heat exchange plates and the liquid inlet holes of the second heat exchange plates are overlapped with each other to form a liquid inlet channel, and the liquid outlet holes of the first heat exchange plates and the liquid outlet holes of the second heat exchange plates are overlapped with each other to form a liquid outlet channel.
7. The heat exchanger according to claim 1, wherein the first heat exchange plate and the second heat exchange plate are of a fan-shaped structure or a trapezoid structure, the thickness of the first heat exchange plate and the second heat exchange plate is 1 to 3 mm, the width of the first heat exchange medium channel and the second heat exchange medium channel is 1.2 to 4.7 mm, the pitch of the first heat exchange medium channel and the second heat exchange medium channel is 1.5 to 5 mm, and the channel depth of the first heat exchange medium channel and the second heat exchange medium channel is 0.7 to 2.7 mm.
8. A method of manufacturing a heat exchanger according to any one of claims 1 to 7, comprising the steps of:
firstly, machining a plate to form a front end plate, a plurality of first heat exchange plates, a plurality of second heat exchange plates and a rear end plate respectively;
welding and machining the front end plate, the plurality of first heat exchange plates, the plurality of second heat exchange plates and the rear end plate to form a core body module;
and step three, assembling the plurality of core modules to form the integral structure of the heat exchanger.
9. The manufacturing method according to claim 8, wherein the first step is specifically:
cutting and shaping the plate, and performing burr treatment, cleaning and finish treatment to respectively form a front end plate, a plurality of first heat exchange plates, a plurality of second heat exchange plates and a rear end plate;
respectively processing a first heat exchange medium channel of a first heat exchange plate and a second heat exchange medium channel of a second heat exchange plate by adopting a processing center, wherein the diameter of a cutter for processing is 0.5-2 mm, the processing depth is 0.5-1.2 mm, the cutting feed is 0.1mm, the feeding speed is 0-1500 r/min, and the rotating speed is 0-3000 r/min;
and performing burr treatment, cleaning and drying on the front end plate, the first heat exchange plates, the second heat exchange plates and the rear end plate.
10. The manufacturing method according to claim 8, wherein the second step is specifically:
fusion welding assembly is carried out on the front end plate, the first heat exchange plates, the second heat exchange plates and the rear end plate, and preparation is made for vacuum diffusion welding;
putting the assembled front end plate, the plurality of first heat exchange plates, the plurality of second heat exchange plates and the rear end plate into a vacuum diffusion welding furnace, and performing vacuum diffusion welding to form a core body module, wherein the process mainly comprises the steps of firstly raising the temperature of the vacuum diffusion welding furnace to 1100 ℃, consuming 12 hours, then preserving heat for 30 hours, then cooling to 150 ℃, and consuming 55 hours;
performing outline rough machining on the core body module, and performing a pressing test;
and pressing, cleaning and drying the core body module.
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| CN201811364687.1A CN111197937A (en) | 2018-11-16 | 2018-11-16 | Heat exchanger and manufacturing method thereof |
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| CN201811364687.1A CN111197937A (en) | 2018-11-16 | 2018-11-16 | Heat exchanger and manufacturing method thereof |
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| CN105737646A (en) * | 2016-03-11 | 2016-07-06 | 江苏远卓设备制造有限公司 | Plate heat exchanger and manufacturing technology thereof |
| CN106584045A (en) * | 2017-02-24 | 2017-04-26 | 江阴市亚龙换热设备有限公司 | Production process for plate heat exchanger |
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