CN112432526A - Plate-fin heat exchanger core - Google Patents
Plate-fin heat exchanger core Download PDFInfo
- Publication number
- CN112432526A CN112432526A CN202011453977.0A CN202011453977A CN112432526A CN 112432526 A CN112432526 A CN 112432526A CN 202011453977 A CN202011453977 A CN 202011453977A CN 112432526 A CN112432526 A CN 112432526A
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- Prior art keywords
- plate
- seal
- extrusion
- assembly
- welding
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
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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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/10—Arrangements for sealing the margins
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention belongs to the field of plate-fin heat exchangers, in particular to a plate-fin heat exchanger core, which comprises side plates, heat dissipation belts, cooling pipe assemblies and seal assemblies, wherein a plurality of heat dissipation belts and a plurality of cooling pipe assemblies are arranged between the side plates at two sides, and the heat dissipation belts and the cooling pipe assemblies are alternately arranged; the cooling pipe assembly comprises a plate-fin type single-hole pipe and an inner fin welded in the plate-fin type single-hole pipe; the two ends of each heat dissipation belt are provided with seal assemblies, each seal assembly comprises an extrusion seal and a welding wire, welding wire grooves are formed in the two sides of the end face of each extrusion seal respectively, each welding wire groove is filled with the welding wire, and the welding wires melt during brazing and then weld and seal the extrusion seals and the adjacent cooling pipe assemblies to form cores. The invention reduces the types and the number of parts of the core body of the prior plate-fin heat exchanger, improves the assembly efficiency, facilitates the size control of the core body, is beneficial to the step-by-step production of a production line, reduces the leakage rate of the core body of the plate-fin heat exchanger and improves the appearance of a product.
Description
Technical Field
The invention belongs to the field of plate-fin heat exchangers, and particularly relates to a core body of a plate-fin heat exchanger.
Background
As shown in fig. 1 to 4, the parts required for assembling the core of the conventional plate-fin heat exchanger include a side plate 1, aluminum strip partition plates 2, a strip seal 3, a heat dissipation strip 4 and an internal channel 5, wherein the internal channel 5 includes two strip seals 501, an upper aluminum strip partition plate 2, a lower aluminum strip partition plate 2 and an inner fin. The assembly sequence of the core of the existing plate-fin heat exchanger is that a side plate 1, an aluminum strip partition plate 2 and a heat dissipation belt 4 are assembled to the side plate 1 on the other side, short sealing strips 3 are placed at two ends of the heat dissipation belt 4, one aluminum strip partition plate 2 forming an internal channel 5 is arranged, long sealing strips 501 are placed at two ends of the aluminum strip partition plate 2, an inner fin 6 is placed between the two long sealing strips 501, the other aluminum strip partition plate 2 forming the internal channel 5 is placed, and circulation is started from the heat dissipation belt 4. The existing plate-fin heat exchanger core has more types and quantities of parts. During assembly, an operator needs to continuously change the types of parts, which wastes time and labor; and need place the part in the widest one end of core during the assembly, must follow spacing frock top promptly and place the part downwards, can't carry out the bottom side and put the assembly. Simultaneously, the flatness of the core body and the size of an angular line are controlled more difficultly, and the requirement on a tool clamp is higher. However, the brazing leakage rate due to the loose fit of the internal channels is still high, which seriously affects the final appearance of the product assembly. Furthermore, the existing plate-fin heat exchanger core body welds and seals the internal channel 5 by melting the coating layer of the aluminum strip partition plate 2, and meanwhile, the welding and sealing of the internal channel 5 and the short seal strip 3 are ensured. The whole brazing process has high requirements on the fitting flatness between parts, the problem of core leakage can be caused once the fitting is not tight, and the appearance quality of the product and the use performance of the product are directly influenced.
On the other hand, the whole core part assembly is completely concentrated on the assembly station, and the assembly line distribution production is not facilitated.
Disclosure of Invention
The invention aims to provide a plate-fin heat exchanger core, which aims to solve the problems that the types and the number of all-aluminum radiator plate-fin structure parts are various, the assembly is difficult, the assembly efficiency is low, the core leakage rate is high, the refined production cannot be realized and the like.
The purpose of the invention is realized by the following technical scheme:
the heat dissipation belt comprises side plates, a heat dissipation belt, a cooling pipe assembly and a seal assembly, wherein a plurality of heat dissipation belts and a plurality of cooling pipe assemblies are arranged between the side plates on two sides, and the heat dissipation belts and the cooling pipe assemblies are alternately arranged; the cooling pipe assembly comprises a plate-fin single-hole pipe and the inner fins welded in the plate-fin single-hole pipe; and two ends of each heat dissipation belt are respectively provided with a seal assembly, each seal assembly comprises an extrusion seal and a welding assembly, the two sides of the end face of each extrusion seal are respectively provided with the welding assemblies, and the welding assembly on each side is used for welding and sealing the extrusion seal and the adjacent cooling pipe assembly during brazing so as to form a core.
Wherein: the welding assembly comprises a welding wire and welding wire grooves, the two sides of the end face of the extrusion seal strip are respectively provided with the welding wire grooves, each welding wire groove is internally provided with the welding wire, and the welding wire melts during brazing and then welds and seals the extrusion seal strip and the adjacent cooling pipe assembly.
And a clamping groove is arranged at one outward end of the end face of the extrusion seal, and is clamped on the end face of the adjacent plate-fin single-hole tube.
And welding wire grooves on two sides of the extrusion seal are symmetrically arranged, and welding wires in the welding wire grooves on each side are used for being welded and sealed with the cooling pipe assembly on the same side.
The welding assembly comprises an extrusion groove and a partition plate/double-coating aluminum strip, the two sides of the end face of the extrusion seal are respectively provided with the extrusion groove, the partition plate/double-coating aluminum strip on each side is extruded in the extrusion groove and further fixed with the extrusion seal, when the partition plate is used as a partition plate, the inner surface and the outer surface of the partition plate are provided with brazing filler metal, and the brazing filler metal is melted during brazing so that the partition plate is respectively welded and sealed with the extrusion seal and the adjacent cooling pipe assembly; in the case of a double-coated aluminum strip, the double coating of the aluminum strip melts during brazing so that the aluminum strip is welded and sealed with the extrusion seal and the adjacent cooling tube assembly respectively.
The two extrusion grooves are formed in each side, two ends of the partition plate/double-coating aluminum strip are bent towards one side of the extrusion seal strip and then bent outwards, and the bent parts are extruded in the extrusion grooves.
The plate-fin type single-hole pipe is of an integrally formed structure.
The end face of the plate-fin type single-hole tube is rectangular, and the inner surfaces of the left side and the right side of the rectangle are inwards provided with tip portions.
The invention has the advantages and positive effects that:
1. the design of the plate-fin type single-hole tube replaces an internal channel formed by a partition plate and a long seal strip in the prior art, parts are simple, the number of the parts is changed from four to one, the types and the number of the parts are reduced, the control and the placement of the assembled parts are facilitated, and the operation of operators is facilitated; on the other hand, the plate-fin single-hole tube reduces the insecure matching of the long seal and the partition plate, solves the leakage problem after welding, and reduces the leakage rate of the internal channel.
2. The cooling pipe assembly is assembled in advance, the plate-fin type single-hole pipe and the inner fins are assembled in advance, the cooling pipe assembly only needs to be assembled during assembly, the operation of placing the partition plates, the long sealing strips, the inner fins and the partition plates during the assembly of the conventional plate-fin type core body is replaced, parts are assembled step by step, lean distribution production is facilitated, meanwhile, the assembly step is changed from five steps to one step, and the assembly efficiency is improved.
3. According to the seal assembly composed of the extruded seal and the welding wire, the seal and the cooling pipe assembly are connected and sealed through the melting welding of the welding wire in the brazing furnace, the welding firmness is improved, and the leakage rate of the plate-fin core assembly is reduced.
4. On one hand, the brazing clamp has no more strict requirements, and the brazing clamp does not need to be specially manufactured, so that the production cost of the clamp is reduced; on the other hand, the plate-fin heat exchanger core can be directly brazed by using an intelligent continuous inert gas brazing furnace used in the existing pipe-belt type core brazing, and new brazing equipment is not required to be added.
Drawings
FIG. 1 is a schematic structural diagram of a conventional plate-fin heat exchanger core;
FIG. 2 is an exploded view of the internal passages in a prior art plate fin heat exchanger core;
FIG. 3 is an end view of a long and short seal in a prior art plate fin heat exchanger core;
FIG. 4 is a schematic diagram of the internal passages in a conventional plate fin heat exchanger core;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a schematic structural view of a cooling tube assembly according to the present invention;
FIG. 7 is a schematic structural view of the plate-fin type single-hole tube shown in FIG. 6;
FIG. 8 is a schematic structural view of a seal assembly of one construction of the present invention;
FIG. 9 is a schematic view of the pinch seal of FIG. 8;
FIG. 10 is a schematic structural view of a seal assembly of another construction of the present invention;
wherein: 1 is the curb plate, 2 is the aluminium strip baffle, 3 is the short strip of paper used for sealing, 4 is the heat dissipation area, 5 is interior passageway, 501 is long strip of paper used for sealing, 6 is interior fin, 7 is the cooling tube assembly, 701 is the plate fin formula haplopore pipe, 8 is the strip of paper used for sealing assembly, 801 is the extrusion strip of paper used for sealing, 802 is the welding wire, 803 is the welding wire groove, 804 is the draw-in groove, 9 is the sharp portion.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
As shown in fig. 5 to 9, the core of the plate-fin heat exchanger of the present invention includes side plates 1, heat dissipation bands 4, cooling tube assemblies 7, and seal assemblies 8, wherein a plurality of heat dissipation bands 4 and a plurality of cooling tube assemblies 7 are disposed between the side plates 1 on both sides, and the heat dissipation bands 4 and the cooling tube assemblies 7 are alternately disposed.
The cooling tube assembly 7 of the embodiment comprises a plate-fin type single-hole tube 701 and an inner fin 6 welded in the plate-fin type single-hole tube 701, wherein the plate-fin type single-hole tube 701 is of an integrally formed structure, the sealing performance is obviously higher than that of an internal channel 5 welded by matching with an existing core body, and the leakage rate of the core body is reduced; the end face of the plate-fin single-hole tube 701 of the embodiment is rectangular, the inner surfaces of the left side and the right side of the rectangle are provided with tip portions 9 inwards, and the design of the tip portions 9 is used for pressing the inner fins 6 so as to ensure that the inner fins 6 are welded better.
Two ends of each heat dissipation belt 4 are provided with seal assemblies 8, each seal assembly 8 comprises an extrusion seal 801 and a welding component, the two sides of the end face of the extrusion seal 801 are respectively provided with the welding component, and the welding component on each side welds and seals the extrusion seal 801 and the adjacent cooling pipe assembly 7 during brazing, so that a core body is formed.
The welding assembly of the embodiment comprises a welding wire 802 and a welding wire groove 803, wherein a clamping groove 804 is arranged at one end, facing outwards, of the extrusion seal 801, and the clamping groove 804 is clamped on the end face of the adjacent plate-fin single-hole tube 701; the two sides of the end face of the extrusion seal 801 are respectively provided with a welding wire groove 803, the welding wire grooves 803 on the two sides of the extrusion seal 801 of the present embodiment are symmetrically arranged, the welding wire grooves 803 are located within the end face of the plate-fin type single-hole tube 701, each welding wire groove 803 contains a welding wire 802, and the welding wires 802 are melted during brazing to further weld and seal the extrusion seal 801 and the adjacent cooling tube assembly 7, so as to form a core body. The material of the seal assembly 8 of the present embodiment is 3003 aluminum material.
The installation and the working principle of the embodiment are as follows:
the whole core assembly of this embodiment can be from operator's forward, and curb plate 1, heat dissipation area 4 and cooling tube assembly 7 are put in proper order to the positive bottom of core promptly, then heat dissipation area 4 and cooling tube assembly 7 circulation, and the strip of paper used for sealing assembly 8 is installed respectively at the both ends of every heat dissipation area 4 again after the core assembly is accomplished until accomplishing putting of last curb plate 1. This embodiment part kind and quantity reduce, put from low to high directly putting in turn, convenient and fast promotes assembly efficiency, does benefit to assembly line production.
The only parts to be assembled in this embodiment are the cooling tube assembly assembled by the plate-fin type single-hole tube 701 and the inner fin 6, and the seal assembly 8 assembled by the extrusion seal 801, the welding wire 802 and the welding wire groove 803. The plate-fin single-hole tube 701 and the inner fins 6 are assembled into a cooling tube assembly 7 to replace the internal passages 5 of the conventional plate-fin core.
The plate-fin heat exchanger core of the present embodiment ensures the welding seal of the extruded seal 801 and the cooling tube assembly 7 by the melting and welding of the welding wire 802 inside the seal assembly 8 during the brazing process. The sealing performance of the integrated structure of the plate-fin single-hole pipe 801 is obviously higher than that of an internal channel which is welded in a matched mode, and the leakage rate of the plate-fin core body is reduced.
Example two
As shown in fig. 5 to 7 and fig. 10, the present embodiment is different from the first embodiment in that: the welding assembly of the present embodiment includes two extrusion grooves 805 and two partition/double-coated aluminum strips 806, the two sides of the end surface of the extrusion seal 801 are respectively provided with the extrusion grooves 805, each side of the present embodiment has two extrusion grooves 805, and the partition/double-coated aluminum strips 806 on each side are extruded in the extrusion grooves 805 and further fixed with the extrusion seal 801; both ends of the partition/double-coated aluminum strip 806 of this embodiment are bent toward one side of the extrusion seal 801, and then bent outward, and the bent portions are extruded in the extrusion grooves 805. When the partition plate is used, the inner surface and the outer surface of the partition plate are provided with brazing filler metal, and the brazing filler metal is melted during brazing so that the partition plate is respectively welded and sealed with the extrusion seal 801 and the adjacent cooling pipe assembly 7; in the case of a double-clad aluminum strip, the double cladding of the aluminum strip melts during brazing so that the aluminum strip is welded and sealed with the extrusion seal 801 and the adjacent cooling tube assembly 7. The only parts to be assembled in this embodiment are the cooling tube assembly assembled by the plate-fin type single-hole tube 701 and the inner fin 6, and the seal assembly 8 assembled by the extrusion seal 801, the extrusion groove 805 and the partition/double-clad aluminum strip 806. The plate-fin heat exchanger core of the present embodiment ensures the welding sealing of the partition/double-coated aluminum strip 806 with the extrusion seal 801 and the cooling tube assembly 7 respectively by the melting welding of the brazing filler metal on the partition/double-coated aluminum strip 806 with the brazing filler metal inside the seal assembly 8 during the brazing. The rest is the same as the first embodiment.
Claims (8)
1. The utility model provides a plate-fin heat exchanger core, includes curb plate, heat dissipation area, its characterized in that: the heat dissipation structure is characterized by further comprising cooling pipe assemblies (7) and sealing strip assemblies (8), wherein a plurality of heat dissipation belts (4) and a plurality of cooling pipe assemblies (7) are arranged between the side plates (1) on the two sides, and the heat dissipation belts (4) and the cooling pipe assemblies (7) are alternately arranged; the cooling pipe assembly (7) comprises a plate-fin type single-hole pipe (701) and the inner fins (6) welded in the plate-fin type single-hole pipe (701); each two ends of each heat dissipation belt (4) are provided with a seal assembly (8), each seal assembly (8) comprises an extrusion seal (801) and a welding assembly, the welding assemblies are arranged on two sides of the end face of each extrusion seal (801), and the welding assemblies on each side are used for welding and sealing the extrusion seal (801) and the adjacent cooling pipe assemblies (7) during brazing so as to form a core body.
2. The plate fin heat exchanger core of claim 1, wherein: the welding assembly comprises a welding wire (802) and a welding wire groove (803), the welding wire groove (803) is formed in each of two sides of the end face of the extrusion seal (801), each welding wire groove (803) is filled with the welding wire (802), and the welding wires (802) are melted during brazing and then seal the extrusion seal (801) and the adjacent cooling pipe assembly (7) in a welding mode.
3. The plate fin heat exchanger core of claim 2, wherein: one end, facing outwards, of the extrusion seal (801) is provided with a clamping groove (804), and the clamping groove (804) is clamped on the end face of the adjacent plate-fin type single-hole pipe (701).
4. The plate fin heat exchanger core of claim 2, wherein: welding wire grooves (803) on two sides of the extrusion seal (801) are symmetrically arranged, and welding wires (802) in the welding wire grooves (803) on each side are used for being welded and sealed with the cooling pipe assembly (7) on the same side.
5. The plate fin heat exchanger core of claim 1, wherein: the welding assembly comprises an extrusion groove (805) and a partition plate/double-coated aluminum strip (806), the two sides of the end face of the extrusion seal (801) are respectively provided with the extrusion groove (805), the partition plate/double-coated aluminum strip (806) on each side is extruded in the extrusion groove (805) and further fixed with the extrusion seal (801), when the partition plate is used, brazing filler metal is arranged on the inner surface and the outer surface of the partition plate, and the brazing filler metal is melted during brazing so that the partition plate is respectively welded and sealed with the extrusion seal (801) and the adjacent cooling pipe assembly (7); in the case of a double-clad aluminum strip, the double cladding of the aluminum strip melts during brazing so that the aluminum strip is welded and sealed with the extrusion seal (801) and the adjacent cooling tube assembly (7), respectively.
6. The plate fin heat exchanger core of claim 5, wherein: the number of the extrusion grooves (805) on each side is two, two ends of the partition plate/double-coated aluminum strip (806) are bent towards one side of the extrusion seal (801) and then bent outwards, and the bent parts are extruded in the extrusion grooves (805).
7. The plate fin heat exchanger core of claim 1, wherein: the plate-fin type single-hole pipe (701) is of an integrally formed structure.
8. The plate fin heat exchanger core of claim 1, wherein: the end face of the plate-fin type single-hole pipe (701) is rectangular, and the inner surfaces of the left side and the right side of the rectangle are inwards provided with tip portions (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453977.0A CN112432526A (en) | 2020-12-10 | 2020-12-10 | Plate-fin heat exchanger core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011453977.0A CN112432526A (en) | 2020-12-10 | 2020-12-10 | Plate-fin heat exchanger core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112432526A true CN112432526A (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011453977.0A Pending CN112432526A (en) | 2020-12-10 | 2020-12-10 | Plate-fin heat exchanger core |
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| Country | Link |
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| CN (1) | CN112432526A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921791A (en) * | 2023-09-15 | 2023-10-24 | 淄博市特种设备检验研究院 | Brazing forming treatment system for steel plate type radiator |
-
2020
- 2020-12-10 CN CN202011453977.0A patent/CN112432526A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921791A (en) * | 2023-09-15 | 2023-10-24 | 淄博市特种设备检验研究院 | Brazing forming treatment system for steel plate type radiator |
| CN116921791B (en) * | 2023-09-15 | 2023-11-14 | 淄博市特种设备检验研究院 | Brazing forming treatment system for steel plate type radiator |
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