CN215698691U - Tool for brazing water-air thin-wall heat exchanger - Google Patents
Tool for brazing water-air thin-wall heat exchanger Download PDFInfo
- Publication number
- CN215698691U CN215698691U CN202122397265.8U CN202122397265U CN215698691U CN 215698691 U CN215698691 U CN 215698691U CN 202122397265 U CN202122397265 U CN 202122397265U CN 215698691 U CN215698691 U CN 215698691U
- Authority
- CN
- China
- Prior art keywords
- rod
- brazing
- heat exchanger
- tool
- pressure
- 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 discloses a tool for brazing a water-air thin-wall heat exchanger, and belongs to the technical field of welding. The tool comprises an upper pressure rod structure, a lower pressure rod structure, a pressure plate, a positioning sleeve, a compression spring, a gasket, a compression nut and a middle pressure rod. The utility model can accurately adjust the pressing force of all welding points of the fin, simultaneously can prevent the workpiece from damaging and deforming due to the fact that excessive force is applied to the workpiece in the welding process, ensures the brazing effect, effectively prevents the workpiece from being damaged due to deformation, and ensures the welding quality of products.
Description
Technical Field
The utility model relates to the technical field of welding, in particular to a tool for brazing a water-air thin-wall heat exchanger.
Background
With the development of microelectronic technology, the power consumption of chips is higher and higher, and the traditional natural heat dissipation and forced air cooling methods cannot solve the heat dissipation problem of chips. Compared with air cooling, the liquid cooling efficiency is very high, and the liquid cooling method is an effective way for solving the problem of heat dissipation of the high-power chip. In order to solve the heat dissipation problem of the high-power chip, a small liquid cooling system is gradually used on electronic equipment. The pump takes the coolant liquid out of the liquid storage tank and flows into the inside of the liquid cooling shell of the liquid cooling electronic board card, the coolant liquid absorbs the temperature rise after the heat generated by the electronic device, the coolant liquid with the temperature rise flows out of the electronic board card and then enters the heat exchanger, the air with the lower temperature takes away the heat of the coolant liquid in the flowing process of the heat exchanger so as to achieve the purpose of reducing the temperature of the coolant liquid, and the coolant liquid with the reduced temperature flows into the liquid storage tank and enters the next cooling circulation. In the circulating work process of the small liquid cooling system, the electronic chip on the electronic board card is cooled, so that the electronic equipment can work normally and reliably.
The heat exchanger is a key component in a liquid cooling system and is an important component for realizing heat exchange between cooling liquid and air. The function of the heat exchanger is to exchange heat between the cooling liquid and air, and the cooling liquid with higher temperature in the heat exchanger is changed into cooling liquid with lower temperature and then flows out. Fins are welded to the outside of the liquid pipeline, and cooling air from the outside is blown to the fins. In the flowing process of hot cooling liquid in the liquid pipeline, cooling air flows around the fins, the heat of the cooling liquid is conducted to the fins through the wall of the liquid cooling pipeline, and the cooling air absorbs the heat, so that the aim of reducing the temperature of the cooling liquid is fulfilled.
The water-air thin-wall heat exchanger is a novel heat exchanger, the thickness of fins of the heat exchanger is only 0.1-0.2 mm, and the distance between the fins is only a few millimeters. This results in a very large number of points to be welded in the entire heat exchanger, since the welding is performed by a brazing process. And the welding seam clearance is kept between 0.05 and 0.1mm because of the requirement of the brazing process. Therefore, the traditional integral compression mode is not advisable during brazing, and the quality of products cannot be ensured.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a tool for brazing a water-air thin-wall heat exchanger. The tool can adjust pressing force of all welding points of the fin, and welding quality is improved.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a tool for brazing a water-air thin-wall heat exchanger comprises four pressure rod structures, wherein each pressure rod structure comprises a cross rod and a vertical rod; the vertical rods and the sliding rods parallel to the vertical rods are arranged on the cross rods at intervals, and the sliding rods and the vertical rods are perpendicular to the cross rods; the vertical rod is provided with a through hole along the central axis thereof; any two pressure bar structures are combined to form a group of pressure bar walls, wherein the slide bar of one pressure bar structure is positioned in the through hole of the corresponding pressure bar structure;
the two groups of pressure lever walls are connected through a middle pressure lever; the vertical rods are also provided with a plurality of connecting columns perpendicular to the vertical rods, and the connecting columns are perpendicular to the cross rods; counter bores for matching the connecting columns are formed in the two ends of the middle pressure lever;
the cross rod is also provided with a stud, and the stud and the vertical rod are respectively positioned at two opposite sides of the cross rod; a pressing plate is erected between the two groups of pressure lever walls, open slots corresponding to the studs are arranged at two ends of the pressing plate, and the pressing plate is arranged on the two corresponding studs belonging to the two groups of pressure lever walls through the open slots; the pressing plate is fixed through a nut arranged on the stud.
Furthermore, the vertical rod and the sliding rod are positioned on the same side of the cross rod.
Furthermore, a compression spring is further arranged on the stud and is positioned between the pressing plate and the nut.
Furthermore, a positioning sleeve is sleeved outside the compression spring, and the inner diameter of the positioning sleeve is smaller than the outer diameter of the nut.
The use method of the tool for brazing the water-air thin-wall heat exchanger comprises the following steps,
and 4, taking out the brazed workpiece, and disassembling the tool to obtain the thin-wall heat exchanger.
Further, the step 2 specifically includes: firstly, positioning a slide rod of one of the pressure rod structures in a through hole of the corresponding pressure rod structure to complete the assembly of the pressure rod wall; secondly, mounting a pressure rod wall on the middle pressure rod in the step 1; and thirdly, installing a pressure plate and screwing the nut.
The utility model adopts the technical scheme to produce the beneficial effects that:
1. the utility model can adjust the pressing force of all welding points of the fin and ensure the welding quality of products.
2. The positioning sleeve is arranged, so that the workpiece can be prevented from being damaged and deformed due to the fact that excessive force is applied to the workpiece in the welding process. In addition, along with the melting of brazing filler metal in the welding process, the compression spring begins to extend to provide continuous compression force compensation for the middle compression rod, and the situation that the compression force is insufficient due to the contraction of a workpiece is avoided, so that the middle compression rod continues to compress the fins within a reliable range. The design can deal with unbalanced deformation or local slight deformation in workpiece brazing, so that brazing can be smoothly and normally carried out, and the damage of the workpiece caused by deformation is effectively prevented while the brazing effect is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a compression bar according to an embodiment of the present invention.
FIG. 3 is a schematic view of the structure of the wall of the strut in an embodiment of the utility model.
Fig. 4 is a schematic diagram of the structure of a water-air thin wall heat exchanger.
Fig. 5 is a schematic view of the internal structure of fig. 4.
In the figure: 1. go up depression bar structure, 2, lower depression bar structure, 3, clamp plate, 4, position sleeve, 5, pressure spring, 6, gasket, 7, gland nut, 8, middle depression bar, 9, fin, 10, little thin wall red copper tube, 121, straining beam, 122, slide rail, 123, pull rod, 124, spliced pole, 125, screw rod.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Aiming at the problems that the fin of the water-air thin-wall heat exchanger is thin, the fin is easy to deform in the welding process, the welding points are very many, the effective connection of each welding point cannot be ensured by adopting the traditional integral compression mode during brazing, the quality of a product cannot be ensured, and the like, the structure is creatively provided by the embodiment and comprises an upper pressure rod structure 1, a lower pressure rod structure 2, a pressure plate 3, a positioning sleeve 4, a compression spring 5, a gasket 6, a compression nut 7 and a middle pressure rod 8.
Referring to fig. 1 to 3, the upper pressing rod structure 1 is composed of an upper pressing rod structure left branch and an upper pressing rod structure right branch. The left branch of the upper pressure rod structure and the right branch of the upper pressure rod structure are the same in structure.
The right support of the upper pressure lever structure consists of a tension beam 121, a slide rail 122, a pull rod 123, a connecting column 124 and a screw 125. The connecting columns 124 in the left branch and the right branch of the upper pressure lever structure are symmetrically distributed and are respectively sleeved at two ends of the middle pressure lever 8, so that the middle pressure lever 8 can be driven to move up and down along with the upper pressure lever structure or the lower pressure lever structure.
The screw 125 in the upper pressure bar structure passes through the pressure plate 3 and is connected with the compression nut 7. And a positioning sleeve 4 and a compression spring 5 which are arranged on the screw rod 125 in a penetrating manner are arranged between the pressing plate 3 and the compression nut 7, the compression spring adopts a high-temperature spring, and the positioning sleeve can deform in the up-down direction to a certain extent. Wherein, the positioning sleeve 4 can be used for protecting the pressing spring 5. The compression spring 5 is positioned in the positioning sleeve 4. The upper end of the positioning sleeve 4 is provided with a gasket 6, and the gasket 6 is used for uniformly compressing the pressure transmitted by the nut 7 to the positioning sleeve 4 and the nut 7.
The slide rail 122 in the upper pressing rod structure 1 is matched with the pull rod 123 in the lower pressing rod structure 2 at the same side, and the slide rail 122 is embedded in the pull rod 123 and can guide the slide rail 122 to move up and down. The distance of the pull rod 123 driving the middle press rod 8 to move up and down can be adjusted according to actual needs.
The connection between the various pieces is achieved using a precision cold welding process.
Fig. 4 is a water-air thin wall heat exchanger. The heat exchanger replaces the traditional water cooling plate with the water channel thin-wall copper tube, so that the use requirement can be met, and the cost can be greatly saved. Fig. 5 is a structural layout diagram of the water channel side and air side water channel thin-wall copper tubes 10 and the fins 9. The brazing process is adopted, and the process requires that the gap of a welding seam is kept between 0.05 and 0.1 mm. In addition, the wall thickness of the thin-wall water channel pipe is 0.6mm, and the thickness of the wind-side fin is only 0.2mm, belonging to the category of micro-channels. This will therefore result in a very large number of points where the entire heat exchanger needs to be welded. Therefore, the traditional integral compression mode is not advisable during brazing, and the quality of products cannot be ensured. Therefore, a separate design of the tooling for vacuum brazing of water-air thin wall heat exchangers is required.
Fig. 1 is a design diagram of a tool for brazing a water-air thin-wall heat exchanger, and the tool is structurally composed of an upper pressure rod structure 1, a lower pressure rod structure 2, a pressure plate 3, a positioning sleeve 4, a compression spring 5, a gasket 6, a compression nut 7 and a middle pressure rod 8. The design of the tool for brazing the water-air thin-wall heat exchanger has the core problem that how to ensure that the directions of the welding points where a plurality of air duct thin-wall fins are contacted with the water channel thin-wall red copper tube are opposite to the directions of the welding points where the air duct thin-wall fins are contacted with the adjacent welding points on the air duct thin-wall fins. Therefore, we first think of applying a pressure rod between each air duct thin-wall fin, so that it can apply the expected pressure to the air duct thin-wall fin according to the design requirement. There are two kinds of pressure levers, namely an upper pressure lever and a lower pressure lever. The upper pressure rod is used for providing an upward pressure to the thin-wall fin of the air duct, and the explanation of the lower pressure rod refers to the upper pressure rod. Therefore, we propose a concept that the upper press rod structure 1 and the lower press rod structure 2 are designed separately.
The upper pressure lever structure 1 is composed of an upper pressure lever structure left branch and an upper pressure lever structure right branch, as shown in fig. 2. The left branch of the upper pressure lever structure and the right branch of the upper pressure lever structure are the same in structure, and the middle pressure lever 8 is a stainless steel square tube with the diameter of 4 multiplied by 1 mm.
The right support of the upper pressure bar structure is composed of a tension beam 121, a slide rail 122, a tension rod 123, a connecting column 124 and a screw 125, as shown in fig. 2. The connecting columns 124 in the left branch and the right branch of the upper pressure lever structure are symmetrically distributed and are respectively sleeved at two ends of the middle pressure lever 8, so that the middle pressure lever 8 can be driven to move up and down along with the structure.
The screw 125 of the upper press rod structure passes through the press plate 3 and is connected with the compression nut 7, as shown in fig. 1. And a positioning sleeve 4 and a compression spring 5 which are arranged on the screw rod 125 in a penetrating manner are arranged between the pressing plate 3 and the compression nut 7, the compression spring adopts a high-temperature spring, and the positioning sleeve can deform in the up-down direction to a certain extent. Wherein, the positioning sleeve 4 can be used for protecting the pressing spring 5. The compression spring 5 is positioned in the positioning sleeve 4. The upper end of the positioning sleeve 4 is provided with a gasket 6, and the gasket 6 is used for uniformly compressing the pressure transmitted by the nut 7 to the positioning sleeve 4 and the nut 7.
The positioning sleeve 4 is arranged to prevent the workpiece from being damaged and deformed due to excessive force applied to the workpiece in the welding process. In addition, along with the melting of brazing filler metal in the welding process, the compression spring begins to extend to provide continuous compression force compensation for the middle compression rod, and the situation that the compression force is insufficient due to the contraction of a workpiece is avoided, so that the middle compression rod continues to compress the fins within a reliable range. The design can deal with unbalanced deformation or local slight deformation in workpiece brazing, so that brazing can be smoothly and normally carried out, and the damage of the workpiece caused by deformation is effectively prevented while the brazing effect is ensured.
The slide rail 122 in the upper pressing rod structure 1 is matched with the pull rod 123 in the lower pressing rod structure 2 on the same side, and the slide rail 122 is embedded in the pull rod 123 and can guide the slide rail 122 to move up and down. The distance of the pull rod 123 driving the middle press rod 8 to move up and down can be adjusted according to actual needs. In the embodiment, the screw is an M6 screw, the pull beam is a stainless steel square tube with the diameter of 6 multiplied by 1mm, the pull rod is a stainless steel square tube with the diameter of 4 multiplied by 1mm, and the slide rail and the connecting column can be realized by a stainless steel cylindrical pin with the diameter of M2. The connection between the various pieces is achieved using a precision cold welding process.
The use mode of the embodiment specifically comprises the following brazing steps:
1. assembling a tool:
firstly, positioning a slide rod of one of the pressure rod structures in a through hole of the corresponding pressure rod structure to complete the assembly of the pressure rod wall; secondly, mounting the wall of the pressure lever on the middle pressure lever; and thirdly, sleeving the positioning sleeve, the compression spring and the gasket into the screw rod in sequence, and fastening by using a compression nut.
2. And (3) welding sequence:
firstly, if soldering paste is used for soldering, the following steps are adopted:
1) the middle compression bars 8 are sequentially inserted into the fins, and the assembly of the tool is carried out according to the assembly steps of the workpieces;
2) after the step 1) is finished, sequentially dotting soldering paste at the welding seams of the fins;
3) after the step 2) is finished, putting the obtained product into a brazing furnace for brazing;
4) and taking out after welding, and disassembling the tool to obtain the water-air thin-wall heat exchanger.
Secondly, if the soldering lug is adopted for welding, the following steps are adopted:
1) placing the soldering lug at the position to be welded of the fin, and then inserting the soldering lug and the fin into the heat exchanger;
2) then, the middle pressing rods 8 are sequentially inserted into the fins, and the assembly of the tool is carried out according to the assembly steps of the workpieces;
3) then the integral assembly is placed into a brazing furnace for brazing;
4) and taking out after welding, and disassembling the tool to obtain the water-air thin-wall heat exchanger.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the utility model, so that any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. The tool for brazing the water-air thin-wall heat exchanger is characterized by comprising four pressure rod structures, wherein each pressure rod structure comprises a cross rod and a vertical rod; the vertical rods and the sliding rods parallel to the vertical rods are arranged on the cross rods at intervals, and the sliding rods and the vertical rods are perpendicular to the cross rods; the vertical rod is provided with a through hole along the central axis thereof; any two pressure bar structures are combined to form a group of pressure bar walls, wherein the slide bar of one pressure bar structure is positioned in the through hole of the corresponding pressure bar structure;
the two groups of pressure lever walls are connected through a middle pressure lever; the vertical rods are also provided with a plurality of connecting columns perpendicular to the vertical rods, and the connecting columns are perpendicular to the cross rods; counter bores for matching the connecting columns are formed in the two ends of the middle pressure lever;
the cross rod is also provided with a stud, and the stud and the vertical rod are respectively positioned at two opposite sides of the cross rod; a pressing plate is erected between the two groups of pressure lever walls, open slots corresponding to the studs are arranged at two ends of the pressing plate, and the pressing plate is arranged on the two corresponding studs belonging to the two groups of pressure lever walls through the open slots; the pressing plate is fixed through a nut arranged on the stud.
2. The tool for brazing the water-air thin-wall heat exchanger according to claim 1, wherein the vertical rods and the sliding rods are located on the same side of the cross rod.
3. The tool for brazing the water-air thin-wall heat exchanger according to claim 1, wherein a compression spring is further arranged on the stud and located between the pressing plate and the nut.
4. The tool for brazing the water-air thin-wall heat exchanger according to claim 3, wherein a positioning sleeve is sleeved outside the compression spring, and the inner diameter of the positioning sleeve is smaller than the outer diameter of the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397265.8U CN215698691U (en) | 2021-09-30 | 2021-09-30 | Tool for brazing water-air thin-wall heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397265.8U CN215698691U (en) | 2021-09-30 | 2021-09-30 | Tool for brazing water-air thin-wall heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215698691U true CN215698691U (en) | 2022-02-01 |
Family
ID=80027387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122397265.8U Active CN215698691U (en) | 2021-09-30 | 2021-09-30 | Tool for brazing water-air thin-wall heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215698691U (en) |
-
2021
- 2021-09-30 CN CN202122397265.8U patent/CN215698691U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6819561B2 (en) | Finned-tube heat exchangers and cold plates, self-cooling electronic component systems using same, and methods for cooling electronic components using same | |
| CN103128519B (en) | Manufacture method of micro-channel heat exchanger and device | |
| CN106839831B (en) | A kind of compact efficient heat exchanger core body and its welding tooling | |
| NO154027B (en) | HEAT EXCHANGE PANEL AND PROCEDURE FOR PRODUCING THE SAME. | |
| CN215698691U (en) | Tool for brazing water-air thin-wall heat exchanger | |
| CN113714592A (en) | Tool for brazing water-air thin-wall heat exchanger and using method thereof | |
| CN215698690U (en) | Positioning tool for radiating fins | |
| CN206075226U (en) | A kind of bus type heat pipe type water-cooling heat radiating system | |
| CN111375920B (en) | Tooling method for welding capillary tube heat exchanger | |
| CN215864785U (en) | Clamping piece type heat exchanger | |
| CN111970891B (en) | Method for manufacturing water-cooling plate | |
| CN211192385U (en) | Welding tool for core body assembly of heat exchanger | |
| CN219531730U (en) | Assembled fin radiator | |
| CN215638938U (en) | Heat exchange device for sheet metal part machining production equipment | |
| CN2363358Y (en) | Forced oil circulation air-cooling device for transformer | |
| JP2002346742A (en) | Brazing method | |
| CN220259864U (en) | High-power radiator welding jig | |
| CN220625020U (en) | Brazing type aluminum radiator | |
| CN215890671U (en) | Oil groove cooling system for buffer cylinder | |
| CN216717117U (en) | Aluminum steel composite pipe with good heat dissipation performance | |
| CN220196716U (en) | Anti-deformation tooling for welding thick plates and thin plates | |
| CN216503197U (en) | Quick positioner of welding | |
| CN220679627U (en) | Plate-fin radiator core component brazing assembly and fixing clamp | |
| CN213334287U (en) | High-power UVLED heat abstractor | |
| CN219200137U (en) | Energy-storage type flat heat pipe device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |