An integrated wave-wing type radiator and a processing method thereof

Abstract

The application discloses an integrated wave airfoil heating radiator and a processing method thereof, and belongs to the technical field of heating equipment. The integrated wave airfoil heating radiator comprises a plurality of heating radiators arranged side by side, each of which is formed by buckling and welding of a heating radiator A plate and a heating radiator B plate. The heating radiator A plate is provided with circulating liquid delivery A and B ports, and the heating radiator B plate is provided with circulating liquid delivery C and D ports, which are connected correspondingly after buckling. The circulating liquid delivery B port is provided with an outward protruding connecting part, and the circulating liquid delivery D port is provided with an outward protruding matching part and a matching protruding ring, so that positioning and sealing are realized. The heating radiator A plate and / or the heating radiator B plate are provided with stress grooves for multi-point electric welding. The processing method comprises plate stamping, blanking forming, buckling, multi-point electric welding, laser welding, pressure measurement, piece stringing, pressure measurement, shot blasting, pressure measurement, cleaning, drying, plastic spraying and baking. The application has high structural strength, good sealing performance and high processing efficiency, and is suitable for batch production.

Description

Technical Field

[0001] This invention belongs to the field of heating equipment technology, specifically relating to an integrated wave-shaped radiator and its processing method. Background Technology

[0002] Radiators are common heating terminal devices, widely used in residences, offices, and industrial plants. Most existing radiators are made by welding together multiple plates, which is not only cumbersome to manufacture but also results in poor heating efficiency and insufficient temporary storage of the heating circulating fluid. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an integrated wave-shaped radiator and its processing method.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated wave-shaped radiator, comprising multiple radiator sections arranged side by side. Each radiator section is formed by fastening and welding a radiator A plate and a radiator B plate together. The radiator A plate includes a radiator section and a welded section located at the edge of the radiator A plate; the radiator B plate includes a radiator section and a welded section located at the edge of the radiator B plate. The radiator sections of the A plate and the radiator sections of the B plate are fastened together to form a circulating fluid receiving cavity.

[0005] Preferably, radiator A is provided with circulating fluid inlet A and circulating fluid inlet B, and radiator B is provided with circulating fluid inlet C and circulating fluid inlet D. When radiator A and radiator B are fastened together, circulating fluid inlet A and circulating fluid inlet C are connected, and circulating fluid inlet B and circulating fluid inlet D are connected, forming circulating fluid inlet and outlet.

[0006] Preferably, the circulating fluid delivery port B is provided with a protruding connecting part, and the circulating fluid delivery port D is provided with a protruding mating part, with a mating protruding ring on the protruding mating part. The protruding connecting part and the protruding mating part mate to achieve positioning and sealing.

[0007] Preferably, stress grooves are provided on the heating section of plate A and / or the heating section of plate B for multi-point welding.

[0008] Preferably, multiple heating radiators are connected side by side, with the circulating fluid inlets of adjacent heating radiators connected accordingly, forming an integrated wave-shaped heating radiator.

[0009] The present invention also provides a method for processing the above-mentioned integrated wave-shaped radiator, comprising the following steps:

[0010] (1) Sheet metal stamping: stamping metal sheets to form the preliminary shapes of radiator A and radiator B;

[0011] (2) Blanking and forming: Blanking the stamped sheet to form heating A plate and heating B plate with circulating fluid conveying port, stress groove and welding part structure;

[0012] (3) Fastening: Fasten the heating board A and heating board B back to back, so that the heating parts of board A and board B correspond to each other, and the outward connecting part cooperates with the outward mating part.

[0013] (4) Multi-point welding: Perform multi-point welding in the stress groove to initially fix the heating A plate and heating B plate;

[0014] (5) Laser welding: Laser welding is used to seamlessly weld the sides of the welding parts of plate A and plate B to form a sealed heating radiator.

[0015] (6) Pressure test: Inflate the heating element with air and put it in water to test its air tightness. If there is a leak, repair it by welding.

[0016] (7) Connecting multiple heating radiators together so that adjacent circulating fluid delivery ports are connected accordingly;

[0017] (8) Pressure testing: Perform airtightness testing on the assembled unit;

[0018] (9) Shot blasting: The entire surface is shot blasted to clean it;

[0019] (10) Pressure measurement: Measure the pressure again;

[0020] (11) Cleaning: Cleaning the surface;

[0021] (12) Drying, powder coating and baking: Drying, powder coating and baking are carried out by using a hanging conveyor chain.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. High structural strength: Through the cooperation of the protruding connecting part and the protruding mating part, as well as the multi-point electric welding and laser seamless welding in the stress groove, the single radiator is firmly connected and has good overall rigidity;

[0024] 2. Good sealing performance: The mating rings on the outwardly convex mating parts form multiple seals, and laser welding achieves a seamless seal, effectively preventing leakage;

[0025] 3. High processing efficiency: It adopts stamping, blanking, automatic welding and assembly line operation, which is suitable for mass production and has stable quality;

[0026] 4. Long service life: The overall structure is pressure-resistant and corrosion-resistant, and can adapt to long-term thermal cycling conditions. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the integrated wave-shaped radiator of the present invention;

[0028] Figure 2This is a three-dimensional structural diagram of a single heating element of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a single heating element (from another direction) of the present invention;

[0030] Figure 4 for Figure 2 A magnified view of part A in the image;

[0031] Figure 5 for Figure 3 A magnified view of part B in the image;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of the heating element of the present invention, which consists of a single or two separate sections.

[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the heating element of the present invention, which consists of a single piece and two pieces separated (in another direction).

[0034] In the diagram: 1. Heating radiator slab; 11. Circulating fluid supply port A; 12. Circulating fluid supply port B; 121. Outwardly protruding connecting part; 13. Circulating fluid supply port C; 14. Circulating fluid supply port D; 141. Outwardly protruding mating part; 142. Mating protruding ring; 15. Heating radiator A plate; 151. Heating part of A plate; 152. Welding part of A plate; 16. Heating radiator B plate; 161. Heating part of B plate; 162. Welding part of B plate; 17. Stress groove. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1: Structure of a single heating radiator

[0037] like Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, this embodiment provides a single heating element 1, which is formed by fastening and welding together a heating element A plate 15 and a heating element B plate 16.

[0038] The heating panel A 15 is made of cold-rolled steel sheet, stamped and formed, with a thickness of 1.5-2.0mm. The heating panel A 15 includes a heating section 151 and a welding section 152 located at the edge. The heating section 151 is an outwardly protruding cavity structure, forming half of a circulating fluid receiving cavity inside. The welding section 152 is a flat plate structure extending outward along the edge of the heating section 151, used for welding to the heating panel B 16.

[0039] The B-panel 16 of the radiator is made of the same cold-rolled steel sheet as the A-panel 15, with a thickness of 1.5-2.0 mm. The B-panel 16 includes a B-panel heating section 161 and a B-panel welding section 162 located at the edge. The B-panel heating section 161 is an outwardly protruding cavity structure, the other half of which forms a circulating fluid receiving cavity. The B-panel welding section 162 is a flat plate structure extending outward along the edge of the B-panel heating section 161.

[0040] like Figure 2 , Figure 4 As shown, the upper corner of the heating radiator A panel 15 is provided with a circulating fluid supply port A 11, and the lower corner is provided with a circulating fluid supply port B 12. The circulating fluid supply port A 11 is a circular through hole with an annular boss around it. The circulating fluid supply port B 12 is provided with an outwardly protruding connecting part 121, which is an annular boss structure that protrudes outward from the surface of the heating radiator A panel 15, and its center is a through hole.

[0041] like Figure 3 , Figure 5 As shown, the upper corner of the heating radiator B panel 16 is provided with a circulating fluid delivery port C 13, and the lower corner is provided with a circulating fluid delivery port D 14. The circulating fluid delivery port C 13 is a circular through hole with an annular boss around it. The circulating fluid delivery port D 14 is provided with an outwardly protruding mating part 141, which is an annular boss structure that protrudes outward from the surface of the heating radiator B panel 16. The outwardly protruding mating part 141 is provided with a mating protruding ring 142, which is an annular flange that further protrudes from the end face of the outwardly protruding mating part 141.

[0042] When heating panel A 15 and heating panel B 16 are engaged back-to-back, the circulating fluid supply port A 11 and circulating fluid supply port C 13 are coaxially aligned, and the circulating fluid supply port B 12 and circulating fluid supply port D 14 are coaxially aligned. The protruding connecting part 121 is inserted into the protruding mating part 141, and the mating ring 142 is press-fitted with the inner wall of the protruding connecting part 121 to form positioning and preliminary sealing.

[0043] Stress grooves 17 are provided on the mating surfaces of heating panels A (151) and B (161). The stress grooves 17 are groove structures extending along the edges of the heating panels, with a V-shaped or U-shaped cross-section and a depth of 0.3-0.8 mm. The function of the stress grooves 17 is to accommodate the weld points during multi-point welding, while simultaneously dispersing welding stress to prevent deformation of heating panels A (15) and B (16) during the welding process.

[0044] Example 2: Assembly structure of integrated wave-shaped radiator

[0045] like Figure 1As shown, this embodiment provides an integrated wave-shaped radiator composed of multiple radiator sections 1 connected side by side. The multiple radiator sections 1 are arranged side by side along their width direction, and adjacent radiator sections 1 are connected and connected through circulating fluid inlets.

[0046] Specifically, the circulating fluid supply port A 11 of adjacent heating radiator 1 is connected to the circulating fluid supply port C 13, and the circulating fluid supply port B 12 is connected to the circulating fluid supply port D 14. The connection points are sealed by welding to form a continuous circulating fluid inlet and outlet channel. The circulating fluid receiving cavities of multiple heating radiators 1 are interconnected through the circulating fluid supply ports to form a complete circulating fluid path.

[0047] Adjacent radiator sections are secured to each other using connectors or welding to ensure overall structural strength. The integrated wave-shaped radiator has an inlet and an outlet at each end for connection to external heating pipes.

[0048] Example 3: Processing method of integrated wave-shaped radiator

[0049] This embodiment provides a processing method for the above-mentioned integrated wave-shaped radiator, which includes the following steps in sequence:

[0050] (1) Sheet metal stamping

[0051] Cold-rolled steel sheets with a thickness of 1.5-2.0 mm are selected as raw materials. The steel sheets are fed into a stamping machine and stamped by a stamping die to form the preliminary shapes of radiator A panel 15 and radiator B panel 16. During the stamping process, the protruding cavity structures of the radiator section 151 of panel A and the radiator section 161 of panel B are also stamped.

[0052] (2) Blanking and forming

[0053] The stamped sheet is fed into the blanking die for blanking and forming. After blanking, the heating radiator A plate 15 forms a circulating fluid conveying port A 11, a circulating fluid conveying port B 12, an outwardly protruding connecting part 121, an A plate welding part 152, and a stress groove 17; the heating radiator B plate 16 forms a circulating fluid conveying port C 13, a circulating fluid conveying port D 14, an outwardly protruding mating part 141, a mating protruding ring 142, a B plate welding part 162, and a stress groove 17.

[0054] (3) Fastening

[0055] The heating panels A (15) and B (16) are fastened together back-to-back, so that the protrusions of the heating parts 151 and 161 are in opposite directions, forming a circulating fluid receiving cavity. During fastening, the protruding connecting part 121 is aligned with the protruding mating part 141 and inserted. The mating ring 142 is press-fitted with the inner wall of the protruding connecting part 121 to achieve positioning. After fastening, the welding parts 152 of panel A and 162 of panel B are fitted together.

[0056] (4) Multi-point welding

[0057] Multi-point electric welding is performed within the stress groove 17. The weld points are spaced 20-40mm apart along the stress groove 17. The purpose of multi-point electric welding is to initially fix the heating radiator A plate 15 and heating radiator B plate 16, preventing misalignment of the two plates during subsequent laser welding. The welding current is 80-120A, and the welding time is 0.1-0.3 seconds per point.

[0058] (5) Laser welding

[0059] Seamless welding is performed on the sides of welded portion 152 of plate A and welded portion 162 of plate B using a laser welding machine. The laser welding power is 1.5-3.0 kW, and the welding speed is 1.5-3.0 m / min. The laser beam scans along the outer side of the mating surfaces of welded portion 152 of plate A and welded portion 162 of plate B, causing the edges of the two plates to melt and solidify to form a continuous, sealed weld. The weld width is 0.5-1.0 mm, and the weld depth is 80%-100% of the plate thickness.

[0060] Compared with traditional seam welding, laser welding has the following advantages: smaller heat-affected zone and less welding deformation; continuous and dense weld with good sealing performance; and faster welding speed, making it suitable for automated production.

[0061] (6) Pressure measurement

[0062] Compressed air is injected into the welded radiator 1 to a pressure of 1.0-1.6 MPa, and the pressure is maintained for 30-60 seconds. Radiator 1 is then placed in water to observe for air bubbles. If no air bubbles are generated, the airtightness is satisfactory; if air bubbles are present, the leak location is marked and repaired by welding. After repairing the weld, the pressure is measured again.

[0063] (7) Serial film

[0064] Multiple pressure-tested and qualified radiator sections 1 are combined together and arranged side by side along the width direction. The circulating fluid supply port A 11 of adjacent radiator sections 1 is connected to the circulating fluid supply port C 13, and the circulating fluid supply port B 12 is connected to the circulating fluid supply port D 14. The joints are welded and sealed to form an integrated wave-shaped radiator body.

[0065] (8) Pressure measurement

[0066] Perform an airtightness test on the assembled integrated wave-shaped radiator. Inflate the radiator with compressed air at a pressure of 1.0-1.6 MPa and hold for 60-120 seconds. Submerge the entire unit in water for testing; if leaks are found, repair them by welding, and then retest the pressure.

[0067] (9) Shot blasting

[0068] Shot blasting is performed on integrated corrugated radiators. The shot blasting medium is steel shot or steel grit with a particle size of 0.3-1.0 mm. The shot blasting time is 5-15 minutes. The purpose of shot blasting is to remove surface oxide scale, rust, and welding spatter, while creating a uniform surface roughness to improve the adhesion of subsequent paint spraying.

[0069] (10) Pressure measurement

[0070] After shot blasting, an airtightness test is performed again to ensure that the shot blasting process did not damage the radiator.

[0071] (11) Cleaning

[0072] Clean the integrated wave-shaped radiator to remove residual shot blasting dust and oil stains from the surface. Cleaning methods can include high-pressure water washing or ultrasonic cleaning.

[0073] (12) Drying, powder coating and baking

[0074] The integrated wave-shaped radiators are conveyed to a drying oven via a hanging conveyor chain, where they are dried at 80-120℃ for 10-20 minutes. They then enter a spray painting booth for painting, achieving a paint film thickness of 30-60μm. After painting, they enter a baking oven and are baked at 180-200℃ for 20-30 minutes to cure the paint film. The hanging conveyor chain enables continuous assembly line operation, resulting in high production efficiency.

[0075] Example 4: Performance Verification

[0076] Performance tests were conducted on the integrated wave-shaped radiator of this invention:

[0077] Test Project Test Results Air tightness (1.0MPa pressure holding for 60 seconds) No leakage weld tensile strength ≥350MPa Overall compressive strength ≥1.5MPa Thermal cycling test (1000 cycles, -20℃ to 120℃) No leakage, no deformation Surface paint film adhesion (cross-cut test) Level 1 Salt spray test (500 hours) No rust

[0078] The above test results show that the integrated wave-shaped radiator of the present invention has excellent airtightness, structural strength and corrosion resistance, and meets the requirements for long-term heating use.

[0079] Example 5: Another processing method

[0080] The difference between this embodiment and embodiment 3 is that in step (4), multi-point electric welding is replaced by ultrasonic welding or resistance welding. In step (5), laser welding is replaced by argon arc welding or plasma welding. The remaining steps are the same as in embodiment 3.

[0081] Explanation of Structural Parameter Selection Criteria

[0082] The selection of the above structural parameters has the following technical significance:

[0083] (1) Steel plate thickness 1.5-2.0mm: When the thickness is <1.5mm, the radiator has insufficient pressure bearing capacity and is easy to deform; when the thickness is >2.0mm, the weight increases, the cost increases, and the stamping and forming difficulty increases.

[0084] (2) Stress groove depth 0.3-0.8mm: When the depth is <0.3mm, the space for the weld joint is insufficient and the stress dispersion effect is poor; when the depth is >0.8mm, the structural strength of the heating part is weakened.

[0085] (3) Multi-point welding spacing 20-40mm: When the spacing is <20mm, the welding points are too dense, increasing the time and cost; when the spacing is >40mm, the two plates are not firmly fixed and are prone to misalignment during laser welding.

[0086] (4) Laser welding power 1.5-3.0kW: When the power is <1.5kW, the welding penetration is insufficient and the sealing is poor; when the power is >3.0kW, the heat input is too large and it is easy to burn through the thin plate.

[0087] (5) The interference fit between the convex ring and the external convex connection: If the interference fit is too small, the positioning and sealing effect will be poor; if the interference fit is too large, it will be difficult to fasten and may cause deformation of the plate.

[0088] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A one-piece wave-shaped radiator, characterized in that, It includes multiple heating panels (1) arranged side by side, each of which is formed by fastening and welding together a heating A plate (15) and a heating B plate (16); The heating plate A (15) includes a heating section (151) and a welding section (152) located at the edge of the plate. The heating plate B (16) includes a heating section (161) and a welding section (162) located at the edge of the plate. The heating section (151) of the plate A and the heating section (161) of the plate B are correspondingly engaged to form a circulating fluid receiving cavity. The heating plate A (15) is provided with a circulating fluid delivery port A (11) and a circulating fluid delivery port B (12), and the heating plate B (16) is provided with a circulating fluid delivery port C (13) and a circulating fluid delivery port D (14). When the heating plate A (15) and the heating plate B (16) are fastened together, the circulating fluid delivery port A (11) is connected to the circulating fluid delivery port C (13), and the circulating fluid delivery port B (12) is connected to the circulating fluid delivery port D (14). The circulating fluid delivery port B (12) is provided with an outwardly protruding connecting part (121), the circulating fluid delivery port D (14) is provided with an outwardly protruding mating part (141), the outwardly protruding mating part (141) is provided with a mating protruding ring (142), and the outwardly protruding connecting part (121) mates with the outwardly protruding mating part (141); Stress grooves (17) are provided on the heating section (151) of the A plate and / or the heating section (161) of the B plate.

2. The integrated wave-shaped radiator according to claim 1, characterized in that, The multiple heating elements (1) are connected side by side, and the circulating liquid delivery ports of adjacent heating elements (1) are connected accordingly.

3. The integrated wave-shaped radiator according to claim 1, characterized in that, The stress groove (17) is provided on the mating surface of the heating part (151) of the A plate and the heating part (161) of the B plate.

4. The integrated wave-shaped radiator according to claim 1, characterized in that, The protruding connecting part (121) is an annular protrusion, the protruding mating part (141) is an annular groove, and the mating protruding ring (142) is a protruding ring disposed in the annular groove.

5. A method for processing the integrated wave-shaped radiator according to any one of claims 1 to 4, characterized in that, Includes the following steps: (1) Sheet stamping: The metal sheet is stamped to form the preliminary shape of radiator A plate (15) and radiator B plate (16); (2) Blanking and forming: Blanking the stamped sheet to form a heating A plate (15) and a heating B plate (16) with the circulating fluid conveying port A (11), circulating fluid conveying port B (12), circulating fluid conveying port C (13), circulating fluid conveying port D (14), stress groove (17), A plate welding part (152) and B plate welding part (162); (3) Fastening: Fasten the heating A plate (15) and the heating B plate (16) back to back, so that the heating part (151) of the A plate and the heating part (161) of the B plate correspond to each other, and the protruding connecting part (121) cooperates with the protruding mating part (141). (4) Multi-point electric welding: Multi-point electric welding is performed in the stress groove (17) to initially fix the heating A plate (15) and the heating B plate (16). (5) Laser welding: Laser welding is used to seamlessly weld the sides of the welding part (152) of plate A and the welding part (162) of plate B to form a sealed heating radiator (1). (6) Pressure test: Inflate the heating element (1) with air and put it in water to test its air tightness. If there is a leak, repair it by welding. (7) Connecting the heating elements: Combining multiple heating elements (1) together so that adjacent circulating fluid delivery ports are connected accordingly; (8) Pressure testing: Perform airtightness testing on the assembled unit; (9) Shot blasting: The entire surface is shot blasted to clean it; (10) Pressure measurement: Measure the pressure again; (11) Cleaning: Cleaning the surface; (12) Drying, powder coating and baking: Drying, powder coating and baking are carried out by using a hanging conveyor chain.

6. The processing method of an integrated wave-shaped radiator according to claim 5, characterized in that, In step (5), the weld seam of laser welding is located on the side of the welding part (152) of plate A and the welding part (162) of plate B, forming a continuous sealed weld seam.

7. The processing method of an integrated wave-shaped radiator according to claim 5, characterized in that, In step (7), multiple heating element pieces (1) are arranged side by side during the stringing process, and the circulating fluid supply port A (11) of the adjacent heating element piece (1) is connected to the circulating fluid supply port C (13), and the circulating fluid supply port B (12) is connected to the circulating fluid supply port D (14).

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