SE527717C2 - Method for manufacturing a heat exchanger and a system for performing method endings - Google Patents

Abstract

A method for manufacturing a heat-exchanger and in particular a heat-exchanger suitable for energy transfer between a plate and a fluid circuit. A sheet metal plate and a predetermined length of continuous metal tubing are prepared. The length of metal tubing is successively applied to the sheet metal plate. The successive application includes bringing the metal tubing into close contact with the sheet metal plate and affixing the metal tubing to the sheet metal plate.

Description

The invention summarizes the invention

An object of the invention is to provide a method for manufacturing a heat exchanger, and in particular a heat exchanger suitable for energy dissipation between a plate and a water circuit, which method eliminates or reduces one or more of the problems described above.

This object is achieved in accordance with the characterizing part of claim 1.

Thanks to the provision: of a method comprising: completing a thin sheet of metal; completing a predetermined length of continuous metal pipe; successively applying said length of metal tube to said thin sheet metal, said silver application includes: bringing the metal tube into close contact with said thin sheet metal; and attaching said metal pipe to said thin sheet metal, provides a highly flexible and cost effective manufacturing method which allows the manufacture of heat exchangers having good dimensional tolerances and thus can provide good thermal contact between the pipe length and the thin metal sheet.

Preferred embodiments are set forth in the dependent claims.

Description of the drawings

In the following, the invention will be described in more detail with reference to the accompanying drawings, in which

FIG. 1 is a schematic illustration of a system for manufacturing a heat exchanger, in accordance with the method of the present invention,

FIG. 2 is a schematic illustration of the means for performing the step of applying the steps of plating, positioning and attaching the metal tube to the thin sheet metal, in accordance with the method of the present invention,

Fig. 3 schematically illustrates the means for performing the step of providing the metal tube with bends to form a window-bound circuit pattern during the oscillating application of the tube to said thin metal sheet, in accordance with the method of the present invention. Additional objects and features of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings. It is to be understood, however, that the claims are intended for illustrative purposes only and not as a definition of the boundaries of the invention, for which reference is made to the appended claims. It should further be understood that the lines are not necessarily to scale and that, unless otherwise indicated, they are merely intended to illustrate conceptually the structures and procedures required. A schematic illustration of a system for manufacturing a heat exchanger in accordance with the method of the present invention is shown in Figure 1. The system comprises a layer 1 of thin metal plates 2 of a predetermined shape. size. A handling system 3, such as a programmed robotic handling system, is provided for handling the thin metal plates 2. However, it is obvious that any suitable handling system could be used, including manual handling of the metal sheets 2.

The antenna system is arranged to take a thin metal sheet 2 from the bearing 1 and transfer it to a leaching unit 4, where the thin metal plate 2 will be released and postulated in a predetermined width-defined position. As soon as the thin metal plate 2 has assumed the predetermined well-defined position, the handling system 3 will again take the thin metal plate 2 or transfer it to a flat work table 5. Through the insertion step, precise positioning on the flat work table 5 is significantly simplified.

The thin metal plate 2 will then be fixed to a working post on the flat work table 5. The thin metal plate 2 is advantageously xered to the flat work table 5 using vacuum negative pressure, the thin metal plate 2 being brought into close contact with the flat work table 5, thus providing a substantially flat work surface on the thin metal plate 2.

A coil (not shown) with continuous metal tube 6, preferably copper tubes, is completed. In a preferred embodiment, a predetermined length of continuous metal tube 6 is completed in a sequence of steps which includes, straightening the metal tube 6, cutting the metal tube 6 to the predetermined length required for the final product, and winding the predetermined length of metal tube. coil 7.

The tube is provided: to provide a liquid medium for transferring the friend from the thin absorber plate 2 of metal to e.g. a heating system to house. The preferred liquid for these types of systems is ordinary water. To prevent damage to such solar collector systems, the water must be of a certain quality.

For systems located in areas where the temperature falls below 0 ° Celsius, an antifreeze fluid must be added to the water. The antifreeze can be glycol or glycol with rust inhibitors.

In the preferred embodiment, a pipe rappelling unit 8 is provided, such as e.g. carried by a second pre-programmed robot system 9, then with the coil 7, which contains the fixed length of continuous metal pipe 6. In an alternative embodiment, however, pipe 6 could be fed directly from the coil (Not shown) to the pipe filling unit 8, which could include means for performing the above steps of straightening the metal tube 6 prior to application and cutting the metal tube 6 to the predetermined length required for the final product. As illustrated in Figure 1, the work table 5, which carries the thin metal plate 2, will be moved in the direction indicated by the dashed plies 17 and into the operational range of the second pre-programmed robot system 9. which carried the pipe applicator 8.

As schematically illustrated in Figure 2, the pipe applicator unit 8 is arranged to successively apply the length of metal pipe 6 to the thin metal plate 2. In the preferred embodiment, where the predetermined length of metal pipe 6 is provided on a spool 7, the pipe 6 is fed in the direction the arrow 10 towards a predetermined position on the membrane metal plate 2 via a directional device, e.g. consisting of a number of rollers 11. Thereafter, the metal tube 6 is brought into close contact with the thin metal plate 2, e.g. by pressing the metal tube 6 against the thin metal plate 2 using at least one guide rail 12. The tube 6, which is brought into close contact with the thin metal plate 2, is then momentarily inflsis at the thin metal plate 2.

In the preferred embodiment, attachment is effected by welding the metal tube 6 to the thin metal plate 2. Laser welding is the preferred joining method. Laser welding is especially Iampat for production in large volumes of the full-plate absorber-heat exchanger. Since the tube 6 has been brought into close contact with the thin metal plate 2, it is possible, by means of lasers 14 which emit laser beams 18, to provide welds 13 which allow very efficient heat transfer. The welds 13 are preferably provided during the welding operation simultaneously on both sides of the tube 6.

Since the tube 6 only needs to be brought into close contact with the thin metal plate 2 at the actual welding point, the whole complex of touring problems is limited to one point.

In use, the sun irradiates the absorber plate 2, where the sun's thermal energy is absorbed and transported by the plate 2 towards a weld 13. The thermal energy is conducted through the weld 13 and into the tube 6, so the ability of the weld 13 to transfer thermal energy is critical. Thereafter, the thermal energy will be transferred to a surface medium, which circulates in the tube 6 and is used to transport the thermal energy to another location. It is obvious to the person skilled in the art that the same gallery reverses direction, ie. the terrestrial energy of a circulating liquid dies! the tube 6 is transferred to the tube 6 and via the welds 13 fl ii n plate 2, which is arranged to emit thermal energy to its surroundings. In the preferred embodiment, the full plate absorber warp is produced by laser welding copper tubes 6 to a homogeneous absorber plate 2, preferably a thin aluminum or copper plate 2. This effect gives a very good thermal contact between the pipe 6 in the plate and the plate 2. The present invention also allows a very high degree of flexibility when it comes to the design of the absorber. Copper weld: roreu-aaesvrs on the back of absorber barge 2, framing a smooth surface and a substantially uniform color on the visible side of the absorber.

Laser welding gives a substantially homogeneous hue and a flat absorbent surface, which meets the stringent aesthetic requirements and at the same time provides superior performance. 10 15 20 25 30 35 527 717

The visible side of the metal absorber plate 2 is inadvertently pre-coated with a selective surface. In the case of aluminum sheets 2, the selective multilayer surface is preferably deposited on an anodized aluminum substrate using physical vapor deposition (PVD). High degree of infrared (IR) reflection ensures a low thermal emission coefficient (s). Old stocks at the top of the year accounted for a very high soyabsorbent coefficient (a) and resistance to environmental influences. This surface often has a blue hue.

In the case of a copper plate 2, coat it by a magnetron filtration process. A reactive process is used to produce a CERMEI multi-shield coating with a graded refractive index, in which very small metal particles are dispersed in an amorphous dielectric matrix. The metal hole is decreasing to the upper layers. Absorption is achieved by scattering effects at the metallic particles and the surrounding dielectric matrix. In addition, such multilayer films use inference references between semi-transparent layers to capture energy. Therefore, an anti-reflective coating is applied to the surface of the layer stack, which also has the function of a protective film. A special metal coating is applied to the top of the substrate as a banner clamp to prevent the substrate from corroding and diffusing the substrate nail material into the upper layers, which drastically improves the life of the coating. At the same time, it increases the force increase in the subsequently deposited bearings.

It will be obvious to the father that the coating of the visible side of the absorber plate 2 of metal, as proposed above for aluminum plates, can also be used for copper plates 2 and that the coating proposed for copper plates 2 can also be used for aluminum plates 2. Furthermore, it will be apparent to those skilled in the art that the coating can be provided using any suitable method of surface treatment, such as painting.

As schematically illustrated in Figure 3, the metal roll 6 in accordance with the inventive method is arranged to be fed in the direction of the arrow 10 and successively applied and attached to the thin metal plate 2 and provided with bends, to form a preform. determined circuit pattern on the thin metal plate 2. The circuit pattern can be optimized, to provide maximum efficiency ßr floor overflow.

In a preferred embodiment, the tube exploration housing B includes means for feeding the tube 6, the alignment device (e.g. the rollers 11), the means (e.g. the guide roller 12) for bringing the tube 6 into close contact with the thin metal plate 2, the means ( for example the lasers 14) for adjusting the tube 6 at the thin retail plate 2, as well as the means 15 for providing tube bends, all of which are arranged on one and the same tool, which is supported by a pre-programmed robot system 9, so no tool change is necessary during applloerlngsprooessen. The robotsysilem 9 provides positioning with great accuracy when applying and attaching the tube cross 6 to the thin absorber plate 2 or metal. The tubular system 9 also provides the means for precisely controlling the formation of the tube bends and the formation of the predetermined circuit pattern on the thin metal plate 2. In the case of welding welding used for fixing the tube 6 at the thin metal plate 2, positioning of the points of action of the lower beams 18 is conveniently accomplished by the applicator 8 'floating on the surface of the work table 5, independent of the vertical positioning of the robois system 9, which has the applicator tool.

As a result, the alignment is independent of the positioning accuracy of the robot system 9 or how flat the underlying work surface is. It will be apparent to those skilled in the art that other altitude sensing methods may be used to position the points of action of the laser beams 18 emitted by the lasers 14.

During the successive application at the thin metal plate 2, the metal tube 6 is provided with bends, to form the predetermined circuit pattern. In the preferred embodiment, these tube bends are formed using bending rollers 15. The bending rollers 15, for forming the tube bends, are preferably comprised of a pair of bending rollers 15, which are arranged to position a bending roller 15 on each side of the metal tube 6 to force the metal tube 6. tube 6 to form the bends by the pair of bending rollers 15 being continuously repositioned relative to the thin metal plate 2 during the suerassive fitting of frame s. In order to provide the hook, the pipe section preceding the hook must first have been attached to the plate 2, e.g. by welding. During the oscillation operatlon, e.g. In the direction of arrow 16, the attachment is paused, e.g. welding, and the pair of bending mills 15 are positioned one on each side of the tube 6. During continued successive application of the tube 6, the pair of bending rollers 15 are repositioned continuously, when the tube punching unit 8 is repositioned by the pre-programmed robot system 9, thus creating the bend. It will be obvious to the person skilled in the art that using the above support, it is a prerequisite for forming a bend that the pipe section that precedes the bend must first have been attached to the plate 2, e.g. by welding. As soon as the bend is extended, lnstlng operations are resumed, e.g. welding operations. Once the predetermined circuit pattern has been established, the thin metal plate 2 is removed from the work table 5 by simultaneously releasing the handling system 3 and the vacuum negative pressure. The finished heat exchanger is then transferred to a storage area (not shown) for finished products waiting to be transferred to another location, before being integrated into a complete recovery system. In accordance with the present invention, there is also provided a system for manufacturing a water veneer, arranged to perform the above method. This enables cost-effective production of high-performance heat exchanger.

The invention is not limited to the teachings described above, but may be varied within the scope of the appended claims.

It will be apparent to those skilled in the art that the method of making a varnenevaxier, in accordance with the present invention, is not only suitable for the manufacture of the above-exiled products but can also be used to make other types of water exchanger products. , such as heating panels, cooling panels and panels for so-called cooling roof systems. Thus, while it has been shown and pointed out and pointed out: fundamental new features of the invention as applied to a preferred embodiment thereof, it is to be understood that various deletions and substitutions and changes in the introduction and details of the illustrated devices, and their application, can be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of the elements cdi / or meinode steps which perform substantially the same function in substantially the same manner in order to achieve the same result fall within the scope of the invention. Furthermore, it should be understood that structures and / or elements and / or methods shown and / or described in connection with any particular embodiment or embodiment of the invention may be incorporated into any other shown or described or indicated embodiment or embodiment as a general matter of choice. of execution. It is therefore intended to be limited only as indicated by the scope of the appended claims.

Claims (12)

10 15 20 25 30 35 527 717 Patent claim A method of manufacturing a heat exchanger and in particular a heat exchanger suitable for energy transfer between a plate and a liquid circuit, the method comprising: completing a mm mrall plate (2); completing a predetermined length of continuous metal pipe (6); successively applying said length of metal tube (6) to said thin metal plate (2), said successful application including: bringing the metal tube (6) into close contact with said thin metal plate (2); and attaching said metal tube (6) to said thin metal plate (2). Method according to claim 1, characterized in that said attachment is effected by welding said metal pipe (6) to said thin metal sheet (2). Method according to claim 2, characterized in that said attachment is effected by welding by laser swelling. Method according to any one of claims 1 to 3, characterized in that said close contact between said metal pipe (6) and said thin metal plate (2) is effected by pressing said metal pipe (6) against said thin metal plate (2) using at least one lead roller (12). Method according to any one of claims 1 to 4, characterized in that the learning of said thin metal plate (2) includes placing said thin metal plate (2) on a flat surface (5) and attaching it thereto. Method according to any one of claims 1 to 5, characterized in that the completion of said predetermined length of continuous metal mortar (6) includes cutting said mortar (6) to said predetermined length and winding said predetermined length of metal pipe (6) on a spool (7). Method according to any one of claims 1 to 6, characterized in that metal pipes (6) are successfully applied and attached to said thin meran plate: (2) to: form a forutoestamr kreumansrer on said mnna mecall plate: (2). Method according to claim 7, characterized in that said metal tube (6) is provided with said thin metal plate (2) during said suival application for said thin application to form said predetermined circuit pattern. 10 15 'so 527 717 Method according to claim 8, characterized in that said tube bends are formed using crimping tubes (15). A method according to claim 9, characterized by said corrugation rollers (15) for forming said rudder bends consisting of a pair of crank rollers (15) arranged to be positioned with a crank roller (15) on each side of said metal tubes (6) and arranged to forcing said tube (6) to form said hooks by continuously repositioning said pair of curves (15) relative to said thin sheet metal (2) during said suessive application of said s (s). Method according to claim 10, characterized in that a pipe section preceding a intended hook is attached to said thin metal plate (2), and that said curling rollers (15) are part of a pipe application unit (8), which is arranged to be supported by a robot system (9), so that said intended bend is provided when the robot system (9) pivots the pipe exploration unit (8) to apply pipes (6) in a new direction. System for the manufacture of a heat exchanger, characterized in that it is arranged to carry out the method according to any one of the preceding claims.