• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method and apparatus for manufacturing a heat exchanger. A plurality of parallel pipes are advanced from a magazine to an axially slotted open ended shell blank which is radially compressed against the pipes. The contacting surfaces of the pipe openings are then welded together, after which the ends of the package of pipes are immersed in a casting mass, which, after solidifying, is severed along a line therethrough so as to open the pipes at both ends. A wall enclosing each open end is then connected to each end of the pipe package.
    公开号:SU799631A3
    申请号:SU782595749D
    申请日:1978-03-31
    公开日:1981-01-23
    发明作者:Зетраеус Клод
    申请人:Ага-Стс Вэрмевэксларе Аб (Фирма)；
    IPC主号:
    专利说明:

    (increased) and trimming of the ends of the specified shell (shown by dotted lines). A method of manufacturing a heat exchanger is as follows. The pipe sleeve 1 includes a drum on which a length of pipe 2 of any length is wound. The pipe 2 is fed to a shear device 3 intended to cut the pipe into sections of equal length and crimp their ends. Such pipe sections are assembled into the cylinder 4, which is open from the ends, and the latter is preferably vibrated. When the corresponding number of pipes is inserted into the cylinder 4, the latter moves from along the arrow 5 to the piston 6 which moves the pipes located in the cylinder 4 into the shell blank 7, which is fed from the sleeve 8. The shell blank 7 is open at both ends and has a cylindrical surface with the axially extending groove 9. The blank 7 with the pipes 10 located therein is transferred to the pressing and welding device 11, while on both sides it has means 12 and 13 of pressing, which, for example, using hydraulic pistons, can be pressed to its walls Kam, as shown by the arrows. In this case, squeezing forces are formed on the wall, whereby the axial groove 9 is closed. The sides of the groove 9 thus adjoined are then welded together with a welding device 14. The welded blanks form a casing accommodating a package of pipes 10. The casing with the pipes located therein is then transferred with the help of the grip 15 to the periodically rotating table 16 and rotated together with pipes to the vertical position. Table 16 has several cup-shaped recesses 17, which in one position 18 of table rotation are filled with soft plastic through metering device 19. Table 16 then rotates one step, after which one end of the casing with pipes is immersed in plastic and held in it using the gripping device 20 associated with the table. tol has as many grips as there are recesses. The plastic hardens during the subsequent stepped rotation of the table 16. If necessary, the hardening of the plastic can be accelerated by heating. When the cup-shaped grooves, with shells placed in them, reach position 21, the shell is gripped by a gripping lever 22 which rotates it 180, after which the other end of the shell is dipped into the next groove with molten plastic placed in the second periodically rotating table 23 The plastic is supplied to the booster 23 using the second metering device 24. As a result of the treatment to which the shells are subjected on two periodically rotating tables 16 and 23, the first of them together with the tubes placed in it They are filled with plastic from both ends (Fig. 3). The ends of the pipes are surrounded by plastic filler 25, but since these ends are closed, the plastic does not enter them. The sheath, together with the pipes located therein, is fed to the cutting device 26 (FIG. 3) using the gripping lever 27. The cutting device 26 includes two circular saws 28 and 29 designed to separate the corresponding ends of the shell and the pipes inside it. By cutting, the closed ends of the tubes open. However, not all of the plastic is removed, so the pipes are kept in a divided position with the help of the remaining plastic. If necessary, the tube package obtained in this way can be checked by pressure, after which each end of the shell 7 is inserted at position 30 into the cup-shaped elements 31 and 32, which are welded to the shell with the help of the welding device 33 and 34. Typically, such cup-shaped elements have connections 35 and 36 in order to pass the medium through the pipes. Another medium flows around the external surfaces of the pipes, entering the shell and leaving it through the joints 37 and 38 located in the shell 7 (Fig. 4). The ends of the pipes, together with the ends of the shell, are immersed in plastic, which then hardens. You can pour the ends of the pipes not only with plastic, but also with metal or. an alloy of metals, such as copper and lead antimony, as well as ceramic materials. If it is used to pour metal or metal alloy, the mass hardens more quickly than plastic, in which case turntables 16 and 23 may be unnecessary. Such tables can then be replaced with a simple device designed to immerse the pipe ends and the shell into the mass. Such a device includes gripping levers 15 and 22 and cup-shaped recesses associated with each gripping lever. At the same time, the castings in the grooves, for example, metal or metal alloy, are poured before the corresponding end of the bundle of pipes with sheath is dipped. In this case, the casting hardens so quickly that there is no need for turntables. With the appropriate selection of material, taking into account the material
    tubes 10 and a solidified mass 25 around the ends of the tubes, so that the coefficient of expansion of the mass exceeds the coefficient of the material for which the tubes are made, a seal can be obtained between the mass and the tubes, which will become more efficient if the heat exchanger heats up. In the same way, the seal between the mass and the inner, surface of the shell can be made more effective with increasing heating temperature of the heat exchanger.
    The device for implementing the proposed method works as follows.
    The pipe 2 is cut into straight lengths of equal length, but the formation of each pipe in the form of a spiral or double helix is allowed, due to which the heat exchanger can be adapted for different conditions where different heat transfer is necessary. One end of the tubes is closed with a mass to form one inner wall, the other end is closed with a mass, forming the other inner wall.
    It is also possible to make pipes with a groove at the same time as cutting pipe 2 of any length, which is necessary for heat exchangers having pipes. Each groove provides increased turbulence to the medium passing through the tubes, thereby increasing heat transfer, and the linear expansion of the tubes, resulting from an increase in the temperature of the heat exchanger, makes it possible to compensate for their corresponding axial compression. Without this possibility of compressing the pipe axially, very large mechanical stresses may occur on the inner walls adjacent to the pipe ends when the temperature of the heat exchanger rises.
    . Shell 7 may have a groove 39, into which penetrates the mass 25 (Fig. 3 and 4). Thus, the inner walls are held axially against movement. But in such conditions, only one inner wall can be kept from axial displacement, while the other has the ability to move axially to some extent without forming a groove in the shell. Despite this, good quality seals were obtained between the mass of 25 and the shell.
    When using the proposed Device, it is necessary to take into account that the cup-shaped elements 31 and 32 are welded to the casing using a welding device 33 and 34. However, if the material of the end walls covering the ends of the pipes is sensitive to heat, it is possible to provide a flange at each end of the casing The end wall can be screwed on. Such flanges can be welded to the sheath after the toggle hole 9 in the sheath .7 is welded using a welding device 14. In this case, welding operations are performed before immersing the ends of the sheath into the mass, due to which it is not exposed to excessively high temperatures.
    According to the proposed method, pipes are assembled in cylinder 4 before
    0 they pass into the casing blank, from which the casing 7 itself is later formed. It is also possible to lower the tubes into the casing blank through the axial hole 9, and shake the billet in order to orient the tubes inside it.
    The proposed method is characterized by considerable simplicity in comparison with the known, moreover, it
    0 takes into account the possibility of automating almost all stages of the process.
    权利要求:
    Claims (2)
    [1]
    1. A method of manufacturing heat exchangers, including cutting pipes into dimensional workpieces and feeding them to the assembly site, as well as placing them in a package parallel to one another, which is so that, in order to increase productivity, after cutting, the ends of pipes are muffled, predominantly crimped, pipes load
    open cylindrical at the ends
    5, a shell with a through groove along its entire length,. After which the shell with pipes is compressed in a radial direction until the walls of the groove are closed, the walls are welded, the ends of the shell and the ends of the pipes are immersed in a filler, and then the ends of the shell are cut off filler and plugged, the ends of the pipes, and then attached to the ends of the shell bowl-shaped elements, forming with
    5 shell closed heat exchanger space.
    [2]
    2. A device for carrying out the method according to claim 1, comprising a pipe cutting installation for measuring workpieces placed along the process, and a mechanism for supplying them to the assembly site, characterized in that it is equipped with a pipe end crimping mechanism,
    5 radial compression of the casing, head for welding the groove walls, installation for immersing the ends of the casing in the core and installation for trimming the ends of the casing with part of the core and pipe ends.
    0
    3i The device according to claim 2, wherein the installation for immersing the ends of the casing in the filler is made in the form of two periodically rotating tables with cup-shaped recesses for accommodating the filler, a mechanism for pouring the filler into the recesses of the tables, grips for immersing the casing in a filler, a turn-up device and a shell removal mechanism with pipes from the table
    Sources of information taken into account in the examination 1. USSR author's certificate 211506, cl. On 21 D 39/06, 1966.
    类似技术:
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    同族专利:
    公开号 | 公开日
    NO781145L|1978-10-03|
    FI780744A|1978-10-02|
    US4170055A|1979-10-09|
    SE7703800L|1978-10-02|
    ATA229678A|1979-10-15|
    PL205655A1|1978-12-18|
    DK145578A|1978-10-02|
    SE411714B|1980-02-04|
    GB1575592A|1980-09-24|
    AT357004B|1980-06-10|
    FR2385488A1|1978-10-27|
    DE2813767A1|1978-10-05|
    JPS53123364A|1978-10-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2389175A|1942-10-07|1945-11-20|Clifford Mfg Co|Method of making heat exchange apparatus|
    US2417662A|1945-01-01|1947-03-18|Garrett Corp|Method of brazing aluminum|
    BE561859A|1956-10-23|JPS6227354B2|1979-04-04|1987-06-13|Senko Med Instr Mfg|
    JPS5659197A|1979-10-19|1981-05-22|Terumo Corp|Multitubular type heat exchanger and its preparation|
    US4488342A|1980-01-28|1984-12-18|Rheem Manufacturing Company|Vessel construction employing multiple internal heat exchange tubes|
    CA1177214A|1982-03-31|1984-11-06|Jobst U. Gellert|Pressure casting process|
    US4607423A|1983-06-13|1986-08-26|Sleep Jr Robert E|Method for manufacturing a disassembleable core heat exchanger|
    US4595297A|1985-10-15|1986-06-17|Shell Oil Company|Method and apparatus for measure of heat flux through a heat exchange tube|
    US5246918A|1990-07-11|1993-09-21|Unilever Patent Holdings B.V.|Process for preparing perfumed personal products|
    DE102006040851A1|2006-08-31|2008-03-06|Mahle International Gmbh|Heat transfer unit|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7703800A|SE411714B|1977-04-01|1977-04-01|SET AND DEVICE FOR MANUFACTURING A HEAT EXCHANGER INCLUDING A MULTIPLE IN CONDUCT TO A FLOWING MEDIUM PARALLEL CONNECTED PIPE PIECE|
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