• 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:

    公开号:SE0900316A1
    申请号:SE0900316
    申请日:2009-03-11
    公开日:2010-09-12
    发明作者:Anders Kristiansson；Lars-Aake Naeslund；Luca Poppi；Werner Haag；Kurt Holm；Toni Waber
    申请人:Tetra Laval Holdings & Finance；
    IPC主号:
    专利说明:

    15 20 25 30 35 _ 2 _ the outgoing electron beam, such as the window foil 106 and the foil support plate. 108 som. prevents window foil 106 from collapsing when vacuumed. is generated inside the device 100. During operation of the electron beam device, the foil is also exposed to strong heat. In this way, the foil support plate 108 also has the important purpose of dissipating the heat generated in the foil 106 from the foil of the device during operation. By keeping the foil temperature moderate, an increased life of the foil 106 can be achieved.
    In manufacture, the copper support plate 108 is connected to the flange 104, which at this stage is separate from the tubular body 102. The flange 104 is generally made of stainless steel. The window foil 106 is then connected to the foil support plate 108 along a line extending along the circumference. on the foil support plate. 108 (not shown, but the connection is made at a similar point as the connection line 210 in Fig. 3) and the excess window foil 106 is trimmed. The foil 106 can then be coated to improve its properties when applied to the flange 104 thereafter on the tubular body 102 to provide a sealed casing. example applies to heat transfer. Summary of the Invention The inventors of the present invention have discovered that this prior art solution is not optimal when the electron beam device is used, for example, in oxygen-containing environments. Under these conditions, the accelerated electrons will generate ozone, which is a highly corrosive substance. The ozone can corrode the copper support, which in turn can affect the tightness of the housing and the packaging function of the electron beam device. In addition, machines that produce food packaging often use hydrogen peroxide to sterilize machine parts before production of the packaging begins. Consequently, the copper support can also come into contact with hydrogen peroxide. Hydrogen peroxide is also very corrosive to copper support.
    The most sensitive place is the volume of copper at the joint line with foil 106. Here only the corrosion needs to work below the joint line, which is only a few tenths of a millimeter, to give rise to the unfortunate result described above.
    The present invention aims to solve this problem by providing a method of mounting a window for output electrons in an electron beam generating device, the method comprising the steps of: arranging a foil support plate on a housing of the electron beam generating device , connecting a window foil to the foil support plate along at least one continuous connecting line, attaching a skirt of the window foil extending radially beyond the at least one connecting line to the housing along at least one continuous fastening line.
    There are many advantages to the method according to the invention, one of which is that the attachment of the foil to the casing will provide a seal which protects the copper support plate from being exposed to corrosive substances which could cause corrosion and lack of sealing ability.
    Preferred embodiments are defined by the dependent claims.
    The invention also comprises a window unit for outgoing electrons to an electron beam generating device comprising a foil support plate and a window foil, wherein. foil support plate. is attached 'to. a casing of the electron beam generating device, the window foil being connected to the foil support plate along at least one continuous connecting line, and wherein a skirt of the window foil extending radially outside the at least one connecting line is attached to the casing along at least one continuous fastening line.
    Preferred embodiments are defined by the dependent claims.
    Brief description of the drawings Below. For example, presently preferred embodiments of the invention will be described in more detail with reference to the accompanying drawings, in which: Fig. 1 is a schematic, isometric cross-sectional view of an electron beam device according to the prior art.
    Fig. 2 is a schematic partial view in cross section of the device according to Fig. 1, shown as an exploded view.
    Fig. 3 is a schematic partial cross-sectional view of a device according to a first embodiment of the invention, for comparison with the cross-sectional view in Fig. 2.
    Fig. 4 is a schematic partial view in cross section of a device according to a first embodiment of the invention and Fig. 5 is a schematic front view of the window unit according to the second embodiment.
    Description of preferred embodiments 1 and 2 has already been described. Fig. 3 is a cross-sectional view similar to 5. Fig. 2, ring shape of the present invention as Fig. Sectional view, of a first. utfö- is not an exploded view. The similarity between Fig. 2 and Fig. 3 is intended to facilitate the understanding of the present invention. However, the similarity should not be construed as diminishing the inventive step of the present invention, as the invention encompasses more than is apparent to the naked eye. 10 15 20 25 30 35 _ 5 _ The copper support 208 is connected to the flange 204. A possible connection method is brazing. In a separate step, the titanium window film 206 is bonded to the copper support 208. Possible bonding methods may include laser welding, electron beam brazing, diffusion bonding, and bonding. The connection is made along a connection line 210 at the circumference of the copper support 208. In, for example, welding, ultrasonic welding, this exemplified embodiment is the connection technology 210 is continuous so that the vacuum inside the electron beam device can be maintained. The word is used to define that the line is endless or niken diffusion bonding. The "continuous" connection line is closed. In addition, it should be defined that the connecting line 210 extends along the perimeters of the support plate 208. Preferably, the connecting line 218 208 extends perimeter. 210. several connecting lines at a distance from the frame support plate In addition, at least one connecting line is provided. Consequently, two or. As an example, an inner and an outer connecting line can be made and the two lines can, for example, be concentric in relation to each other.
    Flange 204, window subunit. the copper support 208 and the foil 206 form a The foil 206 can then possibly be coated and in the coating process only the window subunit is needed. processes. After the coating process, the flange 204 is connected to the tubular body 202. One possible connection technique is, for example, plasma welding.
    Instead of trimming the excess foil radially outside the connecting line 210, a surrounding skirt 212 is left. The free end of the skirt 212 is then arranged in a groove 216 in the flange 204, where an adhesive 214 is applied. The adhesive will act as a gas and moisture seal and as such prevent harmful corrosion of the sensitive volume around the connecting line 210. The adhesive is suitably a high temperature resistant adhesive. The groove 216 is continuous and forms a continuous fastening line for the skirt. 212. In addition, the groove 216 is spaced from the perimeter of a hole configuration in the flange 204 over which the support plate 208 is attached and through which the electrons will pass.
    The support plate 308 is attached to the flange 304 and the foil 306 is connected to A second embodiment is shown in Fig. 4. the support plate 308 along a connecting line 310 in one way The difference is that the groove 316 may be sufficient similar to that of the first embodiment. large to receive a frame 318 on top of the foil skirt 312. The frame 318 will facilitate the skirt. 312 is held 'against the flange. 304. attach the frame 318 to the groove 316.
    Glue 314 is used because Frame 318 is preferably continuous.
    It can be seen from Figs. 3 and 4 that after mounting no part of the foil support plate 208, 308 is exposed to the surrounding atmosphere, so that the corrosion of the copper support plate 208, 308 for the foil is prevented. Although the present invention has been described on the basis of presently preferred embodiments, it should be noted that various modifications and changes may be made without departing from the scope and scope of the invention as defined by the appended claims.
    The. a skirt that extends radially outside the connecting line can be attached directly to the cover without any grooves. Similarly, the frame used to hold the skirt can be attached directly to the housing.
    权利要求:
    Claims (13)
    [1]
    A method of mounting a window for outgoing electrons of an electron beam generating device, comprising the steps of: arranging a foil support plate (208; 308) the electron beam generating device, (206; 306) along at least one continuous' connection 310), (212; 312) extends radially beyond the at least one connecting (2010; nuerlig fastening line. On a casing of connecting a window foil (208; 308) line (21; attaching a skirt with the foil support plate of said window foil as the connecting line 310) of the casing. along at least one conti-
    [2]
    The method of claim 1, comprising the step of providing the at least one attachment line in shape (216: 316) in the housing, therein. of a groove and arranging the skirt (2112; 312)
    [3]
    A method according to claim 2, comprising the step of gluing the skirt (212; 312) to the groove.
    [4]
    The method of claim 2, comprising the step of retaining the skirt (312) in the groove (316) of the frame (318). using a
    [5]
    The method of claim 4, comprising the step of gluing the frame (318) to the housing along the attachment line.
    [6]
    A method according to any one of the preceding claims, comprising the step of arranging the foil support plate (208; 308) on (204; 304) of the housing, (204; is separated from the rest of the housing at the mounting (208; 308) (206; a flange wherein the flange 304) of the foil support plate 306). and window film 10 15 20 25 30 35 _ 8 _
    [7]
    A method according to any one of the preceding claims, comprising the step of diffusionally connecting the window foil (206; 306) to the support plate (208; 308).
    [8]
    8. Window unit for 'outgoing electrons' of a. electron beam generating device, comprising a foil support plate (208; 308) and a window foil (206; 306), the foil support plate (208; 308) being attached to a housing of the electron beam generating device, the window foil (206; 306) is connected to the window support plate (208; 308) along at least one continuous connecting line (210; 310) and ~ en. skirt (212; 312) of the window foil (206; 306), which extends radially outside the at least one connecting line (210; 310), is attached to the housing along at least one continuous fastening line.
    [9]
    A window unit for outgoing electrons according to claim 8, wherein the at least one fastening line is formed as a groove (216; 316) in the housing, in which the skirt (212; 312) is arranged.
    [10]
    A windowing unit for outgoing electrons according to claim 9, wherein the skirt (212; 312) is glued to the groove (216; 316).
    [11]
    A window unit for outgoing electrons according to claim (312) is retained in the groove (316) by means of a frame (318). 9, with the dress with
    [12]
    A window unit for output electrons according to claim 11, wherein the frame (318) is glued to the housing along the attachment line.
    [13]
    A window unit for outgoing electrons according to any one of which the window foil (208; of the preceding claims 8-12, (206; 308). 306) is diffusion connected to the support plate
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    引用文献:
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    CN107068513B|2011-07-04|2019-03-08|利乐拉瓦尔集团及财务有限公司|A kind of method that electron beam device, aspirator piece and manufacture are equipped with the electron beam device of the aspirator piece|
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    RU2648241C2|2016-09-01|2018-03-23|Акционерное Общество "Нииэфа Им. Д.В. Ефремова"|Wide-aperture accelerator with planar electron-optical system|
    CN110402614A|2017-01-26|2019-11-01|加拿大光源公司|Electron exit window in Isotope production|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE0900316A|SE534156C2|2009-03-11|2009-03-11|Method for mounting a window for outgoing electrons and a window unit for outgoing electrons|SE0900316A| SE534156C2|2009-03-11|2009-03-11|Method for mounting a window for outgoing electrons and a window unit for outgoing electrons|
    CN201080010766.8A| CN102341885B|2009-03-11|2010-01-27|Assemble method and the electron exit window assembly of electron exit window|
    EP10751075.2A| EP2406808B1|2009-03-11|2010-01-27|Method for assembling an electron exit window and an electron exit window assembly|
    PCT/SE2010/000018| WO2010104439A1|2009-03-11|2010-01-27|Method for assembling an electron exit window and an electron exit window assembly|
    US13/255,297| US9183963B2|2009-03-11|2010-01-27|Method for assembling an electron exit window and an electron exit window assembly|
    JP2011553981A| JP2012520457A|2009-03-11|2010-01-27|Method for assembling electronic exit window and electronic exit window assembly|
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