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    Radiation generator and radiation imaging system
    5.
    发明专利
    Radiation generator and radiation imaging system 有权
    辐射发生器和辐射成像系统

    公开(公告)号：JP2012138168A

    公开(公告)日：2012-07-19

    申请号：JP2010278363

    申请日：2010-12-14

    Applicant: Canon Inc ,  キヤノン株式会社

    Inventor： OGURA TAKAO ,  TAMURA MIKI ,  MIYAZAKI KAZUYA ,  UEDA KAZUYUKI ,  SATO YASUE ,  AOKI SHUJI ,  NOMURA ICHIRO

    IPC: H01J35/08 ,  G01N23/04

    CPC classification number: H01J35/08 ,  H01J35/16 ,  H01J35/18 ,  H01J2235/068 ,  H01J2235/087 ,  H01J2235/163 ,  H01J2235/166 ,  H01J2235/168 ,  H01J2235/186

    Abstract: PROBLEM TO BE SOLVED: To provide a radiation generator in which a target is not damaged and size and weight can be reduced.SOLUTION: In the radiation generator, a second shielding body 21, a target 16 and a first shielding body 20 are arranged in the order from an electron emission source 1 side. The shortest distance from a position where the target 16 has the highest radiation intensity to the first shielding body 20 is shorter than the shortest distance from the position where the target 16 has the highest radiation intensity to the second shielding body 21.

    Abstract translation: 要解决的问题：提供一种辐射发生器，其中靶材不被损坏，并且可以减小尺寸和重量。 解决方案：在辐射发生器中，从电子发射源1侧依次排列第二屏蔽体21，靶16和第一屏蔽体20。 从目标16具有最高辐射强度的位置到第一屏蔽体20的最短距离比从目标16具有最高辐射强度的位置到第二屏蔽体21的最短距离短。 （C）2012，JPO＆INPIT

    X-ray tube cooling system, and x-ray generator
    6.
    发明专利
    X-ray tube cooling system, and x-ray generator 有权
    X射线管冷却系统和X射线发生器

    公开(公告)号：JP2009009953A

    公开(公告)日：2009-01-15

    申请号：JP2008248952

    申请日：2008-09-26

    Applicant: Varian Medical Systems Technologies Inc ,  バリアン・メディカル・システムズ・テクノロジーズ・インコーポレイテッドVarian Medical Systems Technologies, Incorporated

    Inventor： ANDREWS GREGORY C

    IPC: H05G1/02 ,  H01J35/00 ,  H01J35/16 ,  H05G1/04

    CPC classification number: H01J35/16 ,  H01J2235/12 ,  H01J2235/1283 ,  H01J2235/168 ,  H05G1/025 ,  H05G1/04

    Abstract: PROBLEM TO BE SOLVED: To provide an X-ray tube cooling system capable of achieving further high cooling efficiency, and of preventing excessive thermal stress to a coolant.
    SOLUTION: This X-ray tube cooling system utilizes a shield structure that is connected between a cathode cylinder and an X-ray tube housing and is disposed between an electron source and a target anode. The shield has a plurality of cooling fins to improve overall cooling of the X-ray tube and the shield so as to extend the life of the X-ray tube. When immersed in a reservoir of the coolant, the fins facilitate improvement of heat transfer from the shield to the coolant. The cooling effect thereof is further augmented by a convective cooling system provided by a plurality of passages formed within the shield. A cooling unit takes fluid from the reservoir, cools the fluid, and then circulates the cooled fluid through cooling passages. The coolant is then output from the passage and directed over the cooling fins. The passages are oriented to provide a greater heat transfer rate in certain sections of the shield than in other sections.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供能够实现更高冷却效率和防止对冷却剂的过度热应力的X射线管冷却系统。 解决方案：该X射线管冷却系统利用连接在阴极筒和X射线管壳体之间的屏蔽结构，并设置在电子源和目标阳极之间。 屏蔽件具有多个散热片，以改善X射线管和屏蔽罩的整体冷却，从而延长X射线管的使用寿命。 当浸入冷却剂的储存器中时，翅片有助于改善从屏蔽件到冷却剂的传热。 其冷却效果由形成在护罩内的多个通道所提供的对流冷却系统进一步增强。 冷却单元从储存器中取出流体，冷却流体，然后使冷却的流体循环通过冷却通道。 冷却剂然后从通道输出并引导到冷却片上。 通道被定向以在屏蔽的某些部分中提供比在其它部分更大的热传递速率。 版权所有（C）2009，JPO＆INPIT

    Flexible type soft x-ray ionizer
    7.
    发明专利
    Flexible type soft x-ray ionizer 审中-公开

    公开(公告)号：JP2008536284A

    公开(公告)日：2008-09-04

    申请号：JP2008506359

    申请日：2005-10-18

    Applicant: スンチェ・ハイテック・カンパニー・リミテッド

    Inventor： チュン−ハン・シン ,  ビュン−ス・イ ,  ミン−ホ・ジュン ,  ヨン−チュル・ジュン

    IPC: H05F3/06 ,  H01T23/00

    CPC classification number: H01J35/18 ,  H01J35/16 ,  H01J2235/166 ,  H01J2235/168 ,  H01J2235/186 ,  H05F3/06

    Abstract: 本可撓型イオナイザに関し、１．２〜１．５Åの波長の軟Ｘ線を発生させるヘッド部、ヘッド部から軟Ｘ線が漏れるのを遮蔽する軟Ｘ線保護部、制御信号及び制御電圧をヘッド部に供給する電源制御部を備える軟Ｘ線を利用するイオナイザにおいて、軟Ｘ線保護部外部にヘッド部が位置し、ヘッド部と電源制御部を連結する高圧ケーブルを外部衝撃と振動から保護し必要により使用者がヘッド部のヘッド方向を帯電物体に向けて任意の角度で曲げられる可撓管、可撓管の一側端とヘッド部を連結しイオナイザ本体内部に位置した窓で発生されるイオンを帯電物体に放出するする第１連結手段及び、可撓管の他の一側端とイオナイザ本体を連結する第２連結手段をさらに備える。 この時高圧ケーブル内の高圧線が互いに影響を及ぼして近接距離で線間短絡が起こること、相互誘導電圧が発生することを防止するために可撓管内の高圧線をモールディング処理することを特徴とする。

    Surface area is large x-ray tube shield structure
    10.
    发明专利
    Surface area is large x-ray tube shield structure 有权

    公开(公告)号：JP3857983B2

    公开(公告)日：2006-12-13

    申请号：JP2002531451

    申请日：2001-08-10

    Applicant: バリアン・メディカル・システムズ・テクノロジーズ・インコーポレイテッドVarian Medical Systems Technologies, Incorporated

    Inventor： アンドリュース，グレゴリー・シー

    IPC: H01J35/12 ,  H05G1/02 ,  G21K5/02 ,  H01J35/00 ,  H01J35/16 ,  H05G1/04 ,  H05G1/06

    CPC classification number: H05G1/04 ,  H01J35/12 ,  H01J35/16 ,  H01J2235/12 ,  H01J2235/1216 ,  H01J2235/125 ,  H01J2235/1262 ,  H01J2235/1283 ,  H01J2235/168 ,  H05G1/025 ,  H05G1/06

    Abstract: An improved x-ray tube cooling system is disclosed. The system utilizes a shield structure that is connected between a cathode cylinder and an x-ray tube housing and is disposed between the electron source and the target anode. The shield includes a plurality of cooling fins to improve overall cooling of the x-ray tube and the shield so as to extend the life of the x-ray tube and related components. When immersed in a reservoir of coolant fluid, the fins facilitate improved heat transfer by convection from the shield to the to the coolant fluid. The cooling effect achieved with the cooling fins is further augmented by a convective cooling system provided by a plurality of fluid passageways formed within the shield, which are used to provide a fluid path to the coolant. In particular, a cooling unit takes fluid from the reservoir, cools the fluid, then circulates the cooled fluid through the fluid passageways. One or more depressions of "V" shaped cross section defined on the surfaces of the fluid passageways serve to facilitate nucleate boiling of the coolant in the passageway, and thereby materially increase the heat flux through the passageway to the coolant. Additionally, one or more extended surfaces disposed on the surfaces of the fluid passageways also facilitate a relative increase in the rate of heat transfer from the shield structure to the coolant. After flowing through the fluid passageway, the coolant is then discharged from the fluid passageways and directed over the cooling fins. In some embodiments, the fluid passageways are oriented so as to provide a greater heat transfer rate in certain sections of the shield than in other sections. Also disclosed is an improved braze joint for connecting the shield to the x-ray tube housing.

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