EXHAUST HEADERS WITH INTEGRATED HEAT SHIELDING AND THERMAL SYPHONING

    公开(公告)号:US20210262379A1

    公开(公告)日:2021-08-26

    申请号:US17184428

    申请日:2021-02-24

    Abstract: An exhaust header with an integrated heat shield is disclosed. In one aspect of the disclosure, the exhaust header comprises a body including an inner wall that defines a cavity through which exhaust gases can be routed. An outer wall is integrally formed with, and radially offset from, the inner wall to define an air gap through which an airflow can be received at an input of the exhaust header and passed along a periphery of the body to collect thermal radiation and route it through an outlet duct. In some embodiments, the exhaust header is coupled to a turbocharger, which itself is coupled to an exhaust outlet of the body and separately, the air gap for effecting an airflow about the turbocharger's perimeter. Further, in various embodiments, the exhaust header is additively manufactured to produce the integrated heat shield and other header components.

    APPARATUS AND METHODS FOR ADDITIVELY MANUFACTURING MICROTUBE HEAT EXCHANGERS

    公开(公告)号:US20190011187A1

    公开(公告)日:2019-01-10

    申请号:US15643405

    申请日:2017-07-06

    Abstract: Apparatus and methods for additively manufacturing microtube heat exchangers are disclosed herein. A heat exchanger header is additively manufactured with high density microtube arrays to achieve an integrated structure achieving values of heat transfer effectiveness Eff up to ninety percent and values of transfer surface area densities up to 20,000 m2/m3. The heat exchanger header can be printed with a high density microtube array to separate different types of fluids or liquids into different microtubes and to form a high quality seal. Additionally, microtubes and/or microtube arrays can be additively manufactured to be curved or to have pleats; and microtube lattice arrays can be compactly positioned within hollow support structures.

    POWDER-BED FUSION BEAM SCANNING
    25.
    发明申请

    公开(公告)号:US20180311760A1

    公开(公告)日:2018-11-01

    申请号:US15582470

    申请日:2017-04-28

    Abstract: Systems and methods for beam scanning for powder bed fusion (PBF) systems are provided. A PBF apparatus can include a structure that supports a layer of powder material, an energy beam source that generates an energy beam, and a deflector that applies the energy beam to fuse an area of the powder material in the layer at multiple locations, the deflector being further configured to apply the energy beam to each of the locations multiple times. A PBF apparatus can include a deflector configured to provide multiple scans to a layer powder material supported by the structure. A PBF apparatus can include a deflector that applies the energy beam to fuse an area of the powder material in the layer at multiple locations, the deflector being further configured to apply the energy beam in a raster scan.

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