Manufacture of solar collector panels
    1.
    发明授权
    Manufacture of solar collector panels 失效
    太阳能集热板制造

    公开(公告)号:US4331503A

    公开(公告)日:1982-05-25

    申请号:US64216

    申请日:1979-08-06

    摘要: A method of making a solar collector panel comprises the steps of applying a quantity of solvent to one face of a synthetic foam sheet to form a pattern of solvent stripes on said face, allowing the applied solvent to etch a pattern of grooves having highly irregular surfaces, painting the surfaces of the grooves exposed by the action of the solvent with light-absorbing coloring matter, and securing a light-transmitting cover sheet to the remaining portions of said face. The cover sheet, when secured, conforms to the shape of the face prior to the solvent application step, whereby the grooves and the cover sheet together form channels for the flow of a heat transfer fluid such as water or air.

    摘要翻译: 制造太阳能收集器面板的方法包括以下步骤:向合成泡沫片的一个面施加一定量的溶剂以在所述面上形成溶剂条纹图案,允许施加的溶剂蚀刻具有高度不规则表面的凹槽图案 通过吸光色素对溶剂的作用露出的槽的表面进行喷涂,并将透光盖板固定在所述面的其余部分上。 覆盖片在固定时在溶剂施加步骤之前符合面的形状,由此沟槽和覆盖片一起形成用于传热流体例如水或空气流动的通道。

    Underwater voice communicator
    2.
    发明授权
    Underwater voice communicator 失效
    水下语音通讯器

    公开(公告)号:US4852682A

    公开(公告)日:1989-08-01

    申请号:US100175

    申请日:1987-09-23

    IPC分类号: B63C11/26 G10K11/18

    CPC分类号: G10K11/18 B63C11/26

    摘要: An underwater communicator comprising a transmitter for transmitting acoustical energy between mediums having differing impedance. The transmitter includes first and second ends. The first end is exposed to a first medium while the second end is exposed to a second medium. In the preferred embodiment, the transmitter is formed from a material having a substantially identical impedance to the second medium. An acoustical lens is positioned adjacent the first end of the transmitter. The acoustical lens has a substantially planar front face and a substantially concave shaped rear face. The acoustical lens includes a plurality of spaced vertically extending plates. The vertically extending plates form a substantially right angle with the front face of the acoustical lens. A plurality of spaced plates intersect the vertically extending plates and form an acute angle with the front face of the acoustical lens, thereby forming a plurality of inclined passageways. Upon impact of the acoustical waves on the acoustical lens, the acoustical lens focuses and regulates the waves to maximize the concentration of the same upon impact of the transmitter at any given time.

    摘要翻译: 一种水下通信器,包括用于在具有不同阻抗的介质之间传输声能的发射器。 发射机包括第一和第二端。 第一端暴露于第一介质,而第二端暴露于第二介质。 在优选实施例中,发射器由具有与第二介质基本相同的阻抗的材料形成。 声透镜位于发射器的第一端附近。 声透镜具有基本平坦的前表面和大致凹形的后表面。 声透镜包括多个间隔开的垂直延伸的板。 垂直延伸的板与声透镜的前表面形成大致直角。 多个间隔板与垂直延伸的板相交,并与声透镜的前表面形成锐角,由此形成多个倾斜通道。 在声波对声透镜的影响下,声透镜聚焦并调节波,以便在任何给定时间的发射器的影响下使其相应的浓度最大化。