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    • 44. 发明授权
    • Linear compressor
    • 线性压缩机
    • US07179065B2
    • 2007-02-20
    • US11191902
    • 2005-07-29
    • Dong Han Kim
    • Dong Han Kim
    • F04B17/04F04B35/04
    • F04B35/045F04B39/102
    • Disclosed herein is a linear compressor. In the present invention, a spring sheet is equipped in an exhale cover to prevent an edge and an outer circumference of an exhale spring from touching with the exhale cover. A surface of the spring sheet is treated with a metal of the high hardness, thereby protecting against its abrasion and transformation, caused by a repetitive load from the exhale spring. Furthermore, the durability is improved by enduring the excessive or local load from the exhale spring.
    • 本文公开了一种线性压缩机。 在本发明中,弹簧片配置在呼气罩中,以防止呼气弹簧的边缘和外周与呼气罩接触。 弹簧片的表面用高硬度的金属处理,从而防止由于呼气弹簧的重复载荷引起的磨损和变形。 此外,通过忍受来自呼气弹簧的过量或局部负荷来提高耐久性。
    • 48. 发明申请
    • Method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in OFDMA system having smart antenna
    • 具有智能天线的OFDMA系统中的上行链路载波频率同步和天线权重向量估计的方法和装置
    • US20060233270A1
    • 2006-10-19
    • US11303484
    • 2005-12-16
    • Jae-Young AhnYong-Soo ChoDong-Han Kim
    • Jae-Young AhnYong-Soo ChoDong-Han Kim
    • H04K1/10
    • H04L27/2657H04B7/0851H04L27/2675
    • Provided are a method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in an Orthogonal Frequency Division Multiple Access System (OFDMA) having a smart antenna. The inventive method comprises the steps of receiving and storing training symbols in the time domain transmitted to estimate an antenna weight vector during a training symbol transmission interval; estimating carrier frequency offsets using training symbols in the frequency domain that are obtained by performing a Fast Fourier Transformation (FFT) algorithm with respect to the training symbols received during the training symbol transmission interval; compensating the stored training symbols in the time domain based on the estimated carrier frequency offsets; and estimating an antenna weight vector using training symbols in the frequency domain that are obtained by applying an FFT algorithm with respect to the training symbols in the time domain derived by compensating the carrier frequency offsets during the training symbol transmission interval.
    • 提供了一种具有智能天线的正交频分多址系统(OFDMA)中的上行链路载波频率同步和天线权重向量估计的方法和装置。 本发明的方法包括以下步骤:在训练符号发送间隔期间,在发送的时域中接收和存储训练符号以估计天线权重向量; 使用通过针对在训练符号传输间隔期间接收到的训练符号执行快速傅里叶变换(FFT)算法获得的频域中的训练符号来估计载波频率偏移; 基于估计的载波频率偏移补偿在时域中存储的训练符号; 以及使用通过在训练符号发送间隔期间通过补偿载波频率偏移导出的时域中的训练符号应用FFT算法获得的频域中的训练符号来估计天线权重向量。
    • 50. 发明申请
    • Scroll compressor
    • 涡旋压缩机
    • US20060093506A1
    • 2006-05-04
    • US11178450
    • 2005-07-12
    • Dong-Han Kim
    • Dong-Han Kim
    • F01C1/02F04C2/00F01C1/063F04C18/00F03C2/00
    • F04C29/0021F04C18/0215
    • A scroll compressor includes an orbiting scroll orbiting and having a boss in which an eccentric portion of a rotating shaft is inserted, a main frame having a pocket in which a boss of the orbiting scroll is inserted and a thrust bearing surface to which a thrust bearing surface of the orbiting scroll is supported, and an elastic support portion installed at an upper surface of the main frame and functioning as a buffer so as to prevent abrasion of the thrust bearing surface by being elastically deformed when the orbiting scroll is deformed. Thus, although the orbiting scroll is deformed during compression, the scroll compressor can reduce a friction loss between the thrust bearing surfaces of the orbiting scroll and the main frame and prevent abrasion of the thrust bearing surfaces.
    • 涡旋压缩机包括绕动涡旋盘旋转的涡旋盘,其具有插入旋转轴的偏心部的凸台,具有凹槽的主框架,其中绕动涡旋盘的凸台被插入其中,推力轴承表面 支撑绕动涡盘的表面,以及弹性支撑部,其安装在主框架的上表面并用作缓冲器,以防止当绕动涡旋件变形时弹性变形推力轴承表面的磨损。 因此,涡旋压缩机虽然在压缩过程中变形,但也可以减小绕动涡盘的推力轴承面与主机架之间的摩擦损失,并防止推力轴承面的磨损。