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    • 4. 发明申请
    • RECIPROCATING COMPRESSOR AND REFRIGERATING APPARATUS HAVING THE SAME
    • 再生压缩机和制冷装置
    • US20110265510A1
    • 2011-11-03
    • US13143503
    • 2009-12-07
    • Jin-Kook KimKyeong-Ho KimYoung-Hwan KimKyoung-Jun Park
    • Jin-Kook KimKyeong-Ho KimYoung-Hwan KimKyoung-Jun Park
    • F25B1/00F04B19/22
    • F04B27/0404F04B27/0423F04B39/0246
    • Disclosed are a reciprocating compressor and a refrigerating apparatus having the same, a ball bearing (300) can be easily stably installed between thrust surfaces (213, 227) of a cylinder block (210) and a crank shaft (220) so as to enhance efficiency of the compressor. Also, a ball bearing (300) can be installed by being inserted into thrust surfaces (213, 227) so to shorten a moment arm that much, thereby decreasing a frictional loss at a journal bearing surface (215), resulting in an energy efficiency of the reciprocating compressor and the refrigerating apparatus having the same. In addition, as an oil hole (226c) of the crank shaft (220) is veiled by the journal bearing surface (215) of the cylinder block (210), even if a ball bearing (300) is employed, oil leaked between the thrust surfaces (213, 227) can be reduced, thereby further enhancing the efficiency of the compressor and the refrigerating apparatus having the same.
    • 公开了一种往复式压缩机和具有该往复式压缩机的制冷装置,可以容易地将滚珠轴承(300)稳定地安装在气缸体(210)的推力面(213,227)和曲轴(220)之间,以便增强 压缩机的效率。 此外,球轴承(300)可以通过插入到推力表面(213,227)中来安装,从而缩短力矩臂,从而减小轴颈轴承表面(215)处的摩擦损失,导致能量效率 的往复式压缩机和具有该往复式压缩机的制冷装置。 此外,由于曲轴(220)的油孔(226c)被气缸体(210)的轴颈轴承面(215)遮盖,所以即使采用滚珠轴承(300),油也在 可以减小推力面(213,227),从而进一步提高压缩机及其制冷装置的效率。
    • 7. 发明授权
    • Method and apparatus for analyzing circuit model by reduction and computer program product for analyzing the circuit model
    • 用于分析电路模型的方法和装置以及用于分析电路模型的计算机程序产品
    • US07987439B2
    • 2011-07-26
    • US12027732
    • 2008-02-07
    • Hong Bo CheYoung Hwan Kim
    • Hong Bo CheYoung Hwan Kim
    • G06F17/50
    • G06F17/5036G06F2217/78
    • Provided are a method and apparatus for analyzing a circuit model by reducing, and a computer program product for analyzing the circuit model. The circuit model at least includes independent current source models, resistance models, and capacitance models. Also, the circuit model forms a resistance capacitance (RC) network with independent current sources. The method includes selecting a node to be removed using resistance information and comparing conductance of a capacitor for a given time step and the total conductance of the node. Further, the method includes removing the selected nodes and generating RC elements and independent current sources using adjacent nodes, which maintain the accuracy of node voltages of a circuit reduced in an accuracy order used for entrywise perturbation of the corresponding circuit equation. Moreover, an efficient method of handling the independent current sources while reducing the circuit is provided.
    • 提供了一种通过减少电路模型分析的方法和装置,以及用于分析电路模型的计算机程序产品。 电路模型至少包括独立的电流源模型,电阻模型和电容模型。 此外,电路模型形成具有独立电流源的电阻电容(RC)网络。 该方法包括使用电阻信息来选择要去除的节点,并且比较给定时间步长的电容器的电导率和节点的总电导率。 此外,该方法包括使用相邻节点去除所选择的节点并产生RC元件和独立电流源,其保持电路的节点电压的精度以用于相应电路方程的入门扰动的精度顺序降低。 此外,提供了一种在减少电路的同时处理独立电流源的有效方法。
    • 10. 发明授权
    • Communication system using length shift keying modulation method
    • 通信系统采用长移键控调制方式
    • US07933320B2
    • 2011-04-26
    • US11499700
    • 2006-08-07
    • Jae-hyon KimYoung-hwan KimSeong-soo Lee
    • Jae-hyon KimYoung-hwan KimSeong-soo Lee
    • H04B1/38H04L5/16
    • H04L27/00
    • A communication system using a length shift keying (LSK) modulation method provides a transmitter having a carrier signal generator for generating carrier signals, and a modulator for modulating lengths of the carrier signals from the carrier signal generator according to combinations of data bits, and a receiver having an integrator for calculating an energy value by integrating the carrier signal that corresponds to a data bit combination, and a data judgment unit for judging the data bit combination by comparing the energy value with a predetermined threshold value. Power is maintained without changing the bandwidth of a communication signal when the communication signal is modulated.
    • 使用长移键控(LSK)调制方法的通信系统提供具有用于产生载波信号的载波信号发生器的发射机,以及用于根据数据比特的组合来调制来自载波信号发生器的载波信号长度的调制器, 具有用于通过对与数据位组合相对应的载波信号进行积分来计算能量值的积分器的接收机,以及用于通过将能量值与预定阈值进行比较来判断数据比特组合的数据判断单元。 当通信信号被调制时,维持功率而不改变通信信号的带宽。