SYSTEM AND METHOD OF OPERATION OF MULTIPLE SCREW COMPRESSORS WITH CONTINUOUSLY VARIABLE SPEED TO PROVIDE NOISE CANCELLATION
    1.
    发明申请
    SYSTEM AND METHOD OF OPERATION OF MULTIPLE SCREW COMPRESSORS WITH CONTINUOUSLY VARIABLE SPEED TO PROVIDE NOISE CANCELLATION 有权
    具有连续可变速度的多个螺杆压缩机的系统和操作方法来提供噪声消除

    公开(公告)号:US20080175717A1

    公开(公告)日:2008-07-24

    申请号:US11626482

    申请日:2007-01-24

    IPC分类号: F04B49/20 F04B41/06 F04B49/06

    摘要: A system for cancelling or attenuating noise in at least two positive displacement compressors proximately located from each other for use with a heating or cooling system. A lead compressor and a lag compressor have a controllable rotational speed and phase of operation. A controller selectably controls the rotational speed and the phase of operation of each of the compressors. The controller controls the rotational speed of the compressors at substantially the same speed for each compressor, with a phase-lock loop and a comparator circuit for each compressor. The controller controls the phase of operation of the compressors through an oscillator so that the lead and lag compressor pressure pulses are spaced between successive outlet pressure pulses to effectively double the combined pulsation frequency for noise attenuation.

    摘要翻译: 一种用于抵消或衰减至少两个相邻位置的容积式压缩机中的噪声的系统,用于与加热或冷却系统一起使用。 导向压缩机和滞后压缩机具有可控的转速和运行阶段。 控制器可选地控制每个压缩机的转速和运行阶段。 控制器以每个压缩机基本上相同的速度控制压缩机的转速,具有用于每个压缩机的锁相环和比较器电路。 控制器通过振荡器控制压缩机的运行阶段,使得引导和滞后的压缩机压力脉冲在连续的出口压力脉冲之间间隔开,以有效地加倍组合的脉动频率以进行噪声衰减。

    System and method for noise attenuation of screw compressors
    2.
    发明申请
    System and method for noise attenuation of screw compressors 失效
    螺杆式压缩机噪声衰减系统及方法

    公开(公告)号:US20050123407A1

    公开(公告)日:2005-06-09

    申请号:US10728157

    申请日:2003-12-04

    摘要: A system is provided for attenuating noise in at least two positive displacement compressors proximately located from each other for use with at least one heating or cooling system. A lead compressor and a lag compressor have a selectably controllable rotational speed and a selectably controllable phase of operation. A controller selectably controls the rotational speed and the phase of operation of each of the compressors. The controller controls the rotational speed of the compressors at a predetermined rotational speed that is substantially the same for each of the compressors. The controller controls the phase of operation of the compressors by shifting the phase of operation of the lag compressor so that an outlet pressure pulse operatively produced by the lag compressor is substantially evenly spaced between successive outlet pressure pulses operatively produced by the reference compressor.

    摘要翻译: 提供了一种系统,用于衰减至少两个彼此近似定位的容积式压缩机中的噪声,以与至少一个加热或冷却系统一起使用。 引导压缩机和滞后压缩机具有可选择的可控旋转速度和可选择地可控的操作相位。 控制器可选地控制每个压缩机的转速和运行阶段。 控制器以对于每个压缩机基本上相同的预定转速来控制压缩机的转速。 控制器通过改变滞后压缩机的运行阶段来控制压缩机的运行阶段,使得由滞后压缩机可操作地产生的出口压力脉冲基本上均匀地间隔在由参考压缩机可操作地产生的连续出口压力脉冲之间。

    STRAINER AND ANTI-BACKFLOW DEVICE FOR COMPRESSORS
    3.
    发明申请
    STRAINER AND ANTI-BACKFLOW DEVICE FOR COMPRESSORS 失效
    用于压缩机的过滤器和防反流装置

    公开(公告)号:US20080023081A1

    公开(公告)日:2008-01-31

    申请号:US11461079

    申请日:2006-07-31

    IPC分类号: F16K15/00

    摘要: A backflow and strainer device is presented. The device is a unitary unit that prevents backflow of fluid gas in a compressor and prevents dirt particles and debris from entering the compressor, thereby damaging the components. A valve mechanism moves between an open position and a closed position to either allow or prevent fluid gas from flowing into the compressor. A mesh portion is disposed in the device to trap all dirt particles and debris to prevent them from entering the compressor. The valve mechanism responds to the higher and lower pressures associated with the operation and shutdown of compressors.

    摘要翻译: 提出了一种回流和过滤装置。 该装置是防止压缩机中流体气体回流的整体单元,防止污垢颗粒和碎屑进入压缩机,从而损坏组件。 阀机构在打开位置和关闭位置之间移动,以允许或防止流体气体流入压缩机。 网格部分设置在设备中以捕获所有污垢颗粒和碎屑以防止它们进入压缩机。 阀机构响应与压缩机的操作和关闭相关联的更高和更低的压力。

    System and method to reduce acoustic noise in screw compressors
    4.
    发明申请
    System and method to reduce acoustic noise in screw compressors 有权
    减少螺杆压缩机噪声的系统和方法

    公开(公告)号:US20060018764A1

    公开(公告)日:2006-01-26

    申请号:US10895204

    申请日:2004-07-20

    IPC分类号: F04B49/00 F04B49/06

    CPC分类号: F04C29/06 F04C28/08

    摘要: A system is provided for attenuating tonal acoustic noise associated with a single positive displacement compressor, or multiple positive displacement compressors proximately located from each other. A controller selectably controls the rotational speed and the frequency of operation of each of the compressors. The controller controls the rotational speed of the compressors about a predetermined rotational speed, in a random manner, within the pre-selected speed band to reduce the magnitude of the central tonal acoustic frequency of the pressure pulsations and disperse the sound power over a wider acoustic bandwidth.

    摘要翻译: 提供了一种用于衰减与单个容积式压缩机相关联的音调声学噪声的系统,或者彼此近似定位的多个容积式压缩机。 控制器可选地控制每个压缩机的转速和操作频率。 控制器以预定速度带内的随机方式围绕预定旋转速度控制压缩机的旋转速度,以减小压力脉动的中心音调声频的大小,并将声功率分散在较宽的声学 带宽。

    CAPACITY CONTROL FOR ECONOMIZER REFRIGERATION SYSTEMS
    5.
    发明申请
    CAPACITY CONTROL FOR ECONOMIZER REFRIGERATION SYSTEMS 有权
    经济型制冷系统的能力控制

    公开(公告)号:US20050247071A1

    公开(公告)日:2005-11-10

    申请号:US10842272

    申请日:2004-05-10

    申请人: Paul Nemit

    发明人: Paul Nemit

    IPC分类号: F25B41/00 F25B41/04 F25B49/00

    摘要: An economizer-equipped refrigeration system and method is provided for simultaneous operation of at least one capacity control valve controlling an independent bypass circuit with operation and variable control of the economizer circuit to permit efficient, flexible, and reliable variable system capacity control, without leakage that sacrifices system peak capacity.

    摘要翻译: 提供了一种节省装置的制冷系统和方法,用于同时操作控制独立旁路电路的至少一个容量控制阀,其中节能器电路的操作和可变控制,以允许有效,灵活和可靠的可变系统容量控制,而没有泄漏 牺牲系统峰值容量。

    Apparatus and method of sound attenuation in a system employing a VSD and a quarter-wave resonator
    6.
    发明申请
    Apparatus and method of sound attenuation in a system employing a VSD and a quarter-wave resonator 审中-公开
    在采用VSD和四分之一波长谐振器的系统中,声衰减的装置和方法

    公开(公告)号:US20050194207A1

    公开(公告)日:2005-09-08

    申请号:US10793130

    申请日:2004-03-04

    摘要: A resonator in a closed fluid system includes a body having a passageway in communication with a closed fluid system wherein a piston is movable within the passageway. Each position of the piston within the passageway defines a noise attenuation frequency corresponding to a noise frequency generated by the closed fluid system. A device providing a pressurized fluid from the closed fluid system selectively moves the piston within the passageway to vary the noise attenuation frequency.

    摘要翻译: 闭合流体系统中的谐振器包括具有与闭合流体系统连通的通道的主体,其中活塞可在通道内移动。 通道内活塞的每个位置都定义了与封闭流体系统产生的噪声频率相对应的噪声衰减频率。 从封闭流体系统提供加压流体的装置选择性地使活塞在通道内移动以改变噪声衰减频率。