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    VALVE ARRANGEMENT
    1.
    发明申请
    VALVE ARRANGEMENT 审中-公开
    阀安排

    公开(公告)号：US20130306887A1

    公开(公告)日：2013-11-21

    申请号：US13868618

    申请日：2013-04-23

    Applicant: Danfoss A/S

    Inventor： Verner Smidt ,  Lasse Nicolai Langmaack ,  Siegfried Zenker ,  Erik Haugaard ,  Carsten Christensen ,  Welm Friedrichsen

    IPC: F16K31/12

    CPC classification number: F16K31/12 ,  F16K31/406 ,  Y10T137/7837

    Abstract: The invention concerns a valve arrangement (7) comprising a flow path (11) connecting an inlet (9) and an outlet (10), a closing means (12) arranged in said flow path (11), a resetting means and a first pressure in a first pressure chamber (14) acting in a closing direction on said closing means (12), a pressure of said outlet (10) and a second pressure in a second pressure chamber (18) corresponding to a pressure of said inlet (9) when said closing means (12) is closed acting in opening direction on said closing means (12), said first pressure chamber (14) being connectable to the outlet (10) via an auxiliary valve (13). It is intended to keep small a pressure pulse when opening the valve arrangement (7). This is achieved in that the closing means (12) having a first opening state (A) and a second opening state (B), a flow resistance of said closing means (12) in said first opening state (A) being larger than a flow resistance of said closing means in said second opening state (B).

    Abstract translation: 本发明涉及一种阀装置（7），其包括连接入口（9）和出口（10）的流路（11），布置在所述流路（11）中的关闭装置（12），复位装置和第一 在所述关闭装置（12）上沿关闭方向作用的第一压力室（14）中的压力，所述出口（10）的压力和第二压力室（18）中对应于所述入口 9）当所述关闭装置（12）在所述关闭装置（12）的打开方向上闭合时，所述第一压力室（14）可经由辅助阀（13）连接到出口（10）。 打开阀门装置（7）时要保持较小的压力脉冲。 这是因为具有第一开启状态（A）和第二打开状态（B）的关闭装置（12），所述关闭装置（12）在所述第一打开状态（A）中的流动阻力大于 所述关闭装置在所述第二打开状态（B）中的流动阻力。

    Pump device
    3.
    发明授权
    Pump device 有权

    公开(公告)号：US10590920B2

    公开(公告)日：2020-03-17

    申请号：US14930738

    申请日：2015-11-03

    Applicant: Danfoss A/S

    Inventor： Welm Friedrichsen ,  Lars Martensen ,  Frank Holm Iversen ,  Palle Olsen ,  Stig Kildegaard Andersen

    IPC: F04B1/22 ,  F04B53/10 ,  F04B1/20 ,  F04B1/2021

    Abstract: A pump device (1) is provided comprising: a shaft (2), rotor means (3a, 3b) fixed to said shaft (2) in rotational direction, said rotor means (3a, 3b) having pressure chambers (5a, 5b) the volume of which varying during a rotation of said rotor means (3a, 3b), port plate means (15a, 15b) having a through going opening (16a, 16b) for each of said pressure chambers (5a, 5b) and being connected to said rotor means (3a, 3b) in rotational direction, and valve plate means (17a, 17b) cooperating with said port plate means (15a, 15b). It is intended to pressurize a high volume of fluid, in particular water, within a limited space. To this end said rotor means (3a, 3b) comprise a first rotor (3a) and at least a second rotor (3b), both rotors being fixed to said shaft (2) in rotational direction, said first rotor (3a) having at least a first pressure chamber (5a) and said second rotor (3b) having at least a second pressure chamber (5b), said port plate means (15a, 15b) having a first port plate (15a) and at least a second port plate (15b), said first port plate (15a) having a through going opening (16a) for said first pressure chamber (5a) and being connected to said first rotor (3a) in rotational direction, said second port plate (15b) having a through going opening (16b) for said second pressure chamber (5b) and being connected to said second rotor (3b) in rotational direction, said valve plate means (17a, 17b) having a first valve plate (17a) and at least a second valve plate (17b), said first valve plate (17a) cooperating with said first port plate (15a), and said second valve plate (17b) cooperating with said second port plate (15b), wherein at least one of said first rotor (3a) and said second rotor (3b) comprises force generating means (19) pressing said second port plate (15b) against said second valve plate (17b) even in absence of hydraulic pressure in said second pressure chamber (5b).

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