Pump device
    2.
    发明公开
    Pump device 有权
    Pumpvorrichtung

    公开(公告)号:EP3020967A1

    公开(公告)日:2016-05-18

    申请号:EP14192642.8

    申请日:2014-11-11

    申请人: Danfoss A/S

    IPC分类号: F04B1/20 F04B1/22

    CPC分类号: F04B1/22 F04B1/2021 F04B53/10

    摘要: 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).

    摘要翻译: 一种泵装置(1),包括:轴(2),以旋转方向固定到所述轴(2)的转子装置(3a,3b),所述转子装置(3a,3b)具有压力室(5a,5b) 在所述转子装置(3a,3b)旋转期间的体积变化,对于每个所述压力室(5a,5b)具有贯通孔(16a,16b)的端口板装置(15a,15b) 与旋转方向的转子装置(3a,3b)和与所述端口板装置(15a,15b)配合的阀板装置(17a,17b)。 旨在在有限的空间内对大量流体,特别是水进行加压。 为此,所述转子装置(3a,3b)包括第一转子(3a)和至少第二转子(3b),两个转子沿旋转方向固定到所述轴(2),所述第一转子(3a)具有 至少第一压力室(5a)和所述第二转子(3b)具有至少第二压力室(5b),所述端口板装置(15a,15b)具有第一端口板(15a)和至少第二端口板 (15b),所述第一端口板(15a)具有用于所述第一压力室(5a)的通过开口(16a)并且沿旋转方向连接到所述第一转子(3a),所述第二端口板(15b)具有 通过用于所述第二压力室(5b)的开口(16b)并且沿旋转方向连接到所述第二转子(3b),所述阀板装置(17a,17b)具有第一阀板(17a)和至少第二 阀板(17b),所述第一阀板(17a)与所述第一端口板(15a)配合,所述第二阀板(17b)与所述第一阀板 第二端口板(15b),其中所述第一转子(3a)和所述第二转子(3b)中的至少一个包括将所述第二端口板(15b)压靠所述第二阀板(17b)的力产生装置(19) 在所述第二压力室(5b)中不存在液压。

    Pump arrangement
    4.
    发明公开
    Pump arrangement 有权
    Pumpenanordnung

    公开(公告)号:EP3020969A1

    公开(公告)日:2016-05-18

    申请号:EP14192638.6

    申请日:2014-11-11

    申请人: Danfoss A/S

    IPC分类号: F04B1/22 F04B11/00

    摘要: A pump arrangement (1) is provided comprising a driving shaft (2), cylinder drum means (3a, 3b) fixed to said shaft (2) in rotational direction and having a plurality of cylinders (6a, 6b), and a piston (7a, 7b) in each cylinder, each piston (7a, 7b) having a slide shoe (8a, 8b) in contact with driving surface means (8a, 8b). Such a pump arrangement should produce a pressure with low undulations.
    To this end said cylinder drum means (3a. 3b) comprise at least a first cylinder drum (3a) and a second cylinder drum (3b), said cylinder drums (3a, 3b) being fixed to said common shaft (2) in rotational direction, wherein the cylinder drums (3a, 3b) are offset with respect to each other in rotational direction.

    摘要翻译: 提供一种泵装置(1),包括驱动轴(2),沿旋转方向固定到所述轴(2)的气缸鼓装置(3a,3b),并具有多个气缸(6a,6b)和活塞 7a,7b),每个活塞(7a,7b)具有与驱动表面装置(8a,8b)接触的滑动滑块(8a,8b)。 这种泵装置应产生低起伏的压力。 为此,所述气缸滚筒装置(3a,3b)至少包括第一气缸滚筒(3a)和第二气缸滚筒(3b),所述气缸滚筒(3a,3b)旋转地固定到所述公共轴 方向,其中气缸滚筒(3a,3b)在旋转方向上相对于彼此偏移。

    Valve arrangement
    6.
    发明公开
    Valve arrangement 有权
    Ventilanordnung

    公开(公告)号:EP2256392A1

    公开(公告)日:2010-12-01

    申请号:EP09007191.1

    申请日:2009-05-29

    申请人: Danfoss A/S

    IPC分类号: F16K31/40 F16K31/383

    摘要: 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).

    摘要翻译: 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)中对应于所述入口的压力 9)当所述关闭装置(12)在所述关闭装置(12)上沿开启方向闭合时,所述第一压力室(14)可经由辅助阀(13)连接到出口(10)。 旨在在打开阀门装置(7)时保持较小的压力脉冲。 这是因为具有第一打开状态(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。

    WATER-HYDRAULIC MACHINE
    7.
    发明公开
    WATER-HYDRAULIC MACHINE 审中-公开
    WASSER-HYDRAULIKMASCHINE

    公开(公告)号:EP3109471A1

    公开(公告)日:2016-12-28

    申请号:EP16174108.7

    申请日:2016-06-13

    申请人: Danfoss A/S

    IPC分类号: F04B1/20 F04B53/16 F16C33/20

    摘要: A water-hydraulic machine (1) is disclosed with at least two parts which are movable relative to one another, of which one has a surface composed of a plastic (5, 12, 13, 15, 19) with friction-reducing properties. Improvement of friction-reducing properties is achieved by injection molding a composite material on the surface of at least one of the two parts, wherein the composite comprises a basic polymer resin, preferably PEEK, and ceramic filler particles, the particles having a dimension of up to 1 μm. The friction-reducing surface treatment may be utilised for any parts in relative motion in the water-hydraulic machine, such as cyilnder liner, sliding shoe for swash plates, wear rings in general or bearing surfaces. With such a design the wear in case of a water-hydraulic machine should be kept low.

    摘要翻译: 公开了一种水力机械(1),其具有至少两个相对于彼此可移动的部件,其中一个具有由具有摩擦减小特性的塑料(5,12,13,15,19)组成的表面。 通过在两部分中的至少一个部分的表面上注射成型复合材料来实现降低摩擦性能的改善,其中复合材料包括基本聚合物树脂,优选PEEK和陶瓷填料颗粒,颗粒的尺寸为上 至1¼m。 摩擦减小表面处理可用于水力机械中的任何相对运动的部件,例如循环冷却器衬套,斜盘滑动鞋,通常的耐磨环或轴承表面。 通过这样的设计,水压机器的磨损应保持较低。

    Add-in device for a hydraulic control arrangement
    8.
    发明公开
    Add-in device for a hydraulic control arrangement 失效
    ZusätzlicheVorrichtungfüreine hydraulische Steuervorrichtung

    公开(公告)号:EP0716234A2

    公开(公告)日:1996-06-12

    申请号:EP95203343.9

    申请日:1995-12-05

    申请人: Danfoss A/S

    IPC分类号: F15B13/00

    摘要: An add-in device for a hydraulic control arrangement provides a function unit (24) to be arranged between successive modules, which function unit takes the connection between the pump channels of the preceding and the subsequent module by way of at least one function slide valve (117, 217) which is arranged to be displaced into several positions. In its positions this function slide valve initiates different functions, by which fluid under pressure is arranged to be admitted to the subsequent control module in at least two different amounts and/or in at least two different levels of pressure. In this manner operation of the subsequent control modules can be better matched to the particular operating conditions that obtain.

    摘要翻译: 用于液压控制装置的附加装置提供功能单元(24),其被布置在连续的模块之间,功能单元通过至少一个功能滑阀来连接前一个和后续模块的泵通道之间的连接 (117,217),其被布置成移位到多个位置。 在其位置,该功能滑阀启动不同的功能,通过该功能将压力下的流体布置成以至少两个不同的量和/或至少两个不同的压力水平允许进入后续的控制模块。 以这种方式,后续控制模块的操作可以更好地与获得的特定操作条件匹配。