公开(公告)号：WO1997014205A1

公开(公告)日：1997-04-17

申请号：PCT/DK1996000418

申请日：1996-10-03

Applicant: DANFOSS A/S ,  BLÅBJERG, Frede

Inventor： DANFOSS A/S

IPC: H02H07/122

CPC classification number: G01R31/42 ,  G01R31/282 ,  H02H7/1227 ,  H02P29/0241

Abstract: When measuring fault currents in an inverter, in which controlled semiconductor switches are pulse width modulated, PWM-VSI, to convert a DC voltage from an intermediary circuit to a 3-phase AC voltage, DC currents are measured in the positive and the negative rail of the inverter, so that it is possible to detect faults originating from both short-circuits and earthing faults, maintaining a high sensitivity when reconstructing phase currents, which can be made by a so-called vector modulation, called (SFAVM), in which the states of the individual transistor switches are defined in a vector room (SFAVM) having six active states in which current flows in the inverter and two active states in which no current flows in the inverter. On the basis of the DC current measurements the phase currents can be reconstructed, and all faults can be detected. As mentioned, the measurement takes place as a measurement of DC currents, and for this purpose two transducers are used, which are constructed in a way that at the same current they give two different physical values, so that if there is no fault on the inverter, the phase current can still be reconstructed. The invention is especially expedient in connection with motor controls, active inverters, active filters, compensators, etc.

Abstract translation: 当测量逆变器中的受限半导体开关进行脉宽调制的故障电流时，PWM-VSI将直流电压从中间电路转换为三相交流电压，直流电流在正极和负极轨道 使得可以检测由短路和接地故障引起的故障，在重构相电流时保持高灵敏度，这可以通过所谓的（SFAVM）所谓的矢量调制进行，其中 单个晶体管开关的状态被定义在具有六个有效状态的向量室（SFAVM）中，其中电流在逆变器中流动，并且在逆变器中没有电流流动的两个活动状态。 在直流电流测量的基础上，可以重建相电流，并且可以检测所有的故障。 如上所述，测量是作为直流电流的测量而进行的，为此，使用两个换能器，它们的构造方式是在相同的电流下给出两个不同的物理值，以便如果没有故障 逆变器，相电流仍然可以重构。 本发明特别适用于电动机控制，有源逆变器，有源滤波器，补偿器等。

公开(公告)号：WO1997013691A1

公开(公告)日：1997-04-17

申请号：PCT/DK1996000420

申请日：1996-10-03

Applicant: DANFOSS A/S ,  ROM, Holger, Krogsgård

Inventor： DANFOSS A/S

IPC: B65D05/07

CPC classification number: B62D5/09

Abstract: A valve arrangement for a hydraulic control apparatus, in particular a hydrostatic steering device, has a priority valve (1). From the priority outlet (CF) thereof a load pressure sensing line (19) extends to a load-pressure sensing point in the control apparatus (3). A pressure control valve (18) which holds the pressure arising at it constant is inserted in the load pressure sensing line (19). In this manner, with the customary priority valve largely being maintained, the stand-by pressure of this priority valve is increased.

Abstract translation: 用于液压控制装置，特别是静液压转向装置的阀装置具有优先阀（1）。 从其优先出口（CF），负载压力感测线（19）延伸到控制装置（3）中的负载压力感测点。 保持恒定的压力的压力控制阀（18）被插入到负载压力感测线（19）中。 以这种方式，通常主要维持阀门的优先级，从而提高了该优先阀的待机压力。

公开(公告)号：WO1997013673A1

公开(公告)日：1997-04-17

申请号：PCT/DK1996000419

申请日：1996-10-03

Applicant: DANFOSS A/S ,  ROM, Holger, Krogsgård

Inventor： DANFOSS A/S

IPC: B62D05/07

CPC classification number: B62D5/07

Abstract: A priority valve (1) for a hydraulic control apparatus (3), in particular a hydrostatic steering device, has a slide (10), a first pressure chamber (11) arranged at one end of the slide and connected by way of a first throttle (14) to a priority outlet (CF), and a second pressure chamber (12) arranged at the other end of the slide and having a spring (13). This second pressure chamber is connected by way of a series connection of first throttle (14), first pressure chamber (11) and second throttle (15) to the outlet (CF) and by way of a third throttle (13) to the load pressure connection (LS). In this manner the first pressure chamber (11) has liquid under pressure flowing continuously through it, with the result that operation is improved.

Abstract translation: 用于液压控制装置（3）的优先阀（1），特别是静液压转向装置，具有滑块（10），第一压力室（11），其布置在滑块的一端并通过第一 节气门（14）到优先出口（CF），以及布置在滑块的另一端并具有弹簧（13）的第二压力室（12）。 该第二压力室通过第一节气门（14），第一压力室（11）和第二节气门（15）到出口（CF）的串联连接并通过第三节气门（13）连接到负载 压力连接（LS）。 以这种方式，第一压力室（11）具有连续通过其的压力下的液体，结果是提高了操作。

公开(公告)号：WO1997012123A1

公开(公告)日：1997-04-03

申请号：PCT/DK1996000396

申请日：1996-09-19

Applicant: DANFOSS A/S ,  HANSEN, Gunnar, Lyshoj ,  TYCHSEN, Tom ,  LARSEN, Hans, Erik ,  PETERSEN, Hans, Christian

Inventor： DANFOSS A/S

IPC: F01C01/10

CPC classification number: F03C2/08 ,  F04C2/103 ,  F04C11/001

Abstract: A hydraulic machine (1) is disclosed, having a gearwheel (4), which is arranged on a shaft (2) so that they rotate together and which has a first external toothing (5), a gear ring (7), which has a second external toothing (8) and a first internal toothing (6) which engages with the first external toothing (5), a toothed rim (10), which has a second internal toothing (9) that engages with the second external toothing (8), and having a commutation arrangement for supplying and discharging in the correct order hydraulic fluid in pressure pockets which are formed in the first and/or second toothed coupling in each case between external and internal toothing. It is desirable to be able to improve the operational behaviour of such a machine. For that purpose, on both axial sides of gearwheel (4) and gear ring (7) there is a respective lateral plate (34, 37), which plates are joined axially to one another and move jointly with the gearwheel (4) or the gear ring (7).

Abstract translation: 公开了一种具有齿轮（4）的液压机（1），齿轮（4）布置在轴（2）上，使得它们一起旋转并具有第一外齿（5），齿圈（7），齿圈 与第一外齿（5）接合的第二外齿（8）和第一内齿（6），齿圈（10），其具有与第二外齿（5）啮合的第二内齿（9） 并且具有用于以正确的顺序供应和排出的换向装置，该压力缸在形成在第一和/或第二齿形联接器中的压力袋中，每种情况下在外部和内部齿之间。 期望能够改善这种机器的操作行为。 为此，在齿轮（4）和齿圈（7）的两个轴向侧上都有相应的侧板（34,37），这些板彼此轴向地相接并与齿轮（4）或 齿圈（7）。

公开(公告)号：WO1997010535A1

公开(公告)日：1997-03-20

申请号：PCT/DK1996000380

申请日：1996-09-12

Applicant: DANFOSS A/S ,  FREDERIKSEN, Bjarne ,  PERSON, Stig, Gron ,  NISSEN, Morten, Paasch ,  ANDERSEN, Erik, Haarbo ,  MARKVART, Arne

Inventor： DANFOSS A/S

IPC: G05D23/00

CPC classification number: G05D23/125 ,  F24D19/1015

Abstract: An adjustment device (1) for a radiator thermostat is disclosed, having a housing (17, 18, 2) in which a temperature sensor (6) is arranged. In such an adjustment device it is desirable to improve the thermal behaviour. For that purpose the housing (17, 18) is closed at its exterior.

Abstract translation: 公开了一种用于散热器恒温器的调节装置（1），具有布置有温度传感器（6）的壳体（17,18,2）。 在这种调节装置中，期望改善热行为。 为此，外壳（17,18）在其外部封闭。

公开(公告)号：WO1997006045A1

公开(公告)日：1997-02-20

申请号：PCT/DK1996000337

申请日：1996-08-08

Applicant: DANFOSS A/S ,  ROM, Holger, Krogsgård

Inventor： DANFOSS A/S

IPC: B62D05/06

CPC classification number: B62D5/061 ,  B62D12/00

Abstract: A valve arrangement (9) for hydraulic work motors, especially for steering devices, that are operated by a control device, has an inlet (14) to be connected to a motor line, an outlet (18) to be connected to a tank line and a valve (10, 11) between the inlet and the outlet. The valve (10, 11) is controlled in dependence on the rate of rise of the input pressure and opens when the rate of rise exceeds a predetermined value. In that manner, undesirable acceleration of the work motor can be prevented.

Abstract translation: 用于由控制装置操作的用于液压作业马达，特别是用于转向装置的阀装置（9）具有与马达线连接的入口（14），与罐线连接的出口（18） 以及在入口和出口之间的阀（10,11）。 阀门（10,11）根据输入压力的上升率进行控制，当上升速度超过预定值时，阀门打开。 以这种方式，可以防止作业马达的不期望的加速。

公开(公告)号：WO1996026375A1

公开(公告)日：1996-08-29

申请号：PCT/DK1996000074

申请日：1996-02-19

Applicant: DANFOSS A/S ,  MOLBÆK, Jens, Jorgen

Inventor： DANFOSS A/S

IPC: F16K01/52

CPC classification number: F16K1/523

Abstract: In a stop valve (1) in which the maximum percentage opening is adjustable, the restriction of the valve is carried out by adjustment of a valve rod (3), on which a valve disc (4) is fixed, which cooperates with a valve seat (5) within the valve body (2) of the stop valve. The valve rod (3) consists of two axially movable parts (6, 7) which are adjustable in relation to each other by means of a driver connection, the most inner part (7) supporting the valve disc (4). In order to facilitate the adjustment and simplify the design the axially extreme valve rod part (6) is cylindric and has external threads (8), which cooperate with threads which are fixed in relation to the valve body. When said valve rod part (6) is rotated it moves in axial direction to or away from said valve seat (5). The axially inner valve rod part (7) is inserted in the cylindric extreme valve rod part (6) and the driver connection consists of a friction arrested screw connection (9) connecting the two valve rod parts.

Abstract translation: 在其中最大百分比开度是可调节的截止阀（1）中，阀的限制通过调节固定有阀盘（4）的阀杆（3）来进行，阀杆（3）与阀 阀座（5）在止动阀的阀体（2）内。 阀杆（3）由两个轴向可移动部件（6,7）组成，这两个部件可通过驱动器连接相对于彼此调节，最内部部分（7）支撑阀盘（4）。 为了便于调节和简化设计，轴向极限阀杆部分（6）是圆柱形的并且具有外螺纹（8），其与相对于阀体固定的螺纹配合。 当所述阀杆部分（6）旋转时，其在轴向方向上移动或离开所述阀座（5）。 轴向内部阀杆部分（7）插入到圆柱形阀杆部分（6）中，并且驱动器连接件由连接两个阀杆部件的摩擦阻止的螺纹连接件（9）组成。

公开(公告)号：WO1996024029A1

公开(公告)日：1996-08-08

申请号：PCT/DK1996000042

申请日：1996-01-26

Applicant: DANFOSS A/S ,  LOLK, Soren ,  HANSEN, Henning, Max

Inventor： DANFOSS A/S

IPC: G01F01/66

CPC classification number: G01F1/662

Abstract: The present invention relates to an ultrasonic flowmeter for measuring flows of liquid or gas through a measuring tube which is equipped with ultrasonic transducers, where the ultrasound is reflected by the tube wall, by focussing reflecting plane. If at least one focussing reflecting plane is ellipsoid, and the transducers are placed in the focal points of the ellipse, a simple and cheap ultrasonic flowmeter can be provided, which can carry out accurate and quick measurings.

Abstract translation: 本发明涉及一种超声波流量计，用于通过测量管测量液体或气体的流量，所述测量管装备有超声波被管壁反射的超声波换能器，通过聚焦反射平面。 如果至少有一个聚焦反射平面是椭圆体，并且换能器被放置在椭圆的焦点中，则可以提供简单且便宜的超声波流量计，其可以进行准确和快速的测量。

公开(公告)号：WO1996023347A1

公开(公告)日：1996-08-01

申请号：PCT/DK1996000030

申请日：1996-01-19

Applicant: DANFOSS A/S ,  NIELSEN, Soren, Ejnar ,  JÆGER, Jens, Ulrik ,  JENSEN, Johnny, Wahl ,  THOGERSEN, Paul, Bach

Inventor： DANFOSS A/S

IPC: H02M07/5387

CPC classification number: G01R19/25 ,  H02M7/53871 ,  H02M2001/0009

Abstract: The present invention relates to the measuring of phase currents in an inverter, where by pulse width modulation controlled semiconductor switches invert a direct voltage from an intermediate circuit into a three-phase alternating voltage. The phase currents are measured by measuring the intermediate circuit current when an active switch state creates an unambiguous relation between the intermediate circuit current and a phase current. Time shifts in the phase current measuring can be avoided by measuring the value id of the intermediate circuit current in two separate settings ( u 1, u 1; u 6, u 6) of the same active switch state ( u 1; u 6) in a modulation period (TSW) and by creating a resulting mean value of the measured values. The mean values can be related in time to the centre of the modulation period, and the third phase current at the same time can be calculated, because the sum of the phase currents is equal to zero.

Abstract translation: 本发明涉及逆变器中的相电流测量，其中通过脉冲宽度调制控制的半导体开关将来自中间电路的直流电压转换成三相交流电压。 当有源开关状态产生中间电路电流和相电流之间的明确关系时，通过测量中间电路电流来测量相电流。 可以通过在两个单独的设置（u u，u 1，u u，u u）中测量中间电路电流的值id来避免相电流测量中的时间偏移， 在调制周期（TSW）中具有相同的有效开关状态（u1u，u6）的相同的有源开关状态（uu，u，u）6），以及 通过创建所得到的测量值的平均值。 平均值可以在时间上与调制周期的中心相关，并且可以计算同时的第三相电流，因为相电流的和等于零。

公开(公告)号：WO1996019691A1

公开(公告)日：1996-06-27

申请号：PCT/DK1995000507

申请日：1995-12-18

Applicant: DANFOSS A/S ,  MOLBÆK, Jens, Jorgen

Inventor： DANFOSS A/S

IPC: F16K31/365

CPC classification number: G05D16/0655

Abstract: A diaphragm-controlled differential-pressure valve has a valve housing (1) which is constructed in one piece with the lower part (5) of a diaphragm capsule (6). The associated cover (9) carries a spring housing (20) accommodating the set-point spring (18). This produces a valve having a very small overall height.

Abstract translation: 隔膜控制的差压阀具有与隔膜囊（6）的下部（5）一体构成的阀壳体（1）。 相关联的盖（9）承载容纳设定点弹簧（18）的弹簧壳体（20）。 这产生具有非常小的总体高度的阀。