公开(公告)号：WO1997047511A1

公开(公告)日：1997-12-18

申请号：PCT/DK1997000247

申请日：1997-06-04

Applicant: DANFOSS A/S ,  SORENSEN, Soren, Nygaard

Inventor： DANFOSS A/S

IPC: B62D05/30

CPC classification number: B62D5/32 ,  B62D5/097

Abstract: A hydrostatic steering device has two steering systems (1, 2), each having a pump (5, 13), a steering unit (3, 11) and a steering motor (10, 16). A steering wheel (20) is common for both steering units (3, 11). The device comprises a change-over valve (24) which, in an operation position (A), creates a hydraulic connection of the motor hoses (14, 15) of the second steering system (2), and in an emergency position (B), the motor hoses (8, 9) of the first steering system, and a switching device (25) reacting on the occurrence of a fault in the first steering system (1) and switching the change-over valve (24) from the operation position (A) to the emergency position (B). This enables a steering operation, also on failure of the first steering system, for the operation of the steering wheel, however, only a relatively small torque is required.

Abstract translation: 静液压转向装置具有两个转向系统（1,2），每个转向系统具有泵（5,13），转向单元（3,11）和转向马达（10,16）。 方向盘（20）对于两个转向单元（3,11）是共同的。 该装置包括转换阀（24），其在操作位置（A）中产生第二转向系统（2）的电动机软管（14,15）的液压连接，并在紧急位置（B ），第一转向系统的电动机软管（8,9）以及在第一转向系统（1）中发生故障而起作用的开关装置（25），并将转换阀（24）从 操作位置（A）到紧急位置（B）。 这样，也可以在第一转向系统的故障时进行方向盘的操作的转向操作，但是仅需要较小的转矩。

公开(公告)号：WO1997025559A1

公开(公告)日：1997-07-17

申请号：PCT/DK1996000540

申请日：1996-12-18

Applicant: DANFOSS A/S ,  FRIEDRICHSEN, Welm ,  MABIT, Xavier

Inventor： DANFOSS A/S

IPC: F16K01/44

CPC classification number: F16K17/0466 ,  F16K17/196 ,  F16K25/005

Abstract: A valve (10) is specified, having a closing member (2), co-operating with a valve seat (11), said closing member (2) and said valve seat (11) each having in their contact area a closing surface (16, 17), which bear against each other in the closed state. With such a valve the improvement of the tightness must also be possible, even with a simple construction. For this purpose one of the closing surfaces (16, 17) is coated with a coating material (18), which is softer than the material of the other closing surface.

Abstract translation: 具有闭合部件（2）的阀（10）与阀座（11）配合，所述关闭部件（2）和所述阀座（11）各自具有接触区域的闭合表面（ 16,17），在封闭状态下相互抵触。 使用这种阀门，即使采用简单的结构，也可以提高密封性。 为此目的，一个闭合表面（16,17）涂覆有比另一个封闭表面的材料软的涂层材料（18）。

公开(公告)号：WO1997020145A1

公开(公告)日：1997-06-05

申请号：PCT/DK1996000493

申请日：1996-11-26

Applicant: DANFOSS A/S ,  KLAUSEN, Jorn, Holger ,  JORGENSEN, Tage ,  MADSEN, Ingvard, Mosby ,  FROSLEV, Peter

Inventor： DANFOSS A/S

IPC: F04C02/10

CPC classification number: F04C15/0026 ,  F16J15/3208

Abstract: The invention concerns an axial sealing for pumps or motors, in which a medium is pumped into a chamber (7), limited by a first side wall (5) and a second side wall (6). The medium is pumped by a rotating element (9), preferably a pump wheel driven by a rotatable shaft (2). Due to the use of new pump media having a lower viscosity than previously used pump media, and due to the detrimental corrosive effect of these pump media, among others on the rotatable shaft, it is necessary to provide new sealings. The axial sealing according to the invention comprises a sealing element (19) extending around the rotatable shaft (2). In the radial direction the sealing element (19) is arranged between the rotatable shaft (2) and an inlet (12) and/or an outlet (13). The axial sealing according to the invention is able to maintain sufficient pressures in the chamber at high speeds of the rotating element, under which pumps and motors for the new pump media are working. The axial sealing according to the invention is also able to maintain the sealing in case of a leak of pump medium between the side walls (5, 6) and the rotating element (9), and is also able to maintain the sealing during a standstill of the pump.

Abstract translation: 本发明涉及用于泵或电动机的轴向密封，其中介质被泵入由第一侧壁（5）和第二侧壁（6）限定的室（7）中。 介质由旋转元件（9）泵送，优选地由可旋转轴（2）驱动的泵轮泵送。 由于使用具有比先前使用的泵介质更低的粘度的新型泵介质，并且由于这些泵介质在旋转轴上的不利腐蚀作用，因此需要提供新的密封。 根据本发明的轴向密封包括围绕可旋转轴（2）延伸的密封元件（19）。 在径向方向上，密封元件（19）设置在可旋转轴（2）和入口（12）和/或出口（13）之间。 根据本发明的轴向密封能够在旋转元件的高速度下在腔室中保持足够的压力，在该泵上和新的泵介质的马达上工作。 根据本发明的轴向密封还能够在侧壁（5,6）和旋转元件（9）之间的泵介质泄漏的情况下保持密封，并且还能够在静止期间保持密封 的泵。

公开(公告)号：WO1997017579A1

公开(公告)日：1997-05-15

申请号：PCT/DK1996000462

申请日：1996-11-07

Applicant: DANFOSS A/S ,  STEFANSSON, Thorvardur, Skuli ,  LOH, Uwe ,  ESPENSEN, Jorgen

Inventor： DANFOSS A/S

IPC: F25B41/04

CPC classification number: F25B41/067 ,  F25B41/04

Abstract: A compressor operated refrigeration plant is equipped with a self-acting diaphragm valve (7), which blocks the condenser (5) in the standstill periods of the compressor. The valve (7) has a temperature sensor (23) in thermal contact with the suction pipe of the compressor. During the operation of the compressor the temperature sensor (23) is cooled, as the suction pipe is cooled by the cold refrigerant gas from the evaporator flowing through said suction pipe. During standstill of the compressor the temperature sensor is heated by radiated heat from the compressor and by the heat led back into the suction pipe from the compressor. The valve (7) is actuated by the pressure difference arising between the temperature sensor and the condenser due to the alternating cooling and heating of the temperature sensor. The valve is a diaphragm valve in which the diaphragm serves as valve plate. The valve seat is a lilp of elastic material on a valve seat element. The valve seat element has a second lip of elastic material, which surrounds a through-hole in the body and lies sealingly against the valve housing around an outlet opening. The lifting height of the valve plate can be adjusted by displacing the valve seat element, whereby the second lip is compressed more or less strongly.

Abstract translation: 压缩机运行的制冷设备配备有自动隔膜阀（7），其在压缩机的停滞时段内阻塞冷凝器（5）。 阀（7）具有与压缩机的吸入管热接触的温度传感器（23）。 在压缩机的操作期间，由于吸入管被来自蒸发器的冷制冷剂气体冷却，所以温度传感器（23）被冷却。 在压缩机停止期间，温度传感器通过来自压缩机的辐射热量加热，并将热量从压缩机引回到吸入管中。 由于温度传感器的交替冷却和加热，阀（7）由温度传感器和冷凝器之间产生的压差驱动。 阀是隔膜阀，隔膜用作阀板。 阀座是阀座上的弹性材料。 阀座元件具有弹性材料的第二唇缘，其围绕主体中的通孔并围绕出口开口密封地靠在阀壳体上。 可以通过使阀座元件移位来调节阀板的提升高度，由此第二唇缘或多或少地被压缩。

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。