• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a pump (1) having a pump housing (2) with a suction opening and with an outlet opening (3), with a drivable impeller (4) arranged in the pump housing (2), by means of which a fluid from the suction opening 0 to the outlet opening (3) is conveyed, wherein in the pump housing (2) a slide (7) is provided, which is displaceable in the axial direction, wherein the slide (7) radially outside the impeller (4) in the axial direction via the impeller (4) is displaceable, wherein the slide (7) of an actuator (8) by means of at least one axially displaceable push rod (9) is displaceable in the axial direction, wherein the axial position and / or the axial displacement of the at least one push rod (9) by a magnetorheological brake element (14) can be influenced.
    公开号:AT517131A2
    申请号:T86/2016
    申请日:2016-02-18
    公开日:2016-11-15
    发明作者:Thomas Geffert
    申请人:Porsche Ag；
    IPC主号:
    专利说明:

    pump
    The invention relates to a pump, in particular a water pump for a water cycle of a motor vehicle.
    Pumps and in particular water pumps are used in motor vehicles, for example, to supply the coolant circuit with a water flow in order to cool the motor vehicle engine and possibly also other units. In this case, water flows as a coolant through the drive motor and is heated there. Subsequently, the coolant flows through a coolant cooler, where it is cooled down again in the heat exchange, for example with air, before it is conveyed by the pump back to the drive motor.
    However, the required pump power of the pump is not always in the maximum range, but may also be reduced depending on the operating state of the motor vehicle. However, the pump power is particularly dependent on the drive. However, if the pump is driven by the drive motor itself, the speed of the pump is determined by the speed of the drive motor, but this does not have to correlate with the required pump power.
    Therefore, a controllable pump is basically desirable. However, very complex solutions are included
    Automotive applications rather unsuitable, because so are the costs always rise, which is often unacceptable in the automotive industry.
    It is the object of the present invention to provide a pump which is simple and inexpensive, yet allows good controllability.
    The object is achieved with the features of claim 1.
    An embodiment of the invention relates to a pump having a pump housing with a suction opening and with an outlet opening, with a pump housing arranged in the drivable impeller by means of which a fluid from the suction port to the outlet port is conveyed, wherein in the pump housing, a slide is provided which is displaceable in the axial direction, wherein the slide is displaceable radially outside of the impeller in the axial direction over the impeller, wherein the slide is displaceable by an actuator by means of at least one axially displaceable push rod in the axial direction, wherein the axial position and / or the axial displacement of the at least one push rod can be influenced by a magnetorheological brake element. With the slide, which is radially outwardly slidable over the impeller in the axial direction, the fluid flow of the pump can be adjusted or controlled. If the slide is fully retracted, the maximum flow can be promoted, the slide is fully extended, the volume flow to be funded can be completely prevented. If the slide is in an intermediate position between these two positions, then the volume flow to be delivered can be adjusted accordingly. For a simple and stable control of the volume flow is a simple displacement and secure positioning necessary. The provision of the at least one brake element serves to be able to hold the slide securely in a set position.
    According to the inventive concept, it is advantageous if a plurality of push rods is provided, and the push rods are actuated by the actuator and by means of which the slide is axially displaceable. This allows the introductory force to be better distributed.
    Thus, a number of push rods can be arranged distributed over the circumference of the slider to a uniform
    To cause stress on the slide, so that it does not tilt and jammed when pressurized the push rods. This increases the life of the pump.
    It is also particularly advantageous if each push rod is assigned a magnetorheological brake element. Thereby, the positioning of the push rod can be improved if the respective push rod can be adjusted in position and held accordingly. This improves the general positioning of the slide and thus the pumping accuracy of the pump.
    Furthermore, it is also advantageous if the magnetorheological brake element has a brake housing, in which a chamber is formed, through which the push rod is guided, wherein the chamber is filled with a magnetorheological material. Thereby, the positioning of the push rod can be achieved in a particularly simple manner.
    According to the inventive concept, it is also advantageous if at least one magnetic field generating element is provided to generate a magnetic field in the region of the magnetorheological material. In this case, the magnetic field generating element can generate a magnetic field for all brake elements together or alternatively, the magnetic field generating element can also be provided such that a plurality thereof is provided, which are each associated with a brake element. Thus, the magnetic field generating element can each be associated with the brake element and secured thereto.
    Preferably, a magnetic field generating element is an electromagnet or a coil, wherein the magnetic field generating element is arranged on and / or around the brake housing.
    It is also advantageous if within the brake housing a piston-like element is arranged, which is connected to the push rod, and which is movable by the magnetorheological material. This ensures that a good power transmission between the magnetorheological material and the push rod is achieved.
    It is particularly advantageous if the piston-like element is a flange protruding from the pressure rod in the radial direction. This allows a good power transmission can be achieved with a simple design. The flange can move in the brake housing along the direction of movement of the push rod and depending on the viscosity of the magnetorheological material results in a good braking or holding behavior.
    It is also advantageous if the brake housing has a hollow-cylindrical annular wall and two end walls spaced apart in the axial direction, wherein in the two end walls in each case an opening is formed through which passes through the push rod. This creates a kind of cylinder space in which the piston-like element can move like a piston. As a result, a simple configuration is achieved.
    It when the brake element is held with its annular wall in a receptacle in the housing of the pump is particularly advantageous. Thus, the brake element is held securely, so that a force on the push rod also directly on the slider is transferable.
    It is particularly advantageous if the actuator for actuating the at least one pressure rod is a hydraulic or pneumatic actuator which acts on an actuating element, such as a pressure ring, on which at least one pressure rod acts. As a result, a simple and cost-effective training and control with good power transmission can be achieved. In combination with the at least one brake element, a good controllability of the slider can be achieved.
    In the following the invention will be explained in detail by means of an embodiment with reference to the drawing. In the drawing show:
    1 shows a schematic perspective, partially cutaway view of an embodiment of a pump,
    Figure 2 is a sectional view of a part of
    Pump according to FIG. 1,
    Figure 3 is a perspective view of a portion of the pump of Figure 1, and
    Figure 4 is a sectional view of a braking element.
    FIG. 1 shows a pump 1 in a partially sectioned illustration. The pump 1 has a pump housing 2, which has a suction opening and an outlet opening 3. However, the suction port is not shown because the front housing cover of the pump housing for showing details of the pump is not shown.
    In the pump housing 2, a rotatable and drivable impeller 4 is arranged, which promotes a fluid from the suction port to the outlet port 3 upon rotation. For this purpose, the impeller 4 has a structure of vanes and / or profiles in order to be able to convey the fluid upon rotation of the impeller 4. In the embodiment of Figure 1, the impeller 4 promotes the fluid coming from an axial flow from the intake radially outward to there from the
    Outlet opening 3 to be discharged. Also, other geometries may be used, such as radial suction and axial discharge.
    The impeller 4 is arranged on a shaft 5 and rotatably supported with it in the pump housing 2. The shaft 5 protrudes out of the pump housing 2, where it is connected to a pulley 6 to be driven by a belt drive.
    For controlling the conveyed fluid flow in the pump housing 2, a slide 7 is provided, which is arranged displaceably in the axial direction. In this case, the slider 7 is received displaceably in the axial direction and arranged radially between the pump housing 2 and impeller 4. The slide 7 can be displaced between a first axial position and a second axial position. In this case, the slide 7 is arranged in the retracted position in the first position and it releases the impeller 4 radially outward. In the second position, the slide engages axially over the impeller 4 and covers this radially outside of the impeller 4 from. In the first position, the fluid flow, which is conveyed by the pump impeller 4, can be conveyed without being influenced by the slide 7. In the second position, the fluid flow is interrupted because the slide 7 blocks the fluid passage radially outside the impeller 4. Also, the slider can be adjusted in an axial intermediate position between the first position and the second position. Depending on the axial positioning of the slide 7 thereby the fluid flow of the pump 1 can be controlled.
    The slide 7 is displaceable radially outside the impeller 4 in the axial direction via the impeller 4. This is effected by means of an actuator 8. He stands actuator with at least one axially displaceable push rod 9 in connection, which is supported on the one hand on the actuator 8 and on the other hand on the slide 7. The actuator 8 can act on the at least one push rod 9 and move in the axial direction towards the impeller 4 or in the opposite direction away from the impeller. 4
    In this case, a single push rod 9 may be provided or it may also be provided a plurality of push rods 9, which are actuated by the actuator 8 and by means of which the slide 7 is axially displaceable.
    The actuator 8 is advantageously a hydraulic or pneumatic actuator which has a pressure chamber 10 with a final diaphragm cover 11 with a membrane 12 arranged therein. Coupled to the membrane 12 is a pressure ring 13, which acts on the respective pressure rods 9. If a pressure is applied to the pressure chamber 10, the pressure ring 13 is acted upon or displaced in the axial direction, which acts on the pressure rods 9 or displaced.
    In order to influence the positioning of the slide 7 connected to the push rods 9 or cooperating with these braking elements 14 are provided. These brake elements 14 are formed in the embodiment of Figure 1 as a magnetorheological brake elements 14. The magnetorheological brake element 14 is used to transmit power to the at least one push rod 9, so that it is controllable in its movement or speed. Thus, a force can be exerted by the brake element 14 on the push rod 9, which reduces the speed of movement of the push rod 9. Also, the force can be dimensioned such that the movement of the push rod 9 is prevented and the push rod 9 is held. Accordingly, the axial position and / or the axial displacement of the at least one push rod 9 can be influenced by the at least one magnetorheological brake element 14.
    FIG. 1 shows a plurality of push rods 9, which are distributed over the circumference of the slider 7. In the embodiment of FIG. 1, each push rod 9 is associated with a magnetorheological brake element 14.
    Figures 2 and 3 show this again in a more detailed representation. The push rods 9 are arranged distributed on the circumference of the slider 7. In the embodiment of Figures 1 to 3 three push rods 9 are provided, which are arranged at an angular distance of 120 ° and thus act evenly on the slider 7. The pressure rods are acted upon by the pressure ring 13, which in turn is acted upon by springs 23. Thus, the pressure ring 13 and the push rods 9 is displaced in the unbiased state of the springs 23 in the first position.
    FIG. 4 shows a magnetorheological brake element 14 in a cutaway view. The magnetorheological brake element 14 has a brake housing 15, in which a chamber 16 is formed, through which the push rod 9 is guided. The chamber 16 is filled with a magnetorheological material 17. The magnetorheological material 17 is formed either as a dry powder or as a fluid, wherein the material has the property that the elements of the material concatenate with an applied magnetic field and thus increases the viscosity of the magnetorheological material 17. If no magnetic field is applied, the chaining decreases or disappears and the viscosity of the material decreases.
    The brake housing 15 is formed by a hollow cylindrical annular wall 18 and two axially spaced end walls 19, so that the brake housing 15 is formed approximately barrel-like. In the two end walls 19 each have an opening 20 is formed through which the push rod 9 passes. In this case, a seal between the end wall 19 and the push rod 9 is provided or formed, so that substantially no magnetorheological material 17 can escape from the opening 20.
    FIG. 1 shows that the brake element 14 with its annular wall 18 is held in a receptacle in the pump housing 2 of the pump 1.
    Within the brake housing 15, a piston-like element 21 is arranged, which is connected to the push rod 9, and which is moved by the magnetorheological material 17. In this case, the piston-like element 21 is a projecting from the push rod 9 in the radial direction flange. This can be designed such that it has bores or recesses through which the magnetorheological material 17 can flow and / or it can also be configured such that a gap remains between the radially outer edge of the flange and the inner wall of the brake housing 15, so that the magnetorheological material 17 can flow through this gap when the push rod 9 moves. The flange or the piston-like element 21 divides the chamber 16 into two regions, wherein the magnetorheological material 17 flows over from one region to the other region during a movement of the pressure rod 9. Depending on the viscosity of the magnetorheological material 17, this can lead to a more or less strong braking or even holding the pressure rod 9.
    To generate a magnetic field in the region of the brake element 14 or the brake elements 14, at least one magnetic field generating element 22 is provided in order to generate a magnetic field in the region of the magnetorheological material 17. In this case, the magnetic field generating element 22 is advantageously designed as an electromagnet or as a coil. The magnetic field generating element 22 is advantageously arranged on the brake housing 15 and / or about the brake housing 15. Thus, each brake housing 15 may be assigned its own magnetic field generating element 22. Alternatively, a single magnetic field generating element 22 may also be assigned to several or all of the brake elements 14 or brake housings 15. This can advantageously be arranged around all brake elements 14, in particular optionally also around the pump housing 2.
    The magnetic field is advantageously controlled by a control unit, not shown, in order to determine the setting of the slider can.
    By the interaction of hydraulic or pneumatic actuator and at least one controlled braking element a good controllability of the positioning of the slider 7 is achieved.
    REFERENCE SIGNS LIST 1 Pump 2 Pump housing 3 Outlet opening 4 Impeller 5 Shaft 6 Pulley 7 Slide 8 Actuator 9 Push rod 10 Pressure chamber 11 Membrane cover 12 Diaphragm 13 Pressure ring 14 Brake element 15 Brake housing 16 Chamber 17 Magnetorheological material 18 Ring wall 19 End wall 20 Opening 21 Piston-like element 22 Magnet-field generating element 23 Spring
    权利要求:
    Claims (12)
    [1]
    A pump (1) having a pump housing (2) with a suction opening and with an outlet opening (3), with a driven pump wheel (4) arranged in the pump housing (2), by means of which a fluid from the suction opening to the outlet opening (3) is conveyable, wherein in the pump housing (2) a slide (7) is provided, which is displaceable in the axial direction, wherein the slide (7) radially outside the impeller (4) in the axial direction via the impeller (4) is displaceable, wherein the slide (7) by an actuator (8) by means of at least one axially displaceable push rod (9) in the axial direction is displaceable, characterized in that the axial position and / or the axial displacement of the at least one push rod (9) by a magnetorheological brake element (14) can be influenced.
    [2]
    2. Pump (1) according to claim 1, characterized in that a plurality of push rods (9) is provided which of the actuator (8) are actuated and by means of which the slide (7) is axially displaceable.
    [3]
    3. Pump (1) according to claim 2, characterized in that the plurality of push rods (9) over the circumference of the slide (7) are arranged distributed.
    [4]
    4. Pump (1) according to one of the preceding claims 2 or 3, characterized in that each push rod (9) is associated with a magnetorheological brake element (14).
    [5]
    5. Pump (1) according to claim 1 or 4, characterized in that the magnetorheological brake element (14) has a brake housing (15), in which a chamber (16) is formed, through which the push rod (9) is guided, wherein the chamber (16) is filled with a magnetorheological material (17).
    [6]
    6. Pump (1) according to claim 5, characterized in that at least one magnetic field generating element (22) is provided to generate a magnetic field in the region of the magnetorheological material (17).
    [7]
    7. Pump (1) according to any one of claims 4, 5 or 6, characterized in that the magnetic field generating element (22) is an electromagnet or a coil, which is arranged on and / or around the brake housing (15).
    [8]
    8th . Pump (1) according to one of claims 4, 5, 6 or 7, characterized in that within the brake housing (15) a piston-like element (21) is arranged, which is connected to the push rod (9), and which by the magnetorheological Material (17) is movable.
    [9]
    9. Pump (1) according to claim 8, characterized in that the piston-like element (21) is a projecting from the push rod (9) in the radial direction flange.
    [10]
    10. Pump (1) according to one of claims 4 to 9, characterized in that the brake housing (15) has a hollow cylindrical annular wall (18) and two spaced-apart in the axial direction end walls (19), wherein in the two end walls (19) respectively an opening (20) is formed through which the push rod (9) passes.
    [11]
    11. Pump (1) according to one of claims 4 to 10, characterized in that the braking element (14) is held with its annular wall (18) in a receptacle in the pump housing (2).
    [12]
    12. Pump (1) according to any one of the preceding claims, characterized in that the actuator (8) for actuating the at least one push rod (9) is a hydraulic or pneumatic actuator, which via an actuating element, such as a pressure ring (13), acts on the at least one push rod (9).
    类似技术:
    公开号 | 公开日 | 专利标题
    DE4200305A1|1993-07-15|ADJUSTABLE WING CELL PUMP IN A COMPACT DESIGN
    DE1947641B2|1973-11-15|Machine designed as a pump or motor with variable displacement
    DE102013224657A1|2015-06-03|Hydraulic arrangement
    EP3371465B1|2019-11-27|Coolant pump for an internal combustion engine
    EP3371463B1|2019-11-27|Control arrangement for a mechanically controllable coolant pump of an internal combustion engine
    DE102015106671A1|2016-11-03|pump
    AT517131A2|2016-11-15|pump
    DE102006061854A1|2008-06-26|Fluid motor with improved braking effect
    DE2342605C3|1980-06-26|Pumps, in particular circulation pumps for heating systems
    EP3119596B1|2021-08-18|Device for sealing and inflating inflatable articles
    DE102015106673A1|2016-11-03|fluid control dial
    EP3412944A1|2018-12-12|Control valve
    DE3343520C2|1986-06-19|Vane compressor with variable flow rate
    DE102013113354A1|2015-06-03|Valve
    EP1674752A1|2006-06-28|Viscous fluid clutch
    EP2961988B1|2020-10-07|Screw pump with at least two parts
    DE102015107543A1|2016-11-17|DISPLACEMENT PUMP, METHOD FOR OPERATING A DISPLACEMENT PUMP AND STEERING SYSTEM
    DE2542392A1|1977-03-31|Hydraulically operated high pressure membrane pump - has automatically operated change over valve for alternately driving one or other membrane
    DE102013113356A1|2015-06-03|Valve
    DE102018202716A1|2019-08-22|Axial piston machine with a rotatable control disk seat
    DE102019101404A1|2020-07-23|Hydraulic camshaft adjuster
    DE102007050972A1|2009-04-30|Gas-operated rotary vane motor i.e. compressed air motor, for seat-belt tightener, has control valve movable into open position for defining maximum exhaust cross section by pressure developed in starting phase against counteracting force
    DE102014201877A1|2015-08-20|Filter element for baffle openings of a switchable coolant pump
    AT517584B1|2017-03-15|VANE PUMP
    DE202019107043U1|2021-03-18|Hydraulic adjustment unit for SCT
    同族专利:
    公开号 | 公开日
    AT517131A3|2018-03-15|
    ITUA20162930A1|2017-10-27|
    DE102015106669A1|2016-11-03|
    AT517131B1|2021-11-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6561141B2|2001-01-19|2003-05-13|Borg Warner, Inc.|Water-cooled magnetorheological fluid controlled combination fan drive and water pump|
    US7322895B2|2005-11-23|2008-01-29|Gm Global Technology Operations, Inc.|Automotive accessory drive system|
    US7296543B2|2006-04-06|2007-11-20|Gm Global Technology Operations, Inc.|Engine coolant pump drive system and apparatus for a vehicle|
    DE102010050597B4|2010-11-05|2013-01-10|Seuffer Gmbh & Co.Kg|Controllable damping device|
    US20120211318A1|2011-02-17|2012-08-23|GM Global Technology Operations LLC|Real-Time Variable Damping Module Using Magnetic Shape Memory Material|
    DE102011076719A1|2011-05-30|2012-12-06|Schaeffler Technologies AG & Co. KG|Supply unit for supplying cooling water to combustion engine, has coolant pump acting upon cooling circuit with coolant, and actuator with servomotor that is connected with rack-and-pinion drive for adjusting push rod and guide plate|
    US8651070B2|2012-07-09|2014-02-18|Behr America, Inc.|Method and apparatus to control coolant flow through an engine, especially for a motor vehicle|
    DE102013113356A1|2013-12-03|2015-06-03|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Valve|
    DE102013113357A1|2013-12-03|2015-06-03|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Valve|
    DE102014009367B3|2014-06-21|2015-03-05|Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt|Adjustable coolant pump|EP3431768A1|2017-07-17|2019-01-23|Airtex Products, S.A.|Adjustable coolant pump|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015106669.6A|DE102015106669A1|2015-04-29|2015-04-29|pump|
    [返回顶部]