Pump valve device

Abstract

The invention relates to a pump valve arrangement in a common housing, comprising: a pump having a pump impeller for generating a pump flow; a valve for at least partially opening and / or closing at least two pressure outlets leading out from the common housing and supplied with a flow medium from the at least one common inlet; and an intermediate actuation valve member arranged between the housing and the pump impeller and assigned to the pressure outlet such that the intermediate actuation valve member can at least partially open / close the pressure outlet wherein the intermediate actuation valve member comprises a first operating state in which it is stationary with respect to the pump impeller to create a pump flow and a second operating state in which it is stationary with respect to the pump impeller to create a pump flow. In the second operating state, the valve rotates with the pump wheel opposite to the rotation direction of the pump wheel so as to force the valve to move in an actuating mode.

Description

[0001] The present invention relates to a pump-valve device, which includes a pump for generating a fluid flow, in particular a fluid flow of a motor vehicle, and a valve for regulating the fluid flow.

[0002] In order to regulate the fluid flow in a fluid circuit, it is known to use a valve member cooperating with a valve seat. In this case, the flow cross-section of the pipeline through which the fluid flows is assigned to the valve seat. In order to at least partially open or close the flow cross-section, the valve member can be positioned within the pipeline. Electromagnetic drives with electric motors are increasingly used for positioning the valve member. The electromagnetic drive of the valve member typically has a rotor connected to the valve member via a coupling element (such as an actuating rod). In this case, the electromagnetic drive can be arranged outside the housing of the valve, which requires complex sealing in the housing opening area and results in high energy consumption. This is particularly related to the fact that high frictional forces caused by the seal between the actuating rod and the housing opening must be overcome.

[0003] To solve these problems, it is known in the prior art to arrange the electric drive of the valve within the housing, or to use the electromagnetic drive of the pump connected to the valve as the drive for the valve member. DE 102017 208 134A1 discloses such a pump-valve device, in which the valve member is driven by the motor of the pump to position the valve member. However, it has been found that the solution in DE 10 2017 208134 A1 has the disadvantage that in order to move the valve member, complex construction within the pump-valve device is required. The latter includes different components, which may each wear and / or be damaged separately in each case. In addition, the additional components increase the assembly complexity and cost of the pump-valve device.

[0004] The object of the present invention is to overcome the disadvantages of the known prior art, and in particular to provide a pump-valve device with a simpler structure and high cost-effectiveness.

[0005] This object is achieved by the subject matter of claim 1.

[0006] Accordingly, a pump-valve device including a pump and a valve is provided in a common housing. The pump-valve device according to the present invention can be used, for example, in a motor vehicle engine department and / or a motor vehicle battery department of a motor vehicle, especially an electrically operated motor vehicle, for its thermal management, that is, for example, for distributing, mixing, cutting off, etc. a fluid flow (such as a coolant flow).

[0007] The pump-valve device in the common housing comprises a pump having a pump impeller for generating a pump flow; a valve for at least partially opening and / or closing at least two pressure outlets which lead out of the common housing and are supplied with a flowing medium from at least one common inlet; and an intermediate actuating member which is arranged between the housing and the pump impeller and is assigned to the pressure outlets such that it can at least partially open / close the pressure outlets. The intermediate actuating valve member comprises a first operating state and a second operating state, in the first operating state it is stationary relative to the pump impeller to form the pump flow, and in the second operating state it rotates with the pump impeller against the direction of rotation of the pump impeller to force a valve actuating movement.

[0008] The pressure outlet and the common inlet of the pump-valve device can lead to the interior of a common housing or a valve space or a pump space defined or formed by the common housing. The fluid inlet connector and / or the fluid outlet connector for connection to a pipeline system can be connected to the inlet and / or the plurality of pressure outlets. Fluid can enter the common housing through the fluid inlet connector or the inlet, and the fluid can leave the common housing again through the fluid outlet connector. By means of a valve or an intermediate actuating valve member, each pressure outlet can in each case be at least partially opened and / or closed for this purpose. Partially opening and / or closing is understood here to mean that the pressure outlet can be fully opened, in other words, opened 100% or 100% of the flow rate, or can be fully closed, in other words, opened 0% or 0% of the flow rate is possible, but any intermediate position between 0% and 100% can also be set, in other words, the flow rate is between 0 and 100%. This enables a targeted response to the needs or requirements in thermal management. The pump impeller and the intermediate actuating valve member can be arranged inside the housing. The pump impeller can rotate to generate a pump impeller flow rate and move the process fluid by rotation. In the pump-valve device according to the invention, in a first operating state, the intermediate actuating valve member can guide the fluid flow or the pump flow generated by the pump with the help of the pump impeller from the common inlet to the desired pressure outlet. It is also conceivable that the fluid flow or the pump flow is split by the intermediate actuating valve member from the common inlet to two or more pressure outlets. In the first operating state, the pump impeller is driven and rotated by a pump drive or a pump motor, thereby generating a pump flow. The intermediate actuating valve member is stationary or stationary in the first operating state. This is to be understood as meaning that in the first operating state, the intermediate actuating valve member does not substantially move in the longitudinal direction of the valve device and does not rotate about the longitudinal axis of the pump-valve device or the axis of rotation of the pump impeller. In a second operating state of the intermediate actuating valve member, the pump flow or the fluid flow can be changed accordingly by the movement of the intermediate actuating valve member, and the fluid can be guided into one or more other pressure outlets. For this purpose, the intermediate actuating valve member can rotate about the axis of rotation until the intermediate actuating valve member reaches the desired valve position. The axis of rotation of the intermediate actuating valve member is in particular oriented coaxially with respect to the axis of rotation of the pump impeller. The axis of rotation of the intermediate actuating valve member and / or the pump impeller can define the longitudinal direction of the pump-valve device. Thus, in the second operating state, the intermediate actuating valve member rotates together with the pump impeller. In particular, the pump impeller and the intermediate actuating valve member can rotate at the same rotational speed. For this purpose, the pump impeller and the intermediate actuating valve member can in particular be arranged on a common shaft and / or can be connected to a common shaft. In particular, in the second operating state, the intermediate actuating valve member can be driven by a pump drive or a pump motor. Thus, in the pump-valve device according to the invention, the pump impeller rotates in the first and second operating states, while the intermediate actuating valve member only rotates in the second operating state and is stationary or stationary in the first operating state.

[0009] By accommodating the pump-valve device in a common housing or by accommodating the valve in the housing of the pump, a separate actuator (electric actuation motor) for an intermediate actuating valve member can be dispensed with. The pump-valve device can also be driven by the motor of the pump. This reduces the weight of additional components (actuators, motors, etc.) on the one hand and also saves the costs of these components on the other hand. Also, the electrical connection to a separate actuation motor can be dispensed with, which facilitates its integration into the overall system, such as a motor vehicle, on the assembly side and / or the software side. In particular, the actuation address of the unnecessary actuation motor can be dispensed with in the controller of the overall system. Furthermore, by integrating the valve into the housing of the pump, the installation space is optimized. The dimensions of the pump-valve device can be adjusted according to specific customer applications.

[0010] Alternatively, in the case of specific customer applications, the housing, i.e., the pump head, may already exist in its application, and as a result, the pump-valve device can be provided without a housing. In this case, the housing can be dispensed with almost completely.

[0011] The intermediate actuating valve member can have a base region and a circumferential wall in the radial and axial directions. At least one fluid passage opening can be formed in the radial circumferential wall, and this fluid passage opening transports the flowing medium into the pump through at least one inlet and transports it out of the pump through a valve outlet.

[0012] Advantageously, the intermediate actuating valve member is formed as a separate part and has a spiral geometry. In an exemplary refinement, the spiral geometry is formed as a fluid conduit and corresponds to a recess in the wall region of the circumferential wall of the intermediate actuating valve member. The recesses in the wall region can be rotated respectively to the openings of the pressure outlets to open and close the pressure outlets. In this case, when the recesses on the intermediate actuating valve member completely cover the openings, the pressure outlets can be fully opened, or when the recesses on the intermediate actuating valve member only partially cover the openings, the pressure openings can be only partially opened. When the recesses are rotated away from the openings or do not cover the openings, the corresponding pressure outlets are closed. The spiral geometry, in particular the fluid conduit, extends at least partially, that is, not completely circumferentially, on the inner side of the circumferential wall and forms a spiral profile. This means that the cross-section of the fluid conduit tapers from its opening (corresponding to the recess in the wall region) to its end region, thus forming a geometric spiral shape. Advantageously, the spiral geometry first ensures the geometry required to transport the flowing medium through the pump with sufficient efficiency. Secondly, the spiral shape acts as a valve piston (spiral piston). Due to these advantages, the spiral geometry is not integrated into the housing (pump head) but is formed in the intermediate actuating valve member.

[0013] In the improved example, the pump wheel is received in the intermediate actuating valve member. As a result, the existing installation space can be utilized particularly well, especially by nesting the pump wheel and the intermediate actuating valve member one inside the other to reduce the longitudinal length of the pump valve device. In addition, the advantage of the pump wheel is that the fluid can be directly conveyed to the inlet of the fluid geometry, which, when viewed longitudinally, can be arranged at the same height as the pump wheel.

[0014] Alternatively or additionally, the pump wheel and the intermediate actuating valve member are arranged on a common shaft in the housing. Since the intermediate actuating valve member does not require a second shaft, the existing installation space can also be utilized particularly well by the arrangement on the common shaft. The receiving space for the pump wheel can be formed by the base region and the circumferential wall of the intermediate actuating valve member.

[0015] Furthermore, it is advantageous that the intermediate actuating valve member, especially together with the received pump wheel, is connected to the common shaft by a freewheel. A container for the shaft and the freewheel can be formed in the center of the base region of the intermediate actuating valve member. The intermediate actuating valve member and the pump wheel can be operated, adjusted, or moved independently of each other by the freewheel. Both operating states of the intermediate actuating valve member can be achieved in a structurally simple manner by the freewheel, where the freewheel allows movement in one rotational direction and prevents rotation against the rotational direction. For example, the freewheel can be made of plastic. In particular, the freewheel can be composed of a plastic material specifically suitable for water glycol applications or resistant to water glycol. For example, the plastic material can be adjusted to have low water absorption.

[0016] The freewheel is advantageously formed as a bearing. This saves separate components since the freewheel can be used as a bearing. The freewheel is preferably formed as a sliding bearing and has a sleeve shape. However, any bearing known to those skilled in the art can be used as the freewheel.

[0017] In another embodiment, the freewheel can rotate in the direction of rotation of the pump wheel and prevent rotation against the direction of rotation of the pump wheel. In other words, the freewheel can only rotate in the direction of rotation of the pump wheel. This allows the pump wheel to operate freely in the "normal" pump wheel rotation direction while the intermediate actuating valve member does not rotate. Then, the pump wheel and the intermediate actuating valve member rotate simultaneously.

[0018] It can be arranged that the pump flow into at least one pressure outlet is controlled by the position of the intermediate actuating valve member. As a result, targeted actuation of the selected pressure outlet can be achieved.

[0019] Furthermore, it is advantageous that at least two pressure outlets are arranged radially on the common housing. As a result, no axially arranged pressure outlets are formed on the housing. In the case of a customer application without a housing, at least two pressure outlets are formed in the customer housing.

[0020] In an exemplary improvement example, at least two pressure outlets are arranged tangentially to the interior of the housing. In particular, the pressure outlets are also formed tangentially to the housing or the radial outer side of the housing. In this way, particularly low pressure losses and effective flow guidance can be achieved.

[0021] In the improvement example, corresponding sealing elements are arranged in the common housing at each pressure outlet. The sealing elements are preferably formed as elastomers or from suitable materials known to those skilled in the art for sealing. A thin layer of PTFE (Teflon) can be applied, in particular vulcanized, to the elastomer. Through the PTFE layer, improved sliding performance between the intermediate actuating valve member and the sealing element can be achieved. In addition, the PTFE layer can reduce the torque required for the rotation of the intermediate actuating valve member and / or improve the durability of the sealing element.

[0022] In another embodiment, the sealing element has a circumferential sealing profile on the side facing the intermediate actuating valve member. The sealing profile can be formed, for example, as a crimp, a sealing lip, or other sealing shapes. The profile of the sealing profile can be adapted to the opening in the wall of the intermediate actuating valve member and / or completely surround the latter. In this way, it can be ensured that the entire fluid flow can be guided to the desired pressure outlet without leakage or pressure loss.

[0023] Preferably, the position of the intermediate actuating valve member is switched by the pump motor. Instead of a separate actuator for switching the valve position, the motor for operating the pump is also used for the intermediate actuating valve member. In other words, in the second operating state, the intermediate actuating valve member can be connected to the pump motor and / or the common shaft in a force-transmitting manner to allow the intermediate actuating valve member to rotate to actuate the intermediate actuating valve member. In this way, a separate actuator and a separate shaft for the intermediate actuating valve member can be omitted, thus saving installation space, weight, and / or cost. At the same time, due to the reduction in the number of components, the assembly of the pump valve device according to the present invention is faster and less error-prone.

[0024] In an exemplary improvement example, the pump motor operates at a torque in the range between 0.4 and 0.6 Nm and / or at a rotational speed in the range from 20 to 50 rpm to allow adjustment of the intermediate actuating valve member. In this range, it is possible to reliably adjust the intermediate actuating valve member at a low rotational speed and a high torque. In addition, due to the low rotational speed, particularly precise positioning of the intermediate actuating valve member is possible. In contrast, in order to rotate the pump impeller, the pump motor can operate at a significantly higher rotational speed range, particularly at a rotational speed in the range from 5000 to 7000 rpm, to generate a pump flow or to convey fluid through the pump valve device.

[0025] In another embodiment, the current operating state of the intermediate actuating valve member is determined by at least one Hall sensor. In this case, the Hall sensor can be attached to a printed circuit board, or can be attached to the intermediate actuating valve member and connected to the printed circuit board. However, the Hall sensor can also be arranged at another point in the pump valve device or in the pump, which is obvious to those skilled in the art and can be technically implemented. Another position sensor system known to those skilled in the art is also possible. In order to actuate the intermediate actuating valve member, for example, the coil of the pump motor can be energized, thereby rotating the intermediate actuating valve member in the opposite direction of rotation of the pump wheel until the Hall sensor indicates the desired switch position. Subsequently, by reversing the energization, the pump wheel can be driven in the direction of rotation of the pump wheel to generate a pump flow.

[0026] Furthermore, it can also be provided that the intermediate actuated valve member is operatively connected to a gear mechanism, preferably a planetary gear mechanism. This can have a drive wheel arranged coaxially with respect to the pump shaft, which drives a plurality of epicyclic gears, which in turn drive a ring gear. The ring gear can in particular be connected to the intermediate actuated valve member.

[0027] Alternatively, the intermediate actuated valve member can also be functionally operated without a gear mechanism. This simplifies the modular construction, production and sealing concept of the pump-valve arrangement.

[0028] According to the invention, a pump comprises a rotor mounted on a shaft and a stator arranged around the rotor. Such a pump can be used in a pump-valve device according to the above aspects of the invention and / or according to the aforementioned exemplary and preferred embodiments. The shaft of the pump can in particular be a common shaft of the pump-valve device.

[0029] In an exemplary embodiment, the intermediate actuated valve member has a particularly circumferential wall and a base extending particularly perpendicular to the wall. The base may particularly abut one end of the wall so that the wall and the base are arranged perpendicular to each other in cross section. The wall of the intermediate actuated valve member may be formed circumferentially only in the region, in other words, may be interrupted circumferentially at one or more points. The advantage provided by a completely circumferential wall is that the wall and the intermediate actuated valve member are more stable, but holes or openings must be formed at one or more points of the circumferential wall to ensure the delivery of the fluid. The base of the intermediate actuated valve member may particularly have a constant wall thickness.

[0030] In an exemplary improvement, the base of the intermediate actuating valve member is arranged longitudinally between the pump wheel and the drive of the pump wheel in the pump valve device. Then, the wall of the intermediate actuating valve member can extend particularly away from the drive of the pump wheel. In this way, the drive can be sealed relative to the pump wheel or the pump flow. If the common inlet of the pump valve device is arranged longitudinally relative to the drive device of the pump wheel, this arrangement of the base or this orientation of the intermediate actuating valve member also results in an increase in the efficiency of the pump valve device, because the incoming process fluid directly impacts the pump wheel without having to flow through the base of the intermediate actuating valve member. In this way, turbulence in the process fluid can be prevented. In addition, the flow path of the process fluid can be optimized and pressure losses can be reduced.

[0031] In another exemplary embodiment, the intermediate actuating valve member, in particular the wall of the intermediate actuating valve member, is arranged radially between the housing and the pump wheel perpendicular to the longitudinal direction of the pump valve device. In other words, the pump wheel is arranged within the circumferential wall of the intermediate actuating valve member, so that the installation space existing within the common housing can be utilized particularly effectively.

[0032] In an exemplary improvement, the intermediate actuating valve member is arranged longitudinally between 50% and 150%, in particular between 60% and 130%, between 70% and 110%, between 80% and 90% or in the range of approximately 84% of the longitudinal extent of the pump wheel between the housing and the pump wheel. In other words, at least half of the longitudinal extent of the pump wheel is received within the intermediate valve member, because the wall of the intermediate actuating valve member is arranged over at least half of the longitudinal extent of the pump wheel between the pump wheel and the common housing. It can also be arranged such that the pump wheel is completely received within the intermediate actuating valve member, or the wall of the intermediate actuating valve member extends longitudinally even beyond the pump wheel.

[0033] According to an exemplary embodiment, the pump wheel has a particularly conical recess on the side facing the pump drive for receiving the mounting member, in particular the free wheel, of the intermediate actuating valve member. In other words, in the central region around the common axis, the intermediate actuating valve member or the inner region of the intermediate actuating valve member can be arranged within the recess of the pump wheel and thus within the pump wheel. In other words, the pump wheel extends around the support point of the intermediate actuating valve member, at which additional material can be provided on the intermediate actuating valve. By further nesting, the existing installation space can be utilized more effectively.

[0034] According to another exemplary embodiment, the pump wheel is connected to the common shaft in a rotationally fixed manner. In particular, the pump wheel is connected to the common shaft in a form-fitting manner and / or by a press fit. In this way, it is ensured in a cost-effective manner that the pump wheel can rotate reliably in the pump wheel rotation direction to generate a pump flow and also rotate together with the intermediate actuating valve member against the pump wheel rotation direction.

[0035] In another exemplary embodiment, in a first operating state, the intermediate actuating valve member is connected to the common shaft in a manner that allows free rotation relative to the common shaft and / or in a force-transmitting manner in a second operating state. In particular, the intermediate actuating valve member can also rotate freely relative to the pump impeller, especially in the first operating state. Thus, in the first operating state, the intermediate actuating valve member remains stationary or is held stationary during the rotation of the common shaft and does not rotate with the common shaft, so that the pump flow can be directed to the desired pressure outlet. In the second operating state, the intermediate actuating valve member rotates with the common shaft through a force-transmitting connection and thus with the pump impeller, so that the position of the intermediate actuating valve member can be changed.

[0036] According to another exemplary embodiment, the common inlet is arranged on the end side of the housing, in particular coaxially with the common shaft. In this way, the fluid impinges centrally on the pump impeller, so that a particularly uniform and efficient pump flow can be generated.

[0037] In an exemplary embodiment, corresponding sealing elements are arranged between the intermediate actuating valve member and the common housing at at least one pressure outlet, in particular at all pressure outlets.

[0038] In another exemplary embodiment, the current operating state of the intermediate actuating valve member is determined by at least one optical sensor. In this case, the at least one optical sensor can be used as an alternative or supplement to at least one Hall sensor.

[0039] Preferred embodiments are specified in the dependent claims.

[0040] Other features, characteristics, and advantages of the present invention will become clear from the following description of the preferred embodiments of the present invention with reference to the accompanying drawings, in which:

[0041] Figure 1 A decomposition view of an exemplary embodiment of a pump valve device according to the present invention is shown;

[0042] Figure 2 A perspective view of an exemplary embodiment of an intermediate actuating valve member according to the present invention is shown; and

[0043] Figure 3 A cross-sectional view of an exemplary embodiment of a pump valve device according to the present invention is shown.

[0044] In the following description of an exemplary embodiment of a pump valve device according to the present invention with reference to the accompanying drawings, the pump valve device according to the present invention is generally denoted by the reference numeral 1.

[0045] The pump valve device 1 according to the invention is used, for example, in the thermal management of a motor vehicle and serves to distribute, mix, cut off and / or regulate fluid flow. In this case, the pump valve device 1 according to the invention comprises the following main components: a pump 3 for generating a pump flow and a valve 5 having an intermediate actuating valve member 7, the valve serving to open and / or close at least two pressure outlets 9 of the pump valve device 1.

[0046] Figure 1 A decomposition view of an exemplary embodiment of the pump valve device 1 according to the invention is shown. The pump valve device 1 is arranged in a common housing 11 and comprises a pump 3 having an impeller 13 for generating a pump flow and a valve 5 for at least partially opening and / or closing at least two pressure outlets 9. The pump valve device 1 also comprises an intermediate actuating valve member 7 which is assigned to the pressure outlets 9 such that it can at least partially open and / or close the pressure outlets 9, wherein the intermediate actuating valve member 13 has a first operating state and a second operating state, in the first operating state, it is stationary relative to the impeller 13 to form a pump flow, and in the second operating state, it rotates with the impeller 13 against the impeller rotation direction to force a valve actuating movement. The intermediate actuating valve member 7 is formed as a separate component. The impeller 13 is received in the intermediate actuating valve member 7 and both are arranged on a common shaft 19 in the housing 11, and the intermediate actuating valve member 7 is connected to the common shaft 19 via a freewheel 21. The freewheel 21 is formed as a bearing. At least two pressure outlets 9 are arranged radially on the housing 11. Corresponding sealing elements 23 are arranged in the common housing 11 at the respective pressure outlets 9, in particular at all pressure outlets 9. The sealing element 23 has a circumferential sealing profile 25 on the side facing the intermediate actuating valve member 7. The position of the intermediate actuating valve member 7 is switched via a pump motor 27.

[0047] In Figure 1 the embodiment, the housing 11 has a circumferential wall 12, four pressure outlets 9 being arranged radially relative to the common housing 11 on this circumferential wall, wherein the pressure outlets 9 are arranged equidistantly from one another in the circumferential direction. A common pressure inlet 17 is formed centrally at the end side 15 of the housing 11, this common pressure inlet extending along the longitudinal axis L of the pump valve device 1 and being arranged coaxially relative to the common shaft 19 (see in particular Figure 3)。The fluid flow or pump flow enters the interior of the housing 11 through the inlet 17 and thus enters the interior of the pump valve device 1. The pressure inlet 17 and the pressure outlet 9 are formed as hollow cylindrical pipe sections. The contour of the sealing element 23, in particular the contour of the sealing contour 25, is adapted to the shape of the opening 26 of the pressure outlet 9 and completely surrounds the opening 26. In order to fasten the sealing element 23 in the housing 11, corresponding rib-shaped fastening protrusions 28 extending in the longitudinal direction L are formed on both sides of each opening 26 on the inner side of the circumferential housing wall 12 of each pressure outlet 9. The corresponding sealing element 23 can be pushed between the fastening protrusions 28, or the corresponding sealing element 23 can be fastened to the fastening protrusions 28.

[0048] In addition, the housing 11 has a plurality of radial protrusions 29 on the outer side of the circumferential wall 12. These radial protrusions 29 are also evenly distributed in the circumferential direction and are respectively arranged between two pressure outlets 9. Corresponding connecting flanges 33 are formed on the housing 31 of the pump motor 27. Then, the common housing 11 of the pump 3 and the valve 5 can be screwed to the motor housing 31, for example, by screws (not shown). However, it is also conceivable that the common housing 11 and the motor housing 31 are connected to each other in a different way. In addition, electrical connection points 35 are formed on the motor housing 31 so that power can be supplied to the pump motor 27 and it can be actuated.

[0049] Figure 2 A perspective view of the intermediate actuating valve member 7 is shown. The intermediate actuating valve member 7 is formed as a separate component and has a spiral geometry generally denoted by the reference numeral 37. The spiral geometry 37 is formed as a fluid conduit 39 and corresponds to a recess 41 in the wall region 43 of the intermediate actuating valve member 7 (see Figure 3 )。The fluid conduit 39 extends at least partially on the inner side of the circumferential wall 43, that is, not completely in the circumferential direction, and forms a spiral contour. This means that the cross-section of the fluid conduit tapers from its opening corresponding to the recess 41 in the wall region 43 until its end region, thus forming a geometric spiral shape. Advantageously, the spiral geometry 37 first ensures the geometry required to convey the flowing medium through the pump 3 with sufficient efficiency. Secondly, the spiral shape acts as a valve piston (spiral piston). Due to these advantages, the spiral geometry 37 is not integrated in the housing (pump head) as is usually the case in the prior art, but is formed in the intermediate actuating valve member 7. The intermediate actuating valve member 7 also has a base 45 in which a plurality of openings 47 are formed through which pressure equalization can be achieved between the drive space of the pump motor 27 and the interior 51 of the housing.

[0050] The pump impeller 13 is received in the intermediate actuating valve member 7, which will be referred to later with reference to Figure 3A more detailed explanation will be given here. The receiving space 57 is formed by the base region 45 and the circumferential wall 43 of the intermediate actuating valve member 7, and the pump impeller 13 is received in this receiving space 57. A socket 53 for the shaft 19 and the freewheel 21 is formed at the center of the base region 45 of the intermediate actuating valve member 7. The intermediate actuating valve member 7 and the pump impeller 13 can be operated or adjusted or moved independently of each other through the freewheel 21.

[0051] Figure 3 An exemplary embodiment of the pump valve device 1 according to the present invention is shown in a sectional view. The flowing fluid enters the housing 11 of the pump valve device 1 through the inlet 17, and the inlet 17 is Figure 3 represented by an arrow with the reference numeral 49 in the drawing. The flowing fluid enters the interior of the housing or the valve space or the pump space defined by the housing 11 and represented by the reference numeral 51 through the inlet 17. Depending on the position of the intermediate actuating valve member 7, the flowing fluid then leaves the housing 11 through one or more pressure outlets 9, thereby leaving the pump valve device 1 again. In Figure 1 the embodiment of Figure 3 and Figure 3 the pressure outlets 9 are respectively tangent to the interior of the housing 51. In Figure 3 the intermediate actuating valve member 7 rotates such that Figure 3 the left pressure outlet 9a in

[0052] is completely closed and the right pressure outlet 9b is opened. As a result, the flowing medium leaves the pump valve device 1 again through the pressure outlet 9b, as shown by the arrow with the reference numeral 50 inIt can also be seen in the sectional view that the intermediate actuating valve member 7 is connected to the common shaft 19 via the freewheel 21. In this case, the common shaft 19 is driven by the pump motor 27, which is shown in a simplified manner in the sectional view. To receive the freewheel 21, a bearing projection 53 in the form of a circumferential wall is formed in the center of the intermediate actuating valve member 7, and the bearing projection extends from the base 45 of the intermediate actuating valve member 7 in the same direction as the wall 43 of the intermediate actuating valve member 7. The freewheel 21 or the sleeve of the freewheel 21 is received in the bearing projection 53 and is connected to the intermediate actuating valve member 7 in a force-transmitting manner. The freewheel 21 can have a structure known in principle from the prior art. The outer running ring of the freewheel 21 is formed by the sleeve of the freewheel, and the inner running ring is formed by the common shaft 19. The freewheel sleeve and the common shaft 19 are connected by a spring-prestressed clamping body 54. Due to the geometric configuration of the clamping body 54, the clamping body slides on the common shaft 19 in the direction of rotation of the pump wheel. As a result, when the shaft 19 rotates in the direction of rotation of the pump wheel, the shaft 19 can rotate freely relative to the intermediate actuating valve member 7. During the rotation of the common shaft 19 against the direction of rotation of the pump wheel, the clamping body 54 is set by a slight rotation, and thus a clamping action is generated between the common shaft 19 and the freewheel sleeve. As a result, the intermediate actuating valve member 7 is connected to the common shaft 19 in a force-transmitting manner and rotates with the shaft 19 during the rotation of the shaft 19 against the direction of rotation of the pump wheel. The pump wheel 13 is connected to the common shaft 19 in a rotationally fixed manner via the injection sleeve 55 and thus rotates with the shaft 19 during the rotation in the direction of rotation of the pump wheel and during the rotation against the direction of rotation of the pump wheel. As a result, both operating states of the intermediate actuating valve member 7 can be achieved in a simple manner.

[0053] The pump wheel 13 for generating the pump flow is arranged inside the housing 51. The intermediate actuating valve member 7 for regulating the pump flow is also located inside the housing 51. In order to be able to better utilize the installation space present inside the housing 51, according to the invention, the intermediate actuating valve member 7 and the pump wheel 13 are nested one inside the other in the pump valve device 1.

[0054] First, the circumferential wall 43 of the intermediate actuating valve member 7 is arranged radially R between the housing 11 and the pump wheel 13, and the radial R is perpendicular to the longitudinal direction L of the pump valve device 1. Here, the base 45 of the intermediate actuating valve member 7 is arranged in the longitudinal direction L between the pump wheel 13 and the pump motor 27, and the wall 43 of the intermediate actuating valve member 7 extends from the base 45 in the direction of the pump wheel 13 or in the direction of the inlet 17. In this way, the pump driver 27 can be sealed relative to the pump wheel 13 or the pump flow. In addition, in Figure 3In the embodiment, such an arrangement of the base 45 results in an increased efficiency of the pump valve device 1 because the inflowing process fluid directly impacts the pump impeller 13 without having to flow through the base 45 of the intermediate actuating valve member 7. In this way, turbulence in the process fluid can be prevented. Furthermore, the flow path of the process fluid can be optimized and pressure losses can be reduced.

[0055] On the other hand, the pump impeller 13 has a conical recess 57 in the center, and the bearing projection 53 of the intermediate actuating valve member 7 is received in this conical recess. As a result, the pump impeller 13 and the intermediate actuating valve member 7 can be further nested one inside the other, or a larger part of the longitudinal extent of the pump impeller 13 is received in the intermediate actuating valve member 7, and the existing installation space can be better utilized.

[0056] The features disclosed in the above description, the drawings, and the claims, whether individually or in any desired combination, are important for implementing the present invention in various configurations.

[0057] List of reference numerals

[0058] 1 Pump valve device

[0059] 3 Pump

[0060] 5 Valve

[0061] 7 Intermediate actuating valve member

[0062] 9, 9a, 9b Pressure outlet

[0063] 11 Housing

[0064] 12 Housing wall

[0065] 13 Pump impeller

[0066] 15 Housing end face

[0067] 17 Common inlet

[0068] 19 Common shaft

[0069] 21 Freewheel

[0070] 23 Sealing element

[0071] 25 Sealing profile

[0072] 26 Opening

[0073] 27 Pump motor

[0074] 28 Fastening projection

[0075] 29 Radial projection

[0076] 31 Motor housing

[0077] 33 Fastening flange

[0078] 35 Electrical connection point

[0079] 37 Spiral geometry

[0080] 39 Fluid pipeline

[0081] 41 Recess

[0082] 43 Wall

[0083] 45 Base

[0084] 47 Opening

[0085] 49 Inlet flow

[0086] 50 Outlet flow

[0087] 51 Inside of the housing

[0088] 53 Bearing projection

[0089] 54 Clamping body

[0090] 55 Sleeve

[0091] 57 Receiving space

[0092] L Longitudinal

[0093] R Radial

Claims

1. A pump-valve device (1) in a common housing (11), comprising a pump (3) having a pump wheel (13) for generating a pump flow; - a valve (5) for at least partially opening and / or closing at least two pressure outlets (9) which lead out of the common housing (11) and are supplied with flow medium from at least one common inlet (17); and an intermediate actuating valve member (7) which is arranged between the housing (11) and the pump wheel (13) and is assigned to the pressure outlet (9) such that it can at least partially open / close the pressure outlet, wherein The intermediate actuating valve member (7) comprises a first operating state and a second operating state, in which the intermediate actuating valve member (7) is stationary relative to the pump wheel (13) to form a pump flow, and in which the intermediate actuating valve member (7) rotates together with the pump wheel (13) in the opposite direction of rotation of the pump wheel to force the valve actuating movement.

2. The pump-valve device (1) according to claim 1, wherein: The intermediate actuated valve member (7) is formed as a separate component and has a helical geometry (37).

3. The pump-valve device (1) according to claim 2, wherein: The spiral geometry (37) is formed as a fluid conduit (39) and corresponds to a recess (41) in a wall region (43) of the intermediate actuated valve member (7).

4. The pump-valve device (1) according to claim 1, 2 or 3, wherein: The pump wheel (13) is received in the intermediate actuated valve member (7).

5. The pump-valve device (1) according to any one of the preceding claims, wherein: The pump wheel (13) and the intermediate actuated valve member (7) are arranged on a common shaft (19) in the housing (11).

6. The pump-valve device (1) according to claim 5, wherein: The intermediate actuating valve member (7), in particular together with the received pump wheel (13), is connected to the common shaft (19) via a free wheel (21).

7. The pump-valve device (1) according to claim 6, wherein: The freewheel (21) is designed as a bearing, in particular as a plain bearing bushing.

8. The pump-valve device (1) according to claim 6 or 7, wherein: The freewheel (21) is rotatable in the direction of rotation of the pump wheel and prevents a rotation opposite to the direction of rotation of the pump wheel.

9. The pump-valve device (1) according to any one of the preceding claims, wherein: The pump flow into at least one pressure outlet (9) is controlled by the position of the intermediate actuated valve member (7).

10. The pump-valve device (1) according to any one of the preceding claims, wherein: The at least two pressure outlets (9) are arranged radially on the common housing (11).

11. The pump-valve device (1) according to claim 10, wherein: The at least two pressure outlets (9) are arranged tangentially to the housing interior (51).

12. The pump-valve device (1) according to any one of the preceding claims, wherein: The respective sealing element (23) is arranged in the common housing (11) at the respective pressure outlet (9), in particular at all pressure outlets (9).

13. The pump-valve device (1) according to claim 12, wherein: The sealing element (23) has a circumferential sealing contour (25) on the side facing the intermediate actuated valve member (7).

14. The pump-valve device (1) according to any one of the preceding claims, wherein: The position of the intermediate actuated valve member (7) is switched via a pump motor (27).

15. The pump-valve device (1) according to claim 14, wherein: The pump motor (27) is operated with a torque in the range between 0.4 and 0.6 Nm and / or with a rotational speed in the range from 20 to 50 rpm in order to be able to adjust the intermediate actuated valve member.

16. The pump-valve device (1) according to any one of the preceding claims, wherein: The current operating state of the intermediate actuated valve member (7) is determined by means of at least one Hall sensor.

17. The pump-valve device (1) according to any one of the preceding claims, wherein: The intermediate actuated valve member (7) is operatively connected to a gear mechanism, preferably a planetary gear mechanism.

18. The pump-valve device (1) according to any one of the preceding claims, wherein: The intermediate actuated valve member (7) has an in particular circumferential wall (43) and a base (45) extending in particular perpendicularly to the wall (43).

19. The pump-valve device (1) according to claim 18, wherein: The base portion (45) of the intermediate actuated valve member (7) is arranged between the pump wheel (13) and a driver (27) of the pump wheel (13) in the longitudinal direction (L) of the pump-valve device (1).

20. The pump-valve device (1) according to any one of the preceding claims, wherein: The intermediate actuating valve member (7), in particular the wall (43) of the intermediate actuating valve member, is arranged between the housing (11) and the pump wheel (13) along a radial direction (R) perpendicular to the longitudinal direction (L) of the pump-valve device (1).

21. The pump-valve device (1) according to claim 20, wherein: The intermediate actuated valve member (7) is arranged in the longitudinal direction (L) between the housing (11) and the pump wheel (13) within a range of 50% to 150% of the longitudinal extent of the pump wheel (13).

22. The pump-valve device (1) according to any one of the preceding claims, wherein: The pump wheel (13) has, on the side facing the pump drive (27), a recess (55), in particular a conical recess, for receiving a mounting of the intermediate actuating valve member (7), in particular the freewheel (21).

23. The pump-valve device (1) according to any one of claims 4 to 22, wherein: The pump wheel (13) is connected to the common shaft (19) in a rotationally fixed manner, in particular in a form-fitting manner and / or by a press fit.

24. The pump-valve device (1) according to any one of claims 4 to 23, wherein: The intermediate actuated valve member (7) is freely rotatable relative to the common shaft (19) in the first operating state and / or is connected to the common shaft (19) in a force-transmitting manner in the second operating state.

25. The pump-valve device (1) according to any one of the preceding claims, wherein: The common inlet (17) is arranged on an end side of the housing (11), in particular coaxially with respect to the common axis (19).

26. The pump-valve device (1) according to any one of the preceding claims, wherein: A respective sealing element (23) is arranged between the intermediate actuating valve member (7) and the common housing (11) at at least one pressure outlet (9), in particular at all pressure outlets (9).

27. The pump-valve device (1) according to any one of the preceding claims, wherein: The current operating state of the intermediate actuated valve member (7) is determined by means of at least one optical sensor.

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