CN-121993629-A - Rotary disk valve

Abstract

Rotary disk valves are used in fluid delivery systems to control fluid flow between fluid lines connecting system elements. The valve includes a valve body that supports a fixed disk and receives a flow splitter having a movable disk. The flow splitter is configured to rotate about an axis of rotation relative to the valve body and cooperate with the fixed disk to control fluid flow through the valve body. The stationary and movable disks have through openings that provide fluid flow through the valve according to a fluid flow-diverter position curve or set of curves.

Inventors

• C. Franklin
• D. Tutante
• J.Jin
• P. Mason

Assignees

• 罗伯特·博世有限公司

Dates

Publication Date

20260508

Application Date

20251107

Priority Date

20241107

Claims (19)

1. 1. A valve, comprising: a valve body including an inlet port and an outlet port, and A flow diverter rotatably disposed in the valve body, the flow diverter configured to control flow through the valve body such that fluid flows through the first outlet port according to a flow-diverter position profile, Wherein the rate of fluid flow through the valve body is adjustable at a first resolution for the position of the diverter in a first range of positions and at a second resolution for the position of the diverter in a second range of positions, and The second resolution is coarser than the first resolution.
2. 2. The valve of claim 1, wherein, The second position range does not overlap the first position range, and Each position within the second range of positions corresponds to a greater diverter position value than each position within the first range of positions.
3. 3. A valve, comprising: a valve body including an inlet port, a first outlet port, and a second outlet port; a fixed disk disposed in the valve body and fixed relative to the valve body, and A flow splitter rotatably disposed in the valve body, the flow splitter comprising a movable disk parallel to the fixed disk and configured to rotate relative to the fixed disk about an axis of rotation, the flow splitter cooperating with the fixed disk to control fluid flow from the inlet port to at least one of the first outlet port and the second outlet port such that: Fluid flows through the first outlet port according to a first flow-diverter position curve having a first curve portion and a second curve portion adjacent the first curve portion, the first curve portion having a first linear slope and the second curve portion having a second linear slope, wherein the second linear slope has an absolute value greater than an absolute value of the first linear slope, and Fluid flows through the second outlet port according to a second flow-diverter position curve, and the second flow-diverter position curve is a mirror image of the first flow-diverter position curve relative to a predetermined flow.
4. 4. A valve according to claim 3, wherein the predetermined flow rate intersects the second curvilinear portion of the first flow-diverter position curve.
5. 5. The valve of claim 3, wherein, The second curve portion does not overlap the first curve portion, The fluid flow through the first outlet port is such that the flow rate for each diverter position of the second curve portion is less than the flow rate for each diverter position of the first curve portion, and The fluid flow through the second outlet port is such that the flow rate is greater for each diverter position of the second curve portion than for each diverter position of the first curve portion.
6. 6. The valve of claim 3, wherein the second curvilinear portion of the first flow-diverter position curve intersects the second curvilinear portion of the second flow-diverter position curve.
7. 7. A valve according to claim 3, wherein the second curvilinear portion of the first flow-diverter position curve intersects the second curvilinear portion of the second flow-diverter position curve at a diverter position in the range of 85% to 95% of the full diverter position range.
8. 8. A valve according to claim 3, wherein the predetermined flow rate is in the range 8 (litres/minute) to 12 (litres/minute).
9. 9. A valve according to claim 3, wherein the first flow-diverter position curve has a maximum flow for diverter positions in the range of 0% to 10% of a full diverter position range.
10. 10. The valve of claim 3, wherein the valve body comprises a valve seat and a cover, wherein, The valve seat extends in a plane and includes a periphery surrounded by an upstanding edge, an The cover comprises a cylindrical side wall and a cover plate portion closing one end of the side wall, The valve seat and the cover cooperate in a fluid-tight manner to define a valve cavity configured to receive the flow splitter and in fluid communication with the inlet port, the first outlet port, and the second outlet port.
11. 11. The valve of claim 10, wherein each of the inlet port, the first outlet port, and the second outlet port are formed in the valve seat.
12. 12. The valve of claim 10, wherein, The flow splitter includes a drive and the movable disk, and The movable disk is disposed on a valve seat facing surface of the driver and is configured to be driven for rotation by the driver.
13. 13. The valve of claim 10, wherein, The diverter includes a drive and the movable disk, The movable disk is compressed between a surface of the driver facing the valve seat and a surface of the fixed disk facing the cover plate portion, and The movable disk is driven to rotate by the driver.
14. 14. The valve of claim 13, wherein, The actuator having a disk-shaped foot disposed in the valve chamber and a valve stem protruding from a surface of the foot facing the cover plate portion, The valve stem is configured to extend through an opening in the cover plate portion and mechanically couple with an actuator, The valve stem has a centerline coincident with the axis of rotation, and The flow diverter is configured to control fluid flow through the valve body based on rotational orientation of the actuator relative to the valve body.
15. 15. The valve of claim 14, wherein the foot comprises a plurality of foot through openings.
16. 16. The valve of claim 14, wherein a surface of the foot facing the cover plate portion includes a protrusion configured to engage with a stop element of the cover to limit a degree of rotation of the driver relative to the valve body.
17. 17. The valve of claim 10, wherein, The fixed disk is supported on the valve seat and fixed relative to the valve seat, A sealing element disposed between the fixed disk and the valve seat, the sealing element providing a fluid-tight seal between the fixed disk and the valve seat, and The surface of the stationary disk facing the cover plate portion faces and abuts the surface of the flow diverter facing the valve seat.
18. 18. A valve, comprising: a valve body, the valve body comprising The first end of the first tube is provided with a first opening, The second end of the first tube is provided with a second tube, A cylindrical sidewall extending between the first end and the second end, the first end, the second end and the sidewall collectively defining a valve cavity, An inlet port in communication with the valve chamber, A first outlet port in communication with the valve chamber, an A second outlet port in communication with the valve chamber; A fixed disk fixed relative to the valve body and separating the valve cavity into a first cavity portion and a second cavity portion, the fixed disk including a fixed disk opening, and A diverter rotatably disposed in the first chamber portion, the diverter including a movable disk adjacent to and rotatable relative to the fixed disk, the movable disk including a movable disk opening, Wherein the fixed disk opening and the movable disk opening are configured such that the valve controls fluid flow through the valve body characterized by: Fluid flows through the first outlet port according to a first flow-diverter position curve having a first curve portion and a second curve portion adjacent the first curve portion, the first curve portion having a first linear slope and the second curve portion having a second linear slope, wherein the absolute value of the second linear slope is greater than the absolute value of the first linear slope, and Fluid flows through the second outlet port according to a second flow-diverter position curve, and the second flow-diverter position curve is a mirror image of the first flow-diverter position curve relative to a predetermined flow.
19. 19. The valve of claim 18, wherein each of the inlet port, the first outlet port, and the second outlet port is in communication with the second chamber.

Description

Rotary disk valve Background Rotary valves are one type of directional control valve that may be used in fluid delivery systems to control the flow and distribution of fluid through the system. For example, rotary valves may be used to control the flow of coolant through a vehicle coolant control system. The rotary valve may include a valve body defining a fluid port and a flow divider disposed in the valve body. The diverter is shaped to distribute flow to predetermined fluid ports for certain rotational orientations of the diverter within the valve body and the diverter rotates relative to the valve body to control flow through the valve. In some conventional rotary disk valves, one or more disks are disposed in the valve body. The disks move relative to each other and cooperate to block flow or direct all or part of flow to one or more ports in the valve body. In some applications, it may be desirable for a rotary disk valve to control fluid flow with specific flow characteristics. Disclosure of Invention A thermal management system for an electric vehicle may include a coolant control system having a disc-type rotary fluid valve that may be used by the thermal management system to direct coolant, for example, to cool a drive motor, charge heat exchanger, battery, power electronics module, vehicle passenger compartment, and/or other vehicle components or systems requiring temperature control. For purposes of operation and packaging efficiency, it may be useful to combine multiple components of the vehicle thermal management system into a single integrated module. Such modules may include the coolant control system, a refrigerant control system, or both. The coolant control system may include, for example, one or more circulation pumps, a fluid reservoir, one or more fluid valves, a coolant control system controller, sensors, a heat exchanger, and the like. The housing of the module may include internal flow channels that allow fluid communication between the various components of the system included in the module. Portions of the module housing may be configured to replace housing elements of certain assemblies. For example, a portion of the module may be used to provide a cover for a fluid valve and/or a fluid valve assembly, whereby the fluid valve assembly is connected to the module housing. For other components, the module may be configured to allow the component to be "plugged into" a suitably configured portion of the module housing. Such complex fluid delivery systems may require a rotary valve capable of controlling fluid flow between two, three, four or more separate ports of the valve body. For example, multiport rotary disk valves may be used in coolant control systems for electric vehicles to control the flow of coolant fluid between a radiator, an electric drive motor, a battery, vehicle electronics, and/or one or more bypass lines. Further, such valves may be required to output fluid having specific flow characteristics from one or more of the ports. The rotary disk valve may include a valve body (e.g., a valve housing) that provides a valve cavity, the valve body including an inlet port, a first outlet port, and a second outlet port, each of the inlet port, the first outlet port, and the second outlet port opening into the valve cavity. The valve may include a fixed disk disposed in the valve chamber and fixed relative to the valve body. The valve may include a flow divider disposed in the valve chamber. The diverter includes a movable disk that is parallel to and abuts the fixed disk. The flow splitter is configured to rotate about an axis of rotation relative to both the valve body and the fixed disk. The orientation of the diverter including the movable disk relative to the stationary disk about the axis of rotation provides control of fluid flow from the inlet port to the first and second outlet ports. Further, each of the movable and stationary plates includes a through opening shaped and sized to output fluid having a particular flow characteristic from one or more of the ports. For example, in the illustrated embodiment, fluid flow from the inlet to either the first outlet or the second outlet is controlled to allow fine control of fluid flow volume over one range of valve opening amounts and coarse control of fluid flow volume over another range of valve opening amounts. In particular, the valve controls fluid flow such that fluid flows through the first outlet port according to a first flow-diverter position curve having a first curve portion and a second curve portion adjacent the first curve portion. The first curve portion has a first slope that is linear. The second curve portion has a second slope, the second slope being linear. The absolute value of the second linear slope is greater than the absolute value of the first linear slope. In addition, fluid flows through the second outlet port according to a second flow-diverter position curve. The second flow-diverter position c