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EP-4735780-A1 - THROTTLE VALVE DEVICE, FUEL-CELL SYSTEM AND VEHICLE

EP4735780A1EP 4735780 A1EP4735780 A1EP 4735780A1EP-4735780-A1

Abstract

The invention relates to a throttle valve device (3a) comprising a throttle valve actuator, a throttle valve channel middle section (4a), and a first and second throttle valve channel end section (4b, 4c), wherein the throttle valve actuator comprises a throttle valve (5). In a plane, perpendicular to an axis (6) about which the throttle valve (5) can be adjusted, a recess geometry (10a) of the first throttle valve channel end section (4b) is formed extending along an adjustment region of the throttle valve (5). The invention also relates to a fuel-cell system (2) and to a vehicle (1) having such a throttle valve device (3a).

Inventors

  • Drienovsky, Mihai
  • POPA, ALEXANDRU

Assignees

  • Schaeffler Technologies AG & Co. KG

Dates

Publication Date
20260506
Application Date
20240624

Claims (17)

  1. 1. Throttle valve device (3a) with a throttle valve actuator, a throttle valve channel middle section (4a), and a first and second throttle valve channel end section (4b, 4c), wherein the throttle valve actuator comprises a throttle valve (5), wherein the throttle valve (5) is adjustably arranged in the throttle valve channel middle section (4a) and a flow cross-section can be changed depending on the position of the throttle valve (5), wherein the flow cross-section is limited by the throttle valve (5) and a recess geometry (10a) of the first throttle valve channel end section (4b) and/or a recess geometry (10b) of the second throttle valve channel end section (4c), characterized in that in a plane perpendicular to an axis (6) about which the throttle valve (5) is adjustable, the recess geometry (10a) of the first throttle valve channel end section (4b) is designed to run along an adjustment range of the throttle valve (5) and/or the recess geometry (10b) of the second throttle valve channel end section (4c) is designed to run along an adjustment region (11) of the throttle valve (5).
  2. 2. Throttle valve device (3a) according to claim 1, characterized in that the adjustment region (11) comprises a first adjustment sub-region (11 a), that the recess geometry (10a) of the first throttle valve channel end section (4b) and/or the recess geometry (10b) of the second throttle valve channel end section (4c) is designed for the first adjustment sub-region (11 a) in such a way that the flow cross-section is constant or variable over the entire first adjustment range (11 a) when the throttle valve (5) is adjusted in the first adjustment sub-region (11 ).
  3. 3. Throttle valve device (3a) according to claim 2, characterized in that the adjustment region (11) comprises a second adjustment sub-region (11b), that the recess geometry (10a) of the first throttle valve channel end section (4b) and/or the recess geometry (10b) of the second throttle valve channel end section (4c) is designed for the second adjustment sub-region (11b) in such a way that the flow cross-section is variable over the entire second adjustment sub-region (11b) when the throttle valve (5) is adjusted in the second adjustment sub-region (11b).
  4. 4. Throttle valve device (3a) according to claim 3, characterized in that the flow cross-section in the second adjustment region (11 b) is more variable when the throttle valve (5) is adjusted than when the throttle valve is adjusted in the first adjustment region (11a).
  5. 5. Throttle valve device (3a) according to claim 3 or 4, characterized in that the first adjustment section (11a) is arranged between the second adjustment section (11b) and a closed position or minimum position.
  6. 6. Throttle valve device (3a) according to one of claims 3 to 5, characterized in that the recess geometry (10b) of the second throttle valve channel end section (4c) is designed for the second adjustment sub-area (11b) in such a way that the flow cross-section in the second adjustment sub-area (11b) increases with increasing distance of the position of the throttle valve (5) from the closed position, minimum position or the first adjustment sub-area.
  7. 7. Throttle valve device (3a) according to one of the preceding claims, characterized in that the recess geometry (10a) of the first throttle valve channel end section (4b) and/or the recess geometry (10b) of the second throttle valve channel end section (4c) is spherical.
  8. 8. Throttle valve device (3a) according to one of the preceding claims, characterized in that the first throttle valve channel end section (4b) and/or the second throttle valve channel end section (4c) is formed separately from the throttle valve actuator (5) and/or the throttle valve channel middle section (4a).
  9. 9. Throttle valve device (3a) according to one of the preceding claims, characterized in that the first throttle valve channel end section (4b) and/or the second throttle valve channel end section (4b) is detachably fastened to the throttle valve actuator and/or to the throttle valve channel middle section (4a).
  10. 10. Throttle valve device (3a) according to one of the preceding claims, characterized in that the throttle valve channel middle section (4a) comprises a receiving space (13) in which the throttle valve is arranged, and that the first throttle valve channel end section (4b) comprises a fluid channel (7a) which is fluidically connected to the receiving space, and/or the second throttle valve channel end section (4c) comprises a fluid channel (8a) which is fluidically connected to the receiving space (13).
  11. 11. Throttle valve device (3a) according to one of the preceding claims, characterized in that the receiving space (13) is arranged fluidically between the fluid channel (7a) of the first throttle valve channel end section (4b) and the fluid channel (8a) of the second throttle valve channel end section (4c).
  12. 12. Throttle valve device (3a) according to one of the preceding claims, characterized in that a first vector (7b) which runs through the center of gravity of the flow cross section of the fluid channel (7a) of the first throttle valve channel end section (4b), and/or that a second vector (8b) which runs through the center of gravity of the flow cross section of the fluid channel (8a) of the second throttle valve channel end section (4c).
  13. 13. Throttle valve device (3a) according to one of the preceding claims, characterized in that the throttle valve (5) is cut by the first vector (7b) at a first location, which is arranged at a distance from a further location at which the throttle valve (5) is cut by the second vector (8b).
  14. 14. Throttle valve device (3a) according to one of the preceding claims, characterized in that the throttle valve (5) moves away from the first throttle valve channel end section (4b) at a first point at which it is intersected by the first vector (7b) when the throttle valve (5) is adjusted from the closed position or the minimum position in the direction of the first adjustment sub-region (11a) or from the first adjustment sub-region (11a) in the direction of the second adjustment sub-region (11b).
  15. 15. Throttle valve device (3a) according to one of the preceding claims, characterized in that the throttle valve (5) moves away from the second throttle valve channel end section (4c) at a second point at which it is intersected by the second vector (8b) when the throttle valve (5) is adjusted from the closed position or the minimum position in the direction of the first adjustment sub-range (11a) or from the first adjustment range (11a) in the direction of the second adjustment range (11b).
  16. 16. Fuel cell system (2) with at least one throttle valve device (3a) according to one of the preceding claims.
  17. 17. Vehicle (1) with a fuel cell system (2) according to claim 16 and/or at least one throttle valve device (3a) according to one of claims 1 to 15.

Description

Description throttle valve device, fuel cell system and vehicle technical field The invention relates to a throttle valve device, a fuel cell system with such a throttle valve device and a vehicle with such a throttle valve device or such a fuel cell system. State of the art Throttle valve actuators are known from the state of the art that are designed exclusively for their respective field of application. A particular disadvantage of the prior art devices is that new designs of throttle valve actuators are necessary if a different application is intended. Description of the invention, task, solution, advantages Therefore, the object of the present invention is to create an alternative throttle valve device which is characterized in particular by its ease of manufacture, low manufacturing costs and/or its flexible use. A further object is to provide a fuel cell system with such a throttle valve device. A further object is to provide a vehicle with such a fuel cell system and/or such a throttle valve device. The object with regard to the throttle valve device is achieved by a throttle valve device having the features of claim 1. One aspect of the invention relates to a throttle valve device with a throttle valve actuator, a throttle valve channel middle section, and a first and second throttle valve channel end section, wherein the throttle valve actuator comprises a throttle valve, wherein the throttle valve is adjustably arranged in the throttle valve channel middle section and a flow cross-section can be changed depending on the position of the throttle valve, wherein the flow cross-section is limited by the throttle valve and a recess geometry of the first throttle valve channel end section and/or a recess geometry of the second throttle valve channel end section, wherein in a plane perpendicular to an axis about which the throttle valve is adjustable, the recess geometry of the first throttle valve channel end section is designed to run along an adjustment range of the throttle valve and/or the recess geometry of the second throttle valve channel end section is designed to run along an adjustment range of the throttle valve. This creates a throttle valve device which is particularly characterized by its ease of manufacture, low manufacturing costs and/or its flexible applicability. It is particularly advantageous if the throttle valve device is a throttle valve device for a fuel cell system. It is also advantageous if the throttle valve device is a throttle valve device for a fuel cell system of a vehicle, in particular a motor vehicle. It is also advantageous if the throttle valve channel middle section is formed as one piece with the throttle valve actuator. This eliminates the need for a separate assembly process, which further reduces manufacturing costs. It is also advantageous if the throttle valve has a circular or oval cross-section. The cross-section refers to a view perpendicular to the axis about which the throttle valve is adjustable and/or perpendicular to the extension surface of the throttle valve. It is also expedient if the throttle valve can be adjusted by means of an electric motor. The throttle valve actuator and/or throttle valve device preferably comprise this electric motor. The electric motor is advantageously coupled to the throttle valve in a drive-transmitting manner. Preferably, the position of the throttle valve is changeable due to its adjustability. In other words, the position of the throttle valve changes when the throttle valve is adjusted. This makes it possible to change the flow cross-section and in particular to adapt it to an operating point, preferably of a fuel cell system. Preferably, the axis about which the throttle valve is adjustable extends in a plane in which the throttle valve extends. Alternatively, the axis about which the throttle valve is adjustable penetrates a plane in which the throttle valve extends at an angle. Alternatively, the axis about which the throttle valve is adjustable runs parallel to and at a distance from a plane in which the throttle valve extends. Regardless of the direction of extension of the axis around which the throttle valve is adjustable, the axis is defined by a shaft to which the throttle valve is connected in a drive-transmitting manner. This means that a shaft extends in the direction of the axis. The connection can be materially bonded, positively bonded and/or force-fitted. In general, it is advantageous if the axis about which the throttle valve is adjustable is an adjustment axis, adjustment shaft or throttle valve adjustment axis, throttle valve adjustment shaft. It is particularly preferred if the adjustment range of the throttle valve means an adjustment movement course of the throttle valve. Furthermore, it is particularly preferred if the two recess geometries are opposite one another. The throttle valve is preferably arranged between the two recess geometries. In principle, it is preferred if the recess geom