Fluid valve

1 . A fluid valve, comprising:

a housing having:

a first valve port opening; and

a second valve port opening;

an actuator having a first lateral cylindrical surface comprising:

a first actuator opening in the first lateral surface;

a second actuator opening in the first lateral surface; and

at least one through-passage between the first actuator opening and the second actuator opening; and

a cavity defined in the housing having a second cylindrical lateral surface directly facing the first lateral surface in which the actuator is moveably accommodated in a movable manner, the cavity comprising:

a first inflow opening defined in the second cylindrical lateral surface and spaced apart from the first valve port opening; and

a first outflow opening defined in the second cylindrical lateral surface and spaced apart from the second valve port opening;

in a first actuator position, the first actuator opening is situated opposite the first inflow opening and the second actuator opening is situated opposite the first outflow opening, and

in a second actuator position, the first actuator opening is not situated opposite the first inflow opening and/or the second actuator opening is not situated opposite the first outflow opening;

wherein:

a cross-sectional area of the first actuator opening is greater than a cross-sectional area of the first inflow opening, and

a cross-sectional area of the first outflow opening is greater than a cross-sectional area of the second actuator opening.

2 . The fluid valve as claimed in claim 1 ,

wherein the cavity has a second outflow opening;

wherein,

in the first actuator position, one of the first and the second actuator openings is situated opposite one of the first and a second inflow opening and the other of the first and the second actuator openings is situated opposite the other of the first and the second outflow openings; and

in at the second actuator position, the one of the first and the second actuator openings is not situated opposite the one of the first and the second inflow opening and the other of the first and the second actuator openings is not situated opposite the other of the first and the second outflow openings; and

wherein at least one of:

a cross-sectional area of a respective actuator opening is greater than a cross-sectional area of a respective inflow opening, and

a cross-sectional area of the second outflow opening is greater than the cross-sectional area of a respective actuator opening.

3 . The fluid valve as claimed in claim 1 ,

wherein the cavity has a second inflow opening;

wherein:

in a third actuator position, one of the first and second actuator openings is situated opposite the second inflow opening and the other of the first and second actuator openings is situated opposite one of the first and a second outflow opening; and

in a fourth actuator position, the one of the first and second actuator opening is not situated opposite the second inflow opening and/or the other of the first and second actuator opening is not situated opposite the first and second outflow opening; and

wherein:

a cross-sectional area of the second actuator opening is greater than a cross-sectional area of the second inflow opening, and

a cross-sectional area of a respective outflow opening is greater than the cross-sectional area of a respective other actuator opening.

4 . The fluid valve as claimed in claim 1 ,

wherein the actuator has a second through-passage with a third actuator opening and with a fourth actuator opening;

wherein

in the first actuator position, the third actuator opening is situated opposite a respective inflow opening and the fourth actuator opening is situated opposite a respective outflow opening, and

in the second actuator position, the third actuator opening is not situated opposite the respective inflow opening and/or the fourth actuator opening is not situated opposite this outflow opening; and

wherein:

a cross-sectional area of the third actuator opening is greater than a cross-sectional area of the respective inflow opening, and

a cross-sectional area of a respective outflow opening is greater than a cross-sectional area of the fourth actuator opening.

5 . The fluid valve as claimed in claim 4 , wherein at least one of:

the cross-sectional area of at least one actuator opening of at least one through-passage of the actuator that, in the first actuator position, is situated opposite an inflow opening is greater than the cross-sectional area of this inflow opening; and

the cross-sectional area of at least one actuator opening of at least one through-passage of the actuator that, in the first actuator position, is situated opposite a respective outflow opening is less than the cross-sectional area of the respective outflow opening.

6 . The fluid valve as claimed in claim 4 , wherein at least one of:

the cross-sectional area of each, actuator opening of each through-passage of the actuator that, in the first actuator position, is situated opposite an inflow opening is greater than the cross-sectional area of this inflow opening; and

the cross-sectional area of each, actuator opening of each through-passage of the actuator that, in at the first actuator position, is situated opposite a respective outflow opening is less than the cross-sectional area of the respective outflow opening.

7 . The fluid valve as claimed in claim 1 , further comprising:

a contact seal-free gap is arranged between one or more of:

the first and/or a second inflow opening and the first and/or a second outflow opening and/or

the first and/or second inflow opening and/or between the first and/or the second outflow opening.

8 . The fluid valve as claimed in claim 1 , wherein,

for a first pairing of a respective actuator opening and a respective inflow or outflow opening opposite which this actuator opening is situated in an actuator position, a difference between the cross-sectional area of this actuator opening and the cross-sectional area of this inflow or outflow opening has a first difference value, and a flow resistance between this inflow or outflow opening and a valve port opening adjacent thereto has a first resistance value; and

for at least one other pairing of an actuator opening and an inflow or outflow opening opposite which this actuator opening is situated in an actuator position, a difference between the cross-sectional area of this actuator opening and the cross-sectional area of this inflow or outflow opening has a different difference value, which is greater than the first difference value, and a flow resistance between this inflow or outflow opening and a valve port opening adjacent thereto has a different resistance value, which is greater than the first resistance value.

9 . The fluid valve as claimed in claim 1 , wherein the cross-sectional area of the first outflow opening is greater than a cross-sectional area of the second valve port opening.

10 . The fluid valve as claimed in claim 9 , wherein the cross-sectional area of the first inflow opening is equal to a cross-sectional area of the first valve port opening.

11 . A fluid system, configured as a temperature-control system, having at least one fluid valve comprising:

a housing having:

a first valve port opening; and

a second valve port opening;

an actuator having a first lateral cylindrical surface comprising:

a first actuator opening in the first lateral surface;

a second actuator opening in the first lateral surface; and

at least one through-passage between the first actuator opening and the second actuator opening;

a cavity defined in the housing having a second cylindrical lateral surface directly facing the first lateral surface in which the actuator is moveably accommodated in a movable manner, the cavity comprising:

a first inflow opening defined in the second cylindrical lateral surface and spaced apart from the first valve port opening; and

a first outflow opening defined in the second cylindrical lateral surface and spaced apart from the second valve port opening;

in a first actuator position, the first actuator opening is situated opposite the first inflow opening and the second actuator opening is situated opposite the first outflow opening, and

in a second actuator position, the first actuator opening is not situated opposite the first inflow opening and/or the second actuator opening is not situated opposite the first outflow opening;

wherein:

a cross-sectional area of the first actuator opening is greater than a cross-sectional area of the first inflow opening, and

a cross-sectional area of the first outflow opening is greater than a cross-sectional area of the second actuator opening.

12 . A motor vehicle comprising:

a fluid system having at least one fluid valve comprising:

a housing having:

a first valve port opening; and

a second valve port opening;

an actuator having a first lateral cylindrical surface comprising:

a first actuator opening in the first lateral surface;

a second actuator opening in the first lateral surface; and

at least one through-passage between the first actuator opening and the second actuator opening; and

a cavity defined in the housing having a second cylindrical lateral surface directly facing the first lateral surface in which the actuator is moveably accommodated in a movable manner, the cavity comprising:

a first inflow opening defined in the second cylindrical lateral surface and spaced apart from the first valve port opening; and

a first outflow opening defined in the second cylindrical lateral surface and spaced apart from the second valve port opening;

in a first actuator position, the first actuator opening is situated opposite the first inflow opening and the second actuator opening is situated opposite the first outflow opening, and

in a second actuator position, the first actuator opening is not situated opposite the first inflow opening and/or the second actuator opening is not situated opposite the first outflow opening;

wherein:

a cross-sectional area of the first actuator opening is greater than a cross-sectional area of the first inflow opening, and

a cross-sectional area of the first outflow opening is greater than a cross-sectional area of the second actuator opening.

13 . A method for operating a fluid valve, having:

a housing having:

a first valve port opening; and

a second valve port opening;

an actuator having a first lateral cylindrical surface comprising:

a first actuator opening in the first lateral surface;

a second actuator opening in the first lateral surface; and

at least one through-passage between the first actuator opening and the second actuator opening; and

a cavity defined in the housing having a second cylindrical lateral surface directly facing the first lateral surface in which the actuator is moveably accommodated in a movable manner, the cavity comprising:

a first inflow opening defined in the second cylindrical lateral surface and spaced apart from the first valve port opening; and

a first outflow opening defined in the second cylindrical lateral surface and spaced apart from the second valve port opening;

in a first actuator position, the first actuator opening is situated opposite the first inflow opening and the second actuator opening is situated opposite the first outflow opening, and

in a second actuator position, the first actuator opening is not situated opposite the first inflow opening and/or the second actuator opening is not situated opposite the first outflow opening;

wherein:

a cross-sectional area of the first actuator opening is greater than a cross-sectional area of the first inflow opening, and

a cross-sectional area of the first outflow opening is greater than a cross-sectional area of the second actuator opening,

the method comprising:

situating the first actuator opening opposite the first inflow opening;

situating the second actuator opening opposite the first outflow opening; and

fluid flows from the first inflow opening into the first actuator opening and from the second actuator opening into the first outflow opening.