Cleaning system for vehicle sensor
A cleaning system includes an actuator and an arm rotatable by the actuator. The actuator includes a housing and a rotatable barrier in the housing defining a first chamber and a second chamber. The rotatable barrier is rotatable by relative pressures of the chambers. The arm includes a first nozzle fluidly connected to the first chamber and a second nozzle fluidly connected to the second chamber.
1. A cleaning system, comprising:
an actuator including a housing and a rotatable barrier in the housing defining a first chamber and a second chamber, the rotatable barrier rotatable by relative pressures of the chambers; and
an arm rotatable by the actuator and including a first nozzle fluidly connected to the first chamber and a second nozzle fluidly connected to the second chamber.
2. The cleaning system of claim 1 , wherein the arm includes a wiper blade.
3. The cleaning system of claim 2 , wherein the first and second nozzles are positioned to emit fluid on respective first and second sides of the wiper blade.
4. The cleaning system of claim 1 , wherein the housing includes a cylindrical outer wall, the actuator includes a central shaft, and the rotatable barrier extends from the central shaft to the outer wall.
5. The cleaning system of claim 4 , wherein the actuator includes a fixed barrier extending from the central shaft to the outer wall.
6. The cleaning system of claim 5 , wherein the rotatable barrier is rotatable about an axis defined by the central shaft from a first position through a rotational sweep of at least 270° to a second position.
7. The cleaning system of claim 6 , wherein the fixed barrier is outside the rotational sweep of the rotatable barrier.
8. The cleaning system of claim 7 , wherein the housing includes a first housing inlet to the first chamber outside the rotational sweep and a second housing inlet to the second chamber outside the rotational sweep, and the fixed barrier is between the housing inlets.
9. The cleaning system of claim 1 , wherein the rotatable barrier includes a first barrier inlet facing the first chamber and fluidly connected to the first nozzle, and a second barrier inlet facing the second chamber and fluidly connected to the second nozzle.
10. The cleaning system of claim 9 , wherein the actuator includes a central shaft defining an axis about which the rotatable barrier is rotatable, a first channel extending from the first barrier inlet through the rotatable barrier and central shaft and fluidly connected to the first nozzle, and a second channel extending from the second barrier inlet through the rotatable barrier and central shaft and fluidly connected to the second nozzle.
11. The cleaning system of claim 1 , wherein a liquid pump is fluidly connected to the first chamber.
12. The cleaning system of claim 1 , wherein a gas compressor is fluidly connected to the second chamber.
13. The cleaning system of claim 1 , further comprising a cylindrical sensor window, wherein the arm is rotatable about an axis defined by the sensor window.
14. The cleaning system of claim 13 , wherein the arm includes a wiper blade oriented axially relative to the sensor window.