Water spraying system
A water spraying system includes an engine, a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure, a sprayer fluidly coupled to the pump outlet, the sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve, a flow sensor configured to sense a flow of water into the pump, and a controller coupled to the flow sensor. The controller is configured to turn off the engine following a set time period of sensed flow below a threshold flow.
1. A water spraying system comprising:
an engine;
a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure;
a sprayer fluidly coupled to the pump outlet, the sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve;
a flow sensor configured to sense a flow of water into the pump;
a controller coupled to the flow sensor, wherein the controller is configured to activate the pump by starting the engine when the sensed flow is above a threshold flow, and wherein the controller is configured to turn off the engine following a set time period of sensed flow below the threshold flow; and
a user interface coupled to the controller, the user interface configured to receive input for adjustment of the threshold flow.
2. The water spraying system of claim 1 , wherein the flow sensor is located proximate the pump inlet.
3. The water spraying system of claim 1 , wherein the controller is further configured to idle the engine when the sensed flow is below the threshold flow.
4. The water spraying system of claim 1 , further comprising:
a pressure sensor located between the water source and the pump, the pressure sensor configured to sense a pressure of water provided to the pump.
5. The water spraying system of claim 1 , wherein the threshold flow is greater than zero.
6. The water spraying system of claim 1 , further comprising:
a manually-operated on/off switch configured to prevent activation of the pump when in an off position.
7. A water spraying system comprising:
an engine;
a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure;
a sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve;
a hose fluidly coupling the pump outlet to the sprayer;
a sensor configured to sense a water flow state, the sensor located proximate the pump inlet; and
a controller coupled to the sensor, wherein the controller is configured to activate the pump by starting the engine when the sensed water flow state indicates a positive flow condition, and wherein the controller is configured to turn off the engine when the sensed water flow state indicates a no-flow condition for a set time period.
8. The water spraying system of claim 7 , wherein the sensor is configured to sense a water flow rate.
9. The water spraying system of claim 7 , wherein the sensor is configured to sense a water pressure.
10. The water spraying system of claim 7 , wherein the sensor is configured to sense a water flow rate and a water pressure.
11. The water spraying system of claim 7 , wherein the sensor is configured to sense the water flow state into the pump.
12. The water spraying system of claim 11 , wherein the sensor is configured to sense a water flow rate.
13. The water spraying system of claim 11 , wherein the sensor is configured to sense a water pressure.
14. The water spraying system of claim 11 , wherein the sensor is configured to sense a water flow rate and a water pressure.
15. A pressure washer comprising:
an engine;
a pump driven by the engine, the pump including a pump inlet configured to be fluidly coupled to a water source and a pump outlet providing water at an increased water pressure;
a sprayer including a flow restriction valve and a trigger for manipulating the flow restriction valve so that movement of the trigger selectively opens and closes the flow restriction valve;
a hose fluidly coupling the pump outlet to the sprayer;
a flow sensor configured to sense a flow of water provided to the pump; and
a controller coupled to the flow sensor, wherein the controller is configured to activate the pump by starting the engine when the sensed flow indicates a positive flow condition, and wherein the controller is configured to turn off the engine following a set time period of sensed flow at a no-flow condition.
16. The pressure washer of claim 15 , wherein the flow sensor is located proximate the pump inlet.
17. The pressure washer of claim 15 , further comprising:
a pressure sensor located between the water source and the pump, the pressure sensor configured to sense a pressure of water provided to the pump.