| 摘要 |
<p>A pressure washer (110) includes a prime mover (114), a water pump (116), the water pump (116) including a pump inlet (128) for receiving fluid from a fluid source and a pump outlet (130) for supplying a pressurized primary fluid, a jet pump (200) including a primary fluid inlet (205) fluidly coupled to the pump outlet (130), a secondary fluid inlet (230), and a fluid outlet (225), and a spray gun (118) configured to be fluidly coupled to the fluid outlet (225) of the jet pump (200), the spray gun (118) including a spray gun outlet (265) having a variable effective flow area. Wherein, in operation, in a high pressure operating mode, the pressurized primary fluid flows through the jet pump (200) and exits through the fluid outlet (225) of the jet pump (205), and in a high flow operating mode, the pressurized primary fluid flows through the jet pump (200) and entrains a secondary fluid supplied through the secondary fluid inlet(230), resulting in a combined fluid flow.</p> |
