| 摘要 |
<p>This invention relates to a device and method for converting low continuous flow to a high intermittent and pulsating flow and is especially adapted for operating sprinklers, showerheads etc. at low flow. Fluid is introduced at a controlled low flow, such as by the use of a dripper (5, 24) in a supply line (7), into a container (1, 22) having expandable chamber (2). The outflow of liquid from the chamber (2) is restricted until pressure created by the introduction of the liquid is sufficient to force the valve to open, and in response to a resistance to the flow, the fluid intermittently ejects at a higher flow. This is achieved by utilizing a preset pressure responsive valve (8, 28), designed for quick response, to create a water hammer effect. The invention describes pulsating valves and other devices operating in response to deformation created in elastic membranes in response to pressure changes.</p> |
