Drip irrigation emitter
AssigneeNetafim, Ltd.
InventorRon Keren
Life of this patent
Estimating the term…
Abstract
A drip irrigation emitter receives liquid flowing in an irrigation pipe at an inlet pressure and emits the liquid out of the emitter at an outlet pressure lower than the inlet pressure. The emitter has a flow path through which the liquid flows in the emitter, wherein below a threshold pressure of liquid in the pipe the emitter is adapted to emit a regulated flow of liquid out of the emitter, and above the threshold pressure of liquid in the pipe the emitter is adapted to emit a non-regulated flow of liquid out of the emitter.
Claims28
A drip irrigation emitter comprising:
- an inlet through which liquid enters the emitter from an irrigation pipe,
- an outlet communicating with the outside environment,
- a flow path extending between the inlet and outlet, said flow path comprising pressure reducing flow parts, a venting zone and a regulating zone, the regulating zone for regulating the flow of liquid exiting the emitter via the outlet,
- the emitter further comprising a duct that is adapted to provide fluid communication between the venting zone and the outside environment, wherein the duct allows fluid to bypass the regulating zone and the outlet at pressures above a threshold pressure of liquid in the pipe.
A drip irrigation emitter for receiving liquid flowing in an irrigation pipe at an inlet pressure and emitting the liquid out of the emitter at an outlet pressure lower than the inlet pressure,
- the emitter comprising a flow path through which the liquid flows in the emitter, wherein
- below a threshold pressure of liquid in the pipe the emitter is adapted to emit a regulated flow of liquid out of the emitter through an outlet, and wherein above the threshold pressure of liquid in the pipe the emitter is adapted to at least partially emit a substantially non-regulated flow of liquid out of the emitter through a duct, wherein the duct allows fluid to bypass the outlet.
A drip irrigation emitter comprising:
- an inlet through which liquid enters the emitter from an irrigation pipe,
- an outlet communicating with the outside environment,
- a flow path extending between the inlet and outlet, said flow path comprising pressure reducing flow parts, a venting zone and a regulating zone, the regulating zone for regulating the flow of liquid exiting the emitter via the outlet, wherein
- the emitter is adapted to provide fluid communication between the venting zone and the outside environment through a duct that bypasses the outlet at pressures above a threshold pressure of liquid in the pipe, and wherein the fluid communication is in the form of pulses.
A drip irrigation emitter comprising:
- a cover, a body having an upper side and a lower side, and a flexible diaphragm located between the lower side of the body and the cover;
- an inlet extending through the cover, the inlet configured to allow fluid to enter the emitter below the diaphragm;
- an outlet extending through the body, the outlet being located above a first portion of the diaphragm, and the diaphragm being displaceable toward the outlet in response to sufficient liquid pressure applied at the inlet;
- wherein:
- the body is provided with a valve distinct from the outlet, the valve including a duct extending between the lower and upper sides of the body, and a seal;
- and
- the seal is configured to permit fluid to pass through the duct and exit the emitter, in response to liquid pressure applied at the inlet exceeding a predetermined threshold.
Dependencies are inferred from the claim text.