US 2020/0206409 A1 · Dual-Action Irrigation Pump with Variable Speed to Provide Constant Fluid Flow

Abstract

A dual-action pump includes a cylinder, a piston and a controller. The cylinder includes first and second inlet-outlet ports, each of the first and second inlet-outlet ports is configured to alternately intake a fluid to the cylinder and output the fluid from the cylinder. The piston is configured to be moved within the cylinder in a periodic cycle that alternately reverses a direction of movement of the piston, so as to pump the fluid through the first and second inlet-outlet ports. The controller is configured to control the movement of the piston within the cylinder, including setting to the piston: (a) a first speed, during a first predefined interval that precedes reversing the direction of movement, (b) a second speed, larger than the first speed, during a second predefined interval that follows reversing the direction, and (c) a baseline speed, smaller than the first speed, outside the first and second intervals.

Claims10

Dependent claims

A dual-action pump, comprising:

a cylinder comprising first and second inlet-outlet ports, wherein each of the first and second inlet-outlet ports is configured to alternately intake a fluid to the cylinder and output the fluid from the cylinder;
a piston, which is configured to be moved within the cylinder in a periodic cycle that alternately reverses a direction of movement of the piston, so as to pump the fluid through the first and second inlet-outlet ports;
and
a controller, which is configured to control the movement of the piston within the cylinder so that the piston moves at one or more of :
(a) a first speed, during a first predefined interval that precedes reversing the direction of movement, (b) a second speed, larger than the first speed, during a second predefined interval that follows reversing the direction, or (c) a baseline speed, smaller than the first speed, outside the first and second intervals.

2 more elements

A method for pumping a fluid in a dual-action pump comprising a cylinder having first and second inlet-outlet ports for alternately in-taking a fluid to the cylinder and outputting the fluid from the cylinder by each of the first and second inlet-outlet ports, the method comprising:

moving a piston within the cylinder in a periodic cycle that alternately reverses a direction of movement of the piston so as to pump the fluid through the first and second inlet-outlet ports;
and
controlling the movement of the piston within the cylinder to one or more of:
(a) a first speed, during a first predefined interval that precedes reversing the direction of movement, (b) a second speed, larger than the first speed, during a second predefined interval that follows reversing the direction, or (c) a baseline speed, smaller than the first speed, outside the first and second intervals.

1 more element

Dependencies are inferred from the claim text.

Dual-Action Irrigation Pump with Variable Speed to Provide Constant Fluid Flow

Life of this patent

Dual-Action Irrigation Pump with Variable Speed to Provide Constant Fluid Flow

Life of this patent

Abstract

Claims10