Patent ID: 9709050
Date: 2017-07-18
CPC Classifications: F04B

Claim:
1. A diaphragm pump comprising: a solution chamber configured to contain a varying volume of an absorption fluid, the solution chamber comprising a concave solution chamber wall having a fluid inlet port and a fluid outlet port and having a single step circumscribing an outer edge of the solution chamber wall; a hydraulic fluid chamber configured to contain a varying volume of a hydraulic fluid, the hydraulic fluid chamber comprising a contoured fluid chamber wall; and a flexible diaphragm coupled around a perimeter at an interface between the solution chamber and hydraulic fluid chamber, wherein the varying volume of hydraulic fluid deflects the flexible diaphragm between an outwardly deflected position thereby forcing at least some of the absorption fluid through the fluid outlet port and an inwardly deflected position thereby drawing at least some of the absorption fluid through the fluid inlet port, wherein the flexible diaphragm, in the outwardly deflected position, conforms to the contoured solution chamber wall, and wherein the step prevents deformation of the diaphragm by the fluid inlet or fluid outlet ports.