Solution pump system

Abstract

A plunger driven solution pump is described that is configured to have a diaphragm that substantially conforms to the volume of a pump solution chamber when in a fully outwardly deflected state. The solution chamber may have an inlet port and an outlet port form in a concave solution chamber wall. A step, or ridge, may be formed along an outer periphery of the solution chamber wall and adjacent the inlet and outlet ports to prevent the diaphragm from becoming deformed from pressure against the solution chamber wall. This configuration may allow the pump to efficiently self-prime.

Description

technical field [0001] Embodiments relate to diaphragm-based solution pumps for moving liquids. More specifically, embodiments relate to solution pumps configured to self-prime for refrigeration systems. Background technique [0002] Many different types of systems rely on solution pumps to move liquid from one part of the device to another. For example, liquid / vapor absorption systems typically use an absorber heat exchange cycle or a generator / absorber heat exchange (GAX) cycle for cooling and heating indoor coils and other heat exchange exposed to the space or load to be conditioned element. In these types of installations, a solution pump is typically used to pump the ammonia-rich absorption fluid from the absorber assembly to the generator assembly. This process maintains a pressure differential between the low pressure on the absorber side and the high pressure on the generator side of the absorption system plant. An example of an ammonia water absorption heat pump...

AI Technical Summary

Problems solved by technology

Therefore, hydraulic diaphragm pumps of the type currently in use will not function adequately if there is no fluid in the solution chamber at start-up

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